نتایج جستجو برای: cantilevers

تعداد نتایج: 1221  

Journal: :FES Journal of Engineering Sciences 2021

Cantilevers are a part of our life, they everywhere: bridg–es, building’s balconies, traffic signs, car parking shades even the aircraft’s wings. The long cantilevers buildings always present as big challenge to structural engineers in their practice life. behavior these depends on several factors, such rigidity slab, columns or walls, span continuity... etc. But real dilemma lies economical ch...

Precision of nano-metric operations is an important issue in nano-engineering studies. Several operative parameters might affect the quality of results. The parameters of the nano world are significant but not entirely controllable. However, the geometrical and mechanical properties of micro cantilevers are completely controllable. So, controlling the sensitivity of resulting image through t la...

Journal: :Beilstein Journal of Nanotechnology 2018

Journal: :SciPost physics 2021

We report a thermo-optical bistability observed in silicon micro-cantilevers irradiated by laser beam with mW powers: reflectivity, transmissivity, absorption, and temperature can change factor of two between stable states for the same input power. The dependency absorption at origin results from interferences internal reflections cantilever thickness, acting as lossy Fabry-P\'erot cavity. A th...

Journal: :International journal of recent technology and engineering 2023

MEMS are used in acceleration, flow, pressure and force sensing applications on the micro macro levels. The fundamental part of every sensor is transducer which converts measurend intrest into interpretable output signal. most prominent piezoresistive cantilever translates any signal an electrical signal.This paper presents deisgn fabrication U shaped with enhanced sensitivity stiffness gives b...

Journal: :Optics express 2015
Eui-Young Song Jaebum Cho Hwi Kim Woo Young Choi Byoungho Lee

A complex modulation structure of surface plasmon polaritons using double bi-material cantilevers is proposed. It is shown with numerical analysis that the thermally controlled mechanical actuation of double bi-material cantilevers can modulate the amplitude and phase of surface plasmon polaritons across a full complex modulation range independently and simultaneously. The complex modulation st...

2017
Cécile Fuinel Fabrice Mathieu Bernard Legrand

We show that nanometer-scale dielectric thin films can act as efficient electromechanical transducers to simultaneously drive and sense the vibration of the first flexural mode of micro/nano-cantilevers. Here, 16 μm-long, 5 μm-wide and 350 nm-thick cantilevers are actuated by a 15 nm-thick silicon nitride layer, and electrically detected by charge measurement at megahertz frequencies. The displ...

Journal: :CoRR 2007
M. El Ghorba Nicolas André S. Sobieski J. P. Raskin

Three-dimensional MEMS magnetometers with use of residual stresses in thin multilayers cantilevers are presented. Half-loop cantilevers based on Lorentz-force deflection convert magnetic flux in V ∆ changes, thanks to piezoresistive transducers mounted in Wheatstone bridge. Magnetic field in the order of 10 Gauss was measured with a sensitivity of 0.015 mV/Gauss. A Finite Element Model of the d...

2010
Tao Chen Debby P. Chang Ting Liu Ramya Desikan Ram Datar Thomas Thundat R€udiger Berger Stefan Zauscher

Glucose responsive polymer brushes were synthesized on gold substrates and microcantilever arrays. The response properties of these brushes were evaluated by exposing them to different glucose concentrations for a range of pH values. This work demonstrates the potential for polymer brush-functionalized micromechanical cantilevers as glucose detectors. Furthermore, the work demonstrates that sti...

2015
Maja Dukic Jonathan D. Adams Georg E. Fantner

Optical beam deflection (OBD) is the most prevalent method for measuring cantilever deflections in atomic force microscopy (AFM), mainly due to its excellent noise performance. In contrast, piezoresistive strain-sensing techniques provide benefits over OBD in readout size and the ability to image in light-sensitive or opaque environments, but traditionally have worse noise performance. Miniatur...

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