Highlights
Apr 18, 2013
Massachusetts Institute of Technology
Harnessing In-Fiber Fluid Instabilities To Create Multimaterial Particles From Fibers
Ayman Abouraddy (UCF), Yoel Fink (MIT)
From drug delivery to catalysis
to optoelectronics, the need for efficient fabrication pathways
for particles
over a
wide range of sizes, from a variety of materials, and in many
different structures
is
critical to functionality. Researchers in IRG-III have exploited the inherent scalability
of fiber production and an in-fiber Plateau–Rayleigh capillary
Apr 18, 2013
Massachusetts Institute of Technology
New Technique Provides Better Understanding of Problems with Lithium-Air Rechargeable Batteries
Yang Shao-Horn (MIT)
The lack
of fundamental understanding of the role of oxygen in non-water based electrolytes
significantly hinders the development of rechargeable lithium-air batteries. This IRG has developed a new X-ray
photoelectron spectroscopy (XPS) technique that makes it possible to
study the lithium/oxygen chemistry occurring during battery operation as a
function of applied voltage and controlled oxygen pressure.
Apr 5, 2013
Colorado School of Mines
The Case for Small Quantum Dots
H. Li, Z. Wu, and M. T. Lusk (Colorado School of Mines) Renewable Energy MRSEC, NSF DMR-0820518
Why are 1-2 nm silicon quantum dots ideal as solar materials?
Apr 3, 2013
Colorado School of Mines
Education and Outreach in the Renewable Energy MRSEC
B. Moskal, J. Strong, T. Ohno, C. A. Stone (Colorado School of Mines), Renewable Energy REMRSEC, NSF DMR-0820518
Teacher Workshop: Eighteen elementary school teachers participated in summer workshop. Student impact of approximately 200 students.
Summer Camp: Instruction for a summer camp for forty-two dyslexic students. Intervention provided opportunity to experience success in science.
Apr 3, 2013
Colorado School of Mines
Electrochromic Thin Film Transistors
C. Wolden, C-p. Li (Colorado School of Mines) R. Tennet, A. Dillon (National Renewable Energy Laboratory), Renewable Energy MRSEC, NSF DMR-0820518
We
demonstrated an oxide-based TFT using electrochromic WO3 as the channel
Apr 3, 2013
University of Utah
Organic topological insulators in organometallic Lattices
Discovery: A class of 2D covalent organic framework made of triphenyl- metal compounds are found to be topological insulators exhibiting robust nontrivial topological edge states.
Approach: Predictive First-principles band structure and band topology calculations.
Mar 15, 2013
University of Chicago
Two views of how Information is transmitted through a material
Jelena Pesic, Joseph Zsolt Terdik, Xinliang Xu, Yi Tian, Alejandro Lopez, Stuart A. Rice, Aaron R. Dinner, and Norbert F. Scherer [University of Chicago]
In our system, a colloidal particle (upper left (a), red) is trapped by optical tweezers (upper left (b)) as a surrounding colloidal suspension flows past. Surprisingly, long range order develops in the particle density (lower left, dark bands are regions with over-representation of particles, sigma is the particle diameter). A novel analysis of particle motions using a technique from computer science reveals the otherwise hidden flow patterns in the fluid surrounding the probe (right).
Mar 15, 2013
University of Chicago
Self-Assembled Nano-Drums
Pongsakorn Kanjanaboos (University of Chicago), Xiao-Min Lin (Argonne), John E. Sader (University of Melbourne), Sara Rupich (University of Chicago), Heinrich M. Jaeger (University of Chicago), Jeffrey R. Guest (Argonne)
Using the expertise in nanoparticle synthesis and assembly built up in IRG 3, a MRSEC team comprised of members of the Jaeger and Talapin groups collaborated with Xiao-Min Lin and Jeffrey Guest at Argonne’s Center for Nanoscale Materials and John Sader from the University of Melbourne to develop the first completely self-assembled nano-mechanical resonator. It forms when a nanoparticle monolayer drapes itself over a hole several microns in diameter to produce a 10nm thin, freestanding membrane that vibrates in the MHz range (transmission electron microscope images shown in left inset).
Mar 15, 2013
University of Nebraska - Lincoln
Mechanical Writing of Polarization
Haidong Lu and Alexei Gruverman (Nebraska MRSEC)
Ferroelectrics comprise an important group of
materials, which are characterized by a permanent electric polarization. This
polarization can be switched which provides a possibility of using
ferroelectrics in data storage and memory devices. Typically, polarization is
switched by the application of the external electric field. Nebraska MRSEC researchers
have shown that polarization can be switched by purely mechanical means: simply
by pushing the tip of a scanning probe microscope against the ferroelectric
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