Welcome to the HMU & ATHENA European University Sci-Cafe!

We are thrilled to launch the HMU & ATHENA European University Sci-Cafe in November 2020. We will kick-off on the 7th of October and continue every Friday at 1000 CET. Its objective is to (a) introduce the research actions & interests of the personnel of the Hellenic Meditteranean University (HMU) & ATHENA European University within its ecosystem; (b) disseminate HMU & ATHENA research & laboratories within and beyond their ecosystem; (c) build the research collaboration framework within HMU, within ATHENA and with distinguished scientists on abroad; (d) introduce to our students the progress in technologies within the education & research programs of HMU & ATHENA and beyond!

Please support us and register your talk following this link: https://forms.gle/nUCDVpjWdNzLsKjBA

All the presentations will be in English and will happen remotely, using the zoom 

We request from our speakers to use the following template for their presentations – click here

The action is coordinated by the HMU International Office Academy and the ATHENA European University Network

Welcome and we hope you will support us!!

23rd of Sept., Dr. Tomaz Aljaz (FINI Novo Mesto University, Slovenia) – Managing projects with Theory of Constraint Principles

Abstract:

In IT, according to the survey made by The Standish Group and published in the 2015 CHAOS report, only very few projects perform well to the project management triple constraints of cost, time, and scope. Only 29% of software projects were completed on-time and on-budget, while 19% of projects were canceled before they ever got completed and 52% of projects increased their cost, scope, or have scope creep. Clearly, the failure rate of IT projects is high and as a response to that organizations tend to implement modern project management practices and attitudes, with limited or inconsistent success in terms of better project or business performance. The lecture shows examples of project portfolio using different management approaches, starting with traditional approaches and continuing with step-by-step approaches using modern project management methodologies, providing significant benefit to the organization. Achieving such improvements requires changes in how project work is managed, planned, scheduled, and queued. Particularly, it is shown how Theory of Constraints tools and applications enables at least doubling the number of projects that organization can complete in the same period, and able to deliver over 90 percent of them within defined scope, budget, and time – all within existing employees and without changes in technology and no changes to how they are performing IT-related tasks like design, implementation, and testing.

Short Bio of Speaker: Dr. Tomaz Aljaz

Register: https://forms.gle/5WUQrgxazUasURLA8 by the 22nd of September

Zoom Link: https://us02web.zoom.us/j/82960270936?pwd=cFE1NGxiMmFjZFpCTjlxWlpYWkJ6QT09

Recorded Lecture: https://youtu.be/L7FUHTu9FjQ

Lecture Notes: Please download them from here


2nd of October, Dr. Konstantinos Petridis  (Hellenic Mediterranean University, Greece) – Presentation of the ATHENA European University & the Erasmus Actions of the HMU the last six months

Abstract:

In this presentation, the ATHENA European University will be presented along with the tasks that have been assigned to  HMU. On top of this, a review of the actions of the IRO in the last six months will be reviewed. In the end, the  targets of the office the following three months will be presented

Short Bio of Speaker: Dr. Konstantinos Petridis (Associate Professor, Department of Electronics Engineering, Director of the International Relations Office, HMU)

Register: https://forms.gle/dGT7qWPWqRkhBPqa9

Zoom Link: 30th of October 2020

To follow the presentation again: https://www.youtube.com/watch?v=uhiT4Cng3kg


9th of October., Dr. Melina Kotti (Hellenic Mediterannean University, Greece) – Environmental quality-Environmental protection: A global approach

Abstract:

The presentation is referred to as the basic terms that a scientist who deals with the protection of the environment has to be familiar with. It is referred also to as the methods for monitoring the water and wastewater quality and to the water and wastewater treatment. These methods are the ones that the presenter is expert in.

Short Bio of Speaker: Dr. Melina Kotti (Assistant Professor, Department of Electronic Engineering, HMU) / Google Scholar 

Register: https://forms.gle/cGTCFDLHVBNnDrD4A

Zoom Link: https://us02web.zoom.us/j/81201991552?pwd=Wkt1UkM5S2ZPcTVRd1J1RE0xOEJ1QT09

Recorded Lecture: https://youtu.be/eYmrZ7lEE9M


15th of October., Webinar in 5G Communications & Applications, (IRO-HMU, ATHENA European University, The CRETE Project)

Starting & Closing Time:  1000 / 1300 CET

Abstract: Please check here

Short Bio of Speaker: Please check here

Register: https://forms.gle/vWtNdpiGkEzy4jrC7

Zoom Link: TBA on the 12th of October

YouTube Channel Link: https://youtu.be/MUTT_OwQw0o


16th of October., Dr. Pantelis Soupios (King Fahd University of Petroleum & Minerals, Saudia Arabia) – Geophysical survey at Wabar MeteoCrater: Recent findings

Abstract:

Geophysical survey at Wabar MeteoCrater: Recent findings (20min + 5min QA)

The study of impact craters on Earth has picked up high worldwide consideration, which can be done by studying the ground surface using remote sensing (satellite), geological outcrops, drilling holes and apply small-scale laboratory experiments trying to build the dynamic models of crater formation and by collecting geophysical data.
In this work, the near- crater sediments at the young Wabar crater field in Saudi Arabia has been investigated using the magnetic, EM, seismic, and GPR methods. The main targets of this research were exploring the possibility of any remnant major pieces of the meteorite, investigate the meteoroid direction, and map the deformation structure associate with the meteorite impact. During the expeditions, many small pieces of the meteoroid were found and collected for further geochemical analysis.

Hanafy S., Soupios P., Stampolidis A., Koch C.B., Al-Ramadan K., Al-Shuhail A., Solling Th. and
Argadestya I., 2020, Comprehensive Geophysical study at Wabar crater, Rub Al-Khali desert, Saudi Arabia, in review to Earth and Space Science, AGU

A glance at CPG (20min + 5min QA)
King Fahd University of Petroleum & Minerals already has a very strong academic reputation in Saudi Arabia and across the Arab world. That sets a high standard for the College, and we embrace that challenge. Our goal is to be one of the top petroleum research and teaching colleges in the world.

