During the 1940s, Iowa State University and the Ames Laboratory conducted scientific research in support of the nationâ€™s historic Manhattan Project, contributing to the effort to purify uranium for the first self-sustaining chain reaction at the University of Chicago. This effort, as well as scientific research at the Ames Laboratory in the 1950s, resulted in several sites around Ames becoming contaminated by radioactive and hazardous wastes.
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Purdue University issued a news release detailing Purdue's involvement in the Critical Materials Institute, one of the U.S. Department of Energy's Energy Innovation Hubs, located and led by the DOE's Ames Laboratory.
A pair of Ames Lab and Iowa State researchers have developed 3-D teleconferencing technology that's live, real-time and streaming at 30 frames per second. They say it took a lot of late nights to solve the technical problems associated with image capture, transmission and display. They also say the technology could be ready for smart phones in a few years.
Modern material design increasingly relies on controlling small scale morphologies. Multi-block polymers are well suited to this as they can provide highly tunable structures with applications ranging from structural materials to specialized uses such as fuel cells and separation membranes. Several unique microstructures can be formed from even a two component, diblock, polymer. Systems with more components present a much richer array of morphologies, allowing even more control over properties.
The goal of the SULI project will be to model and understand the physics underlying organic semiconductor light emitting devices (OLEDs) that are being fabricated within the Photonic Systems FWP. We will develop a novel Monte-Carlo approach to model the transport and recombination of holes and electrons in these devices, that results in the emission of light. Experimentally determined motilities of electrons and holes will be utilized.
There are two projects, both of them computational. The student will learn the basics of Molecular Dynamics simulations and then will be able perform simulations of polymers interacting with nanoparticles that are functionalized with DNA(project2) or investigate how proteins interact with other proteins as well with phospholipids (project 2). If the student works efficiently, it may result in a publication on a refereed journal. Besides, he/she will be exposed to the materials and methods needed to understand the nano-world.
Polymer gratings can efficiently couple a light into waveguides. Their coupling efficiencies strongly depends on their dimensions and refractive indices. The 1st order diffraction is used for coupling light into waveguides when the incidence angle of incoming light is matched for waveguiding. However, the guided intensity is weak compared to the incoming light intensity and needs to be improved.