Now showing items 1-6 of 6

    • Circuit topology and control principle for a first magnetic stimulator with fully controllable waveform. 

      Goetz, SM; Pfaeffl, M; Huber, J; Singer, M; Marquardt, R; Weyh, T (Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference, 2012-01)
      Magnetic stimulation pulse sources are very inflexible high-power devices. The incorporated circuit topology is usually limited to a single pulse type. However, experimental and theoretical work shows that more freedom in ...
    • Design and in vivo evaluation of more efficient and selective deep brain stimulation electrodes. 

      Howell, Bryan; Huynh, Brian; Grill, Warren M (Journal of neural engineering, 2015-08)
      <h4>Objective</h4>Deep brain stimulation (DBS) is an effective treatment for movement disorders and a promising therapy for treating epilepsy and psychiatric disorders. Despite its clinical success, the efficiency and selectivity ...
    • High-fidelity, broadband stimulated-Brillouin-scattering-based slow light using fast noise modulation. 

      Zhu, Yunhui; Lee, Myungjun; Neifeld, Mark A; Gauthier, Daniel J (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 ...
    • Instrument independent diffuse reflectance spectroscopy. 

      Yu, Bing; Fu, Henry L; Ramanujam, Nirmala (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. 

      Zhang, Rui; Zhu, Yunhui; Wang, Jing; Gauthier, Daniel J (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 ...