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The application of most polymer ferroelectrets is limited because of their relatively low charge stability at high temperature. By means of electrical charging at elevated temperatures, the thermal stability of the ferroelectret charge can be enhanced. Polyethylene naphthalate (PEN) ferroelectrets charged at room temperature show stability up to 80degC, which is already 20degC higher than the polypropylene...
A non-classical device structure namely self-aligned quasi-silicon-on-insulator (SOI) metal-oxide semiconductor (MOS) field-effect transistor with pi-shaped semiconductor conductive layer (SA-piFET) is presented, seeking to improve the performance and upgrade the reliability of the SOI-based devices. Designed to equip with a SA single crystal silicon channel layer, plus a natural source/drain (S/D)...
In this paper, the method of Spatial Fourier Transform has been used to investigate the pattern formation dynamics in a dielectric barrier discharge (DBD) system. With this method, patterns formed in the DBD system can be transformed into smooth frequency spectrum. The frequency constitution of discharge pattern can be analyzed. In our experiment mixed gas of 96% Ar and 4% air at 0.9 atm is used as...
Optical communication systems based on dense wavelength division multiplexing (DWDM) would benefit from the ability to adjust the operating wavelength of a laser transmitter. Previous attempts, including thermal adjustment, etalon based wavelength locking, and various types of optical frequency and phase locked loops such as the Pound-Drever-Hall technique suffer from weaknesses including sensitivity...
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