DYNAMIC ANALYSIS OF SINGLE WALLED BNNT BASED NANOMECHANICAL RESONATOR

Abstract

Boron nitride nanotubes were theoretically predicted in 1994 followed by their eminent fabrication by arc discharge in 1995. During present work investigates the vibrational characteristic of fixed free single walled boron nitride nanotube with attached bacterium or virus on free end to explore their suitability as bacterium or virus detector device or biosensor. The continuum solid modeling based finite element method approach has been used to analyze the various modes and resonant frequency shift caused by bacterium or virus on beam tip. The different types of bacterium or virus at the tip of the fixed free single walled boron nitride nanotubes have been analyzed for their resonant frequency variation based analysis. Although Boron nitride nanotubes were assumed to straight until but it's been recently been found that they possess waviness hence another of work deals with modeling a wavy single walled boron nitride nanotube and investigates the vibrational characteristics of single walled boron nitride nanotube (SWBNNT) with surface deviation as waviness along its axis. The cantilevered and bridged configurations are considered to explore their feasibility as nano mechanical sensors for detection of mass of nanoscale level. Investigates the vibrational characteristics of single walled boron nitride nanotube (SWBNNT) with surface deviation as waviness along its axis. The cantilevered and bridged configurations are considered to explore their feasibility as nano mechanical sensors for detection of mass of nanoscale level. The defects in form of single vacancies and double vacancies have investigated for their effect on resonant frequency behavior SWBNNT. Current work also deals with effect of chirality on resonant frequency behavior of SWBNNT.