Short Bio of Speaker: Dr. Pantelis Soupios (Professor, KFU) / Google Scholar 

Register: https://forms.gle/G9LndnCSnMGjxDA97

Zoom Link: Only the registered individuals will receive the invitation in Zoom

YouTube Channel Link:  https://youtu.be/kvgvKPY6JCE (starts from the 52 minutes and terminates at 1:45 hrs)


16th of October., Webinar in Mathematics Education (IRO-HMU, ATHENA European University & the iTEM Project)

Opening/Closing Time: 1500 – 1800  CET

Abstract: Please check here 

Short Bio of the Speakers: Please check here

Register: https://forms.gle/psoX5MhwifArWHgo9

Zoom Link: TBA at 14th of October 2020

YouTube Video Link: https://youtu.be/kvgvKPY6JCE (starts at 0500 hrs to the end)


23rd of October, Dr. Maria Zakinthinaki (Hellenic Mediterranean University, Greece) – Artificial Intelligence/An Overview

Abstract:

This talk will go through an introduction to the area of artificial intelligence, from the early signs of its appearance (B. C.) to its latest developments. Definitions, concepts, and philosophical concerns regarding the importance and the goals of AI will be discussed. After a brief historical overview, AI examples will be shown, together with some of AI’s earlier and recent applications to everyday life. The aim of the talk is to give a general idea of AI’s concept, inform about the different disciplines and research areas involved in AI’s development and provide food for thought concerning the challenges and risks of AI.

Short Bio of Speaker: Dr. Maria Zakinthinaki (Assistant Professor, Department of Electronics Engineering) /Google Scholar

Register: https://forms.gle/yGG8B3LSFGaXaHsB7

Zoom Link: https://us02web.zoom.us/j/85803667598?pwd=WmxyZGlCUlRHMnJkdFRoN3pnK0Fwdz09

YouTube Channel Link: https://youtu.be/u4kkwRBaLCg


30th of October, Dr. Konstantinos Daskalakis (Aalto University, Finland) – ‘Polaritonics for improving the performance in light-emitting devices: Principles & Applications’

Abstract:

In our everyday life, we experience the interaction of light with the materials around us. For example, the colors we see in a flower is a result of light interacting with the flower’s surfaces and molecules. Some of the very well-known light-matter interactions are light absorption, emission, reflection, and scattering. In some special cases, light interacts with matter so strongly that they merge into one and indistinguishable hybrid form.
Microcavity polaritons are one of these special cases of bosonic particles that come into life under strong light-matter interactions. In the lab conditions, we create polaritons artificially in optical microcavities (2 mirrors facing each other separated by only a few hundreds of nanometres) sandwiching a thin film of a semiconductor. Because polaritons decay generates photons, we can use spectroscopy to study them.
To date, most of the polaritonic samples are used for fundamental studies in physics, because polaritons hybrid light-matter nature makes them exceptionally light (8 orders of magnitude lighter than the rubidium atoms) bust still have matter properties. Besides, polaritons can propagate through defects without scattering (under special conditions), can show ultrafast nonlinear response to light inputs (all-optical transistors), and the quantomechanical states of polaritons can simultaneously emit and absorb light. In this talk, I will discuss how the special properties of polaritons can improve devices such as lasers light-emitting diodes (LEDs), waveguides, and all-optical switches.

Short Bio of Speaker: Dr. Konstantinos Daskalakis (ex Marie – Curie Holder, ERC Holder, Researcher, Department of Applied Physics) /Google Scholar

Register:  https://forms.gle/s4qqSUcdhj3jwp7Z9

Zoom Link: New date for Dr. Daskalakis’ Talk will be on the 27th of November 2020

The recorded file in IRO-HMU YouTube Channel: https://youtu.be/Pj_quxO_ttA


6th of November, Dr. Eugene Katz  (Ben Gurion University, Israel) – Fullerene Like Structures

1Department of Solar Energy and Environmental Physics, J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer, 84990  Israel

 2Ilse-Katz Institute for Nanoscale Science and  Technology, Ben-Gurion

The University of the Negev, Be’er-Sheva 84105, Israel

Abstract:

The discovery of C60, the third variety of carbon, in addition to the more familiar diamond and graphite forms, has generated enormous interest in many areas of science. Furthermore, it turns out that C60 is only the first of an entire class of closed-cage polyhedral molecules consisting of only carbon atoms – the fullerenes (C20, C24, C26, … C60, …C70, … C1000000-carbon nanotubes). This talk presents the main mathematical principles for engineering fullerene-like structures (based on symmetry considerations and Euler relation between the numbers of faces, vertices, and edges in polyhedra). I will discuss how Nature, using fullerene-like structures, minimizes energy, and matter resources in molecules and nanoclusters, viruses, and living organisms. Examples of achievement of such goals in architecture are also presented. Discussion of scientific terms and concepts will be held in the context of the history of their discoveries. The history of discoveries of fullerenes and carbon nanomaterials made at the end of the XX century will be punctuated by excursions into the depths of time – until the Renaissance and even Antiquity.

Short Bio of Speaker: Dr. Eugene Katz (Professor, Ben Gurion University of Negev) /Google Scholar

Register: https://forms.gle/eDH9QjFbGHiyZ2eu6

Zoom Link: TBA on 3rd of November 2020

YouTube Recorded Presentation: https://www.youtube.com/watch?v=4f3hEPtV5iU


13th of November, Dr. Michalis Tatarakis  (HMU, Greece) – Demonstration of current-induced Electro-Thermo-Mechanical instability                                                 anisotropic growth in metallic wire targets

Abstract:

Results on the first demonstration of an Electro-Thermo-Mechanical (ETM) instability growth induced anisotropy in high current heated metallic wire targets will be presented. The anisotropy is the result of the associated difference between the longitudinal and azimuthal growth rates of the ETM instability. The nonlinear magnetic diffusion and shock wave propagation in the conductor is considered in the study. The demonstration of the anisotropy is an observation of fundamental importance since it sheds light on the unexplained elliptical instability structures observed in magnetized liner experiments.

