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Let's Talk About Science!

The UP SPIE Student Chapter has the pleasure to announce the 1st edition of Let's Talk About Science! Next Friday we will have the visit of Dr. Lorenzo Pavesi (U. Trento, Italy), Dr. Nuno Peres (U. Minho, Portugal), Dr. João Relvas (U. Porto, Portugal). It will be an afternoon plenty of nice talks and discussions! Let's Talk About Science! Don't Miss It! Be Where The Action Is!
When Nov 14, 2014
from 02:30 to 05:00
Where Room -120, FCUP – FC3 – Physics and Astronomy Department
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The invited lecturers are:

- Dr Lorenzo Pavesi from Nanoscience Laboratory at the University of Trento in Italy will talk about Silicon Photonics: a new technology platform to enable low cost and high performance photonics

- Dr. Nuno Peres from the Physics Department at the University of Minho in Portugal will talk about controlling terahertz radiation with graphene

- Dr. João Relvas from the Institute for Molecular and Cell Biology at the University of Porto in Portugal will give us a personal perspective about the future.


NEW: Live Broadcast with OSA Student Chapter at University of Kent

Don’t Miss It! Be Where The Action Is!

The full program is attached to this e-mail and some detailed information about the lectures is provided next.


Author: Dr. Lorenzo Pavesi from Nanoscience laboratory at the University of Trento in Italy

Title: Silicon photonics: a new technology platform to enable low cost and high performance photonics


Abstract: Photonic devices which can be fabricated using the same advantages of microelectronics: smaller, cheaper and faster. This is what silicon photonics allows. Thousands of photonic devices integrated in a few square cm which are able to transmit signal over long distances at high speed. Optical networks which handle tens of channels and route them all across an electronic chip. An entire bio-lab with the size of a nail. Solar cells with conversion efficiency beyond the thermodynamic limit of silicon cells. These are all examples where the silicon photonics paradigm has shown all its potential. In this talk the basic and state of the art of silicon photonics will be discussed together with the relevance of silicon nanophotonics to widen its application.


About Professor Lorenzo Pavesi: is Professor of Experimental Physics and head of the Department of Physics at at the University of Trento (Italy). Born the 21st of November 1961, he received his PhD in Physics in 1990 at the Ecole Polytechnique Federale of Lausanne (Switzerland). In 1990 he became Assistant Professor, an Associate Professor in 1999 and Full Professor in 2002 at the University of Trento. He leads the Nanoscience Laboratory (25 people), teaches several classes at the Science Faculty of the University of Trento. He founded the research activity in semiconductor optoelectronics at the University of Trento and started several laboratories of photonics, growth and advanced treatment of materials. He was the first president and founder of the IEEE italian chapter on Nanotechnology. He has directed more than 25 PhD students and more than 25 Master thesis students. His research activity concerned the optical properties of semiconductors. During the last years, he concentrated on Silicon based photonics where he looks for the convergence between photonics and electronics by using silicon nanostructures. He is interested in active photonics devices which can be integrated in silicon by using classical waveguides or novel waveguides such as those based on dynamical photonic crystals. His interests encompass also optical sensors or biosensors and solar cells. In silicon photonics, he is one of the worldwide recognized experts, he organized several international conferences, workshops and schools and is a frequently invited speaker. He manages several research projects, both national and international. He advises EC on photonics and is a frequently invited reviewer, monitor or referee for photonics projects by several grant agencies. He is an author or co-author of more than 280 papers, author of several reviews, editor of more than 10 books, author of 2 books and holds six patents. He is chief speciality editor of the section Optics and Photonics of Frontiers in Materials, in the editorial board of Research Letters in Physics and he was in the editorial board of Journal of Nanoscience and Nanotechnologies, in the directive council of the LENS (Florence), in the Board of Delegates of E-MRS. In 2001 he was awarded the title of Cavaliere by the Italian President for scientific merit. In 2010 and 2011 he was elected distinguished speaker of the IEEE- Photonics society. He is a senior member of SPIE and IEEE. He holds an H-number of 48 according to the web of science.

 


Author: Dr. Nuno Peres

Title: Controlling terahertz radiation with grafene


Abstract: In this communication we describe the way terahertz radiation interacts with graphene micro-structures. After motivating this problem, the conductivity of graphene is discussed and two types of optical transitions are identified: inter- and intra-band ones. We then introduce the solution of Maxwell's equations for surface waves coupled to the charge density of graphene (surface plasmon polaritons). The calculation is generalized for the double layer problem, and both the acoustic and optical modes are identified. The excitations of surface plasmon polaritons by a diffraction grating and by a metal contact are discussed, and a connection is made to recent experiments. Finally, a semi-analytical method for the solution of problem with a periodic conductivity is introduced and an application is presented in connection with graphene micro-ribbons.


About Dr. Nuno Peres: Develops is research in the field of condensed matter theory. In particular, during the last 10 years he has worked intensively in the optical properties of graphene and related materials. His recent interests have been on how terahertz radiation interacts with graphene micro-structures. At present Nuno Peres is Full Professor at the Physics Department of the University of Minho. He is also a member of the Academy of Sciences of Lisbon.

 

Author: Dr. João Relvas

Title: Future: Next exit. A personal perspective


Abstract: Scientific discovery is a process for gaining knowledge and this knowledge is likely to shape the future of Humankind.  From the point of view of Medicine and of the Neurosciences in particular such knowledge not only will help us to fight aging and disease, but also to better understand and ultimately master the works of the brain and  the nature of thought, consciousness and selfhood. Scientific and technological progress put us in a unique position in the history of the world, as we are the first living organism to be able to (re)define its own biological future. What are the options? How are we going to build this future?


About Dr. João Relvas:  Prof. João Bettencourt Relvas (IBMC) obtained his PhD in Molecular Genetics (1997), and did his post-doc at the University of Cambridge before moving to Switzerland to establish his own research group at the ETH in Zurich in 2002. He moved to the IBMC in 2009, where he heads the glial Cell Biology lab, focussing in myelination and demyelinating diseases. He is also the coordinator of the Neurosciences Division at the IBMC and an invited Professor at the Faculty of Medicine of the University of Porto. He is a member several national and international neuroscience societies, and is in the editorial board of specialist neuroscience.


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