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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 597-600 |
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Jafariani F, Ahadi akhlaghi E, Avvalin chaharsooghi M, Moradimehr S, Tavassoli M T. Force measuring in pico-Newton scales based on interferometry. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :597-600
URL: http://opsi.ir/article-1-1687-en.html
URL: http://opsi.ir/article-1-1687-en.html
Fatemeh Jafariani * 
1, Ehsan Ahadi akhlaghi1 , Mohammad Avvalin chaharsooghi1 , Shiva Moradimehr1 , Mohammad taghi Tavassoli2
1, Ehsan Ahadi akhlaghi1 , Mohammad Avvalin chaharsooghi1 , Shiva Moradimehr1 , Mohammad taghi Tavassoli2
1- Department Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
2- Department Physics, Faculty of science, University of Tehran, North Kargar Avenue, Tehran, Iran
2- Department Physics, Faculty of science, University of Tehran, North Kargar Avenue, Tehran, Iran
Abstract: (1658 Views)
In this paper, we introduce an apparatus for measurement of weak forces based on measuring nanometer displacements and optical systems. The basic part of set up is a modified Michelson interferometer that the mirrors are replaced by two lightweight and thin reflective stripes. One of these reflective stripes is responsible for detecting the force that acts as a spring. The spring constant of the cantilever is adjustable with its length, so that a wide range of force can be measured in the range of pico-Newton to milli-Newton. The electrostatic force in a plane capacitive system was used to calibrate the force apparatus. The uncertainty of the force measurement was obtained about 50 pico-Newton.
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