Search Results - "Yatsui, Takashi"

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  1. 1

    Recent improvement of silicon absorption in opto-electric devices by Yatsui Takashi

    Published in Opto-Electronic Advances (01-01-2019)
    “…Silicon dominates the contemporary electronic industry. However, being an indirect band-gap material, it is a poor absorber of light, which decreases the…”
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    Journal Article
  2. 2

    Magnetometer with nitrogen-vacancy center in a bulk diamond for detecting magnetic nanoparticles in biomedical applications by Kuwahata, Akihiro, Kitaizumi, Takahiro, Saichi, Kota, Sato, Takumi, Igarashi, Ryuji, Ohshima, Takeshi, Masuyama, Yuta, Iwasaki, Takayuki, Hatano, Mutsuko, Jelezko, Fedor, Kusakabe, Moriaki, Yatsui, Takashi, Sekino, Masaki

    Published in Scientific reports (12-02-2020)
    “…We developed a novel magnetometer that employs negatively charged nitrogen-vacancy (NV − ) centers in diamond, to detect the magnetic field generated by…”
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    Journal Article
  3. 3

    Synthesis of silver nanostructure on gold nanoparticle using near field assisted second harmonic generation by Yatsui, Takashi, Brandenburg, Felix, Leuschel, Benjamin, Soppera, Olivier

    Published in Scientific reports (11-03-2021)
    “…By using gold (Au) nanoparticles (NPs) as an optical near-field source under far-field illumination in combination with a silver (Ag) ion solution containing a…”
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  4. 4

    Design of an ultra-sensitive and miniaturized diamond NV magnetometer based on a nanocavity structure by Katsumi, Ryota, Sekino, Masaki, Yatsui, Takashi

    Published in Japanese Journal of Applied Physics (01-08-2022)
    “…Abstract The ensemble of nitrogen-vacancy (NV) centers in diamond allows for the potential realization of the sensitive magnetometers by leveraging their…”
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  5. 5

    High‐Q and Tailorable Fano Resonances in a One‐Dimensional Metal‐Optical Tamm State Structure: From a Narrowband Perfect Absorber to a Narrowband Perfect Reflector by Wang, Zhiyu, Ho, Ya‐Lun, Cao, Tun, Yatsui, Takashi, Delaunay, Jean‐Jacques

    Published in Advanced functional materials (01-06-2021)
    “…Fano resonances giving rise to a rich variety of asymmetric spectral shapes have been investigated in optical nanostructures with multidimensional…”
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  6. 6

    Two-photon absorption induced by electric field gradient of optical near-field and its application to photolithography by Yamaguchi, Maiku, Nobusada, Katsuyuki, Kawazoe, Tadashi, Yatsui, Takashi

    Published in Applied physics letters (11-05-2015)
    “…An electric field gradient is an inherent property of the optical near-field (ONF). We investigated its effect on electron excitation in a quantum dot via…”
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  7. 7

    Angstrom-scale flatness using selective nanoscale etching by Yatsui, Takashi, Saito, Hiroshi, Nobusada, Katsuyuki

    Published in Beilstein journal of nanotechnology (18-10-2017)
    “…The realization of flat surfaces on the angstrom scale is required in advanced devices to avoid loss due to carrier (electron and/or photon) scattering. In…”
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  8. 8

    Transfer-printing-based integration of silicon nitride grating structure on single-crystal diamond toward sensitive magnetometers by Katsumi, Ryota, Hizawa, Takeshi, Kuwahata, Akihiro, Naruse, Shun, Hatano, Yuji, Iwasaki, Takayuki, Hatano, Mutsuko, Jelezko, Fedor, Onoda, Shinobu, Ohshima, Takeshi, Sekino, Masaki, Yatsui, Takashi

    Published in Applied physics letters (17-10-2022)
    “…Negatively charged nitrogen-vacancy (NV) centers in diamond have emerged as promising candidates for a wide range of quantum applications, especially quantum…”
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  9. 9

    Rapid virus detection using magnetic second harmonics of superparamagnetic iron oxide nanoparticles by Hirota, Ryuichi, Murayama, Toru, Katsumi, Ryota, Kawawaki, Tokuhisa, Yabukami, Shin, Igarashi, Ryuji, Negishi, Yuichi, Kusakabe, Moriaki, Sekino, Masaki, Yatsui, Takashi, Kuwahata, Akihiro

    Published in AIP advances (01-02-2023)
    “…Virus detection methods based on nonlinear magnetic response of magnetic nanoparticles have been investigated, and magnetic detection methods using the third…”
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    Journal Article
  10. 10

