Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Ho Bun Chan"'
Publikováno v:
Journal of Low Temperature Physics. 201:4-10
A micro-electromechanical resonator, consisting of a $$125 \times 125\,\upmu \hbox {m}^2$$ center plate suspended $$2\,\upmu \hbox {m}$$ above a substrate, was immersed in $$^4$$ He along with a quartz tuning fork. The tuning fork was placed 5 mm abo
Publikováno v:
Journal of Low Temperature Physics. 196:177-183
A micro-electromechanical plate resonator suspended 2 $$\upmu $$ m above a substrate was immersed in $$^4$$ He at 14 mK at saturated vapor pressure. At these temperatures, four vibrational modes of the device are observed. The corresponding motion of
Autor:
Lu Tang, Riccardo Messina, Mingkang Wang, C. Y. Ng, Mauro Antezza, Ho Bun Chan, John Alexander Crosse, Che Ting Chan, Brahim Guizal
Publikováno v:
Nature Communications
Nature Communications, Nature Publishing Group, 2021, 12, pp.600. ⟨10.1038/s41467-021-20891-4⟩
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Nature Communications, Nature Publishing Group, 2021, 12, pp.600. ⟨10.1038/s41467-021-20891-4⟩
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Quantum fluctuations give rise to Casimir forces between two parallel conducting plates, the magnitude of which increases monotonically as the separation decreases. By introducing nanoscale gratings to the surfaces, recent advances have opened opport
Publikováno v:
Physical Review B. 101
We report a comprehensive investigation of the effects of quantum turbulence and quantized vorticity in superfluid $^{4}\mathrm{He}$ on the motion of a microelectromechanical systems (MEMS) resonator. We find that the MEMS is uniquely sensitive to qu
Publikováno v:
Journal of Low Temperature Physics. 187:309-323
A superfluid $$^3$$ He film with a thickness of 1.25 $$\upmu $$ m was studied using a microelectromechanical oscillator at various pressures of 9.2, 18.2, 25.2, and 28.6 bars. The oscillator was driven in the linear damping regime where the damping c
Publikováno v:
Nature Communications
Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019)
Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019)
Mechanical resonators are widely used as precision clocks and sensitive detectors that rely on the stability of their eigenfrequencies. The phase noise is determined by different factors including thermal noise, frequency noise of the resonator and n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::599f8807160d7dcb1e11d93d64eb2045
http://wrap.warwick.ac.uk/125003/1/WRAP-frequency-stabilization-noise-induced-spectral-narrowing-resonators-zero-dispersion-Khovanov-2019.pdf
http://wrap.warwick.ac.uk/125003/1/WRAP-frequency-stabilization-noise-induced-spectral-narrowing-resonators-zero-dispersion-Khovanov-2019.pdf
Publikováno v:
Journal of Low Temperature Physics. 183:313-319
We have developed an improved actuation/detection scheme for a comb-drive micro-electro-mechanical oscillator as a probe to study quantum fluids. This symmetric scheme has many advantages over the asymmetric scheme used previously. In this report, we
Publikováno v:
Applied Physics Letters. 115:203101
We use electromigration for in situ control of the electrical impedance of nanoelectromechanical resonators, the vibrations of which are detected with magnetomotive detection. The resonator consists of a doubly clamped, suspended silicon nitride beam
Publikováno v:
Physical review letters. 121(3)
We measured the electromagnetic stress-induced local strain distribution on a centimeter-sized parallel-plate metallic resonant unit illuminated with microwave. Using a fiber interferometer, we found that the strain changes sign across the resonant u
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018)
Nature Communications
Nature Communications
Self-sustained vibrations in systems ranging from lasers to clocks to biological systems are often associated with the coefficient of linear friction, which relates the friction force to the velocity, becoming negative. The runaway of the vibration a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f42ba05b195b678f799a46a0061554b2