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  1. Article

    Open Access

    Dually modulated photonic crystals enabling high-power high-beam-quality two-dimensional beam scanning lasers

    Mechanical-free, high-power, high-beam-quality two-dimensional (2D) beam scanning lasers are in high demand for various applications including sensing systems for smart mobility, object recognition systems, an...

    Ryoichi Sakata, Kenji Ishizaki, Menaka De Zoysa, Shin Fukuhara… in Nature Communications (2020)

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    Article

    Double-lattice photonic-crystal resonators enabling high-brightness semiconductor lasers with symmetric narrow-divergence beams

    Achieving high brightness (where brightness is defined as optical power per unit area per unit solid angle) in semiconductor lasers is important for various applications, including direct-laser processing and ...

    Masahiro Yoshida, Menaka De Zoysa, Kenji Ishizaki, Yoshinori Tanaka… in Nature Materials (2019)

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    Article

    Electrochemical Selective Detection of Uric Acid Using a Copper-modified Carbon Electrode

    The uric acid (UA) level in (human) serum is an important indicator of several diseases; however, its electrochemical detection is difficult because the oxidation potentials of UA and ascorbic acid (AA) are ve...

    Hiroaki Sakamoto, Ranko Hatsuda, Kazuhiro Miyamura, Haruki Shiraishi… in Analytical Sciences (2011)

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    Article

    Designing of a Si-MEMS device with an integrated skeletal muscle cell-based bio-actuator

    With the aim of designing a mechanical drug delivery system involving a bio-actuator, we fabricated a Micro Electro Mechanical Systems (MEMS) device that can be driven through contraction of skeletal muscle ce...

    Hideaki Fujita, Van Thanh Dau, Kazunori Shimizu, Ranko Hatsuda… in Biomedical Microdevices (2011)