Short Bio of Speaker: Dr. Michalis Tatarakis (Professor, Department of Electronics, Director of  the IPPL ) /Google Scholar

Register: https://forms.gle/TQzzfgzo4zMZZX8X6

Zoom Link: TBA on 10th of November 2020

The Seminar Talk on YouTube Channel: https://youtu.be/Dv8vQVlSByM


20th of November, Dr. Aristides Kiprakis  (University of Edinburgh, UK)

Associate Professor in Power Systems, School of Engineering, University of Edinburgh

Fundamentals, challenges, and current state of the art in marine energy conversion and integration

Abstract: 

Electricity generation is one of the major contributors to Greenhouse Gas (GHG) emissions. Meeting the Paris Agreement targets for the reduction of GHG, in order to reduce the effects of anthropogenic climate change, will require the diversification of the energy resources we use so that we can minimize our dependence on fossil fuels. There is an abundance of resources available in the marine environment, including offshore wind, wave, and tidal energy. Early research initiated during the oil crisis in the ‘70s has been revisited during the past decade, with new technology development and rapid expansion of offshore wind installed capacities worldwide, but also with a renewed interest in wave and tidal energy conversion systems. This has resulted in a substantial body of research in the resource, conversion, and integration of marine energy, as well as many converter designs, currently at various stages of development, ranging from conceptual design to commercial units. The University of Edinburgh is considered the birthplace of marine energy since the ‘70s and is still one of the world’s leading research institutions in this field. In this presentation we will go through the fundamentals of marine energy conversion, we will discuss the major challenges for its development, and we will present the current state of the art as well as ongoing research at the Institute for Energy Systems of the University of Edinburgh.

Short Bio of Speaker: Dr. Aristides Kiprakis (Senior Lecturer in Power Systems) /Google Scholar

Register: https://forms.gle/nL6b2oUczUqUwAZx8

Zoom Link: TBA on 14th of November 2020

The Presentation on YouTube: https://youtu.be/d1dFo6r3tVY


4th of December, Dr. Nektarios Papadogiannis (Hellenic Mediterranean University, Greece) – Novel X-ray sources with high coherence: new horizons in biomedical imaging

Abstract:

The index of refraction of materials in the x-ray regime is given by the equation n=1-δ+iβ, where δ is a parameter related to the ionization that slightly reduces below one the real part of the index of refraction, while parameter β counts for the absorption. Even if inherently the x-ray diffraction limit is less than 1 nm, such a spatial resolution is not even approached due to the incoherent properties of most of the available x-ray sources. The imaging using the x-ray absorption in matter, i.e. the parameter β, limiting the imaging resolution at least five orders of magnitude higher than the Abbe diffraction limit. Consequently, the need for coherent x-ray sources is of increased demand. X-ray FEL facilities currently provide such coherent sources of directional and high brilliance x-ray radiation. However, they require high budget investments for construction, maintenance and man-power operation and for this reason are a few worldwide. During the last two decades the rapid evolution of ultrafast and high-power laser technology enabled a) the generation of coherent soft X-rays with a non-linear process named High Harmonic Generation (HHG) of the fundamental laser pulse and b) the acceleration of electrons inside gas targets in table-top experiments using the Laser Wakefield Acceleration (LWFA) resulting in the generation of a directional and semi-coherent x-ray betatron-type radiation. This hard X-ray radiation fulfils the requirements for a semi- coherent x-ray source appropriate for imaging applications in the micro-scale. Laser installations that support the generation of x-ray betatron-type radiation are much less costly compared to XFELs and thus offered for development by many laboratories worldwide.

Short Bio of Speaker: Dr. Nektarios Papadogiannis (Professor, Vice-Rector, Institute of Plasma Physics and Laser & Department of Music Technology and Acoustics) /Google Scholar

Register: https://forms.gle/SH4TnqmMiJQGtfuC8

Zoom Link: https://youtu.be/rstNe3irkLA


11th of December, Dr. Filippos Valianatos

• Department of Geophysics – Geothermics, Faculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, Greece, (fvallian@geol.uoa.gr).
• Institute of Solid Earth Physics and Geohazards, UNESCO Chair on Solid Earth Physics & Geohazards Risk Reduction, Hellenic Mediterranean University Research Center, Crete, Greece

A non-extensive statistical physics view in Earth Physics: Geodynamic properties in terms of Complexity theory

Abstract:

Boltzmann-Gibbs (BG) statistical physics is one of the cornerstones of contemporary physics. It establishes a remarkably useful bridge between the mechanical microscopic laws and macroscopic description using classical thermodynamics. If long-range interactions, non-markovian microscopic memory, multifractal boundary conditions, and multifractal structures are present then another type of statistical mechanics, then BG, seems appropriate to describe nature (Tsallis, 2001).
To overcome at least some of these anomalies that seem to violate BG statistical mechanics, non-extensive statistical physics (NESP) was proposed by Tsallis (Tsallis, 1988) that recovers the extensive BG as a particular case. The associated generalized entropic form controlled by the entropic index q which represents a measure of non-additivity of a system. Sq recovers SBG in the limit q→1. For a variable X with a probability distribution p(X), like that of seismic moment, inter-event times or distances between the successive earthquakes or the length of faults in a given region, using terms of NESP, we obtain the physical probability which expressed by a q-exponential function as defined in Tsallis, (2009). Another type of distributions that are deeply connected to statistical physics is that of the squared variable X2. In BG statistical physics, the distribution of X2 corresponds to the well-known Gaussian distribution. If we optimize Sq for X22, we obtain a generalization of the normal Gaussian that is known as q-Gaussian distribution (Tsallis, 2009). In the limit q→1, the normal Gaussian distribution recovered. For q>1, the q-Gaussian distribution has power-law tails with a slope -2/(q-1), thus enhancing the probability of the extreme values.
In this presentation, we review a collection of Earth physics problems such as:
a) NESP pathways in earthquake size distribution,
b) The effect of mega-earthquakes,
c) Spatiotemporal description of Seismicity,
d) the plate tectonics as a case of non-extensive thermodynamics
e) laboratory seismology and fracture,
f) the non-extensive nature of earth’s ambient noise, and
g) evidence of non-extensivity in earthquakes’ coda wave.
The aforementioned cases cover most of the problems in Earth Physics indicated that non-extensive statistical physics could be the underline interpretation tool to understand earth’s evolution and dynamics.
We can state that the study of the non-extensive statistical physics of earth dynamics remains wide-open with many significant discoveries to be made. The results of the analysis in the cases described previously indicate that the ideas of NESP can be used to express the non-linear dynamics that control the evolution of the earth dynamics at different scales. The key scientific challenge is to understand in a unified way, using NESP principles, the physical mechanisms that drive the evolution of fractures ensembles on the laboratory and global scale and how we can use measures of evolution that will forecast the extreme fracture event rigorously and with consistency.

