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The unexpected hardness of gallium nitride

31-Oct-2016

Gallium nitride (GaN) has emerged as one of the most important and widely used semiconducting materials. Its optoelectronic and mechanical properties make it ideal for a variety of applications, including light-emitting diodes (LEDs), high-temperature transistors, sensors and biocompatible ...

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Lehigh engineer discovers a high-speed nano-avalanche

24-Aug-2016

Charles McLaren, a doctoral student in materials science and engineering at Lehigh University , arrived last fall for his semester of research at the University of Marburg in Germany with his language skills significantly lagging behind his scientific prowess. "It was my first trip to Germany, ...

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First single-enzyme method to produce quantum dots revealed

11-May-2016

Quantum dots (QDs) are semiconducting nanocrystals prized for their optical and electronic properties. The brilliant, pure colors produced by QDs when stimulated with ultraviolet light are ideal for use in flat screen displays, medical imaging devices, solar panels and LEDs. One obstacle to mass ...

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Uncovering oxygen's role in enhancing red LEDs

14-Jan-2016

In the fabrication of solid state lighting devices, scientists are learning, oxygen plays a two-edged role. While oxygen can impede the effectiveness of gallium nitride (GaN), an enabling material for LEDs, small amounts of oxygen in some cases are needed to enhance the devices' optical ...

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Forming glass shapes: Lowering the 'softening temperature' via electric field

05-Nov-2015

On a serendipitous occasion, while attending a conference and listening to Rishi Raj, a professor of mechanical engineering at the University of Colorado Boulder, speak about the remarkable effect of moderate electrical fields on lowering the sintering temperature of certain ceramic powders, ...

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Physicists map the strain in graphene

01-Oct-2015

An international group of scientists is reporting a breakthrough in the effort to characterize the properties of graphene noninvasively while acquiring information about its response to structural strain. Using Raman spectroscopy and statistical analysis, the group succeeded in taking nanoscale ...

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Nanocatalyst is a gas

Rice U. formula could make fuel production better, greener

22-Sep-2010

A nanoparticle-based catalyst developed at Rice University may give that tiger in your tank a little more roar. A new paper in the Journal of the American Chemical Society details a process by Rice Professor Michael Wong and his colleagues that should help oil refineries make the process of ...

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Lehigh University professor receives Astellas Award for arsenic groundwater remediation efforts

15-Dec-2009

Arup K. SenGupta, Ph.D., a professor of civil, environmental and chemical engineering at Lehigh University in Bethlehem, Pa., has been chosen to receive a 2009 Astellas USA Foundation Award. The award, administered by the American Chemical Society, is given to individuals who have made ...

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Lehigh receives grant to reduce cost of carbon capture at coal-fired power plants

Researchers look at entire system in hopes of lowering CO2 capture costs and boosting efficiency

24-Nov-2009

Lehigh University's Energy Research Center (ERC) has been awarded a grant from the U.S. Department of Energy (DOE) to develop methods of recovering and reusing the heat that would be generated by the carbon-dioxide (CO2) compression process in a carbon capture system. The goal of the research ...

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Engineers image nanostructure of a solid acid catalyst and boost its catalytic activity

Researchers from Lehigh and Rice universities combine electron microscopy and spectroscopy techniques to shed new light on a tungstated zirconia catalyst

11-Nov-2009

The catalytic processes that facilitate the production of many chemicals and fuels could become much more environmentally friendly thanks to a breakthrough achieved by researchers from Lehigh and Rice Universities. In an article published Nov. 8 by the journal Nature Chemistry, the researchers ...

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