1. National Taiwan University

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    1. Mentioned In 101 Articles

    2. Defect detection and property evaluation of indium tin oxide conducting glass using optical coherence tomography

      Defect detection and property evaluation of indium tin oxide conducting glass using optical coherence tomography
      This study demonstrates a new approach for evaluating the properties of indium tin oxide (ITO) conducting glass and identifying defects using optical coherence tomography (OCT). A swept-source OCT system was implemented to scan the ITO conducting glass to enable two-dimensional or three-dimensional imaging. With OCT scanning, the defects can be clearly identified at various depths. Several parameters in addition to morphological information can be estimated simultaneously, including the thickness of ...
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    3. Non-invasive characterization of the domain boundary and structure properties of periodically poled ferroelectrics

      Non-invasive characterization of the domain boundary and structure properties of periodically poled ferroelectrics
      Shaping the ferroelectric domains as waveguide, grating, lens, and prism are key to the successful penetration of periodically-poled ferroelectrics on various wavelength conversion applications. The complicated structures are, however, difficult to be fully characterized, especially the unexpected index contrast at the anti-parallel domain boundaries are typical in the order of 10−4 or less. An ultrahigh resolution optical coherence tomography was employed to fully characterize the domain boundary and structure ...
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    4. Microstructural and microspectral characterization of a vertically aligned liquid crystal display panel

      Microstructural and microspectral characterization of a vertically aligned liquid crystal display panel
      e microstructural and microspectral characteristics of a vertically aligned liquid crystal display (VA-LCD) panel were obtained noninvasively for the first time. With 1 μm axial and 2 μm transversal resolutions, the cell gap profile beneath the patterned thin-film transistor of the VA-LCD panel can clearly be resolved. The thicknesses of the multiple thin-film layers and the embedded defects can also be unveiled. As far as spectral response is concerned, the ...
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    5. Bidirectionally pumped Cr^4+:YAG crystal fiber light source for optical coherence tomography

      Bidirectionally pumped Cr^4+:YAG crystal fiber light source for optical coherence tomography
      A broadband Cr4+:YAG double-clad crystal fiber light source with a collimated output power of 3.15mW was demonstrated by using a bidirectional pump scheme. The bidirectional pump scheme increased the pumping efficiency and reduced the thermal problem along the fiber. Good agreement on the output power of the broadband fluorescence was achieved between experiment and theory, which showed a peak net gain coefficient of 0.03cm−1 at the ...
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    6. Characterizing the localized surface plasmon resonance behaviors of Au nanorings and tracking their diffusion in bio-tissue with optical coherence tomography

      Characterizing the localized surface plasmon resonance behaviors of Au nanorings and tracking their diffusion in bio-tissue with optical coherence tomography
      , , , , , , Chou, , , , , The characterization results of the localized surface plasmon resonance (LSPR) of Au nanorings (NRs) with optical coherence tomography (OCT) are first demonstrated. Then, the diffusion behaviors of Au NRs in mouse liver samples tracked with OCT are shown. For such research, aqueous solutions of Au ... [Biomed. Opt. Express 1, 1059-1073 (2010)]
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    7. High-Luminance White-Light Point Source Using Ce,Sm : YAG Double-Clad Crystal Fiber

      High-Luminance White-Light Point Source Using Ce,Sm : YAG Double-Clad Crystal Fiber
      Ce and Sm ions codoped yttrium aluminum garnet (Ce,Sm : YAG) double-clad crystal fibers (DCFs) were successfully fabricated using the codrawing laser-heated pedestal growth method. At a pump wavelength of 446 nm, white-light point source was produced from a 10-$mu{hbox {m}}$-core DCF. The amplified spontaneous emissions and the residual pump resulted in a directional high brightness point source. A luminance of $4.5times 10 ^{9}~hbox{cd ...
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    8. Birefringence measurement in polarization-sensitive optical coherence tomography using differential-envelope detection method

      Birefringence measurement in polarization-sensitive optical coherence tomography using differential-envelope detection method
      In this research, we integrated two demodulating logarithmic amplifiers with one differential amplifier for use in a Mach–Zehnder interferometer so as to obtain a two-channel polarization-sensitive optical coherence tomography system. Birefringence signals can be acquired using this system along with a differential-envelope detection method. Because the two orthogonal polarizations are common-path propagation, common noise originating from background fluctuations or multiple scattering in turbid media can be reduced to improve ...
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    9. Feature Of The Week 4/4/10: Ce3+:YAG double-clad crystal fiber based optical coherence tomography on fish cornea

      Feature Of The Week 4/4/10: Ce3+:YAG double-clad crystal fiber based optical coherence tomography on fish cornea
      ...oss section of the crystal environment, and effectively collect the ASE. With the collaboration between the National Taiwan University and the Academia Sinica, a Ce3+:YAG DCF based visible emission was used as the ligh...
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    10. Intra-examiner repeatability and agreement of corneal pachymetry map measurement by time-domain and Fourier-domain optical coherence tomography

      Intra-examiner repeatability and agreement of corneal pachymetry map measurement by time-domain and Fourier-domain optical coherence tomography
      ...A 94143–0730, USA (2) Department of Ophthalmology, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan Received: 23 November 2009 Revised: 1 March 2010 Accepted: 5 Marc...
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    11. Ce^3+:YAG double-clad crystal-fiber-based optical coherence tomography on fish cornea

      Ce^3+:YAG double-clad crystal-fiber-based optical coherence tomography on fish cornea
      A Ce3+:YAG double-clad crystal fiber (DCF) visible emission was used as the light source for optical coherence tomography (OCT). The visible emission was produced from a 10 μm core DCF pumped by a diode laser. The broadband emission and short central wavelength of this light source enabled the realization of 1.5 μm axial resolution in air. The relatively clean spectrum reduced the side lobe of its point-spread function ...
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    12. Clinical diagnosis of oral submucous fibrosis with optical coherence tomography

      A swept-source optical coherence tomography (SS-OCT) system with a specially designed probe is built for clinical scanning of oral submucous fibrosis (OSF) patients. By analysing 44 OSF cases of SS-OCT scanning results, two indicators, including epithelium (EP) thickness and standard deviation (SD) of A-mode scan intensity in the laminar propria (LP) layer, are found useful for real-time OSF diagnosis. Statistics show that sensitivity and specificity of LP SD can reach ...
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    13. 76-90 of 101 « 1 2 3 4 5 6 7 »
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  2. About National Taiwan University

    National Taiwan University

    National Taiwan University main campus is set upon 1,086,167 square meters in Taipei's Daan District. In addition, the university has 6 other campuses in Taiwan, occupying a total of 345,830,000 square meters. NTU is the top ranking University by scientific paper performance in Taiwan and ranked the 102nd in the world. Currently the University consists of 11 colleges, 54 departments, 96 graduate institutes and 4 research centers and offers diplomas in over 100 fields of study. NTU was founded in 1928 by the Japanese during the Japanese colonial era and was then known as the Taihoku (Taipei) Imperial University. After World War II and Taiwan's retrocession to Chinese sovereignty, the Taiwan government resumed the admnistration of Taihoku University and reorganized and renamed it National Taiwan University on November 15, 1945.