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Highlights

Highlights

Feb 20, 2012
Northwestern University

NSF-Nanoelectronics Research Initiative

Generating, Probing and Manipulating Excitons in Carbon-based Nanomaterials        Density gradient ultracentrifugation leads to isolation of monodisperse graphene flakes      
Feb 20, 2012
Northwestern University

Collaboration with Public Institutions: Art Conservation

The Art Institute of Chicago:Science of Art Conservation
Feb 20, 2012
Northwestern University

Sharing Science through the Arts

(Gunawan et al., Nano Letters 2011, 11, 5553-5557)
(Gunawan et al., Nano Letters 2011, 11, 5553-5557)
Jan 19, 2012
University of Minnesota - Twin Cities

Imaging 'Invisible' Dopant Atoms in Semiconductor Nanocrystals

Andre Mkhoyan,  David Norris
In semiconductor nanocrystals, the physical effects of deliberately included impurities, called dopants, may depend on the dopant position with the crystal. 
(a) Influence of temperature on the resistivity of P3HT (see structure in (c) at multiple levels of electrostatic doping. (b) shows a schematic of the transistor.
(a) Influence of temperature on the resistivity of P3HT (see structure in (c) at multiple levels of electrostatic doping. (b) shows a schematic of the transistor.
Jan 18, 2012
University of Minnesota - Twin Cities

Why Most Plastics Can't be Metals

 Chris Leighton, Dan Frisbie
Conductive polymers, i.e. plastics, that conduct electricity, are important in science and technology as they offer the potential for cheap, flexible electronic devices.
(Cheng et al., Nano Letters 2011, 11, 1952-1956)
(Cheng et al., Nano Letters 2011, 11, 1952-1956)
Jan 18, 2012
University of Minnesota - Twin Cities

High Efficiency Silicon Nanocrystal Light Emitting Devices

Russell Holmes, Uwe Kortshagen 
Hybrid light-emitting devices based on organic semiconductors and inorganic semiconductor nanocrystals are of great interest for applications in optical displays and solid-state light sources.
Jan 17, 2012
Cornell University

Patterned Graphene "Scrap" Grows into Continuous "Patchwork Quilt"

M.P. Levendorf, et al. inpreparation   
  New technique produces heterojunctions in single-atom-thick graphene
Jan 17, 2012
Cornell University

A Better Way to Store Information in Computer Memory

L. Liu et al., submitted to Nature Physics (2011).   
Oct 18, 2011
New York University

Self-Replication of DNA Nanotile Patterns

T. Wang, R. Sha, R. Dreyfus, M. E. Leunissen, C. Maass, D. J. Pine, P. M. Chaikin, and N. C. Seeman
Aug 31, 2011
University of Pennsylvania

Stressing the Most Important (Dirac) Points

Steve M. Young,1 Sugata Chowdhury,1 Eric J. Walter,2 Eugene J. Mele,3 Charles L. Kane,3 and Andrew M. Rappe1,* 1 The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania 2 Department of Physics, College of William and Mary 3 Department of Physics, University of Pennsylvania
Recent physics research shows how spin-orbit coupling can rearrange electronic bands in a solid to make a "topological insulator" a new quantum phase of matter that is guaranteed to have conductive surfaces even though its bulk is insulating. What happens if you take a topological insulator and compress or expand it? A team of researchers at the University of Pennsylvania has examined this question. They find that if you expand the material enough, you can manipulate the Dirac

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