    Observing the localization of light in space and time by ultrafast second-harmonic microscopy by Mascheck, Manfred, Schmidt, Slawa, Silies, Martin, Yatsui, Takashi, Kitamura, Kokoro, Ohtsu, Motoichi, Leipold, David, Runge, Erich, Lienau, Christoph

    Published in Nature photonics (01-05-2012)
    “…Multiple coherent scattering and the constructive interference of certain scattering paths form the common scheme of several remarkable localization phenomena…”
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  11. 11

    Dressed-photon–phonon (DPP)-assisted visible- and infrared-light water splitting by Yatsui, Takashi, Imoto, Tsubasa, Mochizuki, Takahiro, Kitamura, Kokoro, Kawazoe, Tadashi

    Published in Scientific reports (02-04-2014)
    “…A dressed-phonon–phonon (DPP) assisted photocatalyst reaction was carried out to increase the visible light responsibility, where the photon energy of the…”
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  12. 12

    Coupling of Er light emissions to plasmon modes on In2O3: Sn nanoparticle sheets in the near-infrared range by Matsui, Hiroaki, Badalawa, Wasanthamala, Hasebe, Takayuki, Furuta, Shinya, Nomura, Wataru, Yatsui, Takashi, Ohtsu, Motoichi, Tabata, Hitoshi

    Published in Applied physics letters (28-07-2014)
    “…Near-infrared Er photoluminescence (PL) is markedly modified using a plasmonic In2O3: Sn nanoparticle (NP) sheet. Modeling and optical measurements reveal the…”
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    Journal Article
  13. 13

    CO2 phonon mode renormalization using phonon-assisted energy up-conversion by Tanjeem, Nabila, Kawazoe, Tadashi, Yatsui, Takashi

    Published in Scientific reports (26-11-2013)
    “…Molecular dissociation under incident light whose energy is lower than the bond dissociation energy has been achieved through multi step excitation using a…”
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    Journal Article
  14. 14

    Virus Detection using Second Harmonics of Magnetic Nanoparticles by Hirota, Ryuichi, Murayama, Toru, Katsumi, Ryota, Kawawaki, Tokuhisa, Yabukami, Shin, Igarashi, Ryuji, Negishi, Yuichi, Kusakabe, Moriaki, Sekino, Masaki, Yatsui, Takashi, Kuwahata, Akihiro

    “…Virus detection methods based on the nonlinear magnetic response of magnetic nanoparticles have been investigated, and magnetic detection methods using the…”
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    Journal Article
  15. 15

    Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity by Raman Nair, Sarath, Rogers, Lachlan J., Vidal, Xavier, Roberts, Reece P., Abe, Hiroshi, Ohshima, Takeshi, Yatsui, Takashi, Greentree, Andrew D., Jeske, Jan, Volz, Thomas

    Published in Nanophotonics (Berlin, Germany) (01-11-2020)
    “…Laser threshold magnetometry using the negatively charged nitrogen-vacancy (NV ) centre in diamond as a gain medium has been proposed as a technique to…”
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    Journal Article
  16. 16

    Nanophotonic switch using ZnO nanorod double-quantum-well structures by Yatsui, Takashi, Sangu, Suguru, Kawazoe, Tadashi, Ohtsu, Motoichi, An, Sung Jin, Yoo, Jinkyoung, Yi, Gyu-Chul

    Published in Applied physics letters (28-05-2007)
    “…The authors report on time-resolved near-field spectroscopy of Zn O ∕ Zn Mg O nanorod double-quantum-well structures (DQWs) for a nanometer-scale photonic…”
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  17. 17

    Optically controlled magnetic-field etching on the nano-scale by Yatsui, Takashi, Tsuboi, Toshiki, Yamaguchi, Maiku, Nobusada, Katsuyuki, Tojo, Satoshi, Stehlin, Fabrice, Soppera, Olivier, Bloch, Daniel

    Published in Light, science & applications (01-03-2016)
    “…Electric and magnetic fields play an important role in both chemical and physical reactions. However, since the coupling efficiency between magnetic fields and…”
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  18. 18

    Production of size-controlled Si nanocrystals using self-organized optical near-field chemical etching by Yatsui, Takashi, Ohtsu, Motoichi

    Published in Applied physics letters (27-07-2009)
    “…We demonstrate the selective photochemical etching of Si in a self-organized manner, which strongly depends on the distribution of the optical near field. This…”
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  19. 19

    Surface improvement of organic photoresists using a near-field-dependent etching method by Brandenburg, Felix J, Okamoto, Tomohiro, Saito, Hiroshi, Leuschel, Benjamin, Soppera, Olivier, Yatsui, Takashi

    Published in Beilstein journal of nanotechnology (05-04-2017)
    “…Surface flattening techniques are extremely important for the development of future electrical and/or optical devices because carrier-scattering losses due to…”
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