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Program Highlights for year 2008

Dynamic Surface-Emitting Fiber Lasers

Members of of IRG-I have recently introduced a new concept in fiber lasers. Until now, emission from fiber lasers originated solely from the fiber ends in the axial direction with a spot size dictated by the core radius.

Dual Function Drug-Release Coating Mimics Hummingbird Wings

Functionally active thin film coatings find many important uses in the biomedical field as sensors and drug delivery systems. Members of IRG-II have created a new multilayer coating that can serve both functions.

GEMSEC Partnership with a Community College for Curriculum Development

To create a nationally replicable model of a sustainable and continuously up-gradable hands-on undergraduate teaching laboratory of scanning probe methods, GEMSEC is working with researchers from the UW's Center for Nanotechnology, educators from North Seattle Community College, representatives from a scanning probe microscopy manufacturer, and a nanotechnology SPM distributor.

Multi-faceted Education and Partnerships at GEMSEC

With a particular focus on engaging and including Native Americans in its entire range of programs, GEMSEC is weaving a fabric of education offerings to seamlessly support and complement its research thrusts.

Self-Assembly of Soft Materials: A Multiscale Computational Approach

Surfactant adsorption at solid-liquid interfaces is important in many industrial processes, including corrosion inhibition, dispersion stabilization, and lubrication. Furthermore, surfactant adsorption may provide novel and exciting means to guide soft materials to self-assemble into a myriad of tailored shapes.

Direct-Transfer Patterning on Three- Dimensional Surfaces

While many approaches have been developed over the years to transfer patterns onto flat surfaces, faithfully transferring patterns onto curves substrates remains a major obstacle to the development of large-area electronics. Recently, PCCM researchers have successfully patterned domed polyester substrates with metal stripes (gold, silver, etc.).

Doping Affects Electronic Transport Through Molecular Junctions

Electronic transport through a junction formed between silicon (Si), a monolayer of alkyl chains (C14H29) self-assembled on Si, and a metal (M) is dominated by thermionic emission above the semiconductor barrier and tunneling through the insulating molecular layer [1].

Breaking the Mold to Produce Submicron Polymeric Gratings with Large Areas

PCCM researchers have discovered a new method for making gratings: by prying apart two rigid plates that sandwich a thin, glassy polymeric film. The process fractures the film into complementary sets of ridges on each plate, with the ridges on one corresponding to the valleys on the other.

Si Nanowire Grids Polarize Down to 193 nm

The continual decrease in microelectronic device feature size, captured in the famous "Moore's Law", has come in part from a decrease in the wavelength of light used in the photolithographic steps used to pattern these features. Today, the most advanced production photolithography uses 193 nm ultraviolet (UV) light from an ArF excimer laser.

An Electronic Density-Wave Turns into a Superconductor

At low temperatures, the electrons in most layered transition-metal chalcogenides undergo a phase transition into an interesting, highly-ordered state called the charge-density-wave (CDW), in which the electron density spontaneously acquires a weak, periodic spatial modulation. In a small subset of materials, the CDW state is destroyed and replaced by the superconducting state.

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