The Speakers 2021

Title: Managing Projects with Theory of Constraint Principles. 

Date: 23rd of September 2020

About the Speaker: 

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 portfolios using different management approaches, starting with traditional approaches and continuing with step-by-step approaches using modern project management methodologies, providing significant benefits to the organization. Achieving such improvements requires changes in managing, planning, scheduling, and queuing project work. Notably, it is shown how Theory of Constraints tools and applications enable at least doubling the number of projects that an 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.

Watch it again: https://youtu.be/L7FUHTu9FjQ 

Title: Environmental quality-Environmental protection: A global approach.

Date: 9th of October 2020

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=i_Jf5OwAAAAJ 

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. 

Watch it again: https://youtu.be/eYmrZ7lEE9M  

Title: The vision of the ATHENA European University Alliance. 

Date: 30th of October 2020

About the Speaker: 

https://scholar.google.com/citations?user=kXdc560AAAAJ&hl=el&authuser=1 

Abstract: This presentation will present the ATHENA European University along with the tasks assigned to HMU. The actions of the IRO in the last six months will also be reviewed. Finally, the office targets for the following three months will be presented. 

Watch it again:  https://www.youtube.com/watch?v=uhiT4Cng3kg  

Title: Geophysical Survey at Wabar MeteoCrater: Recent findings 

Date: 16th of October 2020

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=yHNNmIcAAAAJ 

Abstract: The study of impact craters on Earth has gained worldwide attention. It can be done by studying the ground surface using remote sensing (satellite), geological outcrops, drilling holes, and applying small-scale laboratory experiments to build dynamic models of crater formation and collecting geophysical data.

In this work, the near-crater sediments at the young Wabar crater field in Saudi Arabia have been investigated using magnetic, EM, seismic, and GPR methods. The main targets of this research were exploring the possibility of any remnant major pieces of the meteorite, investigating the meteoroid direction, and mapping the deformation structure associated with the meteorite impact. Many small pieces of the meteoroid were found and collected during the expeditions for further geochemical analysis.

Watch it Again:  https://youtu.be/kvgvKPY6JCE (starts from the 52 minutes and terminates at 1:45 hrs) 

Title: Artificial Intelligence/An Overview

Date: 23rd of October 2020

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=eap4_KIAAAAJ 

Abstract:  This talk will go through an introduction to artificial intelligence, from the early signs of its appearance (B. C.) to its latest developments. Definitions, concepts, and philosophical concerns regarding AI's importance and goals will be discussed. After a brief historical overview, examples of AI will be shown and some of AI’s earlier and recent applications in everyday life. The talk aims 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.

Watch it again: https://youtu.be/u4kkwRBaLCg  

Date:  30th of November 2020

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=FUFxMcQAAAAJ 

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 hundred 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) but still have matter properties. Besides, polaritons can propagate through defects without scattering (under special conditions), 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 unique properties of polaritons can improve devices such as lasers, light-emitting diodes (LEDs), waveguides, and all-optical switches.

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

Title:  Fullerene Like Structures 

Date: 6th of November 2020

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=DQ3QKoQAAAAJ 

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 the 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 the 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.

Watch it Again:  https://www.youtube.com/watch?v=4f3hEPtV5iU 

Title: Demonstration of current-induced Electro-Thermo-Mechanical instability anisotropic growth in metallic wire targets 

Date: 13th of November 2020

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=269z4WQAAAAJ 

Abstract: 

Results of the first demonstration of an electrothermomechanical (ETM) instability growth-induced anisotropy in high-current heated metallic wire targets will be presented. The anisotropy results from the associated difference between the longitudinal and azimuthal growth rates of the ETM instability. The study considers nonlinear magnetic diffusion and shock wave propagation in the conductor. Demonstrating anisotropy is important since it sheds light on the unexplained elliptical instability structures observed in magnetized liner experiments.

Watch it Again:   https://youtu.be/Dv8vQVlSByM  

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

Date: 20th of November 2020

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=2mhdTZ4AAAAJ 

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 has been considered the birthplace of marine energy since the ‘70s and is still one of the world’s leading research institutions. In this presentation, we will go through the fundamentals of marine energy conversion, we will discuss the significant challenges for its development. 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. 

Watch it Again: 

https://youtu.be/d1dFo6r3tVY  

Title: Novel X-ray sources with high coherence: new horizons in biomedical imaging

Date: 4th December 2020

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=QNkL61MAAAAJ 

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 fulfills the requirements for a semi-coherent X-ray source appropriate for imaging applications on the micro-scale. Laser installations supporting the generation of x-ray betatron-type radiation are much less costly than XFELs and are thus offered for development by many laboratories worldwide.

