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You searched on: Author: li-anne liew Sorted by: date

Displaying records 1 to 10 of 39 records.
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1. MEMS-based Universal Fatigue-Test Technique
Published: 6/13/2013
Authors: David Thomas Read, Li-Anne Liew, Nicholas Barbosa
Abstract: We report the development and demonstration of a MEMS test instrument to perform fatigue testing on 25 µm thick aluminum 1145 H19 foil. Both the foil material and the specimen fabrication were obtained from commercial sources, separate from the fabri ...

2. MEMS-based universal fatigue test technique
Published: 8/22/2012
Authors: Li-Anne Liew, David Thomas Read, Nicholas Barbosa
Abstract: We have developed a MEMS (micro electro mechanical systems) -based method for fatigue testing of micro- to millimeter-sized specimens of any material (hence ,universal‰). The miniature, re- usable, stand-alone fatigue test frame is fabricated as a ...

3. A thickness-shear MEMS resonator employing electromechanical transduction through a coplanar waveguide
Published: 5/21/2012
Authors: Ward L Johnson, Thomas M Wallis, Pavel Kabos, Eduard Rocas, Juan C. Collado Gomez, Li-Anne Liew, Albert Davydov, Alivia Plankis, Paul R Heyliger
Abstract: The design, modeling, fabrication, and characterization of a vibrationally trapped thickness-shear MEMS resonator is presented. This device is intended to avoid various limitations of flexural MEMS resonators, including nonlinearity, clamping losses, ...

4. Wafer-Level Filling of Microfabricated Atomic Vapor Cells Based on Thin-Film Deposition and Photolysis of Cesium Azide
Published: 3/15/2007
Authors: Li-Anne Liew, John M Moreland, V Gerginov
Abstract: The thin-film deposition and photodecomposition of cesium azide are demonstrated and used to fill arrays of miniaturized atomic resonance cells with cesium and nitrogen buffer gas for chip-scale atomic-based instruments. Arrays of silicon cells are b ...

5. Chip scale atomic devices
Published: 3/13/2007
Authors: Svenja A Knappe, P Schwindt, Vladislav Gerginov, V Shah, Alan Brannon, Brad Lindseth, Li-Anne Liew, Hugh Robinson, John Moreland, Z Popovic, Leo W. Hollberg, John E Kitching
Abstract: We give an overview over our research on chip-scale atomic devices. By miniaturizing optical setups based on precision spectroscopy, we develop small atomic sensors and atomic references such as atomic clocks, atomic magnetometers, and optical wavele ...

6. A chip-scale atomic magnetometer with improved sensitivity using the M^dx^ technique
Published: 2/26/2007
Authors: P Schwindt, Brad Lindseth, Svenja A Knappe, V Shah, John E Kitching, Li-Anne Liew
Abstract: We discuss the fabrication and performance of a miniature optically pumped atomic magnetometer constructed using microfabricated components. This device measures the spin precession frequency of an alkali atom to determine the magnetic field using th ...

7. Chip-Scale Atomic Devices
Published: 6/4/2006
Authors: John E Kitching, Svenja A Knappe, P Schwindt, Ying-ju Wang, Hugh Robinson, Leo W. Hollberg, Li-Anne Liew, John Moreland, Alan Brannon, J Breitbarth, Brad Lindseth, Z Popovic, V Shah, Vladislav Gerginov, Matt Eardley
Abstract: We present an overview of recent work to develop chip-scale atomic devices such as frequency references and magnetometers. These devices take advantage of advances over the last ten years in the fields of micro electro mechanical systems (MEMS), prec ...

8. Microfabricated atomic clocks and magnetometers
Published: 5/31/2006
Authors: Svenja A Knappe, P Schwindt, Vladislav Gerginov, V Shah, Hugh Robinson, Leo W. Hollberg, John E Kitching, Li-Anne Liew, John Moreland
Abstract: We demonstrate the critical subsystems of compact atomic clocks and magnetometers based on microfabricated physics packages. The clock components have a volume below 5 cm^u3^, a fractional frequency instability below 6x10^u-10^/{tau}^u{1/2}^, and con ...

9. Chip scale atomic magnetometers
Published: 4/19/2006
Authors: John M Moreland, John E Kitching, Peter D. Schwindt, Svenja A Knappe, Li-Anne Liew, V Shah, V Gerginov, Ying-Ju Wang, Leo W. Hollberg
Abstract: We are developing a new class of sensors based on atoms confined in micro-fabricated enclosures. Recent work at the National Institute of Standards and Technology (NIST) has lead to a prototype chip scale atomic clock (CSAC) with remarkable operating ...

10. Chip-Scale Atomic Frequency References: Fabrication and Performance
Published: 12/1/2005
Authors: John E Kitching, Svenja A Knappe, Li-Anne Liew, John M Moreland, Hugh Robinson, Peter D. Schwindt, V Shah, V Gerginov, Leo W. Hollberg
Abstract: The physics package for a chip-scale atomic frequency reference was constructed and tested. The device has a total volume of 9.5 mm^u3^, dissipates 75 mW of electrical power at an ambient temperature of 45 {degree}C and has a short-term fractional fr ...

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