Science of Nanoscale Systems and their Device Applications
Science of Nanoscale Systems and their Device Applications
2006 NSEC Events

 

January 19, 2006
NanoTechnology & Business Forum
4:00-6:00 p.m. Greenberg & Traurig, One International Place, Boston, MA
Speaker: Charles M. Yarborough, M.D., M.P.H., Senior Managing Scientist, E*ponent
Topic: "Can Past Predict Future Financial Risks of Nanotechnology?"
Speaker: Adam Erlich, President, Igeneco
Topic: "Technology Commercialization through Sales & Marketing"
JanNanoforum.pdf

January 26-28, 2006
Frontiers in Nanoscale Science and Technology Workshop
Topics: Quantum Information Processing, Imaging at the Nanoscale, NanoPhotonics, and NanoElectronics.
Location: Stanford Court Hotel, San Francisco, CA
Participant registration is now being accepted. For more information: See the FNST website.

February 9, 2006
NSEC Seminar: Dr. Marko Loncar will speak on: Light-Matter Interaction in Nanophotonic Devices
12:00 noon. Harvard University, Maxwell Dworkin room 119
The interaction of light and matter on a nano-scale level will be discussed. The phenomena include strong light confinement within photonic crystals, efficient light generation in engineered semiconductors and nano-scale optomechanics. I will review design, fabrication and characterization of these state-of-the-art nanophotonic devices, and discuss their application in optical signal processing, life sciences and quantum optics.

February 16, 2006
NSEC Seminar: Dr. Ayman F. Abouraddy, M.I.T. will speak on: Multimaterial Fiber Devices and Array Systems
12:00 noon, Harvard University, Jefferson Hall, room 356
A new class of fiber devices is introduced. A macroscopic preform containing semiconducting, insulating, and conducting materials is fabricated and thermally drawn into kilometer-length fibers. Functional optoelectronic fibers assembled into arrays enable large-volume electromagnetic-field measurements and thermography. The prospect of mid-infrared supercontinuum generation in multimaterial nonlinear fibers is also discussed.

February 24, 2006
Seminar: Dr. Silvano De Franceschi, Senior Scientist CNR-INFM Laboratory, Nazionale TASC, Trieste, Italy will speak on: Control of Quantum Transport in Nanostructures
1:00 p.m., Harvard University, Lyman 425

February 27, 2006
Herchel Smith Undergraduate Science Research Symposium
4:00 p.m., Fairchild Biochemistry Building, 7 Divinity Avenue, Cambridge, MA
A symposium featuring posters and brief presentations by recipients of the 2005 Herchel Smith Harvard Summer Undergraduate Research Fellowship, representing the domestic and international research and laboratory activities of some of the best undergraduate scientists in the Harvard community. The purpose of the symposium is to provide an opportunity for these outstanding scholars to present their research, and for prospective applicants to become familiar with the types of activities that have been supported by the fellowship.

March 1, 2006
Applied Mechanics Colloquium: Rachel S. Goldman from University of Michigan will speak on: Self Assembled Nanostructures: Buffer Layer Patterning and Confined States
4:00 p.m. Harvard Univeristy, Pierce Hall room 209

March 10, 2006
Radcliffe Biodiversity Symposium: "Biodiversity in the Anthropocene"
Harvard University, Maxwell Dworkin Hall, room G115
http://www.radcliffe.edu

March 15, 2006
Deadline for applications to Kavli Institutes program "Strongly Correlated Phases in Condensed Matter and Degenerate Atomic Systems" Program will be held at The Kavli Institute for Theoretical Physics at UCSB, January 29-June 15, 2006.
For more information on The Kavli Institute: http://www.kitp.ucsb.edu/.
To apply online for the program: http://www.kitp.ucsb.edu/apply/apply.html.