Watch it Again: https://youtu.be/rstNe3irkLA 

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

Date: 11th of December 2020

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=EMTrUsMAAAAJ 

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

Watch it Again: https://www.youtube.com/watch?v=TKBgfCHl_RE 

Title: Challenges and Perspectives of Energy in the Built Environment: From Smart Buildings to Smart Cities  

Date: 18th of December 2020

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=RnG8rQEAAAAJ 

Abstract: 

In an increasingly urbanized world, governments and international corporations strive to increase the productivity of cities, recognized as economic growth hubs, and ensure a better quality of life and living conditions for citizens. Although a significant effort is made by international organizations, researchers, and others to transform the challenges of cities into opportunities, the visions of our urban future are trending bleak. Social services and health facilities are significantly affected in negative ways due 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 metropolitan regions and cities and focuses on data collection and intelligent energy management for buildings, districts, and communities. Zero energy communities and technologies to achieve zero energy targets are analyzed. The role of smart grids as a critical 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 well-being are presented.

Watch it Again: https://www.youtube.com/watch?v=EYA0cNeKyL4&list=PL3OWQw2onmC_fjutflKRDT0OVw_1z0XFW&index=8&t=89s 

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

Date: 22nd of January 2021

About the Speaker: 

https://scholar.google.com/citations?user=FPLhYl4AAAAJ&hl=el 

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 differ dramatically between tissues and change dynamically over time, and it is suggested that they 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. Following the global scientific trend, we have moved 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 other biological problems.

Watch it Again: https://www.youtube.com/watch?fbclid=IwAR0WcTSBpX7bJ0NOxLw7MaMZnB0uvnCiyqnfYeuaecFhn872HuyJo7d_cdo&v=oi6QWpd2CcQ&feature=youtu.be 

Title: Α Brief introduction to the physics of ultra-cold atomic systems.

Date: 29th of January 2021

About the Speaker: 

https://scholar.google.com/citations?user=9BZIVP4AAAAJ&hl=el&authuser=1&oi=sra 

Abstract: 

In the last 25-30 years, the field of cold atomic gases has shown remarkable achievements, ranging in an extensive range of physics sub-fields. These include condensed matter physics, atomic physics, quantum optics, nonlinear physics, nuclear physics, etc. These systems are gaseous and very dilute, which is a great advantage compared to 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, I will give a very brief introduction in this talk and focus mainly on some basic principles. I will then discuss some remarkable properties, focusing primarily on their superfluid properties.

Watch it Again:  https://youtu.be/b_rJ7O7Mu6o 

Title: Printed Nanoelectronics: there is plenty of room down there 

Date: 5th of February 2021

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=p9OX1nAAAAAJ 

Abstract:

In silicon microelectronics, the ability to downscale critical dimensions of its building block, the field-effect transistor, has proven highly 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, leading to the proliferation of information & communication technologies with a remarkable impact on our daily lives 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.

Watch it Again: https://youtu.be/NXwr7IJyfms 

Title: An Introduction to Bioelectronics

Date: 12th of February 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=f122XtYAAAAJ 

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 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.

Watch it Again:  https://www.youtube.com/watch?v=VADaaCvZx3A&feature=share&fbclid=IwAR34j8xLGIlGSi3pi4x1HJDJBZEaf_bm0D4jTDwrQlXE3kKy2nsJNsuf_Sc 

Title:  Carbon-Based Electrodes for Solution-Processed Solar Cells

Date: 19th of February 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=eaAotvQAAAAJ 

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 include: 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 with high throughput. In this talk, I will focus on the recent advancements of this promising PV technology, its fundamental challenges, and its prospects. Finally, I will present my recent results in this research direction.

Watch it Again: https://youtu.be/p7n3XuWM3t8 

Title: Light-matter interactions in atomically thin semiconductors

Date: 26th of February 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=__PveGgAAAAJ 

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. How 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 the optical spectroscopy of these atomically thin semiconductors and their heterostructures for future applications but also fundamental physics. A description of the physical origin of the primary absorption and emission features in the optical spectra will be introduced.

Watch it Again: https://youtu.be/_GeqL3ETbiI 

Title: Atomic Physics with Accelerators: Projectile Electron Spectroscopy

Date: 5th of March 2021

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=CWwMukQAAAAJ 

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.

Watch it Again: https://youtu.be/xdS3Ya7IMBg 

Title: Multiphoton Lithography: Principles, Materials, and Applications

Date: 12th of March 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=tpHbomoAAAAJ 

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.

