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In this paper, a novel power cycling system with thermal test vehicle design following the concept defined in JESD22-A122 standard has been established to better approximate field operating conditions. The test unit used in the system is to simulate real product, therefore it is not only package on board but also with an external fan. A closed-loop controller with power modules in this system is able...
Heat exchange between an object and environment can be split into conductive, convective and radiative parts. It is quite a common to think that the radiation plays a role only at temperatures well above 100°C. In practice, such criteria should be checked for particular application in mind. With simple estimations, it is shown that utilizing of the IR radiation may enhance the heat transfer through...
A novel technique has been developed under a DNDO SBIR Program to improve the quality and availability of law enforcement and first responder training in the use of Preventative Radiological/Nuclear Detection (PRND) equipment. This training method is implemented in a software system designated as RAILS (Realistic and Adaptive Interactive Learning System), which allows trainees to practice finding,...
Neutrinoless double-beta decay searches play a major role in determining the nature of neutrinos, the existence of a lepton violating process, and the effective Majorana neutrino mass. The MAJORANA Collaboration proposes to assemble an array of HPGe detectors to search for neutrinoless double-beta decay in 76Ge. Our proposed method uses the well-established technique of searching for neutrinoless...
Magnetic Faraday effect was demonstrated in cobalt-nanoparticle doped polymer fibre material fabricated using the powder-mixing method. Magneto-optical rotation of the plane of polarisation was demonstrated using a rare-earth magnet. Applications include an all-fibre optical isolator.
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