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Based on the thermal properties of quantum dots, a novel method for bearing cage temperature measurement is proposed in this paper. Firstly, the synthesis of quantum dots is briefly introduced, and the composited film by DDA polyelectrolyte-CdTe quantum dots for temperature sensor is prepared according to the layer-by-layer self-assembly method. Then the linear reversible change of CdTe quantum dots...
An investigation on the integrity of micro-hotplates using in situ digital holographic microscopy is reported. The surface topography and surface evolution of the devices during high-temperature operation (heating/cooling cycles) is measured with nanometer-scale resolution. A localized permanent out-of-plane surface deformation of 40% of the membrane thickness caused by the top measurement electrodes...
We report on an attempt of cooling microsystem surface using a microminiatured heat sink. We also aim to enhance the outward heat flux from a microsystem surface via the radiation, optical (far infrared), and thermal properties of a copper nanostrip array that acts as a band selective coupler; emitting heat on the surface as non-radiative electromagnetic components (phonon or plasmon polaritons at...
Thermoreflectance thermal imaging is a proven method for obtaining quantitative temperature maps of active semiconductor devices in the nanometer to millimeter size. The resolution of such images obtained using a charge coupled device (CCD) based thermoreflectance system in a reasonable time, has been shown to be 200 nanometer spatial (visible light diffraction limit), 0.1 K temperature sensitivity,...
Vibration-free miniature cryogenic coolers are relevant to a wide variety of applications, including cooling of detectors in space missions, low-noise amplifiers and superconducting electronics. For these applications, the cryogenic system (cooler plus interface) should be small, low-cost, low-interference and above all very reliable (long-life). A cold stage based on micro-electro-mechanical systems...
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