Watch it Again: 

https://youtu.be/YNZbFweHkRw  

Title: Nanoparticle-Based Photonic Devices

Date: 12th of March 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=Ph88dEEAAAAJ 

Abstract: 

In this talk, I will describe the fabrication and optical characterization of multilayer photonic structures. The 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. In this way, we have obtained porous multilayer structures.

I will then show how to exploit 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.

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

Title: Laser Direct Printing for Flexible Electronic Applications 

Date: 19th of March 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=n6vChpIAAAAJ 

Abstract: 

Current technological trends require the precise deposition of highly resolved features in a direct writing approach that preserves 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, the Laser-induced forward transfer (LIFT) technique can print electrical circuits relatively 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, circuit defects repairing, and biochemical sensors.

At the same time, the increasingly demanding requirements have highlighted the need for more thorough, all-encompassing research regarding the rheological characteristics of the printable fluids, their jetting dynamics, and their electrical, post-sintering properties, which will define the process reliability and aim towards its industrialization.

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

Title: Organic Electronics for Neural Interfaces

Date: 26th of March 2021

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=-PARGuUAAAAJ 

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.

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

Title: Studies and Research Collaboration with China

Date: 9th of April 2021

About the Speaker: 

https://www.linkedin.com/in/dr-karpathiotaki-pelagia-54014522/?originalSubdomain=cn 

Abstract: 

This talk will provide tips regarding collaboration with Chinese higher institutions. Moreover, the priorities of the Chinese Institutions will be presented, and key information will be provided

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

Title: Approaching effective and rational energy transition in Crete

Date: 16th of April 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=B6UqJbkAAAAJ 

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.

Watch it Again: https://www.youtube.com/watch?v=_jBQ7YOZtrc&list=PL3OWQw2onmC_fjutflKRDT0OVw_1z0XFW&index=21 

Title: Bio-Optic Interfaces

Date: 21st of April 2021 

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=Jdv3sw0AAAAJ 

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.

Watch it Again: 

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

Title: Lab-in-a-fiber photonic devices: technologies and prospects

Date: 23rd of April 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=6jv-SK4AAAAJ 

Abstract:

The field of Optical Fibre Devices is conceptually re-directed towards investigating innovative 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 to constitute the “Lab-in-a-Fiber” concept, where benchtop operations are scaled down and implemented into the robust optical fiber geometry. The photonic devices that 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.

Watch it Again: https://www.youtube.com/watch?v=z4BYduMFVPI&list=PL3OWQw2onmC_fjutflKRDT0OVw_1z0XFW&index=22 

Title: Ultrafast laser engineering of biomimetic surfaces: from lab to fab From Lab to Fab

Date: 14th of May 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=LEmHpTIAAAAJ 

Abstract:

Nature has provided many 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.

Watch it Again: 

Title: Metamaterials: metallic nanogaps for single-molecule sensing

Date: 4th of June 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=jNMlQYsAAAAJ 

Abstract:

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

Title: Laser Annealing as a platform for optimizing materials properties

Date: 11th of June 2020

About the Speaker:

https://scholar.google.com/citations?hl=el&authuser=1&user=gZxfbWgAAAAJ 

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.

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

Title: Optoelectronics using Quantum Dots  

Date: 18th of June 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&authuser=1&user=SAqAatoAAAAJ 

Abstract:

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

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

Title: Green Electronics

Date: 25th of June 2021

About the Speaker:

https://scholar.google.com/citations?user=PGX6W7oAAAAJ&hl=el&oi=ao 

Abstract:

The growing demand for new and sustainable consumer printed electronics has led to an increased interest in devices that integrate 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

The first topic to be addressed is 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.

The second topic is related to the development of electrolytic membranes to be used as dielectric in transistors, exploring the high capacitance that the formations of electric-double layers can obtain. The optimization of the cellulose dissolution method in alkaline hydroxides allowed for self-healable ion-conducting membranes. The addition of suberin introduces anti-microbial characteristics to these membranes.

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

Watch it Again:  https://youtu.be/ViiaEnrP78o 

Title: Introduction to tribology and green tribology 

Date: 7th of October 2021

About the Speaker:

https://www.vdu.lt/cris/entities/person/937b71f0-debb-43bc-8921-d2609b41ddb8 

Abstract:

Watch it Again: https://youtu.be/T1K3FWUckdM 

Title: Tunable Laser Sources for Ultrashort Pulses Generation. 

