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26 February 2009 : "Recent Advances in Theory of Spintronic Phenomena"

Fondation Nanosciences

Thursday 26 February 2009 at 4pm

Amphith��tre 15 de l'Ecole PHELMA Polygone (formarly called ENSERG)

Mairbek Chshiev, holder of a 'Chaire d'Excellence' at the Foundation will be giving a seminar entitled "Recent Advances in Theory of Spintronic Phenomena".

The Foundation's Seminars are free of charge and don't request any subscription. We hope to see you soon enjoying one of these scientific exchanges of high-quality.

Abstract and biography

Providing permeability to microcapsules with incorporated ion channels

Fondation Nanosciences

�Donald Martin holder of a 'Chaire d'Excellence' at the Foundation, has been invited to present his work with a seminar entitled "Providing permeability to microcapsules with incorporated ion channels" at two different dates this month:

On Monday March 9th at 2pm at the 'Laboratoire de Spectrom�trie Physique',on the site of the St Martin d'H�res campus.(Further information)
On Tuesday March 10th at 11am, in the seminar room C3-104 at the 'IRTSV', CEA Grenoble (iRTSV announcement)

Dynamics of a Nonlinear Luttinger Liquid

Fondation Nanosciences

Leonid Glazman, holder of a 'Chaire d'Excellence' at the Foundation will be giving a general theory seminar for the Polygone Scientifique on Friday March 13 at 11am at the Institut Laue Langevin (common building - room 106).

For further information, please contact Alison Mader (mader@ill.fr).

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26 March 2009 : "Complexity and Nanosystems ... ...

Fondation Nanosciences

Thursday 26 March 2009 at 4pm

Amphith��tre 15 de l'Ecole PHELMA Polygone (formarly called ENSERG)

Michael ROUKES, holder of a 'Chaire d'Excellence' at the Foundation and globally renowned Professor at Caltech (California Institute of Technology)� will be giving a seminar entitled "Complexity and Nanosystems : From "Craft" ? to Technology ? to New Frontiers".

The Foundation's Seminars are free of charge and don't request any subscription. We hope to see you soon enjoying one of these scientific exchanges of high-quality.

Abstract and biography

STED Microscopy: Focusing on Mitochondria

Fondation Nanosciences

Thursday 18 June 2009 at 4pm

Lecture Hall 15 at the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Dr Stefan Jakobs, from Max Planck Institute for Biophysical Chemistry, is one of the first investigators of the STED method.

He'll be delighted to give a lecture entitled "STED Microscopy:
Focusing on Mitochondria" when he'll share� some parts of his work with the audience.

Abstract and biography

This seminar is the introductory lecture of the Workshop "SUPER RESOLUTION OPTICAL MICROSCOPY" which will take place at the 'Laboratoire de Spectrom�trie Physique' the following day (Friday 19 June).

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More information about the Workshop

The Foundation's seminars and worshops are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

Are the electronic properties of conjugated polymers deformable?

Fondation Nanosciences

Monday 6 July 2009 at 4pm

Lecture Hall 15 at the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Paul Barbara is the Director of the Center for Nano- and Molecular Science and Technology at the University of Texas at Austin.

He'll be delighted to give a lecture entitled "Are the electronic properties of conjugated polymers deformable?" when he'll give a brief overview of the Center he's directing, as well as some parts of his work with the audience.

Abstract and biography

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

Novel Multifunctional Inorganic-Organic Hybrid Semiconductors with Extraordinary Properties

Fondation Nanosciences

Thursday 1st October 2009 at 4pm

Lecture Hall 15 at the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Yong ZHANG joined the Electrical and Computer Engineering Department of the University of North Carolina at Charlotte (UNCC) in April 2009 as a Bissell Distinguished Professor of Engineering.

He'll be delighted to give a lecture entitled "Novel Multifunctional Inorganic-Organic Hybrid Semiconductors with Extraordinary Properties" when he'll share an update on his work with the audience.

Speaker's Abstract and biography

Download the presentation

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

Brain Computer Interfacing:From the laboratory to real life applications

Fondation Nanosciences

Thursday 26 November 2009 at the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Tetiana Aksenova holds one of the Nanosciences Foundation "Chaire d'Excellence" and works at the CEA-LETI.�

She'll be delighted to give a lecture entitled "Brain Computer Interfacing:From the laboratory to real life applications " when she'll share an update on her recent work with the audience.

