Program Highlights

January 25, 2007

A New MIT-Wide Vehicle for MRSEC Knowledge Outreach

The MIT MRSEC, in collaboration with the Materials Processing Center (MPC) and the Department of Materials Science and Engineering (DMSE), has launched a new MIT-wide materials website...The MIT MRSEC, in collaboration with the Materials Processing Center (MPC) and the Department of Materials Science and Engineering (DMSE), has launched a new MIT-wide materials website designed to help interested parties navigate the diverse and sometimes confusing labyrinth of departments, labs and centers (and associated user facilities) on campus involved in materials research.
January 16, 2007

Quantum Dot “Sandwiches" Emit White Light

Members of IRG-III of the MIT MRSEC have demonstrated a light emitting device application of quantum dots. They show that white light can be generated in a layered device that combines organic semiconductor layers with a single monolayer of quantum dots.

January 16, 2007

Nanocoatings Harvest Water from Fog

In the Namib Desert in Namibia, Africa, a tiny beetle is able to convert microscopic droplets of water present in a morning fog into larger sized droplets that are directed into the beetle's mouth to quench a desert thirst. Inspired by the remarkable accomplishment of the tiny Stenocara beetle, R. Cohen and M. Rubner of the MIT MRSEC have created a synthetic mimic of the beetle's unique surface pattern of water-attracting (hydrophilic) and super water-repelling (superhydrophobic) regions.

 

January 10, 2007

Probing Spin Density Waves

ProbingSpinDensity.jpg Exchange bias as a probe of the incommensurate spin density wave in epitaxial Fe/Cr (001). Magnetism in metallic films and interfaces has been intensively studied since the discovery of Giant MagnetoResistance (GMR) in the late 1980s.

December 15, 2006

A New Organic-Inorganic Heterojunction: GaN-Pentacene

TFK2.jpg Organic semiconductor materials have shown promise in recent years for use in low-cost electronics applications such as photovoltaics, chemical sensors, and flat-panel displays. In particular, pentacene thin films have been shown to exhibit high a large field-effect mobility on the order of 1 cm2/Vs, which is sufficient for organic thin-film transistors (TFTs) for displays. However, the performance of organic electronic devices can often be limited by charge injection from the contact materials.
December 7, 2006

Light Used as a Magnetic Hammer

Light Used as a Magnetic Hammer

Scientists in the University of Nebraska MRSEC are using very short light pulses from a femtosecond laser to perturb magnetic materials and to probe their behavior at times after the perturbation. The light pulses are only about 100 millionth-billionths of a second long. By adjusting the delay time between the pump and probe pulses, we get a detailed picture of how the magnetization precesses with time. These investigations provide information that is useful in such applications as magnetic information storage on hard disk drives.