1. Zoran Popović, University of Belgrade, Faculty of Physics, Serbia
2. Milan Damnjanović, Serbia
3. Ivanka Milosevic, Faculty of Physics, University of Belgrade, Serbia
Properties of carbon nanotubes like extremely low mass density and high quality factor, offer opportunity for construction of ultrasensitive mechanical resonators for detection small masses, forces or pressure. As a consequence of high quality factor, yoctogram intrinsic mass resolution of different carbon based nanomechanical resonators have been predicted in recent theoretical studies and confirmed experimentaly. Here is given theoretical prediction about intrinsic dissipation of vibration energy of carbon nanotubes, related with their intrinsic quality factor. Phonon lifetime, used for calculation of quality factor, was estimated from the three phonon normal processes, considered all inter and intra bands crossing. Attenuation of vibration, caused by phonon-phonon scattering, depends on temperature and length of double- clamped nanotube. Research is performed on straight and realistic model of helically coiled single wall carbon nanotubes.
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Thematic field:
SIMPOZIJUM A - Nauka materije, kondenzovane materije i fizika čvrstog stanja
Date:
22.07.2018.
Contemporary Materials 2018 - Savremeni Materijali