Speaker's Abstract and biography

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

Protecting and recovering information in entangled open systems

Fondation Nanosciences

Thursday 29 April 2010 at the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Speaker's Abstract and biography

In this talk we analyze strategies to protect and recover information when entangled systems are subjected to unavoidable decoherence mechanisms.

We focus on the situations in which some of the information lost to the reservoirs can be recovered through measurements performed on the environment of the affected system. In particular, we use the quantum trajectories method to show how much of the dynamics of the entanglement of the system can be inferred by such measurements with the advantage that in some cases - like pure dissipation - this method corresponds to a clear physical picture.

We also show that by combining environment measurements with smart encoding of qubits and simple feedback mechanisms one is able to locally protect the entanglement shared by remote parties.

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

Fundamental studies of superconductors using scanning magnetic imaging

Fondation Nanosciences

Thursday 27 May 2010 at 4pm

Amphitheatre 15 of the 'Ecole PHELMA Polygone' (formarly called ENSERG)

John Kirtley is a consulting Professor at Standford University and holds a Chair of Excellence at the Nanosciences Foundation since his project ?SUPER-NANO-CHARAC? was selected in 2009.

Therefore this seminar will be an excellent opportunity to know more about his research interests and his scientific projects in Grenoble.

Speaker's Abstract and biography

Although superconductivity is arguably one of the best understood phenomena in solid state physics, there is still much to learn. Despite nearly 25 years of effort, there is still no consensus on the mechanism producing the high critical temperatures in the cuprate perovskite superconductors. The heavy fermion superconductors have large carrier masses, strong interaction between spin and charge degrees of freedom, and potentially a wide variety of Cooper pairing symmetries. The non-cuprate perovskite superconductor Sr2RuO4 is believed to have a p-wave pairing state that breaks time reversal symmetry. Interest in unconventional superconductors has been reinvigorated with the discovery of iron-based compounds with high critical temperatures.

In this talk I will review some of the past and potential contributions of scanning magnetic imaging to our fundamental understanding of superconductivity.
For example, scanning SQUID microscopy (SSM) played a central role in the demonstration of dx2-y2 pairing symmetry in the cuprate high-Tc superconductors. Magnetic force microscopy provides a means to measure the absolute value, temperature dependence, and spatial homogeneity of the superfluid density in superconductors, providing clues to their pairing symmetry. Scanning SQUID susceptometry images inhomogeneous superfluid density, including striking ?stripes? in the pnictide superconductor Ba(Fe1-xCox)2As2 (Ba-122), and reveals paramagnetic shielding just above the critical temperature in this material. Finally, SQUID microscopy reveals a novel ?pairing? of superconducting vortices in Ba-122.

Download the slides - part I

Download the slides - part II

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

" Charge transport in molecular and semiconductor nanowires ?

Fondation Nanosciences

Tuesday 22 June 2010 at 4pm

Amphitheatre 15 of the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Jim Greer is Head of Electronics Theory and Head of Graduate Studies at the Tyndall National Institute, University College Cork, Ireland.

Download the presentation slides

Speaker's Abstract and biography

Microelectronics technology has made great progress by scaling down transitor sizes. However in nanoelectronic design, there is an advantage in starting on an atomic scale and use a full quantum mechanical treatment for electron transport. Approximations can then be introduced to allow for predictive simulations for transistors with feature sizes of a few nanometers. In this case, it is easier to start with "small" systems such as molecular tunnel junction and to develop rigorous treatments of the electronic structure combined with transport, notwithstanding the difficulties in obtaining well-defined experimental benchmarks.
Results for predicting currents across molecular tunnel junctions and challenges associated with the accurate theoretical treatment of charge transport on the nanoscale and the need for accurate calculations of electronegativity to predict currents is highlighted, The relationship of electronegativity to elecron-electron correlation is given and related to electron transport. The talk concludes with examples of carrier scattering in silicon nanowires.�

This Seminar will be shortly followed by Baruch Feldman's talk.

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

" Charge transport in molecular and semiconductor nanowires ?

