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Program Highlights

Hall Effect and Near-Metallic Transport in Rubrene

Research

This work represents the first unambiguous confirmation that very large charge densities can be achieved on the surface of organic crystals by using electrolyte gates. 

(2015)

Persistent optically-induced magnetism in SrTiO3-d

Research

In collaboration with the group of Scott Crooker at Los Alamos National Lab and Greg Haugstad of the CSE Characterization Facility, graduate student Palak Ambwani and faculty member Chris Leighton have recently reported a remarkable finding in the area of complex oxides.

(2014)

Cavitation in Block Copolymer Modified Epoxy Revealed by In Situ Small-Angle X-Ray Scattering

Research

Addition of rubber particles to epoxy thermosets has been successful for toughening these brittle materials.

(2014)

Intramolecular Exciton Transport in Conjugated Polymers

Research

Using a series of acceptor-polymer-acceptor triads, IRG-2 investigators have measured intramolecular exciton diffusion in poly-3(hexylthiophene) (P3HT) for the first time.

(2014)

Magnetic Charge Crystallization in Artificial Spin Ice

Research

“Artificial spin ice” is a term used for arrays of nanoscale magnetic islands on lattices that geometrically frustrate inter-island interactions. 

(2014)

Ligand-free Colloids and Surface Doping of Silicon Nanocrystals

Research

Inks of inorganic nanocrystals hold great promise for printed electronics but the widely used organic surfactants (ligands) needed to stabilize these inks degrade the electrical quality of the printed films.

(2014)

Kondo Physics at Ferromagnet/Normal Metal Interfaces

Research

The idealized picture of an interface between two elemental materials is simply an abrupt transition between planes containing two different types of atoms.

(2014)

First Observation of Hall Effect in Polymer Transistors

Research

Printed transistors employing both the bench-mark polymer semiconductor poly(3-hexyl-thiophene) and ultra-high capacitance ion gel gate insulators exhibit unusually large hole mobilities near 1 cm2/Vs at high charge densities (0.2 holes/ring).

(2013)

First All-Gas Phase Manufacture of a Nanocrystal Based Electronic Device

Research

Semiconductor nanocrystals hold great potential for the low-cost manufacture of electronic devices. 

(2013)

Low Resistivity Magnetic Nano-Sensors

Research

As electronic devices shrink deep into the nano-scale, low-resistivities become essential.

(2013)

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