Date: 22nd of October 2021

About the Speaker: 

https://scholar.google.com/citations?user=rHcnac4AAAAJ&hl=en 

Abstract: 

Watch it Again:  https://youtu.be/agYLfv6spyE  

Title: Atomic-scale computational modeling of materials: synergy of theory and experiment towards novel technological applications

Date: 19th of November 2021

About the Speaker:

https://scholar.google.com/citations?hl=el&user=9JBmZ0QAAAAJ 

Abstract:

Materials modeling at the atomic scale is well established as an indispensable tool to explain available experimental data, but also opens new directions in research by proposing novel materials and phenomena. The most popular method for the quantum-mechanical atomistic study of materials is the so-called Density Functional Theory (DFT) approach, which is an effective and robust way to deal with the challenging many-body problem of interacting electrons. This talk will first briefly introduce the basic concepts and technicalities of DFT and then highlight representative cases of joint experimental and DFT-based computational work on the design and optimization of state-of-the-art devices in diverse fields of technology. Examples include work on solar cells with outstanding photo-conversion efficiencies and on transistors with high carrier mobilities and operational stability. We will conclude with the recently achieved laser-induced transfer of two-dimensional materials, such as graphene, a new paradigm for printing even atomically-thin systems with high-quality and well-defined patterns.

Watch it Again: https://youtu.be/UvLarmncnn8  

Title:  Technology for Bioelectronic Medicine

Date: 26th of November 2021

About the Speaker:

https://scholar.google.com/citations?user=66BcnF0AAAAJ&hl=el&oi=ao 

Abstract:

Bioelectronic medicine provides a new means of addressing disease via the electrical stimulation of tissues: Deep brain stimulation, for example, has shown exceptional promise in the treatment of neurological and neuropsychiatric disorders, while stimulation of peripheral nerves is being explored to treat autoimmune disorders. However, significant challenges remain to be addressed in bringing these technologies to patients at scale. Key among these is our ability to establish stable and efficient interfaces between electronics and the human body. I will show examples of how this can be achieved using new electronic materials and devices engineered to communicate with the body and evolve with it.

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

Title: The Floriculture Research Group of the University of Chile. 

Date: 3rd  of December 2021

About the Speaker: 

https://scholar.google.com/citations?hl=el&user=-QCr_O4AAAAJ 

Abstract: 

Chile presents a rich biodiversity of vascular plants with almost 5,000 native species, about 50% endemic. Many of these species show an attractive ornamental value; therefore, the Floriculture Research Group (GIFLOR) of the University of Chile has been focused on the propagation, characterization, and breeding of some of these species, particularly in genera such as Alstroemeria and Pasithea (geophytes); and Junellia, Malesherbia, Salpiglossis and Schizanthus (herbaceous perennials). In vitro and ex Vitro studies have been conducted using different explants and media to achieve an efficient propagation method. Flower color and scent have been analyzed using various methodologies, including phenotyping (color chart, color meter, morphology), sensory (trained and non-trained panel), chemical (HP-LC, GC-MS), and molecular (gene expression, molecular markers). Promissory species and genetic lines of Alstroemeria have been bred using interspecific hybridization by embryo rescue. Some of these hybrids are being evaluated to validate their performance as new varieties for the ornamental plant market.

Watch it Again:  https://youtu.be/agYLfv6spyE  

Title: Developments in Laser Inertial Fusion Energy

Date: 10th of December 2021

About the Speaker:

https://scholar.google.com/citations?hl=el&user=269z4WQAAAAJ 

Abstract:

Inertial Fusion Energy is a topic of scientific curiosity, as it involves understanding the science involved and exploring the possibility of future energy production. This presentation will provide an update on the current status of IFE and present the research that takes place at the Institute of Plasma Physics and Lasers (IPPL).  

Watch it Again:  https://youtu.be/6BwiU1a61vg 

Title:  Device Synthesis

Date: 17th of December 2021

About the Speaker:

https://scholar.google.com/citations?hl=el&user=mgg5ZRgAAAAJ 

Abstract:

In a nutshell, device synthesis is a method designed to complement material synthesis. It could be considered as “adapting the device structure to the material properties” or as “using the device structure to compensate for nonideal material properties”. While placing all the elements together to define “Device Synthesis” is probably new, large parts have been practiced at least since the 1960s. For example, we tend to forget that the device structures used today were found best to fit the properties of Si (and SiO2). In this talk, I will introduce the new methodology and demonstrate it primarily in the context of solar cells. If you have already watched the OMD YouTube channel, I am going to present a different perspective and the chem-Phys examples are different (i.e., you won’t be bored).

Watch it Again: https://youtu.be/Np63phyhZMg