Journal ArticleDOI
Measurements of the mechanical Q of single-crystal silicon at low temperatures
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In this article, the mechanical quality factor of a single crystal of silicon vs. temperature was measured at T = 3.5K and a value of 2 × 109 was obtained.Abstract:
Measurements of the mechanical quality factor Q in a single crystal of silicon vs. temperature have been made. A value of 2 × 109 has been measured at T = 3.5K.read more
Citations
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Quality factors in micron- and submicron-thick cantilevers
TL;DR: In this article, measurements of the mechanical quality factor Q for arrays of silicon-nitride, polysilicon, and single-crystal silicon cantilevers have been obtained by studying the dependence of Q on cantilever material, geometry, and surface treatments.
Journal ArticleDOI
Intrinsic dissipation in high-frequency micromechanical resonators
Pritiraj Mohanty,Darrell A Harrington,Kamil L. Ekinci,Ya-Tang Yang,M. J. Murphy,Michael L. Roukes +5 more
TL;DR: In this article, the intrinsic dissipation in micron-sized suspended resonators machined from single crystals of galium arsenide and silicon was measured at the natural frequencies of structural resonance or modes of the structure associated with flexural and torsional motion.
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Thermo-optic coefficient of silicon at 1550 nm and cryogenic temperatures
TL;DR: In this article, the authors measured the thermo-optic coefficient dn/dT of silicon at 1550nm in the wide temperature range from 5 K to 300K.
Journal ArticleDOI
Thermoelastic loss in microscale oscillators
TL;DR: In this article, a simple model of thermoelastic dissipation is proposed for general, free standing microelectromechanical (MEMS) and nanoelectromeechanical oscillators, which defines a flexural modal participation factor, the fraction of potential energy stored in flexure.
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Thermal noise in optical cavities revisited
TL;DR: In this paper, the authors correct the analytical estimate for the spacer contribution given by Numata et al. using Levin's formulation of the fluctuation-dissipation theorem.
References
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Journal ArticleDOI
Measurement of Elastic Constants at Low Temperatures by Means of Ultrasonic Waves–Data for Silicon and Germanium Single Crystals, and for Fused Silica
TL;DR: In this article, the authors measured velocities of propagation and elastic constants in the 10-30 cm range of a fused silica rod, through polystyrene or silicone one-quarter wavelength seal, and into the solid specimen.
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The Velocity of Longitudinal Waves in Cylindrical Bars
TL;DR: The velocity of longitudinal waves in cylindrical bars may be expressed as the velocity at infinite wave-length times a function of two variables: Poisson's ratio and the ratio of the diameter of the bar to the wave length as mentioned in this paper.
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Thermal Expansions from 2 to 40°K of Ge, Si, and Four III-V Compounds
P. W. Sparks,C. A. Swenson +1 more
TL;DR: In this article, linear thermal-expansion data were given for Ge, Si, GaAs, GaSb, InAs, and InSb at temperatures from 1.89°C to 40°C.