2014
DOI: 10.1002/pssa.201330087
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Vibrational and mechanical properties of Si/Ge nanowires as resonators: A molecular dynamics study

Abstract: In this work, we examine the vibrational and mechanical properties of clamped‐clamped rectangular SixGe1−x and Si/SixGe1−x nanowires (NWs) using molecular dynamics simulations. A virtual atomic force microscope nanotip is used to drive the vibration. The frequency response, the beat vibration phenomenon and the calculation of mechanical properties such as quality factor Q and Young's modulus E are thoroughly analyzed. The influence of added mass and hydrogen passivation on the NW resonator performance is also … Show more

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Cited by 22 publications
(13 citation statements)
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“…Duan et al [16] extended the surface elasticity theory to nanoinhomogeneities taking into account the surface/interface stress effect. The size effect of nanobeams has also been well investigated based on the above-improved surface elasticity theory [17][18][19][20][21][22], in which the predicted effective elastic modulus depending on the characteristic size of nanobeams is consistent with the existing experimental data and molecular dynamics (MD) results [19,[23][24][25].…”
Section: Introductionmentioning
confidence: 61%
“…Duan et al [16] extended the surface elasticity theory to nanoinhomogeneities taking into account the surface/interface stress effect. The size effect of nanobeams has also been well investigated based on the above-improved surface elasticity theory [17][18][19][20][21][22], in which the predicted effective elastic modulus depending on the characteristic size of nanobeams is consistent with the existing experimental data and molecular dynamics (MD) results [19,[23][24][25].…”
Section: Introductionmentioning
confidence: 61%
“…Li et al (2014) extended the Y-L model to the Timochenko nanobeam case. In addition, the molecular dynamics simulation method, as a major numerical approach, was also adopted to study the bending behavior of nanowires ( Park et al, 2005;Chhapadia et al, 2011;Mohammadi and Sharma, 2012;Georgakaki et al, 2014 ).…”
Section: Introductionmentioning
confidence: 99%
“…1,13 In addition, molecular dynamics (MD) simulation, as a major numerical approach, has also been adopted to study the size effect of nanowires' elastic properties. [16][17][18][19] In nano-devices and nano-electro-mechanical systems (NEMs), nanowires are often used as resonant flexural structures, such as chemical and biological sensors and high frequency resonators. [20][21][22][23] Size dependent elastic modulus of nanowires should induce a different resonant frequency from that of a corresponding bulk solid.…”
Section: Introductionmentioning
confidence: 99%