At the end of the present talk we will present the approved PhD network in Solid Earth dynamics with Athens (coordinator), Bucharest, Rome, Brussels and Stockholm as partners in the frame of the CIVIS European University

Short Bio of Speaker: Dr. Filippos Valianatos /Google Scholar

Register: https://forms.gle/xCsAdwPc92jz6Vog6

Zoom Link: https://www.youtube.com/watch?v=TKBgfCHl_RE


18th of December, Dr. Denia Kolokotsa (Technical University of Crete, Greece) – Challenges and Perspectives of Energy in the Built Environment: From Smart Buildings to Smart Cities

Abstract:

In an increasingly urbanized world, governments and international corporations strive to increase the productivity of cities, recognized as economic growth hubs, as well as ensuring a better quality of life and living conditions for citizens. Although a significant effort is performed by international organizations, researchers, and others to transform the challenges of cities into opportunities, the visions of our urban future are trending towards bleak. Social services and health facilities are significantly affected in negative ways owed to the increase in urban populations (70 percent by 2050) as verified by the recent Covid-19 pandemic The talk starts with the emerging challenges for urban regions and cities and focusing on the importance of data collection and smart energy management for buildings, districts, and communities. Zero energy communities and the energy technologies to achieve zero energy targets are analyzed. The role of smart grids as a key mechanism for smart communities is discussed. Finally, the integration of nature-based solutions in smart cities and the benefits for the urban context and citizens’ health and wellbeing is presented.

Short Bio of Speaker: Dr. Denia Kolokotsa (Associate Professor, School of Environmental Engineering,  /Google Scholar

Register: https://forms.gle/PBuzALYst5LEDB7r6

Zoom Link: https://youtu.be/EYA0cNeKyL4


 22nd of January 2021, Dr. Katerina Chatzaki (Professor, Dimokrious University of Thrace (DUTH), Greece)

Biomarker Discovery, Machine Learning, and Agro-Health: building bridges between experts

Abstract: Biomarkers are the cornerstone of precision medicine: identified as a measurable indicator of some biological state or condition, they promise to offer solutions for accurate diagnosis, prognosis, and therapeutic monitoring. Among other biological entities, DNA methylation patterns differing dramatically between tissues and changing dynamically over time, are suggested to carry clinically valuable information. We have been studying methylation in liquid biopsy material, ie cell-free DNA liberated in the circulation, in different pathological conditions such as cancer and diabetes. Recently, following the global scientific trend, we move gradually from hypothesis-driven to (big) data-driven approaches, as modern -omics technologies lead the accumulation of large precious multi-parametric biological datasets. We employ ad-hoc auto Machine Learning tools for data extrapolation, delivering low-feature validated models/classifiers. Translational development will lead to emerging cost-effective multiplex bench assays expected to retain high diagnostic performance in a real-world setting, readily available for commercialization. Our approach can have unprecedented added value in different medical conditions, such as the Covid-19 pandemic, and/or other biological problems

Short Bio of Speaker: Prof. Katerina Chatzaki (Professor, School of Medicine) /Google Scholar

Register: https://forms.gle/K6fn8snnEfLAUDFm7

Zoom Link: TBA on 15th of January 2021

To follow the recorded lecture: https://www.youtube.com/watch?fbclid=IwAR0WcTSBpX7bJ0NOxLw7MaMZnB0uvnCiyqnfYeuaecFhn872HuyJo7d_cdo&v=oi6QWpd2CcQ&feature=youtu.be


 29th of January 2021, Dr. George Kavoulakis (Professor, Hellenic Mediterranean University, Greece)

Α brief introduction into the physics of ultra-cold atomic systems

Abstract:

In the last 25-30 years, the field of cold atomic gases has shown remarkable achievements, ranging in a very wide range of sub-fields of physics. These include condensed-matter physics, atomic physics, quantum optics, nonlinear physics, nuclear physics, etc. These systems are gaseous and are very dilute, which is a great advantage, as compared with other systems, e.g., liquid Helium, superconductors, nuclei, etc. In addition, we can manipulate them, as they are easily tunable. Given the numerous activities on cold atoms, in this talk, I will give a very brief introduction and I will focus mostly on some basic principles. I will then discuss some of their remarkable properties, focusing mostly on their superfluid properties.

Short Bio of Speaker: Prof. George Kavoulakis (Professor, Department of Electronic Engineering) /Scopus 

Register: https://forms.gle/dYiiKrb3UhzNrMGq8

Zoom Link: TBA after your registration

The Lecture in YouTube:  https://youtu.be/b_rJ7O7Mu6o


5th of February 2021, Dr. Thomas Anthopoulos (King Abdullah University of Science & Technology, Saudia Arabia) – Printed Nanoelectronics: there is a plenty room down there

Abstract: In silicon microelectronics, the ability to downscale critical dimensions of its building block, the field-effect transistor, has proven extremely successful over the past sixty years in increasing the computational power of modern microprocessors. These extraordinary developments have been achieved through a virtuous circle of scientific and engineering breakthroughs which have led to the proliferation of information & communication technologies with an extraordinary impact on our daily life and society. However, adopting silicon’s approach of scaling to emerging technologies such as printed and large-area electronics, has proven challenging both in terms of technology and cost. In this talk, I will focus on the progress being made downscaling emerging forms of large-area electronics through new materials and fabrication paradigms and their application in the ever expanding ecosystem of The Internet of Everything

Short Bio of Speaker: Prof. Thomas Anthopoulos (Professor in Materials Science and Engineering) /Google Scholar

Thomas D. Anthopoulos is a Professor of Material Science and Engineering at King Abdullah University of Science and Technology (KAUST) in Saudi Arabia. He received his B.Eng. and D.Phil. degrees from Staffordshire University in the UK. He then spent two years at the University of St. Andrews (UK) where he worked on new materials for application in organic light-emitting diodes before joining Philips Research Laboratories in The Netherlands to focus on organic transistors and soft electronics. From 2006 to 2017 he held faculty positions at Imperial College London (UK), first as an EPSRC Advanced Fellow and later as a Reader and Professor of Experimental Physics. His research interests are diverse and cover the development and application of novel processing paradigms and the physics, chemistry & application of functional materials.