March 16, 2006
NanoTechnology & Business Forum
4:00-6:00 p.m. British Consulate General-Boston, One Memorial Drive, Cambridge, MA
Speakers: Steve Lerner, CEO, GigaSys Corp. Topic: "Nanotechnology: Someone Has Got to Build it".
Jon Edelson, MD, Venture Partner, Ascent Biomedical Ventures. Topic: "Nanotechnology: Trends and Opportunities in Health Care".
MarNanoForum06.pdf

March 21, 2006
Special NSEC Seminar: Kartik Srinivasan, Dept. of Applied Physics, California Institute of Technology will speak on: Semiconductor optical microcavities for chip-based cavity QED
12:00 noon Harvard University, Jefferson Hall room 356

March 23, 2006
Hatice Altug, Applied Physics Dept., Stanford University will speak on: Photonic crystal devices for nano- and bio-photonics
12:00 noon, Harvard University, Jefferson Hall room 356

April 7, 2006
DARPA Center for Optofluidic Integration Workshop
This Workshop will provide the DARPA Center members a forum for sharing their current research results and activities, planning collaborations and informal interactions with the Center's Industrial Partners and invitees.
Harvard University, Maxwell Dworkin room G115
http://www.optofluidics.caltech.edu/retreat/

April 8-9, 2006
Forum USA 2006, MIT Stata Center, 32 Vassar Street, Cambridge, MA.
24 companies, 5 research organisms, EDUFRANCE, 15 French universities and schools, 6 North-American universities, Bernard Gregory Association and different offices of the French Embassy in the US.
There will also be a specific space dedicated to Company Creation where participants will have the opportunity to better understand all the links in the Innovation chain in France. 10 actors of company creation will be there: OSEO Anvar, Provence Promotion, ARD Ile de France- Conseil Régional Ile de France, CNRS, Inserm Transfert, Retis, Invest in France, Conseil Régional Ile de France, Bretagne Internationale and Genopole.
http://www.forumusa.org/

April 10, 2006
Special NSEC Seminar. Michael Hochberg from Caltech will speak on: Integrated Nonlinear Optics in Silicon
3:00 p.m. Harvard University, Pierce Hall room 209
Silicon-on-Insulator provides an intriguing system for developing massively integrated optics.  By leveraging the processes and systems developed for electronics fabrication, it is possible to make highly repeatable, scaleable devices.  Because the mode concentration in silicon waveguides is two orders of magnitude higher than in fibers, it is possible to construct very compact nonlinear optical devices within this system, enabling the miniaturization and integration of ultrafast nonlinear devices.
We have demonstrated Pockels’ Effect-based ring modulators, optical rectification based detectors, four-wave mixing devices, and ultrafast intensity modulators, which operate at speeds in excess of 2 Terahertz.  By integrating optical polymers through evanescent coupling to high-mode-confinement silicon waveguides, the effective nonlinearity of the waveguides can be greatly increased.   The combination of high mode confinement, multiple integrated optical components, and high nonlinearity produces all-optical ultrafast devices operating at power levels compatible with telecommunication systems.  Although far from commercial modulator standards in terms of extinction, the modulator devices are a first step toward large scale integrated ultrafast optical logic in silicon, and are two orders of magnitude faster than existing free-carrier based silicon devices.

April 14, 2006
Condensed Matter and Applied Physics Colloquium
Ania Bleszynski from Harvard University will speak on: Imaging Electrons in Semiconducting Nanostructures: 2DEG's, Quantum Dots, and Nanowires
4:00 p.m. Harvard University, Pierce Hall room 307
Scanning probe microscopy (SPM) is a powerful tool that allows us to probe and manipulate electrons at the nanoscale. We have used a liquid helium cooled SPM with a conducting tip to image electrons in three types of semiconducting nanostructures: two-dimensional electron gases (2DEG's), quantum dots, and nanowires. Our images are obtained by scanning a charged tip over the sample and recording changes in device conductance as a function of tip position. We have directly imaged coherent electron wave flow from a quantum point contact (QPC) defined in a GaAs/AlGaAs 2DEG. The phase coherence of the electrons over distances of many microns makes it possible to form an imaging electron interferometer, which I present. We have also used SPM to image a one-electron quantum dot formed in a 2DEG by surface gates. Few electron quantum dots are promising candidates for both
quantum information processing and single electronics. Imaging and manipulating electrons in quantum dots promises to be useful in understanding and building circuits for these purposes. Lastly, I will present images of InAs and InAS/InP nanowires, grown catalytically from Au nanoparticles, with diameters of ~50nm. Semiconducting nanowires,
assembled in a bottom-up approach, have recently seen an immense amount of
research activity. Our images provide a detailed understanding of where the electrons are in the wire and how they flow through it. I demonstrate the ability of the SPM tip to tune the number of electrons in an ultrasmall InAs/InP nanowire quantum dot down to zero in a spatially dependent way.