Fondation Nanosciences

Tuesday 22 June 2010 at 4pm

Amphitheatre 15 of the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Baruch Feldman is doing his first postdoctoral appointment at the Tyndall National Institute, University College Cork, Ireland.

� Download the presentation slides

Speaker's Abstract and biography

I will describe our recent applications of the non-equilibrium Green's function (NEGF) method to electronic transport in two different systems.� The junctionless Si nanowire (SiNW) transistor was recently fabricated at Tyndall, and has desirable short-channel characteristics, as well as not needing junctions.�
We recently predicted that this device can work at scales as small as ~3 nm gate length and ~1 nm SiNW diameter.� In such a thin SiNW, dopant delocalization occurs over length scales comparable to the gate length, making the junctionless design more robust against dopant fluctuations, while making junctioned designs difficult to achieve.�
I will also discuss our simulations of a junctionless carbon nanotube (CNT) transistor and end the talk with a preview of our forthcoming paper on our NEGF code TIMES.

This Seminar will be preceded by Jim Greer's talk.

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

Nanostructured Organic Light-Emitting Diodes for Energy Efficient Lighting

Fondation Nanosciences

Tuesday 22 June 2010 at 4pm

Amphitheatre 15 of the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Dr. Samuel Mao is a career staff scientist of Lawrence Berkeley National Laboratory and an adjunct professor at the college of engineering of the University of California at Berkeley.

Speaker's Abstract and biography

Lighting represents one-fifth of the electricity consumption. The U.S. Department of Energy has set an ambitious goal to develop advanced solid-state lighting technologies that, compared to conventional lighting approaches, are much more energy efficient, longer lasting, and cost competitive.

One of the primary energy efficient solid-state lighting technologies is based on organic light-emitting diodes (OLEDs), which differ fundamentally from today?s incandescent and fluorescent devices. Although significant progress has been made since the invention of OLEDs some twenty years ago, the technology has yet to reach the full potential of solid-state lighting.

In this talk, challenges involved in OLED development will be identified and experiments exploring high efficiency OLEDs will be discussed. In particular, OLEDs incorporated with micro- and nano-structures for enhanced charge injection and light extraction have demonstrated significantly improved performance. A nanoscale organic-inorganic hybrid approach based on semiconducting quantum dot-polymer composites will also be examined.

The talk will conclude with a brief introduction of a suite of other energy technologies that the speaker is currently studying.

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.

Carbon Electronics ? From Material Synthesis to Circuit Demonstration

Fondation Nanosciences

Thursday 23 Septembre 2010 at 4pm

Amphitheatre 15 of the 'Ecole PHELMA Polygone' (formarly called ENSERG)

Philip Wong is Professor of Electrical Engineering at Standford University and holds a Chair of Excellence at the Nanosciences Foundation since 2007.

His seminar will be an excellent opportunity to know more about his research interests and his scientific projects and interactions in Grenoble.

This year marks the 13th anniversary of the first publication of the carbon nanotube transistor. While there have been significant accomplishments in fundamental understanding and discovery, the engineering work that is required to harness carbon nanotube into useful technologies is just beginning.

This presentation reviews recent progress in carbon nanotube electronics, focusing on digital logic applications including the transistor and the interconnect wires. We will start with material synthesis using chemical vapor deposition and present a method for growing predominantly aligned carbon nanotubes over hundreds of microns over full 4-inch wafers. Techniques to transfer these carbon nanotubes to arbitrary substrates will be presented. This enabled the development of a variety of applications including three-dimensionally integrated carbon nanotube circuits. This is followed by device fabrication and circuit demonstration, showing rail-to-rail, cascadable logic gates that point the way to large scale integrated circuits. We will present some recent advances in mitigating the impact of metallic carbon nanotubes for transistor applications and forming good metal to carbon nanotube contacts. Compact device models have been developed for circuit and system-level performance estimation and circuit design. The models are relatively robust and have been used successfully in many academic research groups independent of our involvement. Finally we will conclude with recent results of an experimental demonstration of GHz operation of ring oscillator digital CMOS circuits using metallic carbon nanotube and graphene as interconnects.

The Foundation's seminars are free and can be attended by everyone. We hope many of you will enjoy this scientific exchange of quality.