نتایج جستجو برای: nano beam resonators

تعداد نتایج: 170061  

2014
Yin Zhang Yun Liu

In the application of a micro-/nano-mechanical resonator, the position of an accreted particle and the resonant frequencies are measured by two different physical systems. Detecting the particle position sometimes can be extremely difficult or even impossible, especially when the particle is as small as an atom or a molecule. Using the resonant frequencies to determine the mass and position of ...

2006
Weibin Zhang Kimberly Turner

This research systematically investigates the fluid damping for micromachined beam-type resonators with high resonant frequencies. The work s aimed to find a general fluid damping law which can quantitatively be used as a design tool for the resonance-based micro sensors by accurately redicting the quality factor for resonators operated in air or liquid. Micro-cantilevers with different dimensi...

2004
Kyungsuk Yum Zhaoyu Wang Abhijit P. Suryavanshi Min-Feng Yu

The damping effect in the nanoscale mechanical beam resonators operated under ambient conditions was studied. Experimental measurement of the viscous air damping in the nanowire cantilever resonators was carried out using the electric-field-induced resonance method; and a theoretical model, which accounts for the effects of dimension and material property of the nanowires and the air viscosity ...

Journal: :Optics express 2012
Sun-Goo Lee Seong-Han Kim Teun-Teun Kim Jae-Eun Kim Hae Yong Park Chul-Sik Kee

The resonant transmission of self-collimated beams through zigzag-box resonators is demonstrated experimentally and numerically. Numerical simulations show that the flat-wavefront and the width of the beam are well maintained after passing through zigzag-box resonators because the up and the down zigzag-sides prevent the beam from spreading out and the wavefront is perfectly reconstructed by th...

2017
Mariazel Maqueda Lopez Emanuele Andrea Casu Montserrat Fernandez-Bolanos

This paper reports the design and characterization of partially-filled-gap capacitive MEMS resonators for distributed mass sensing applications. By filling the gap with HfO2, the coupling coefficient between electrode-resonator increases by ×6.67 times and the motional resistance decreases by ×12 times in comparison with its counterpart in air. An improvement by a factor of ×5.6 in the Signal-T...

2003
Mustafa U. Demirci

Polysilicon free-free beam micromechanical resonators based on MEMS technology operating in second and third-mode flexural vibrations have been demonstrated at frequencies as high as 102 MHz with Q’s on the order of 11,500. Via strategic placement of electrodes, and careful determination of the exact support beam attachment locations that minimize anchor loss, these new resonators actually exhi...

2014
R. Zhu G. K. Hu C. T. Sun G. L. Huang

One of the significant engineering applications of the elastic metamaterial (EMM) is for low-frequency vibration attenuation because of its unusual low-frequency bandgap behavior. However, the forbidden gap from many existing EMMs is usually of narrow bandwidth which limits their practical engineering applications. In this paper, a chirallattice-based EMM beamwith multiple embedded local resona...

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