NDLI: Set up of a Microbalance to Measure Very Low Masses

Content Provider	IEEE Xplore Digital Library
Author	Domingo Beltran, M. Millan Verdu, C. Rubio Alvarez, J. Canto Domenech, J. Santonja Molto, C. Luna Molina, R.
Copyright Year	2007
Description	Author affiliation: Univ. Polytech. de Valencia, Valencia (Domingo Beltran, M.; Millan Verdu, C.; Rubio Alvarez, J.; Canto Domenech, J.; Santonja Molto, C.; Luna Molina, R.)
Abstract	In the Laboratory of Experimental Astrophysics of the Universidad Politecnica de Valencia we make ices analogs to those that can be found in different astrophysical environments as, for example, interstellar medium and in many objects of our Solar System. We study several characteristics of these ices, like density integrated absorbance of its main absorption bands and refractive inde. In order to obtain the first, we need to measure the thickness (around 1 micrometer) and the mass (around 60 micrograms with relative error around 3%.). The first one is obtained by interferometry with lasers and the second using a quartz crystal microbalance (QCMB). It utilizes the piezoelectric qualities of quartz crystal. The application of an electric field to the gold coated quartz crystal causes a shear deformation (parallel to the gold surface). The crystal can reach the resonance if an alternating electric field is applied at a particular frequency that, for its part, depends on the mass deposited on it.
Starting Page	337
Ending Page	340
File Size	427521
Page Count	4
File Format	PDF
ISBN	9780769529882
DOI	10.1109/SENSORCOMM.2007.4394944
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-14
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gold Astrophysics Absorption Extraterrestrial measurements Ice Solar system Optical refraction Quantum cascade lasers Thickness measurement Interferometry
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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