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You searched on: Author: thomas lebrun

Displaying records 11 to 19.
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11. Characterization of Optical Traps Using On-Line Estimation Methods
Published: 8/26/2005
Authors: Jason John Gorman, Thomas W LeBrun, et al
Abstract: System identification methods are presented for the estimation of the characteristic frequency of an optically trapped particle. These methods are more amenable to automated on-line measurements and are believed to be less prone to erroneous results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822379

12. Development of Multiple Beam Optical Tweezers
Published: 6/1/2005
Authors: Dongjin Lee, Thomas W LeBrun, Arvind Kumar Balijepalli, Jason John Gorman, Cedric Victor Lucien Gagnon, Daehie Hong, Esther H Chang
Abstract: This paper presents the design of a multiple beam optical tweezers instrument used for manipulating micro/nano-sized components. The basic equations used in designing the optical tweezers are derived and the stable and time-sharing multiple beam opti ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822377

13. Virtual Environment for Manipulating Microscopic Particles with Optical Tweezer
Published: 7/1/2003
Authors: Thomas W LeBrun, Kevin W Lyons, Yong-Gu Lee
Abstract: In this paper, we use virtual reality techniques to define an intuitive interface to a nanoscale manipulation device. This device utilizes optical methods to focus laser light to trap and reposition nano-to-microscopic particles. The underlying physi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822040

14. Virtual Environment for Manipulating Microscopic Particles with Optical Tweezer
Published: 6/1/2003
Authors: Yong-Gu Lee, Kevin W Lyons, Thomas W LeBrun
Abstract: In this paper, we use virtual reality techniques to define an intuitive interface to a nanoscale manipulation device. This device utilizes optical methods to focus laser light to trap and reposition nano-to-microscopic particles. The underlying physi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822011

15. Micro-Mirror Array Control of Optical Tweezer Trapping Beams
Published: 8/28/2002
Authors: Nicholas G Dagalakis, Thomas W LeBrun, J Lippiatt
Abstract: The efficiency of optical tweezer manufacturing depends on the number of trapping beams available. Micro optics technology offers the opportunity to significantly increase the number of trapping beams without a significant increase of the cost or siz ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821817

16. X-ray Scattering and Fluorescence From Atoms and Molecules
Published: 1/1/2000
Authors: S H Southworth, L Young, E P Kanter, Thomas W LeBrun
Abstract: Fundamental understanding of x-ray interactions with atoms and molecules provides a basis for applying x-ray methods to complex materials, such as structural determinations by x-ray diffraction and extended x-ray absorption fine structure. Compton sc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820950

17. Radiationless Resonant Raman Scattering at the Ar K Edge
Published: 1/1/1999
Authors: Thomas W LeBrun, S H Southworth, G B Armen, M A MacDonald, Y Azuma
Abstract: Partial cross sections for Ar K-LZL3(1 D2)np, n=4 and 5 spectator Auger states excited by x-ray absorption across the K-edge were measured and compared with calculations based on the theory or radiationless resonant Raman scattering. Core relaxation ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820935

18. Measurement and accumulation of electric charge on a single dielectric particle trapped in air
Published: Date unknown
Authors: Thomas W LeBrun, Haesung Park
Abstract: Normally occurring charges on small particles provide a means to control the motion of the particles. Using a piezoelectric- based resonator to launch microparticles into a trap, we can vary particle-surface interactions to transfer charge to th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=920305

19. Optical trapping of selected dielectric microparticles in air
Published: Date unknown
Authors: Haesung Park, Thomas W LeBrun
Abstract: We demonstrate a method to trap a selected dielectric microparticle in air using radiation pressure from a single-beam gradient optical trap. Randomly scattered dielectric microparticles adhered to a glass substrate are momentarily detached using ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=920854



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