April 17-21, 2006
Quantum Information and Computation IV Conference (OR25).
Gaylord Palms Resort and Convention Center, Orlando, Florida
Call for Abstracts due October 3, 2005
http://www.spie.org/Conferences/Calls/06/dss/conferences/index.cfm?fuseaction=OR25

April 21, 2006
Special NSEC Seminar: Professor Jelena Vuckovic from Stanford University will speak on: Nanophotonic devices and circuits for classical and quantum information processing
3:00 p.m. Harvard University, Maxwell Dworkin G-115
We have recently demonstrated a number of classical and quantum information processing devices enabled by strong light-matter interaction in photonic crystals, including quantum dot-photonic crystal cavity single photon source and ultrafast nanocavity array laser with low threshold. I will describe these devices, their efficient design and fabrication methods we developed, as well as our recent success in combing them into small photonic and quantum networks on a chip.

May 1-5, 2006
4th International Conference on Semiconductor Quantum Dots: QD2006
Chamonix-Mont Blanc, France
Call for abstracts due December 15, 2005
http://www-lsp.ujf-grenoble.fr/qd2006/

May 2, 2006
Special NSEC Research Exchange Seminar: Dr. Jan Palmblad, Professor of Medicine at Karolinska Institutet, Sweden will speak on: The Blood Vessel Endothelium- the Perfect Gate-Keeper?
1:00 p.m. Harvard University, Pierce Hall room 209

May 7-11, 2006
2006 NSTI Nanotechnology Conference and Trade Show
Hynes Convention Center, Boston, MA
Call for abstracts due November 18, 2005
http://www.nsti.org/Nanotech2006

May 8-9, 2006
NSTI Nanotech Job Fair
Hynes convention Center, Second Floor Exposition Hall, Boston, MA
The NSTI Nanotech Job Fair is the first of its kind. It offers a venue and event designed to simplify the hiring process for recruiters in small tech. The combined conferences are
expected to attract 3,000 professionals from around the world.
http://www.nanojobs.org

May 10, 2006
Special NSEC Seminar. Greg Boebinger, Director of The National High Magnetic Field Laboratory will speak on: The Metallic State of the Dilute Two-Dimensional Hole Gas in the Strongly Correlated Regime: Failure of Fermi Liquid Theory and Strong Enhancement of Hole-Phonon Coupling.
12:00 noon. Harvard University, Maxwell Dworkin 119
Much interest has centered around the metallic behavior observed in two-dimensional systems because there has been a long-accepted theoretical understanding that non-interacting two-dimensional systems are all insulators. We study very low-density (T Fermi ~ 1K) two-dimensional holes in narrow (10nm) GaAs quantum wells to access very high values of Rs ~ 30, the ratio of potential energy to kinetic energy. Many groups have suggested that Coulomb interaction corrections of a Fermi liquid could account for the observed increase in conductivity at low temperatures. However, these Fermi Liquid corrections imply clear predictions for behavior of the Hall coefficient, which are not borne out by our simultaneous measurements of longitudinal and Hall resistivity on the same samples. This strongly evidences Fermi Liquid corrections fail both qualitatively and quantitatively as an explanation for the metallic behavior. To best probe the role that interactions play in the metallic state, we find evidence from carrier heating experiments that the metallic state features an almost 20 time enhancement in the short range deformation potential (acoustic phonon) coupling between holes and phonons, whereas long range piezoelectric (optical phonon) coupling remains unchanged.

