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Program Highlights

Why Most Plastics Can't be Metals

Research

Conductive polymers, i.e. plastics, that conduct electricity, are important in science and technology as they offer the potential for cheap, flexible electronic devices.

(2012)

High Efficiency Silicon Nanocrystal Light Emitting Devices

Research

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.

(2012)

Printed, Flexible Carbon Nanotube Digital Circuits

Research

Graduate student Mingjing Ha working with Optomec, Inc. and Northwestern University collaborators (Mark Hersam) has demonstrated low voltage, fast carbon nanotube (CNT) circuits printed on flexible plastic substrates. The circuits are fabricated by aerosol jet printing from a liquid dielectric ink (ion gel) and a purified semiconducting CNT ink (Northwestern).

(2011)

ZnO Nanowires for DNA Electrophoresis

Research

Our team has developed a simple solution-based method to fabricate arrays of ZnO nanowires inside of a glass microchannel. 

(2011)

Discovery of a Frank-Kasper σ Phase in Sphere-Forming Block Copolymer Melts

Research

Ordering of spherical particles represents a fundamental topic in materials science and engineering ranging from the sub-nanometer scale packing of atoms in simple crystals to micron sized assemblies of colloids.

(2011)

Auger Recombination in Quantum Dot Materials

Research

Auger recombination is an important mechanism that can limit the performance of solar cells.

(2010)

Enhanced Exciton Diffusion using Phosphor Sensitization

Research

Graduate student Wade Luhman has demonstrated a route to enhance the short exciton diffusion length (LD) of organic semiconductors by combining fluorescent and phosphorescent materials into a single electron donating thin film.

(2010)

Probing the Spin Polarization of Sulfide-based Spintronic Materials

Research

Highly spin-polarized magnets have the potential to radically improve the performance of many spintronic devices.

(2010)

Mechanism of Molecular Exchange in Block Polymer Micelles

Research

Using small-angle neutron scattering, we investigated the mechanism of molecular exchange in spherical micelles formed by diblock copolymers in an organic solvent.

(2010)

Hybrid Silicon Nanocrystal-Polymer Solar Cells

Research

Mr. Chin-Yi Liu, a graduate student working in Professor Kortshagen’s group, demonstrated the first hybrid solar cell based on silicon nanocrystals and a conductive polymer, poly-3(hexylthiophene) (P3HT). 

(2009)

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