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      Study and Fabrication of Electrical & Electromechanical Resonators Based on Nanostructures for Sensing Application

      , Ph.D. Dissertation Sharif University of Technology Fardindoost, Somayeh (Author) ; Iraji Zad, Azam (Supervisor) ; Sarvari, Reza (Supervisor) ; Mohajerzadeh, Shamsoddin (Co-Advisor)
      Abstract
      In this thesis we present fabrication, characterization, and experimental results describing electrical actuation and readout of the mechanical vibratory response of PVP, graphene-doped and ZnO fibers by employing electrical actuation. For a fiber resonator with an approximate radius of 850 nm and length of 100 µm, we observed a resonance frequency around 580 kHz with a quality factor (Q) of about 2511 in air at ambient conditions. Through the use of finite element simulations, we show that the reported frequency of resonance is relevant. Also, the measurements were performed in an enclosed chamber with controlled levels of ethanol vapor. The adsorption of ethanol causes a shift in the... 
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