May 15-18, 2006
INC2 2006, International Nanotechnology Conference on Communication and Cooperation
Hyatt Crystal Hotel, Arlington, VA
http://inc2.inc-conf.net/

May 18, 2006
NanoTechnology & Business Forum
4:00-6:00 p.m. Greenberg & Traurig, One International Place, Boston, MA
Speakers: Dr. Alan Lund, Co-Founder, President and CTO, Xtalic. Topic: Production of Metals and Coatings with Tailored Nanostructures
Mark Lester, Managing Director and CEO, Forge Partners, LLC. Topic: Commercialization of Innovative Depostion Technologies-An Alternative Approach
MayNanoForum06.pdf

May 31-June 3, 2006
NNIN/C Conference
Topic: Synergy Between Experiment and Computation in Nanoscale Sceince.
Harvard University, Cambridge, MA
The NNIN website with information is available. Registration is currently underway, for more information: http://cns.fas.harvard.edu/nanobynumbers

June 5-24, 2006
Les Houches Summer School on Quantum Magnetism
Organised by the Pacific Institute of Theoretical Physics, registration through April 10, 2006
Topics will include microscopic theories of magnetism and new quantum materials, exotic order in magnetic systems (ranging from spin chains to ferromagnetic Hall systems), disordered quantum magnets and quantum critical phenomena (including quantum glass systems), spin systems in reduced dimensions and on the nano- or mesoscopic scale, and large-scale quantum phenomena in spin systems and related systems like superconductors and spin superfluids (thus we also address quantum computation and decoherence).
http://pitp.physics.ubc.ca/upcoming/leshouches/

June 12-14, 2006
ISPAC 2006
The 19th International Symposium on Polymer Analysis and Characterization (ISPAC-2006), Oak Ridge, Tennessee, DoubleTree Hotel
For more information visit: http://www.chem.cmu.edu/ispac/

June 14-16, 2006
Center for Nanophase Materials Sciences 2006 Users Meeting
The Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National Laboratory will hold its 2006 User Meeting on June 14-16, 2006, Wednesday Noon through Friday Noon, at the Pollard Technology Conference Center in Oak Ridge, Tennessee. The CNMS began operation on October 1, 2005 as the first of five new DOE-sponsored Nanoscale Science Research Centers. With the opening of its new building, the CNMS offers users access to research facilities and staff expertise in all seven of its Scientific Themes.
To register, please visit https://www.ornl.gov/cnms/2006/

June 15, 2006
Special NSEC Seminar: Professor Evgenii Narimanov, Princeton University
Topic: Optical Hyperspace: Negative Refractive Index and Sub-wavelength
Imaging in Strongly Anisotropic Media

10:00 am, Harvard University, Pierce Hall room 209
We develop a new approach to negative index materials based on strong anisotropy of the dielectric response. In contrast to conventional negative refraction systems, our method does not rely on magnetic resonance and does not require periodic patterning - leading
to lower losses and high tolerance to fabrication defects. We demonstrate that such non-magnetic negative-index materials can be effectively used for subwavelength imaging, and propose specific realizations - from THz to optical range.

June 23, 2006
MIT Center for Cancer Research 5th Annual Symposium: "Genomes, Chromosomes, and Cancer" Registration required.
9:00 a.m.-5:00 p.m. Kresge Auditorium at MIT
http://web.mit.edu/ccr/symposium.html

June 27-28, 2006
4th New England International Nanomanufacturing Workshop: Breaking the Barriers to Nanomanufacturing to Enable the Commercialization of Nanotechnology
Northeastern Univeristy, Boston, MA
http://www.nano.neu.edu/nanoworkshop2006/index.html

July 2-7, 2006
ICSM 2006 International Conference on Science and Technology os Synthetic Metals
Trinity College, Dublin
http://www.cpregistrations.com/icsm2006/

July 24-28, 2006
28th International Conference on the Physics of Semiconductors
Vienna, Austria
http://icps2006.at/

July 25, 2006
REU Seminar: The Good, The Bad, and The Ugly : Unintended Consequesnces of Research by Prof. Howard Stone.
4:00 pm, Maxwell Dworkin G115, Harvard University

July 26, 2006
REU Seminar: Presentation Skills Workshop with staff from The Museum of Science, Boston
9:00 am-4:00 pm, Maxwell Dworkin G115, Harvard University

July 28, 2006
REU Workshop: Presentation Skills Workshop with staff from The Museum of Science, Boston
10:00 am-4:00 pm at The Museum of Science, Boston

July 31, 2006
REU Program: Luncheon with Gradute Students: hosted by Prof. Cynthis Friend.
12:00 noon, Maxwell Dworkin 119, Harvard University