Register: https://forms.gle/MNmgxXj4PDqSzSde7

Zoom Link: TBA on 2nd of February 2021

YouTube Link to view the recorded lecture: https://youtu.be/NXwr7IJyfms


12th of February 2021, Dr. Achilleas Savva (University of Cambridge, UK) – An Introduction to Bioelectronics

Abstract: Organic bioelectronics defines a generic platform with unprecedented biological recording and is maturing toward applications ranging from life sciences to the clinic. Conjugated polymers that support mixed (electronic and ionic) conduction are key to advancing a host of technological developments for next-generation bioelectronics devices. When interfacing an electrolyte, the electrical properties of the conjugated polymer film are modulated dramatically due to ions penetrating into the bulk of the film. The latter is the main principle of operation of organic electrochemical transistors (OECTs), which operate in biological media and translate low magnitude ionic fluctuations into measurable electrical signals. This talk will go through the principles of electronic and ionic conduction in conducting polymers, such as PEDOT:PSS and other, p-type and n-type semiconducting polymers. Polymer structure-property relations and their link with OECT performance will be demonstrated. The talk will also go through novel biological applications of organic bioelectronics devices such as metabolite biosensors, cell membranes-on-a chip, and 3D bioelectronic devices for tissue engineering.

Short Bio of Speaker: Dr. Achilleas Savva (Postdoctoral Researcher, Marie – Curie Fellow) /Google Scholar

Register: https://forms.gle/pmNUFcuDGf5ZGb1LA

Zoom Link: TBA on 2nd of February 2021

YouTube Link to view the lecture again: https://www.youtube.com/watch?v=VADaaCvZx3A&feature=share&fbclid=IwAR34j8xLGIlGSi3pi4x1HJDJBZEaf_bm0D4jTDwrQlXE3kKy2nsJNsuf_Sc


19th of February 2021, Dr. George Kakavelakis (University of Cambridge, UK) – Carbon-Based Electrodes for Solution-Processed Solar Cells

Abstract:

Solution-processed metal halide perovskite solar cells (PSCs) are considered the most promising photovoltaic (PV) technology to replace Silicon due to their high certified power conversion efficiencies (PCEs), low manufacturing cost, and potential for high throughput device fabrication. Recently, the research efforts of the PSC’s scientific community have been focused on tackling the remaining drawbacks towards commercialization, which includes: 1) the use of expensive metallic
electrodes and hole transport layers (HTLs), that increase the overall device cost and hinder their high throughput fabrication and 2) the low device operational stability. Thus, the aforementioned bottlenecks should be tackled in order for the full potential of PSCs to be reached. The most promising approach to overcome these drawbacks of PSCs is with the adoption of a fully printable device fabrication route, which is enabled by the replacement of the thermally evaporated electrodes using low-cost printable carbon-based conductive films. Using this fully printable device configuration, efficient, very stable and ultra-low-cost PSCs can be prepared at very high throughput. In this talk, I will focus on the recent advancements, fundamental challenges, and prospects of this promising PV technology and finally, I will present my recent results in this research direction

Short Bio of Speaker: Dr. George Kakavelakis (Postdoctoral Researcher) /Google Scholar

Register: https://forms.gle/Q82yyfewXC9H7ctZ9

Zoom Link: TBA on 12th of February 2021

The talk in YouTube: https://youtu.be/p7n3XuWM3t8


26th of February 2021, Dr. Ioannis Paradeisanos (INSA-CNRS, France) – “Light-matter interactions in atomically thin semiconductors”

Abstract:

The Nobel Prize in Physics 2010 was awarded jointly to Andre Geim and Konstantin Novoselov “for groundbreaking experiments regarding the two-dimensional material graphene”. Thenceforth two-dimensional (2D) materials have attracted tremendous research interest due to their unique optical, electronic, and mechanical properties. The way these materials interact with light depends strongly on the number of atomic layers. More than 5000 compounds are predicted to appear layered and they can be easily assembled to form heterostructures and combine the unique properties of the constituent layers. Potential applications in future photonics, optoelectronics and quantum technology are based on our understanding of the light-matter interaction on an atomic monolayer scale. I will discuss what we can learn from optical spectroscopy of these atomically thin semiconductors and their heterostructures for future applications but also for fundamental physics. A description of the physical origin of the main absorption and emission features in the optical spectra will be introduced.

Short Bio of Speaker: Dr. Ioannis Paradeisanos (Postdoctoral Researcher) /Google Scholar

Register: https://forms.gle/B7jTf5CEqEMvYYnD8

Zoom Link: TBA on 19th of February 2021

The Lecture on HMU-IRO YouTube Channel: https://youtu.be/_GeqL3ETbiI


5th of March 2021, Dr. Manolis Benis (Physics Department, University of Ioannina, Greece) – Atomic Physics with Accelerators: Projectile Electron Spectroscopy

Abstract:

The APAPES initiative (Atomic Physics with Accelerators: Projectile Electron Spectroscopy) established in Greece the discipline of Atomic Physics with Accelerators, a field with important contributions to fusion, hot plasmas, astrophysics, accelerator technology, and basic atomic physics of ion-atom collision dynamics, structure, and technology. This has been accomplished by combining the existing interdisciplinary atomic collisions expertise from Greek Universities, the strong support of distinguished foreign researchers, and the high technical ion-beam know-how of the “Demokritos” tandem Van der Graaff accelerator group into a cohesive initiative. The on-going ion-atom collisions research activities of the APAPES team in “Demokritos”, the related collaborative activities at GSI heavy nuclei accelerator, and future perspectives will be presented.

