Conventional cooling method consumes large amount of electricity and heavily relies on hydrofluorocarbon coolants, which are considered “super-greenhouse effect” gases. Electrocaloric (EC) demonstrates high energy efficiency, involves no evaporative coolant, is a promising next-generation technology. A safe operational temperature change the EC material currently limited to well below 10 K, dev...

We report the room temperature electroluminescence (EL) at 1.6 microm of a Ge n+/p light emitting diode on a Si substrate. Unlike normal electrically pumped devices, this device shows a super linear luminescence enhancement at high current. By comparing different n type doping concentrations, we observe that a higher concentration is required to achieve better efficiency of the device. Thermal ...

insects are poikilothermes, hence environmentalfactors, and primarily temperature can affect their biological activities and behavior. in this study thermal range preferred by ooencyrtusfecundusferrier &voegelewas; investigated by a device producing a thermal gradient from 16 to47ºc. temperature of different parts of the arena was precisely recorded by eight thermometers entered the arena from ...

Temperature dependencies of the threshold current, device slope efficiency, and heterobarrier electron leakage current from the active region of InGaAsP–InP multiquantum-well (MQW) lasers with different profiles of acceptor doping were measured. We demonstrate that the temperature sensitivity of the device characteristics depends on the profile of p-doping, and that the variance in the temperat...

Thermal management of microelectronic devices is an ongoing technological challenge that directly affects device-level and system-level performance and reliability [1]. The fundamental process of electron transport in a transistor device results in dissipation of heat. This causes temperature rise, which in turn limits device performance. For most semiconductor devices, performance goes down wi...

With the increase in heat dissipation from microelectronic devices and the reduction in overall form factors, thermal management bmomes a more and more important element of electronic product design. Both the performance reliability and life expectancy of electronic equipment are inversely related to the component temperature of the equipment. The relationship between the reliability y and the ...

Polychloro-para-xylylene (parylene-C) is a flexible and transparent polymer material which has excellent chemical stability and high biocompatibility. Here we demonstrate a polymer device based on single-component parylene-C with memory and temperature sensing functionalities. The device shows stable bipolar resistive switching behavior, remarkable storage window (>104), and low operation volta...