The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper describes the design, fabrication, and testing of a photonic MEMS accelerometer that uses a hemispherical microcavity to transduce the motion of the proof mass. The cavity design provides stable operation that is relatively tolerant of misalignment errors. The prototype sensor is shown to have optical resonances that closely match the expected Airy function model.
A new design for an optomechanical accelerometer is presented. The design includes a hemispherical optical cavity that can achieve high finesse and a proof mass that is well-constrained by silicon nitride beams. Based on previous work and analysis, the resolution of the accelerometer will be below 1 µg/rt-Hz. Novel MEMS fabrication processes have been developed for the accelerometer that provide optimized...
A method of forming germanium p-n junction by laser doping is demonstrated. Low bulk and surface leakage current density of 5.4 mA/cm\(^{\mathrm {\mathbf {2}}}\) and 2.0 \(\mu \) A/cm, respectively, were obtained. The leakage current density was comparable with the diodes formed by rapid thermal diffusion, but approximately two orders of magnitude lower than the diodes formed by ion implantation...
This paper presents the design of a fine granularity SNR scalable video coder for low-delay applications. Specifically, temporal prediction is introduced into the FGS layer of closed-loop P-frames. The prediction is formed adaptively from the enhancement layer reference and the base layer reference, utilizing information coded in the base layer. This novel FGS coder can control drift that may occur...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.