Short Bio of Speaker: Dr. Manolis Benis (Assistant Professor, Department of  Physics) /Google Scholar

Register: https://forms.gle/uvvdWj9iBoNhKxqNA

Zoom Link: https://us02web.zoom.us/j/4039520498?pwd=ZVRzUm16T2gwTENwMlh0NnZ3T2FBUT09

The recorded lecture: https://youtu.be/xdS3Ya7IMBg


12th of March 2021, Dr. Maria Farsari (Institute of Electronic Structure and Lasers, Heraklion, Greece) – Multiphoton Lithography: Principles, Materials, and Applications

Abstract:

Multiphoton Lithography is a technique that allows the fabrication of three-dimensional structures with sub-100 nm resolution. It is based on multi-photon absorption; when the beam of an ultra-fast laser is tightly focused on the volume of a transparent, photosensitive material, polymerization can be initiated by non-linear absorption within the focal volume. By moving the laser focus three-dimensionally through the material, 3D structures can be fabricated. The technique has been implemented with a variety of materials and several components and devices have been fabricated such as micro-optics, biomedical devices, and scaffolds for cell growth. The unique capability of Multiphoton Lithography lies in that it allows the fabrication of computer-designed, fully functional 3D devices. Here, I summarize the principles of microfabrication and present recent research in materials processing and functionalization of 3D structures. Finally, I discuss the future applications and prospects for the technology.

Short Bio of Speaker: Dr. Maria Farsari (Research Director at FORTH/IESL and the leader of the NLL group) /Google Scholar

Register: https://forms.gle/4uWqoymHtQMCxndEA

Zoom Link: https://us02web.zoom.us/j/4039520498?pwd=ZVRzUm16T2gwTENwMlh0NnZ3T2FBUT09

Watch it again: https://youtu.be/YNZbFweHkRw


12th of March 2021, Dr. Francesco Scotognella (Politecnico di Milano, Italy) – Nanoparticle Based Photonic Devices

Abstract:

In this talk, I will describe the fabrication and the optical characterization of multilayer photonic structures. The multilayer structures have been fabricated starting from colloidal dispersions of metal oxide nanoparticles and by employing the spin-coating technique. We have mostly used nanoparticles of silicon dioxide, titanium dioxide, and indium tin oxide. We have obtained in this way porous multilayer structures.
I will then show the exploitation of such multilayer structures in different device architectures. By placing the photonic structures between two electrodes, we could observe electric field-driven tuning. By adding a thin layer of silver on top of the photonic structures we could obtain colorimetric sensors for bacterial contaminants.

Short Bio of Speaker: Dr. Franscesco Scotognella (Associate Professor, Physics Department, POLIMI, Italy) /Google Scholar

Register:

Zoom Link: https://us02web.zoom.us/j/4039520498?pwd=ZVRzUm16T2gwTENwMlh0NnZ3T2FBUT09

Watch it again: https://youtu.be/7COY4iq5h80


19th of March 2021, Dr. Ioanna Zergioti (National Technical University of Athens, Greece) – Laser Direct Printing for Flexible Electronic Applications

Abstract:

Current technological trends require the precise deposition of highly resolved features, in a direct writing approach that preserve their structural and electronic properties upon transfer while increasing the number of components that can be integrated into a single device. Over the past decade, printed electronics technology has evolved and is now used in applications such as flexible screens, intelligent labels, and packaging. Among the printing techniques, Laser-induced forward transfer (LIFT) technique is capable of printing electrical circuits quite inexpensively and quickly. At the same time, this technique is environmentally friendly and has no restrictions in terms of viscosity. In this work, we highlight the newest trends of LIFT manufacturing for the development of a variety of components with electronic, optoelectronic, and sensing functionality such as RFID antennas, RF transmission lines, organic thin-film transistors, metallic interconnects, circuits defects repairing, and biochemical sensors.
At the same time, the increasingly demanding requirements have highlighted the need for more thorough, all-embracing research regarding the rheological characteristics of the printable fluids, their jetting dynamics, and their electrical, post-sintering properties, that will define the process’ reliability, aiming towards its industrialization.

Short Bio of Speaker: Dr. Ioanna Zergioti  (Professor, Physics Department) /Google Scholar

Register: https://forms.gle/s62qT6uepWGZBaDT7

Zoom Link: https://us02web.zoom.us/j/4039520498?pwd=ZVRzUm16T2gwTENwMlh0NnZ3T2FBUT09

Watch it again: https://www.youtube.com/watch?v=swhqCI2bhkA&list=PL3OWQw2onmC_fjutflKRDT0OVw_1z0XFW&index=23


26th of March 2021, Dr. George Spyropoulos (Assistant Professor, Ghent University, Belgium) – Organic electronics for Neural Interfaces

Abstract:

Our capacity to understand and modify neural activity will lead to tremendous advancements for humanity during the next decades. These advancements will pave the way for high-quality brain-machine interfaces, wearable electronics and therapeutic devices. However, current technology and materials impede this development with bulky, non-biocompatible electrical components that require rigid encapsulation in body, and interfaces that lack the appropriate mechanical and electrical properties to safely and efficiently contact tissue for extended periods of time. There is a critical need for reliable, safe, soft, implantable devices that can acquire and process neural and electrophysiological data, as well as deliver responsive stimulation. Organic materials and electronics hold great promise as the optimal interfaces with biological tissue owing to their biocompatibility, efficient ionic conductivity, and mechanical properties that resemble biotic materials.

Let me show you a beginning of a journey where dissolved scientific boundaries among different fields and an interdisciplinary way of thinking can create biomedical devices and therapeutic systems that will benefit human health.

Short Bio of Speaker: Dr. George Spyropoulos  (Professor, Physics Department) /Google Scholar

Register: https://forms.gle/SYoCGfSpk2GTBvdq7

Zoom Link: https://us02web.zoom.us/j/4039520498?pwd=ZVRzUm16T2gwTENwMlh0NnZ3T2FBUT09

Watch it Again: https://youtu.be/9KnrszlxrHM


9th of April 2021, Associate Professor Pelagia Karpathiotaki ( University of International Business and Economics (Beijing)) – Studies and Research Collaboration with China

Abstract:

In this talk, tips regarding the collaboration with the Chinese Higher Institutions will be revealed. Moreover, the priorities of the Chinese Institutions will be presented and key information will be provided

Short Bio of Speaker: Dr. Pelagia Karpathiotaki (Head of China Open University International Relations Office) /Google Scholar

Register: TBA

Zoom Link: TBA

Youtube Link to follow again this talk: https://youtu.be/xCzRRvDBNao


16th of April 2021, Professor Dimitrios Katsaprakakis ( Department of Mechanical Engineering, Hellenic Mediterranean University) – Approaching effective and rational energy transition in Crete

Abstract:

Since 2019, Crete has been included in the 20 pioneering islands of the European Commission regarding energy transition, within the frame of the “Clean Energy for E.U. Islands” initiative. This means that Crete has the role and the responsibility, among the other pilot and pioneering European islands, to pave the way towards effective and rational energy transition for the islands in Europe.

