1. National Taiwan University

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    1. Mentioned In 97 Articles

    2. Feature Of The Week 08/31/2018: Spectroscopic Characterization of Si/Mo Thin-film Stack at Extreme Ultraviolet Range

      Feature Of The Week 08/31/2018: Spectroscopic Characterization of Si/Mo Thin-film Stack at Extreme Ultraviolet Range
      ...imaging on organelles in the future. For more information see recent Article . Courtesy Sheng-Lung Huang from National Taiwan University . Using extreme ultraviolet (EUV) radiation for nanoscale imaging has recently seen...
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    3. Quantifying scattering coefficient for multiple scattering effect by combining optical coherence tomography with finite-difference time-domain simulation method

      Quantifying scattering coefficient for multiple scattering effect by combining optical coherence tomography with finite-difference time-domain simulation method
      In optical coherence tomography (OCT) systems, to precisely obtain the scattering properties of samples is an essential issue in diagnostic applications. Especially with a higher density turbid medium, the light interferes among the adjacent scatters. Combining an OCT experiment with the finite-difference time-domain simulation method, the multiple scattering effect is shown to affect the scattering properties of medium depending on the interparticle spacing. The far-field scattering phase function of scatters ...
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    4. In vivo detection of UV-induced acute skin effects using optical coherence tomography

      In vivo detection of UV-induced acute skin effects using optical coherence tomography
      Ultraviolet (UV) rays have been identified as a carcinogen with long-term irradiation and are an important risk factor for skin cancer. Here, we report the use of optical coherence tomography/optical coherence tomography angiography (OCT/OCTA) to study acute UV-induced effects on skin in vivo . To understand the relationship between the acute effects and irradiated UV power density, three groups were irradiated with different power densities in our experiments. Furthermore ...
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    5. Spectroscopic characterization of Si/Mo thin-film stack at extreme ultraviolet range

      Spectroscopic characterization of Si/Mo thin-film stack at extreme ultraviolet range
      A noninvasive method for characterizing Si/Mo thin-film stack thickness and its complex transfer function using common-path optical coherence tomography is proposed, analyzed, and experimentally demonstrated. A laser-produced plasma (LPP)-based extreme ultraviolet (EUV) source was excited by a four-stage nanosecond Yb:fiber laser amplifier with a pulse energy of 1.01 mJ. The tabletop LPP EUV source was compact and stable for generating the EUV interference fringes. The measured ...
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    6. Extracting Blood Vessels From Full-Field OCT Data of Human Skin by Short-Time RPCA

      Extracting Blood Vessels From Full-Field OCT Data of Human Skin by Short-Time RPCA
      Recent advances in optical coherence tomography (OCT) lead to the development of OCT angiography to provide additional helpful information for diagnosis of diseases like basal cell carcinoma. In this paper, we investigate how to extract blood vessels of human skin from full-field OCT (FF-OCT) data using the robust principal component analysis (RPCA) technique. Specifically, we propose a short-time RPCA method that divides the FF-OCT data into segments and decomposes each ...
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    7. Optical Coherence Tomography Angiography for Assessment of the 3-Dimensional Structures of Polypoidal Choroidal Vasculopathy

      Optical Coherence Tomography Angiography for Assessment of the 3-Dimensional Structures of Polypoidal Choroidal Vasculopathy
      Importance Investigating the quantitative 3-dimensional (3-D) anatomy of polypoidal complex is important for a better understanding of the pathogenesis of polypoidal choroidal vasculopathy (PCV). Objective To quantitatively evaluate the 3-D characteristics of polypoidal structures, branching vascular networks (BVNs), and origin of PCV using optical coherence tomography angiography (OCTA) and multiple image systems. Design, Setting, and Participants A prospective, observational study was conducted in 47 consecutive Taiwanese patients (47 eyes) from ...
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    8. Noninvasive structural and microvascular anatomy of oral mucosae using handheld optical coherence tomography

