TY - JOUR
T1 - Mechanical resonance properties of porous graphene membrane; simulation study and proof of concept experiment
AU - Yoon, Juhee
AU - Kwon, Min Hee
AU - Shin, Dong Hoon
AU - Lee, Sang Wook
N1 - Publisher Copyright:
© 2021 Korean Physical Society
PY - 2021/3
Y1 - 2021/3
N2 - Mechanical resonance properties of porous graphene resonators were investigated by simulation studies. The finite element method was utilized to design the porous graphene membrane pattern and to calculate the mechanical resonance frequency and quality factor. The changes in the resonance frequency and quality factor were systematically studied by changing the size, number, and relative location of pores on the graphene membrane. Mass loss and carbon-carbon bond break were found to be the main competing parameters for determining its mechanical resonance properties. The correlation between the geometry and the damping effect on the mechanical resonance of graphene was considered by suggesting a model on the damping factor and by calculating the membrane deflections according to the pore location. Based on the simulation results, an optimal porosity and porous geometry were found that gives the maximum resonance frequency and quality factor. Suspended graphene with various number pore structures was experimentally realized, and their mechanical resonance behaviors were measured. The trend of changes in resonance frequency and quality factor according to the number of pores in the experiment was qualitatively agreed with simulation results.
AB - Mechanical resonance properties of porous graphene resonators were investigated by simulation studies. The finite element method was utilized to design the porous graphene membrane pattern and to calculate the mechanical resonance frequency and quality factor. The changes in the resonance frequency and quality factor were systematically studied by changing the size, number, and relative location of pores on the graphene membrane. Mass loss and carbon-carbon bond break were found to be the main competing parameters for determining its mechanical resonance properties. The correlation between the geometry and the damping effect on the mechanical resonance of graphene was considered by suggesting a model on the damping factor and by calculating the membrane deflections according to the pore location. Based on the simulation results, an optimal porosity and porous geometry were found that gives the maximum resonance frequency and quality factor. Suspended graphene with various number pore structures was experimentally realized, and their mechanical resonance behaviors were measured. The trend of changes in resonance frequency and quality factor according to the number of pores in the experiment was qualitatively agreed with simulation results.
KW - Finite element method
KW - Mechanical resonator
KW - Nanomechanical system
KW - Porous graphene
UR - http://www.scopus.com/inward/record.url?scp=85099197010&partnerID=8YFLogxK
U2 - 10.1016/j.cap.2020.12.011
DO - 10.1016/j.cap.2020.12.011
M3 - Article
AN - SCOPUS:85099197010
SN - 1567-1739
VL - 23
SP - 30
EP - 35
JO - Current Applied Physics
JF - Current Applied Physics
ER -