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.
La0.7Sr0.3MnO3 (LSMO) suspended bolometers of various geometries have been fabricated using silicon micromachining techniques. Thanks to adequate geometry design and to the operating conditions (temperature and bias current), these uncooled bolometers could be limited by phonon noise and achieve NEP values below 1 pW Hz−1/2 around 300 K.
Metamagnetism, a sudden increase in the magnetization of a material with a small change of external magnetic field, are calling more attentions because of their rich magnetic phenomena and scientific significance [1][2]. There are quite different physical causes for different types of metamag-nets. In this work, metamagnetism has been found in arc-melting Sm(Ni0.5Fe0.4Cu0.1)7. The physical property...
This paper proposes an optimized microwave heater at 20 GHz for nanoliter scale liquid samples in digital microfluidics. The developed measurement setup allows translating of the reflection coefficient of the heater to the temperature change of the water droplet via the temperature dependency of the liquid permittivity, thus avoiding a contact-based temperature measurement. Measurements have been...
We present in this paper an inexpensive sensor realized on printed circuit board for broadband dielectric characterization of both liquids and solids. It is based on a CPW-CPW transition and statistical calibration. The specific property of the approach is that no assumption regarding cascading transmission lines with different properties has to be made as permittivity is obtained by a single-tier...
Temperature and strain sensitivities of fiber Bragg grating inscribed in silica-germanate fiber are experimentally investigated. Thanks to the different sensitivities of individual resonance peaks, the configuration has the potential to measure these two parameters simultaneously.
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,...
In this work, the failure characteristics of lead-free solder joint were investigated with low temperature micro-impact test. A impact testing method with shear rate of 1 m/s and temperatures ranging from room temperature to -40°C was set up to measure the interfacial strength of solder joints for evaluating the reliability. Experimental results have shown that the testing temperatures were found...
We report our results on uncooled La0.7Sr0.3MnO3 (LSMO) suspended bolometers fabricated using silicon micromachining techniques. Suspended LSMO bridges showed very low effective thermal conductance (~10-7 W K-1) and very low NEP value (~ 1 pW Hz-1/2) at 300K.
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.