Opto Diode has introduced the second product in the super-high-power series of gallium aluminum arsenide (GaAlAs) infrared (IR) emitters, the OD-110W. Featuring a very uniform optical beam, the new device is designed especially for military imaging applications. The OD-110W features four wire bonds on die corners and a hermetically-sealed, 3-lead, standard TO-39 package with … [Read more...]
Graphene-Graphite “Quilt” Removes and Spreads Heat from Hot Spots
A group of researchers at the University of California, Riverside Bourns College of Engineering have developed a technique to keep cool a semiconductor material used in everything from traffic lights to electric cars. Gallium Nitride (GaN), a semiconductor material found in bright lights since the 1990s, is used in wireless applications due to its high efficiency and high … [Read more...]
Small Bumps in “Semiconductor Billiards” Have Unexpectedly Large Effect
There’s nothing worse than a pool table with an unseen groove or bump that sends your shot off course: a new study has found that the same goes at the nano-scale, where the “billiard balls” are tiny electrons moving across a “table” made of the semiconductor gallium arsenide. In a research paper titled “The Impact of Small-Angle Scattering on Ballistic Transport in Quantum … [Read more...]
Bullet-Proof Vest with Internal Fans and Liquid Cooling Technology
The Swiss Federal Laboratories for Materials Science and Technology (EMPA) has developed a “smart” bullet-proof protective vest that features water-filled Coolpads and an internal mini fan. The protective vest was designed to prevent on-duty police officers from overheating while maintaining their safety and wellbeing. The vest is comprised of a specialized fabric spacer … [Read more...]
Researchers Control Heat Flow with Atoms
Through a combination of atomic-scale materials design and ultrafast measurements, researchers at the University of Illinois have revealed new insights about how heat flows across an interface between two materials. The researchers demonstrated that a single layer of atoms can disrupt or enhance heat flow across an interface. The researchers first deposited a single layer of … [Read more...]
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