August 2, 2006
REU Seminar: by Prof. David Weitz, Director of MRSEC
5:30 pm, Maxwell Dwrokin G115, Harvard University

July 30-August 4, 2006
ICN+T 2006 International Conference on Nanoscience and Technology
The Conference Centre, Basel, Switzerland
http://www.icnt2006.ch

July 30-August 4, 2006
ICSNN-06, International Conference on Superlattices, Nano-Structures and Nano-Devices
Istanbul Convention and Exhibit Center
http://www.essex.ac.uk/ese/icsnn2006/

July 31-August 3, 2006
12th International Conference on High Pressure in Semiconductor Physics
Barcelona, Spain
http://www.uv.es/hpsp12/

August 6-9, 2006
Nanoconcepts in Higher Education. 2nd Annual Faculty Workshop for Learning and Teaching in Nanoscale Science and Engineering. Application deadline June 1, 2006.
California Polytechnic State University, San luis Obispo, CA
For more information: http://www.nclt.us/

August 7-8, 2006
REU Student Symposium

September 5, 2006
Special NSEC Seminar: Professor Smavel Gevorgyan, Yerevan University, Armenia
Topic: Planar Tunnel-Diode Oscillator Magnetometers for the Study of High-Tc Superconducting Films
12:00 noon, Harvard University, Pierce Hall room 209
Planar coil-based tunnel diode oscillator magnetometers for high-resolution micron scale measurements of high-Tc films will be presented. The characteristics of these devices allow for simultaneous measurement of inductance changes at the pH level, magnetic penetration depth, RF magnetic field, and the detection of nW power absorption changes inside high-Tc films near the superconducting phase transition. In particular, we will present experimental results with these devices on YBaCuO thin film disk and ring geometries, reporting observed peculiarities in vortex dynamics, paramagnetic-like phenomena preceding the Meissner effect, and other experimental results. Extensions of the applications of coil-based tunnel diode oscillator magnetometers will also be discussed.

September 19-20, 2006
Global School for Advanced Studies (GSAS) will hold its first session on Advanced Solar Cell Research. GSAS Scholars (advanced graduate students and postdocs from relevant science and engineering disciplines) will form global, multidisciplinary teams to plan new solar cell research projects. An intensive 10-day workshop in Taiwan will offer them advanced lectures and mentoring by distinguished international experts. The best research project will be selected and the winning team will be hosted for a one-year team research fellowship at a leading research institute in Taiwan. Funding for this initiative has been provided by the National Science Council of Taiwan and the US National Science Foundation.
Advanced graduate students and postdocs may apply now at http://www.gsasprogram.org/solarcells.html.

September 25, 2006
Abstracts due for Conference: Quantum Information and Computation V (DS25)
http://spie.org/Conferences/Calls/07/dss/conferences/index.cfm?fuseaction=DS25

September 26, 2006
Special NSEC Seminar: Donald Eigler, IBM Almeden
Spin Excitation Spectroscopy with the STM
1:00 pm, 60 Oxford Street, room 330, Harvard University
We have extended the spectroscopic abilities of the scanning tunneling microscope (STM) to include the measurement of spin-excitation spectra. Utilizing spin-excitation spectroscopy as our primary tool, we are now capable of extracting exchange coupling energies, anisotropy energies, and information on the spin configuration of nanometer-scale structures. What we learn from these experiments will hopefully allow us to engineer the
"energy landscape" of a system of spins in order to achieve nanometer-scale binary logic circuits that operate using only the spin degree of freedom.
Work done in collaboration with Cyrus Hirjibehedin, Andreas Heinrich,
Christopher Lutz, Jay Gupta, and Bruce Melior.

