2009-03-11

Oxford Instruments - TDI unites LED maker develop semi-polar GaN

Group III-nitride materials have been widely used for visible and ultraviolet LEDs and blue, violet laser diodes in the past decade. Most of these optoelectronic devices are typically fabricated on the conventional polar (0001) c-plane oriented substrate materials. Devices grown on the polar substrate orientation suffer undesirable spontaneous and piezoelectric polarization resulting in significant band bending in the quantum well. This reduces radiative recombination efficiency and lowers device performance.
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International automotive supplier FORVIA HELLA has fully localized its digital, high-resolution headlamp system SSL | HD in China for the first time in the context of a new series project. Both series development as well as manufacturing take ... READ MORE

Heart rate, blood flow, and other physiological metrics have been central to health monitoring for decades. However, numerous relevant changes in the human body develop insidiously over time and may go undetected when relying on single measure... READ MORE