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.
A photonic crystal based on a macroporous silicon structure has been fabricated and successfully used for the detection of carbon dioxide. In this paper, the device and the measurement results are presented. The sensing device here described uses an optical approach to the detection of the gas. The use of a photonic crystal allows creating a compact device working in the medium infrared spectral range...
We report the fabrication of polycrystalline silicon piezoresistive cantilevers with submicron width and thickness for static force measurements, using electron beam lithography (EBL) and silicon micromachining. For cantilevers with length of 150 µm, leg width of 500 nm and thickness of 320 nm, a force sensitivity of 97 µV/pN and a resolution of 30 pN have been obtained. Bigger cantilevers (leg width...
Nanowires (NWs) of tin oxide have been synthesized by chemical vapor deposition method (CVD) using Au as catalyst. The nanostructures were characterized with different analysis techniques (SEM, XRD and XPS) to study the effect of preparation conditions in the nanowire growth. The growth mechanisms of the nanowires were also discussed. NWs sensitive layers were tested as resistive sensors to acetone...
The objective of this work is to develop a ZnO conductometric gas sensor to monitor two key pollutants in indoor environments: benzene and formaldehyde. Conductometric sensors are widely used for this purpose. The final aim of the sensor is to be integrated in an air quality measuring system connected to the HVAC (Heat Ventilation and Air Conditioning) system so that ventilation is activated according...
The aim of this work is to implement a series of novel multiparametric techniques based on micro-nanotechnology to evaluate the quality of natural gas. Two low cost sensors have been fabricated by thin film technology and tested under different natural gas compositions. A thermal conductivity sensor to determine the MN of the gas, and a SAW sensor, which detects the change on gas viscosity, to calculate...
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.