Template-grown metal nanowires as resonators: performance and characterization of dissipative and elastic properties.
Metal resonators can significantly extend the scope of nanoelectromechanical systems (NEMS) through access to a broader range of electrical, thermal, and surface properties. The material behavior of template-electrodeposited gold (Au) and rhodium (Rh) nanowires (NWs) and their performance as resonators was investigated. Nanowire integration by a bottom-up assembly scheme enabled creation of fixed-free metal beams without distortion or tension. Surprisingly, even a soft metal such as Au yielded viable nanocantilever resonators, with Q-factors of 600-950 in high vacuum, while stiffer RhNW had Q-factors of 1100-1300. NWs with diameter approximately 300 nm yield Young's modulus values of 44 +/- 12 GPa for Au and 222 +/- 70 GPa for Rh, both lower than bulk values. This observation is in agreement with two other measurement techniques.
Li
Mingwei
M
Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Mayer
Theresa S
TS
Sioss
James A
JA
Keating
Christine D
CD
Bhiladvala
Rustom B
RB
D004548:Elasticity; D006046:Gold / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D053770:Nanowires / Q000737:chemistry*; D015203:Reproducibility of Results; D012238:Rhodium / Q000737:chemistry
D006046:Gold; D012238:Rhodium