Energy transition has to be based on specific pylons, such as capacity building for the local community, energy-saving, transition to e-mobility, electricity and thermal energy production from renewables, and integration of decentralized projects within smart grids. Given the abundant wind, solar, and biomass potential available on the island, the energy transition can lead to 100% energy independence in Crete, through technically secure and economically effective projects. With the extensive involvement of the local citizens in the overall process, the energy transition can also constitute the basis for economic and social development for the Cretan society.

Short Bio of Speaker: Professor Dimitrios Katsaprakakis (Head of the Department of Mechanical Engineering) /Google Scholar

Register: https://forms.gle/5UrrP96tG4q9UeZZ9

Zoom Link: TBA

Youtube Link to follow again this talk: TBA


21st of April 2021, Professor Guglielmo Lanzani ( Physics Department of Polytechnico di Milano, Italy) – Bio-Optic Interfaces

Abstract:

The overarching goal of my research is to induce light sensitivity in living cells, in order to control cell functioning. We develop specific devices that behave as light actuators. In the years we studied planar interfaces, nanoparticles, and intramembrane molecular switches that are able to transduce light absorption into a biological signal. Fundamental questions regard the coupling mechanism at the abiotic/biotic interface, while the application is in the treatment of neurodegenerative diseases. Direct neuronal stimulation is a promising tool for addressing disorders such Alzheimer’s and Parkinson’s, but also in prostheses for the rescue of fundamental functions such as vision. An artificial retina prosthesis is one of the most advanced applications so far demonstrated in animal models. Controlling muscular cell contraction is another development under study that may lead to artificial organs as well as cyborgs.

 

Short Bio of Speaker: Professor Guglielmo Lanzani (Professor in Physics, Politecnico di Milano) /Google Scholar

Register: https://forms.gle/5UrrP96tG4q9UeZZ9

Zoom Link: TBA

Youtube Link to follow again this talk:

https://us02web.zoom.us/rec/share/KkVzol2zYXShpErg-QCkRPqwkjglcIlT_6OlgwL8hRv5jVFJC8MBnQlxBQM0nOKT.3qKoA9TZbDdeGXda?startTime=1619014290000


23rd of April 2021, Dr. Stavros Pissadakis (Director of Research, Institute of Electronic Structure and Lasers, Greece) – Lab-in-a-fiber photonic devices: technologies and prospects

Abstract:

The field of Optical Fibre Devices is conceptually re-directed towards the investigation of smart materials and versatile guiding platforms for attaining novel functionalities while targeting numerous applications in a “disruptive” approach. Different optical designs, processing, and material science technologies fuse together for constituting the “Lab-in-a-Fiber” concept, where benchtop operations are now scaled down and implemented into the robust optical fiber geometry. The photonic devices which will be presented, refer to configurations realized in standard, tapered and microstructured optical fibers, whereas their development blends diverse photonic, processing, and material technologies, demonstrating operational characteristics beyond the current state-of-the-art.

Short Bio of Speaker: Dr. Stavros Pissadakis /Google Scholar

Register: TBA

Zoom Link:


14th of May 2021, Dr. Manolis Stratakis (Institute of Electronic Structure and Lasers, Greece) – Ultrafast laser engineering of biomimetic surfaces: from lab to fab From Lab to Fab

Abstract: Nature has provided a plethora of functional surfaces exhibiting unique, complex hierarchical morphologies with dimensions of features ranging from the macroscale to the nanoscale. Such morphologies are behind the superior properties exhibited by the natural surfaces, including extreme wetting, antireflection, floatation, adhesion, friction, and mechanical strength [Mat. Sci Eng. R, Reports, 141, 100562, (2020)]. Femtosecond (fs) laser surface structuring has been employed to produce numerous biomimetic structures for a range of applications, including microfluidics, tribology, tissue engineering, and advanced optics. In this paper, we provide an overview of our recent research activities towards fs laser fabrication of biomimetic self-organized surface structures of variable shape and periodicity on different types of materials, including metals, semiconductors, and dielectrics. Such structures were produced upon line and large-area processing with femtosecond laser beams of tailored shape and polarization. The primary research objective is to perform a systematic investigation of the laser conditions that lead to structures with specific application-based properties such as, drag reduction, omnidirectional diffraction, and anti-reflection. The capability of fabrication of a plethora of complex structures, realized upon variation of the laser beam polarization, brings about a new concept in biomimetic structuring and it can be considered as an emerging laser-based fabrication approach. The structure formation mechanism is explained through a detailed investigation of the fundamental processes that characterize laser-matter interaction.

Short Bio of Speaker: Dr. Manolis Stratakis  (Head of Research) /Google Scholar

Register: https://forms.gle/2DyoTb2Ek25P6kZM9

Zoom Link: TBA on 10th of May 2021

View it Again: 


4th of June 2021, Dr. Angelos Xomalis (University of Cambridge, UK) – Metamaterials: metallic nanogaps for single-molecule sensing

Abstract: TBA

Short Bio of Speaker: Dr. Angelos Xomalis (Postdoctoral Researcher) /Google Scholar

Register: https://forms.gle/3kqyxcLMwR1ZqFWf7

Zoom Link: TBA on 14th of May 2021

View Again: https://www.youtube.com/watch?v=HyWHsIOe6Lk


11th of June 2021, Dr. Nikolaos Kalfagiannis  (UK) – Laser Annealing as a platform for optimising materials properties

Abstract:

Advanced materials are becoming increasingly important as substitutes for traditional materials and as active elements in new and unique applications. They have had a considerable impact on the development of a wide range of strategic technologies. Structural ceramics, biomaterials, composites, optical materials and advanced semiconductors fall under this particular category. Even though these materials can be fabricated by conventional schemes, material processing with lasers is an expanding field which is drawing considerable attention. In particular laser processing has been employed in many applications to modify materials’ properties. As lasers offer several advantages such as spatial and material selectivity, flexibility and automation, the scope for materials’ laser processing is further increased.

