-
Launch of a Nanoscale Informal Science Education Network
21 Feb 2006 | | Contributor(s):: larry bell
The Museum of Science, Boston, in partnership with the Science Museum of Minnesota and the Exploratorium in San Francisco, has been selected by the National Science Foundation (NSF) to form and lead a national Nanoscale Informal Science Education Network (NISE Network) comprised of multiple...
-
Levitated Spinning Graphene
12 Nov 2010 | | Contributor(s):: Bruce E. Kane
I will describe a method for levitating micron-sized few layer graphene flakes in a quadrupole ion trap. Starting from a liquid suspension containing graphene, charged flakes are injected into the trap using the electrospray ionization technique and are probed optically.
-
Limits of Thermal Processes and their Implications on Efficient Energy Utilization
19 Oct 2010 | | Contributor(s):: Arunava Majumdar
About 90 percent of the world’s energy use involves thermal processes – thermal engines to generate mechanical power; heating and cooling in buildings; heating involved in manufacturing of steel, cement, glass, petrochemicals etc. To identify opportunities for improving current...
-
Linear and Nonlinear Optical Devices Based on Slow Light Propagation: Figures of Merit
19 May 2008 | | Contributor(s):: Jacob B. Khurgin
Performance of optical delay lines and nonlinear devices based on slow wave propagation in photonic crystal waveguides in the presence of higher order dispersion is analyzed and compared with other slow light schemes, such as coupled resonators, media with electromagnetically-induced...
-
Linking Bio and Nano... an Extended Discussion 2004-2005
12 Dec 2004 |
Connecting artificial nanotechnology to biological systems is a topic of great interest these days, but the interfaces between electronic, mechanical, and biological systems have always been less than intimate.
-
Liquid Transportation Fuels from Coal and Biomass
13 Nov 2009 | | Contributor(s):: Michael R. Ladisch
Report on the National Academies’ America’s Energy Future Study 2009.
-
Logic Devices and Circuits on Carbon Nanotubes
05 Apr 2006 | | Contributor(s):: Joerg Appenzeller
Over the last years carbon nanotubes (CNs) have attracted an increasing interest as building blocks for nano-electronics applications. Due to their unique properties enabling e.g. ballistic transport at room-temperature over several hundred nanometers, high performance CN field-effect transistors...
-
Macromolecular Simulation: A Computational Perspective
16 Feb 2004 | | Contributor(s):: Robert D. Skeel
The study of cold atomic gases is exploding, driven largely by the rapid experimental developments. This field has become highly interdisciplinary, connecting a great variety of interesting problems: weakly and strongly correlated quantum condensed matters, nuclear matters, and physics of low...
-
Magnesium Phyllo (Organo) Silicate: A Clay to Play with in Materials Science
11 Aug 2010 | | Contributor(s):: M. Eswaramoorthy
The synthesis and applications of amino functionalized clay will be discussed in this talk. The tailor made clay containing amino pendants is easily dispersible in water. This property has been effectively utilized to make water soluble clay-metal nanoparticles composites, clay-protein and...
-
Marital Relationships & Coping with Cancer
11 May 2007 | | Contributor(s):: Cleveland G. Shields
Breast cancer is one of the most prevalent forms of cancer in women. We conducted a cross sectional study of 77 women and their spouses coping with breast cancer. Both couples completed almost identical surveys. We hypothesized that couples who reported higher levels of criticism and avoidance...
-
Mark Ratner Interview on Nanotechnology
23 Mar 2006 | | Contributor(s):: Mark Ratner, Krishna Madhavan
Nanotechnology interview with Krishna Madhavan.
-
Materials Science on the Atomic Scale with the 3-D Atom Probe
08 Nov 2006 | | Contributor(s):: George D. W. Smith
Some of the key goals of materials science and technology are to be able to design a material from first principles, to predict its behaviour, and also to optimise the processing route for its manufacture. In recent years, these goals have come closer to realisation, thanks in part to the...
-
McCoy Lecture: Nanodevices and Maxwell's Demon
04 Oct 2006 | | Contributor(s):: Supriyo Datta
This is a video taped live lecture covering roughly the same material as lecture 1 of "Concepts of Quantum Transport". Video only.
-
MCW07 Conductance Switching in Fluorene/TiO2 Molecular Heterojunctions
13 Sep 2007 | | Contributor(s):: Richard L.McCreery
Molecular junctions consisting of a monolayer of fluorene and 10 nm of TiO2 between conducting contacts exhibit a memory effect upon positive polarization of the of the TiO2 for a few milliseconds. The junction conductance increases for a period of several minutes, but can be “erased” by a...
-
MCW07 Electronic Level Alignment at Metal-Molecule Contacts with a GW Approach
05 Sep 2007 | | Contributor(s):: Jeffrey B. Neaton
Most recent theoretical studies of electron transport in single-molecule junctions rely on a Landauer approach, simplified to treat electron-electron interactions at a mean-field level within density functional theory (DFT). While this framework has proven relatively accurate for certain systems,...
-
MCW07 Exploring Trends in Conductance for Well-Defined Single Molecule Circuits
04 Apr 2009 | | Contributor(s):: Mark S Hybertsen
In our recent research, we have been able to measure and characterize the impact of intrinsic molecular properties on the conductance of single molecule circuits formed with amine-gold linkages. In this talk, I will review the experiments and the physical picture of the junction based on the...
-
MCW07 Impact of Porphyrin Functional Groups on InAs Gas Sensors
05 Nov 2007 | | Contributor(s):: Michael Garcia
Porphyrin molecules are often used for sensor engineering to improve sensitivity and selectivity to specific analytes. It is important to understand how the porphyrin HOMO-LUMO levels deplete surface states during functionalization of solid state sensors. Additionally, the effect of...
-
MCW07 Modeling Charging-based Switching in Molecular Transport Junctions
23 Aug 2007 | | Contributor(s):: Sina Yeganeh, Misha Galperin, Mark Ratner
We will discuss several proposed explanations for the switching and negative differential resistance behavior seen in some molecular junctions. It is shown that a proposed polaron model is successful in predicting both hysteresis and NDR behavior, and the model is elaborated with image charge...
-
MCW07 Modeling Molecule-Assisted Transport in Nanotransistors
06 Nov 2007 | | Contributor(s):: Kamil Walczak
Molecular electronics faces many problems in practical device implementation, due to difficulties with fabrication and gate-ability. In these devices, molecules act as the main conducting channel. One could imagine alternate device structures where molecules act as quantum dots rather than...
-
MCW07 Molecular Electronics and the Bottom-up View of Electronic Conduction
12 Sep 2007 | | Contributor(s):: Supriyo Datta
Molecular electronics is commonly associated with the bottom-up approach to nanofabrication. My objective in this talk is to point out how it also leads to a bottom-up view of electronic conduction completely different from the standard top-down approach that starts from large conductors and...