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  1. No Access

    Article

    Sorption Behavior of Uranium(VI) on a Biotite Mineral

    Biotite has the most important role for the sorption of radionuclides in granitic rocks. Experiments on the sorption of uranium (VI) on biotite were conducted to understand the fundamental controls on uranium ...

    K. Idemitsu, K. Obata, H. Furuya, Y. Inagaki in MRS Online Proceedings Library (1994)

  2. No Access

    Article

    Roles of Surface Termination in Photoluminescence Mechanisms of Porous Si

    The relationship between the oxidation states and PL properties and the effects of H/O termination exchange on the PL properties of PS have been investigated using synchrotron radiation photoemission spectrosc...

    Y. Suda, K. Obata, A. Kumagai, N. Koshida in MRS Online Proceedings Library (1996)

  3. No Access

    Article

    TiN growth on Si by hybrid radical beam PLD

    High-quality (good crystallinity and stoichiometry) titanium nitride (TiN) thin films were grown on Si(100) substrates by pulsed laser deposition (PLD) using a high-purity titanium target (99.99%) and nitroge...

    K. Obata, K. Sugioka, K. Toyoda, H. Takai, K. Midorikawa in Applied Physics A (1999)

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    Article

    Influence of laser fluence and irradiation timing of F2 laser on ablation properties of fused silica in F2-KrF excimer laser multi-wavelength excitation process

    A collinear irradiation system of F2 and KrF excimer lasers for high-quality and high-efficiency ablation of hard materials by the F2 and KrF excimer lasers’ multi-wavelength excitation process has been developed...

    K. Obata, K. Sugioka, T. Akane, N. Aoki, K. Toyoda, K. Midorikawa in Applied Physics A (2001)

  5. No Access

    Article

    Hybrid laser processing for microfabrication of glass

    Hybrid laser processing for the precision microfabrication of glass materials, in which the interaction of a conventional pulsed laser beam and a medium on the material surface leads to effective ablation and ...

    K. Sugioka, K. Obata, M.H. Hong, D.J. Wu, L.L. Wong, Y.F. Lu… in Applied Physics A (2003)

  6. No Access

    Article

    Deep etching of epitaxial gallium nitride film by multiwavelength excitation process using F2 and KrF excimer lasers

    The deep etching of GaN(0001) thin films epitaxially grown on Al2O3(0001) has been investigated by laser ablation using F2 and KrF excimer lasers. The simultaneous irradiation with F2 and KrF excimer lasers marke...

    K. Obata, K. Sugioka, K. Midorikawa, T. Inamura, H. Takai in Applied Physics A (2006)

  7. No Access

    Article

    Fabrication of microchip based on UV transparent polymer for DNA electrophoresis by F2 laser ablation

    A microchip for DNA electrophoresis made of a new UV transparent polymer material (CYTOP) whose absorption edge is much shorter than 190 nm has been fabricated by F2 laser ablation. F2 laser ablation achieves hig...

    K. Obata, K. Sugioka, N. Shimazawa, K. Midorikawa in Applied Physics A (2006)