1. Tapio E. J. Fabritius

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    1. Mentioned In 19 Articles

    2. Effect of solvent lamination on roll-to-roll hot-embossed PMMA microchannels evaluated by optical coherence tomography

      Effect of solvent lamination on roll-to-roll hot-embossed PMMA microchannels evaluated by optical coherence tomography
      Manufacturing of microfluidic based diagnostic devices requires small tolerances and uniform quality to guarantee reliable and repeatable test results. This work describes characterization of morphological changes that occur to a hot embossed PMMA microfluidic channel after solvent lamination with a PMMA lid. A non-contact cross-sectional analysis of the lidded microfluidic device was performed by optical coherence tomography (OCT). The solvent induced morphology change led to a porous structure in bottom ...
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    3. Quantification of cell-free layer thickness and cell distribution of blood by optical coherence tomography

      Quantification of cell-free layer thickness and cell distribution of blood by optical coherence tomography
      A high-speed optical coherence tomography (OCT) with 1 - m axial resolution was applied to assess the thickness of a cell-free layer (CFL) and a spatial distribution of red blood cells (RBC) next to the microchannel wall. The experiments were performed in vitro in a plain glass microchannel with a width of 2 mm and height of 0.2 mm. RBCs were suspended in phosphate buffered saline solution at the hematocrit ...
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    4. Characterization of ink-jet printed RGB color filters with spectral domain optical coherence tomography

      Characterization of ink-jet printed RGB color filters with spectral domain optical coherence tomography
      We present the use of sub-micron resolution optical coherence tomography (SMR SD-OCT) in volumetric characterization of ink- jet printed color filters, aimed for electronic paper display (EPD). The device used in the study is based on supercontinuum light source, Michelson interferometer centered at 600 nm and employs 400-800 nm spectral region. Spectra are acquired at a continuous rate of 140,000 per second. Color filter array of 143 mu;m ...
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    5. Sub-micron resolution high-speed spectral domain optical coherence tomography in quality inspection for printed electronics.

      Sub-micron resolution high-speed spectral domain optical coherence tomography in quality inspection for printed electronics.
      We present the use of sub-micron resolution optical coherence tomography (OCT) in quality inspection for printed electronics. The device used in the study is based on a supercontinuum light source, Michelson interferometer and high-speed spectrometer. The spectrometer in the presented spectral-domain optical coherence tomography setup (SD-OCT) is centered at 600 nm and covers a 400 nm wide spectral region ranging from 400 nm to 800 nm. Spectra were acquired at ...
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    6. Ultra-high resolution optical coherence tomography for encapsulation quality inspection

      Ultra-high resolution optical coherence tomography for encapsulation quality inspection
      We present the application of ultra-high resolution optical coherence tomography (UHR-OCT) in evaluation of thin, protective films used in printed electronics. Two types of sample were investigated: microscopy glass and organic field effect transistor (OFET) structure. Samples were coated with thin (1–3 μm) layer of parylene C polymer. Measurements were done using experimental UHR-OCT device based on a Kerr-lens mode locked Ti:sapphire femtosecond laser, photonic crystal fibre and ...
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    7. Complex Conjugate Resolved Retinal Imaging by One-micrometer Spectral Domain Optical Coherence Tomography Using an Electro-optical Phase Modulator

      Complex Conjugate Resolved Retinal Imaging by One-micrometer Spectral Domain Optical Coherence Tomography Using an Electro-optical Phase Modulator
      Full-range spectral domain optical coherence tomography (SD-OCT) with a 1-μm band light source is shown here. The phase of the reference beam is continuously stepped while the probing beam scans the sample laterally (B-scan). The two dimensional spectral interferogram obtained is processed by a Fourier transform method to obtain a complex spectrum leading to a full-range OCT image. A detailed mathematical explanation of the complex conjugate resolving method utilized is ...
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    8. Blood flow imaging at deep posterior human eye using 1 um spectral-domain optical coherence tomography

      Blood flow imaging of deep posterior eye has been demonstrated by using 1-um spectral-domain optical coherence tomography. The high contrast imaging of deep posterior eye, such as the choroid and the sclera, enables blood flow imaging of choroidal vessels and short posterior ciliary arteries. Opt ... [Proc. SPIE 7168, 716808 (2009)] published Thu Feb 19, 2009.
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    9. Full-range, high-speed, high-resolution 1 mu m spectral-domain optical coherence tomography with BM-scan method for the human posterior eye imaging

      High-speed, high-resolution full-range 1 [mu]m spectral-domain optical coherence tomography has been demonstrated. The axial resolution of 7 [mu]m and the depth range of 2.6 mm in tissue are achieved with the line rate of 46,900 Hz. The sensitivity of 98 dB is obtained with full-range imaging. These ... [Proc. SPIE 7139, 713914 (2008)] published Tue Dec 30, 2008.
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    10. 1-15 of 19 1 2 »
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  2. About Tapio E. J. Fabritius

    Tapio Fabritius received the M.S. in 2003 and Ph.D degree in 2007 from University of Oulu, Finland, both in electrical engineering. He is still continuing his carrier in University of Oulu. In 2006-2007 he was visiting researcher in Computational Optics Group in University of Tsukuba, Japan. His main research interests are related to industrial and medical applications of optical coherence tomography.