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 presents the theory, fabrication, and experimental results for a high-performance low-power micro gas chromatography column. The suspended-dielectric 1-m-long column is split into two sections, permitting independent pressure and temperature programming. Integrated column heaters have a mean resistance of 16.8 kOmega and a temperature coefficient of resistance of 431 ppm/degC. The suspended...
This paper describes the realization of low-power high-speed micro gas chromatography columns for portable gas analysis systems. The 25cm-long ultra-low-mass MEMS columns, fabricated using stress-free PECVD-oxynitride films in a CMOS-compatible process, allow high-performance separations of n-alkane gas mixtures, are capable of multi-second analysis, and can dissipate less than 10mW at 150degC in...
The authors report an integrated silicon sensor capable of monitoring the purity of semiconductor process gases at or near the point of use. The device utilizes a selectively etched dielectric window, which supports a thin deposited metal film and electrodes for sensing the film conductivity. The planar 1.2-mm*1.2-mm*1- mu m-thick window has a buried diffused-silicon heater. The window has a heating...
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.