Now showing items 1-9 of 9

    • A versatile diffractive maskless lithography for single-shot and serial microfabrication. 

      Jenness, NJ; Hill, RT; Hucknall, A; Chilkoti, A; Clark, RL (Opt Express, 2010-05-24)
      We demonstrate a diffractive maskless lithographic system that is capable of rapidly performing both serial and single-shot micropatterning. Utilizing the diffractive properties of phase holograms displayed on a spatial ...
    • Are component positioning and prosthesis size associated with hip resurfacing failure? 

      Johnson, AJ; Marker, DR; Mont, MA; Seyler, Thorsten M; Zywiel, MG (BMC Musculoskelet Disord, 2010-10-02)
      BACKGROUND: Recent studies suggest that there is a learning curve for metal-on-metal hip resurfacing. The purpose of this study was to assess whether implant positioning changed with surgeon experience and whether positioning ...
    • Coded aperture compressive temporal imaging. 

      Brady, David J; Carin, Lawrence; Kittle, D; Liao, X; Llull, P; Sapiro, Guillermo; Yang, J; ... (8 authors) (Opt Express, 2013-05-06)
      We use mechanical translation of a coded aperture for code division multiple access compression of video. We discuss the compressed video's temporal resolution and present experimental results for reconstructions of > 10 ...
    • Delivery efficiency of an Elekta linac under gated operation. 

      Cui, Guoqiang; Housley, David J; Chen, Fan; Mehta, Vivek K; Shepard, David M (Journal of applied clinical medical physics, 2014-09-08)
      In this study, we have characterized the efficiency of an Elekta linac in the delivery of gated radiotherapy. We have explored techniques to reduce the beam-on delay and to improve the delivery efficiency, and have investigated ...
    • High-fidelity, broadband stimulated-Brillouin-scattering-based slow light using fast noise modulation. 

      Gauthier, Daniel J; Lee, M; Neifeld, MA; Zhu, Y (Opt Express, 2011-01-17)
      We demonstrate a 5-GHz-broadband tunable slow-light device based on stimulated Brillouin scattering in a standard highly-nonlinear optical fiber pumped by a noise-current-modulated laser beam. The noisemodulation waveform ...
    • In situ synthesis of DNA microarray on functionalized cyclic olefin copolymer substrate. 

      LaBean, Thomas; Ma, KS; Marchi, AN; Saaem, I; Tian, J (ACS Appl Mater Interfaces, 2010-02)
      Thermoplastic materials such as cyclic-olefin copolymers (COC) provide a versatile and cost-effective alternative to the traditional glass or silicon substrate for rapid prototyping and industrial scale fabrication ...
    • Instrument independent diffuse reflectance spectroscopy. 

      Fu, HL; Ramanujam, Nimmi; Yu, Bing (J Biomed Opt, 2011-01)
      Diffuse reflectance spectroscopy with a fiber optic probe is a powerful tool for quantitative tissue characterization and disease diagnosis. Significant systematic errors can arise in the measured reflectance spectra and ...
    • Parallel on-axis holographic phase microscopy of biological cells and unicellular microorganism dynamics. 

      Ehlers, MD; Newpher, Thomas Mark; Shaked, NT; Wax, A (Appl Opt, 2010-05-20)
      We apply a wide-field quantitative phase microscopy technique based on parallel two-step phase-shifting on-axis interferometry to visualize live biological cells and microorganism dynamics. The parallel on-axis holographic ...
    • Slow light with a swept-frequency source. 

      Gauthier, Daniel J; Wang, J; Zhang, R; Zhu, Y (Opt Express, 2010-12-20)
      ct: We introduce a new concept for stimulated-Brillouin-scattering-based slow light in optical fibers that is applicable for broadly-tunable frequency-swept sources. It allows slow light to be achieved, in principle, over ...