Elevated microresonators for investigating the effect of air damping

2006 ◽  
Author(s):  
Lijie Li ◽  
G. Brown ◽  
D. Uttamchandani
Keyword(s):  
Air Damping

LaCoste and Romberg straight‐line gravity meter

Geophysics ◽  
1983 ◽  
Vol 48 (5) ◽  
pp. 606-610 ◽  
Author(s):  
Lucien LaCoste
Keyword(s):  
Cross Coupling ◽  
Coupling Effects ◽  
New Model ◽  
Silicone Fluid ◽  
Air Damping ◽  
Straight Line ◽  
New Instrument ◽  
Spring Suspension ◽  
Fluid Damping ◽  
Rough Handling

The LaCoste and Romberg straight‐line gravity meter uses a new suspension in which the movable element moves vertically in a straight line rather than in an arc of a circle (LaCoste, 1973a). It was designed primarily for shipboard operation to avoid effects from cross coupling between various ship accelerations, thereby making it unnecessary to correct for such effects. The straight‐line suspension is a modification of the zero length spring suspension used in all LaCoste and Romberg gravity meters. The new model also uses silicone fluid damping rather than the air damping used in earlier models. Its main advantages over the older models appear to be: it is (1) free of cross‐coupling effects, (2) easier to build and adjust, (3) less subject to slight degradation in performance from rough handling, and (4) less sensitive to ship vibrations. In spite of the above advantages it is doubtful whether the new model will give substantially better accuracy than the previous models, if the previous models are kept in good operating condition by making occasional crosscorrelation analyses (LaCoste, 1973b). Valliant (1983, this issue) describes sea tests of the new instrument.

High Speed Focus Control MEMS Mirror With Controlled Air Damping for Vital Microscopy

2013 ◽  
Vol 22 (4) ◽  
pp. 938-948 ◽  
Author(s):  
Mohammad J. Moghimi ◽  
Krishna N. Chattergoon ◽  
Chris R. Wilson ◽  
David L. Dickensheets
Keyword(s):  
High Speed ◽  
Air Damping ◽  
Vital Microscopy

scholarly journals Shock reliability enhancement for MEMS vibration energy harvesters with nonlinear air damping as a soft stopper

2017 ◽  
Vol 27 (10) ◽  
pp. 104003 ◽  
Author(s):  
Shao-Tuan Chen ◽  
Sijun Du ◽  
Emmanuelle Arroyo ◽  
Yu Jia ◽  
Ashwin Seshia
Keyword(s):  
Vibration Energy ◽  
Energy Harvesters ◽  
Air Damping ◽  
Reliability Enhancement

Design and Simulation of Capacitive Micromechaned Gyroscope

2011 ◽  
Vol 211-212 ◽  
pp. 909-913
Author(s):  
Yun Bo Shi ◽  
Xing Juan Zhao ◽  
Jun Tang ◽  
Jun Liu ◽  
Rui Rong Wang
Keyword(s):  
Atmospheric Pressure ◽  
Simulation Analysis ◽  
High Sensitivity ◽  
Drive Mode ◽  
Close Match ◽  
High Q ◽  
Air Damping ◽  
Large Numbers ◽  
Detection Mode ◽  
Micromachined Gyroscope

By researching and investigating the structure of capacitive gyroscopes, A novel capacitive micromachined gyroscope is proposed and the structure is designed. The method of electrostatic comber drive, capacitive detection of bar structure is used for the structure, and these make the gyroscope high sensitivity. The main air damping of the drive mode and detection mode is slide film damping, it is possible to make the gyroscope achieve high Q-values at atmospheric pressure. The decoupled gyroscope is designed, too. By large numbers of simulation analysis， frequencies of the first six steps mode are gained, nature frequencies of drive mode and sense mode of gyroscope are a close match, and rationality of the structure is validated. At last, the structure encapsulated is presented.

An Impact-Coupled MEMS Electrostatic Kinetic Energy Harvester and Its Predictive Model Taking Nonlinear Air Damping Effect Into Account

2018 ◽  
Vol 27 (6) ◽  
pp. 1041-1053 ◽  
Author(s):  
Yingxian Lu ◽  
Jerome Juillard ◽  
Francesco Cottone ◽  
Dimitri Galayko ◽  
Philippe Basset
Keyword(s):  
Kinetic Energy ◽  
Predictive Model ◽  
Energy Harvester ◽  
Damping Effect ◽  
Air Damping

A monolithic silicon accelerometer with integral air damping and overrange protection

2003 ◽  
Author(s):  
P.W. Barth ◽  
F. Pourahmadi ◽  
R. Mayer ◽  
J. Poydock ◽  
K. Petersen
Keyword(s):  
Air Damping

Air damping of high performance resonating micro-mirrors with angular vertical comb-drive actuators

2019 ◽  
Author(s):  
Russell Farrugia ◽  
Barnaby Portelli ◽  
Ivan Grech ◽  
Duncan Camilleri ◽  
Owen Casha ◽  
...  
Keyword(s):  
High Performance ◽  
Comb Drive ◽  
Air Damping

Modelling and validation of air damping in perforated gold and silicon MEMS plates

2009 ◽  
Vol 20 (1) ◽  
pp. 015010 ◽  
Author(s):  
Giorgio De Pasquale ◽  
Timo Veijola ◽  
Aurelio Somà
Keyword(s):  
Air Damping
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