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.
In this work, the frost/ice formation on superhydrophobic/piezoelectric hybrid layer was investigated. The hybrid layer is prepared by depositing a superhydrophobic coating on a 1 mm thick piezoelectric PZT-4 ceramic sheet with diameter of about 47 mm. The contact angle of water drop on surface was 156°. The hybrid layer was actuated to vibrate by sinusoidal voltage waveform with amplitude of 200...
An electrically triggered VO2 RF switch with a record switching cut off frequency (FCO) of 26.5THz was demonstrated. The switch exhibits an isolation better than 35dB and a low 0.5dB insertion loss up-to 50GHz. The switch features a highly linear response with 1-dB compression point (PidB) better than 12dBm and output third-order intercept point (OIP3) better than 44dBm. The fast insulator to metal-transition...
The LED device for illumination in space application has been well done in the past few years, including the in cabin application on bio-science satellite in 2007 and out cabin application on spacecraft in 2008 to shine on the first human step in space of Chinese astronaut. The thermal property of assembled LED lamp has been experimentally characterized by a recently developed spectroscopy method,...
The characteristics of non-ionising radiation and sensitivity to water increase the potential of Terahertz Pulsed Imaging (TPI) to become a new biomedical imaging technique. Furthermore, the design of a portable probe in the TPI system by TeraView has improved the flexibility of the TPI system. In this paper we present recent work using the THz probe to measure the skin in different positions on the...
The paper described a design of digital angular sensor with 180deg measurement range, based on ratiometric and capacitive measurement principle, and has a metallic and ungrounded rotor plate. Owing to its structure and measurement mechanism, the sensor has intrinsic reliability and can effectively restrain common mode disturbances, say, temperature, moisture, dust etc., without any additional compensator...
General electric, under contract with the Air Force Research Labs (AFRL), has successfully developed and tested a high speed, multimegawatt superconducting generator. The generator was built to demonstrate high temperature superconducting (HTS) generator technology for application in a high power density multimegawatt electric power system (MEPS) for the air force. The demonstration tested the generator...
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.