Recent developments in the use of lasers to probe material properties and importantly the fundamental understanding of the underlying laser-matter interactions are described in this seminar. We borrow examples from three important technological and research sectors, where laser processing can be proven a promising innovation:

– Plasmonic nanostructuring: Nanoconstruction of metals is a significant challenge for the future manufacturing of plasmonic devices. Such a technology requires the development of ultra‐fast, high‐throughput and low-cost fabrication schemes. Laser processing can be considered as such and can potentially represent an unrivalled tool towards the anticipated arrival of modules based in metallic nanostructures, with an extra advantage: the ease of scalability. Specifically, laser nanostructuring of either thin metal films or ceramic/metal multilayers and composites can result on surface or subsurface plasmonic patterns, respectively, with many potential applications. The photo‐thermal processes involved are discussed and processes to develop functional plasmonic nanostructures with pre‐determined morphology are demonstrated.

– Rapid photochemical conversion of sol-gel metal oxides for thin film transistor applications: Solution processed metal-oxide fabrication has offered huge promise for the development of high-mobility metal oxide semiconductors and devices that can be manufactured over large areas employing simple fabrication methods. Unfortunately, such methods require a thermal treatment step in order for the condensation and densification of the MO phase to occur. This process presents several disadvantages: the high thermal budget and prolonged exposure times, rendering the process incompatible with plastic substrates. To this end, laser annealing offers fast processing along with rapid, precise and selective energy delivery in area and depth via critical laser energy absorption, demonstrating that laser-induced photochemical conversion of sol–gel metal oxide precursors can be rapid and suitable for the manufacturing of large-area electronics.

– Manipulation of the optical and electronic properties of transparent conductive oxides (TCOs): Functional oxide materials including aluminium doped zinc oxide (AZO), indium tin oxide (ITO) and indium gallium zinc oxide (IGZO) are of interest for numerous electronic applications because of their visible light transparency combined with controllable electrical characteristics. The potential for nanosecond excimer laser annealing (ELA) as an ultra-rapid and localised heating mechanism with a low thermal-budget approach to improve the electrical and optical characteristics of radio frequency (RF) magnetron sputtered at room temperature is demonstrated.

Short Bio of Speaker: Dr. Nikolaos Kalfagiannis  (Senior Independent Research Fellow, Nottingham Trent University, UK) /Google Scholar

Register: 

Zoom Link: TBA on 7th of June 2021

Watch it Again: https://youtu.be/Y8TzjjaZLUU


18th of June 2021, Dr. Grigorios Iskos  (University of Cyprus, Cyprus) – Optoelectronics using Quantum Dots

Abstract:

The discovery of quantum confinement effects in nanometer-sized crystals embedded in glasses marked the birth of the field of colloidal quantum dots (CQDs). Four decades after the discovery, breakthroughs in synthetic approaches allow the fabrication of highly robust, air-stable CQDs with a narrow size distribution, multinary composition, and elaborate shapes and multi-shell structures. The synthetic progress has been combined with an extensive body of theoretical and experimental breakthroughs on the chemistry and physics of CQDs that pave the way towards a CQD optoelectronics technology. The talk will discuss important milestones on the roadmap towards CQD consumer products, focusing on photophysics and the optoelectronic properties of various classes of semiconductor CQDs.

Short Bio of Speaker: Dr. Grigorios Itskos (Associate Professor) /Google Scholar

Register: https://forms.gle/Ku4FKNorTHdvCeNYA

Zoom Link: TBA on 28th of May 2021

Watch it again: https://youtu.be/5sOj2JWhYiQ


25th of June 2021, Associate Professor Luis Pereira (The New University of Lisbon, Portugal) – Green Electronics

Abstract:

The growing demand of new and sustainable consumer printed electronics led to the increased interest in devices integrating natural materials. Here we present the wok resulting from recent research concerning the application of cellulosic materials and suberin (a cork component) in flexible electronic devices

First topic to be addressed are printable inks based on carbon fibers and zinc oxide nanoparticles mixed with cellulose derivatives that were optimized to create printed active layers at temperatures lower than 150 °C. This allowed the development of fully screen-printed sensors and electrolyte gated transistors on paper substrates

Second topic is related to the development of electrolytic membranes to be used as dielectric in transistors exploring the high capacitance that can be obtained by the formations of electric-double layers. The optimization of the cellulose dissolution method in alkaline hydroxides allowed for selfhealable ion-conducting membranes. Addition of suberin introduce anti-microbial characteristics to these membranes

Finally, we will show how cellulose nanocrystals can self-assemble in chiral nematic structures that mimic structures existing in nature. These can be then used as dielectric in field-effect transistors making possible the detection of circular polarized light in such devices

Short Bio of Speaker: Dr. Luis Pereira /Google Scholar

Register: TBA

Zoom Link: TBA on 17th of June 2021

Watch it again on YouTube Channel: https://youtu.be/ViiaEnrP78o


2nd of July 2021, Dr. Pythagoras Nagos  (Consultant, Switzerland) – Η Βιομηχανία της Κρουαζιέρας και η θέση της Ελλάδας (in Greek)

Abstract:

Ποιες είναι οι διαφαινόμενες καταναλωτικές τάσεις στον χώρο του τουρισμού και ειδικότερα της κρουαζιέρας μετά την πανδημία; Ποια είναι τα ανταγωνιστικά πλεονεκτήματα της Ελλάδας; Τι απαιτείται προκειμένου να αναπτύξουμε προορισμούς για την κρουαζιέρα στην επόμενη 5ετια με βάση τα ανταγωνιστικά πλεονεκτήματα της χώρας μας; Ενδεικτικός οδικός χάρτης

Short Bio of Speaker: Dr. Pythagoras Nagos (Consultant) /LinkedIn Profile

Register: https://forms.gle/djfxrdef6ZSMjWkZA

Watch Again: https://youtu.be/IxWKvWe0PPg

The Slides of the presentation can be found here 

Zoom Link: Only to registered participants