October 5, 2006
NCLT Seminar Series, Nanostructures and Nanointerfaces in Electronics, Energy, and Biotechnology: Nanomaterials: from Art to Applications. Howard E. Katz, Jonah Erlebacher, and Peter Searson, from Johns Hopkins University
On the Web, 13:30 pm (CST)
http://www.nclt.us/conferencing_connections.htm

October 11-13, 2006
Nanoelectronics Days 2006. The aim of the Nanoelectronics Days is to give an overview of different topics in nanoelectronics and to establish a discussion forum for new approaches in this field. Additionally, this conference is stimulating the scientific exchange on an European and international level.
RWTH, Aachen
http://www.cni-juelich.de/ND2006

October 13, 2006
Special NSEC Seminar: Urbasi Sinha, Cavendish Laboratory, Cambridge, UK
Dielectric Characterization Using Resonances in High Tc Josephson Junction Circuits
12:00 noon, Maxwell Dworkin 119, 33 Oxford Street, Harvard University

October 12-15, 2006
National Science Foundation Materials Chemistry & Nanoscience Workshop
St. Louise MO
http://www.natsci.colostate.edu/conferences/NSFwkshp/

October 16-17, 2006
2006 LUX Executive Summit: Commercializing Nanotechnology
The Charles Hotel, Cambridge , MA
http://www.luxexecutivesummit.com

October 19, 2006
HGWISE Women, Science, and Society Seminar Series: Analyzing the Leaky Pipeline: Why Are Women Scientists Under-represented in Senior Positions?
Dr. Phoebe Leboy Professor of Biochemistry, School of Dental Medicine, University of Pennsylvania
6:00 pm, Harvard University, Science Center 469

October 23, 2006
Special Seminar: Henry I. Smith, Director MIT Nanostructures Laboratory : The Synergy of Nanofabrication, Technology Development, and Applications
11:00 am, Maxwell Dworkin G115, 33 Oxford Street, Harvard Uniersity

October 25-26, 2006
Nano and Microtechnologies in the Food and Healthfood Industries Conference
NH Grand Hotel Krasnopolsky, Amsterdam
http://www.nano.org.uk/conferences/food_health/

October 27, 2006
Special NSEC Seminar: Carol Livermore, Department of Mechanical Engineering, MIT:
MEMS-Based Lasers
4:00. Pierce Hall, room 209, 29 Oxford Street, Harvard University

November 3, 2006
Radcliffe Institute Symposium: Frontiers in Tissue Engineering
8:00 am-5:00 pm, Harvard University, Maxwell Dworkin G115, 33 Oxford Street, Cambridge, MA
http://www.radcliffe.edu/events/conferences/2006_tissue.php

November 3-4, 2006
Nanotechnolgy Symposium: Nanotechnology in Medicine and Drug Disovery
Tang Center, Wong Auditorium, MIT, Cambridge, MA
http://www.mit-nibr-nanotech.org/nanotechnology/index.html

November 7, 2006
Nanotech 2006: A Symposium for Educators, Museum of Science, Boston
This symposium for middle, high school and community college science and engineering teachers offers presentations on basic concepts of nanoscale science and engineering, as well as workshops on classroom activities for integrating nanoscale concepts into science, technology, and social studies frameworks.
http://www.mos.org/doc/1812?id=757

November 9, 2006
Nanotechnology & Business Forum
4:00-6:00 Greenberg Traurig, One International Place, 20th Floor, Boston, MA
The focus of this next forum will be on Bio-Nanotechnology, including cell based biochip technology
For more information contact: Jessica Venezia at veneziaj@gtlaw.com

November 15, 2006
IIC Seminar Series, Speaker Felice Frankel will speak on: Your Visual Representations of Science: Are They Lost in Translation?
4:00 pm, Haraved University, 60 Oxford Street, room 330
Abstract
In recent years, the science community is finally paying more attention to the way it visually expresses its data and scientific concepts. Many publications now are showing collections of examples of graphics, however, most are neither written by people who make those representations, nor do they provide thoughtful standards specifically relevant to the research community. Such exercises can be enormously helpful to begin to think about general approaches to graphical presentation of data, but vast specific challenges in the visual expression of science remain unsolved. This conversation with the audience will not present a manifesto on the "right" way to represent science. It will simply raise questions and encourage further discussion. I'll show examples from my own efforts, including the not so successful ones, and other figures and images already published in the scientific literature. The talk will remind us that representations are translations of various forms of data into visual expressions, and that we have to make decisions during the process-preferably the right ones.