      Noninvasive structural and microvascular anatomy of oral mucosae using handheld optical coherence tomography
      In this study, we demonstrated the feasibility of using a handheld optical coherence tomography (OCT) for in vivo visualizations of the microstructural and microvascular features of various oral mucosal types. To scan arbitrary locations of the oral mucosa, a scanning probe was developed, composed of a probe body fabricated by a 3D printer, miniaturized two-axis galvanometer, relay lenses, and reflective prism. With a 3D printing technique, the probe weight and ...
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    9. Size-Dependent Multiple-Scattering Effects of Mesoporous TiO2 Beads Distinguished by Optical Coherence Tomography

      Size-Dependent Multiple-Scattering Effects of Mesoporous TiO2 Beads Distinguished by Optical Coherence Tomography
      In this study, we propose a new analysis method using optical coherence tomography to further use the diffusive reflectance measurement to quantify the contribution of the size dependent multiple scattering effects of mesoporous TiO2 beads. The diffusive reflectance results from the complex interactions between light and the scattering particles, and influences the slopes of the associated depth dependent A-scan profiles, which can be fitted based on the extended Huygens-Fresnel model ...
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    10. Three-dimensional optical coherence tomography apparatus and its application

      Three-dimensional optical coherence tomography apparatus and its application
      Provided herein are devices and systems that apply full-field optical coherence tomography (OCT) technology to three-dimensional skin tissue imaging. A special designed Mirau type objective and an optical microscope module allowing both OCT mode and orthogonal polarization spectral imaging (OPSI) mode are disclosed.
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    11. Using Optical Coherence Tomography to Identify of Oral Mucosae with 3D-Printing Probe

      Using Optical Coherence Tomography to Identify of Oral Mucosae with 3D-Printing Probe
      Biomedical materials have different optical properties (e.g. absorption) for different wavelengths. Therefore, probing biomedical materials with multiple wavelengths not only can get in-depth understanding of the detected biomedical materials but also can differentiate the detected biomedical materials. To achieve this purpose, in this conference paper, we present our initial results of building up a portable multiple-wavelength biomedical sensing system. At this initial phase, we assembled this kind of system ...
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    12. Age and axial length on peripapillary retinal nerve fiber layer thickness measured by optical coherence tomography in nonglaucomatous Taiwanese participants

      Age and axial length on peripapillary retinal nerve fiber layer thickness measured by optical coherence tomography in nonglaucomatous Taiwanese participants
      ... and its Supporting Information files. Funding: This research (HcH -2-990001) was supported with the grant of National Taiwan University Hospital, Hsin Chu Branch. The funder had no role in study design, data collection ...
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    13. Segmentation of nucleus and cytoplasm of a single cell in three-dimensional tomogram using optical coherence tomography

      Segmentation of nucleus and cytoplasm of a single cell in three-dimensional tomogram using optical coherence tomography
      A random rayburst sampling (RRBS) framework was developed to detect the nucleus and cell membrane boundaries in three-dimensional (3-D) space. Raw images were acquired through a full-field optical coherence tomography system with submicron resolutioni.e., 0.8 m 0.8m in lateral and 0.9 m 0.9m in axial directions. The near-isometric resolution enables 3-D segmentation of a nucleus and cell membrane for determining the volumetric nuclear-to-cytoplasmic (N/C ...
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    14. Evaluation of Laser-Assisted Trans-Nail Drug Delivery with Optical Coherence Tomography

      Evaluation of Laser-Assisted Trans-Nail Drug Delivery with Optical Coherence Tomography
      The nail provides a functional protection to the fingertips and surrounding tissue from external injuries. The nail plate consists of three layers including dorsal, intermediate, and ventral layers. The dorsal layer consists of compact, hard keratins, limiting topical drug delivery through the nail. In this study, we investigate the application of fractional CO 2 laser that produces arrays of microthermal ablation zones (MAZs) to facilitate drug delivery in the nails ...
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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.