November 16, 2006
HGWISE Women, Science, and Society Seminar Series: Issues of Gender in Engineering
Dr. Lorna Gibson, Matoula S. Salapatas Professor of Materials Science and Engineering
Professor of Mechanical Engineering, Massachusetts Institute of Technology
6:00 pm, Harvard University, HIM Room of HMS Conference Center November 28, 2006
Fred Friendly Seminar, Museum of Science, Boston
Doors open at 6:30 p.m. Join us to be in the audience to observe the videotaping of a Fred Friendly Seminar for PBS broadcast. John Hockenberry will moderate the Seminar, a Socratic dialogue exploring many of the same issues as those before the forum. Among the panel members are: Harvard Professor George M. Whitesides; George Nacarra, Federal Director of Security at Logan Airport; Carie Lemack, cofounder of the Families of September 11; Anita Allen-Castillitto, the Henry R. Silverman Professor of Law at University of Pennsylvania Law School; and Alex Jones, Director of the Shorenstein Center on the Press, Politics, and Public Policy at Harvard University’s Kennedy School of Government. (You may attend only the November 28 videotaping without attending the other forums.)
http://www.mos.org/doc/1996

November 29, 2006
NSEC Seminar: Hongqi Xu will speak on Room-temperature Functional Nanoelectronic Devices and Circuits with Branched Nanoscale Ballistic Junctions
11:00 am, Harvard Univerisity, Pierce Hall room 209
Present digital logic gates are primarily built from field effect transistors (FETs) such as complementary metal oxide semiconductors with the gate length in the deep sub-µm regime. As device feature sizes approach the nanometer regime, fundamental physical constraints and increasingly prohibitive economic costs will make further miniaturization in electronic circuits difficult, and this has motivated efforts worldwide to search for new strategies to meet expected computing demands of the future. In the strategy for device fabrication, bottom-up approaches to electronic devices with well-defined nanoscale building blocks have been demonstrated. An alternative strategy is to develop new device concepts by making a revolutionary departure from the FET-based paradigm. The approach must exploit the emerging inherent properties of nanostructures. Here I will review a paradigm based on multi-terminal ballistic junctions (MBJs), in which the ballistic nature of electron transport, which has emerged in the nanostructures, is exploited.
A MBJ is a nanostructure-compatible device formed from three or more ballistically coupled nonlinear conductors, such as quantum point contacts realizable by standard nanofabrication methods. A key requirement in the realization of this device is that carrier transport in the device is ballistic or quasi-ballistic. Various MBJ structures have been fabricated on high-quality semiconductor heterostructures and novel properties of MBJs have been found. I will present physical explanation for these novel properties. As for applications, I will demonstrate that MBJs can be used as diodes and triodes, as well as a building block for analog and logic circuits. These devices and circuits function at room temperature, and the layout of the devices and circuits features fabrication by a single-step lithography process that is suitable for mass production with low-cost approaches such as nanoimprint lithography. Furthermore, the demonstrated device principles are expected to apply equally well to multi-terminal junctions made with bottom-up approaches. As an example, recent work on nanoelectronic devices made from branched nanotubes and grown semiconductor nanowires will be reviewed.

December 1, 2006
HGWISE Women, Science, and Society Seminar Series: Lupus, Snurps, and Women in Science" Dr. Joan Steitz, Sterling Professor of Molecular Biophysics and Biochemistry, Yale University
6:00 pm, Harvard University, HIM Room of HMS Conference Center

December 5, 2006
Seminar: Thomas W. Ebbesen will speak on: Surface Plasmon Photonics
12:00 noon, Harvard University Pierce Hall room 209
Materials structured on the nanometer scale can lead to improved and sometimes surprising properties.  Metals are no exception to this rule. Metal particles for instance display colours which vary with their size. The colour results from the coupling of light with the free electrons of the metal particle to form surface plasmons.  On a broader level, with modern nanofabrication techniques it is possible to tailor the structure of metals and thereby to control the properties of surface plasmons opening many new possibilities [1].

The potential of surface plasmon photonics will be illustrated in some detail by our own work on the extraordinary optical properties acquired by metal films if they are simply perforated with one or more apertures and periodic corrugations [2-8]. The different possibilities and challenges to create complete plasmon based photonic circuits will also be discussed together with the practical implications from chemistry to opto-electronics [1,9,10].


  

  Last Modified January 20, 2010 by the NSEC Office.