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Naoto Koshizaki
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Journal Articles

Double threshold behavior in a resonance-controlled ZnO random laser

Ryo Niyuki, Hideki Fujiwara, Toshihiro Nakamura, Yoshie Ishikawa, Naoto Koshizaki, Takeshi Tsuji, Keiji Sasaki
Journal: APL Photonics
APL Photonics 2, 036101 (2017)
https://doi.org/10.1063/1.4974334
Published: January 2017
View article titled, Double threshold behavior in a resonance-controlled ZnO random laser
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Journal Articles

Low-threshold and quasi-single-mode random laser within a submicrometer-sized ZnO spherical particle film

Hideki Fujiwara, Ryo Niyuki, Yoshie Ishikawa, Naoto Koshizaki, Takeshi Tsuji, Keiji Sasaki
Journal: Applied Physics Letters
Appl. Phys. Lett. 102, 061110 (2013)
https://doi.org/10.1063/1.4792349
Published: February 2013
View article titled, Low-threshold and quasi-single-mode random laser within a submicrometer-sized ZnO spherical particle film
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Journal Articles

Ultraviolet whispering-gallery-mode lasing in ZnO micro/nano sphere crystal

Kota Okazaki, Tetsuya Shimogaki, Koshi Fusazaki, Mitsuhiro Higashihata, Daisuke Nakamura, Naoto Koshizaki, Tatsuo Okada
Journal: Applied Physics Letters
Appl. Phys. Lett. 101, 211105 (2012)
https://doi.org/10.1063/1.4768696
Published: November 2012
View article titled, Ultraviolet whispering-gallery-mode lasing in ZnO micro/nano sphere crystal
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Journal Articles

Carrier doping into boron nanobelts by neutron transmutation

Kazuhiro Kirihara, Yoshiki Shimizu, Yoichi Yamada, Fumitaka Esaka, Takeshi Sasaki, Naoto Koshizaki, Hiroyuki Yamamoto, Shin-ichi Shamoto, Kaoru Kimura
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 212105 (2010)
https://doi.org/10.1063/1.3517498
Published: November 2010
View article titled, Carrier doping into boron nanobelts by neutron transmutation
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Journal Articles

Generation of room-temperature atmospheric H 2 / Ar microplasma jet driven with pulse-modulated ultrahigh frequency and its application to gold nanoparticle preparation

Yoshiki Shimizu, Kenji Kawaguchi, Takeshi Sasaki, Naoto Koshizaki
Journal: Applied Physics Letters
Appl. Phys. Lett. 94, 191504 (2009)
https://doi.org/10.1063/1.3129168
Published: May 2009
View article titled, Generation of room-temperature atmospheric H 2 / Ar microplasma jet driven with pulse-modulated ultrahigh frequency and its application to gold nanoparticle preparation
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Proceedings Papers

Fabrication of nanomaterials by laser irradiation process in liquid phase

Naoto Koshizaki
View Paper titled, Fabrication of nanomaterials by laser irradiation process in liquid phase
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Journal Articles

Blue luminescent silicon nanocrystals prepared by nanosecond laser ablation and stabilized in electronically compatible spin on glasses

Vladimir Švrček, Takeshi Sasaki, Yoshiki Shimizu, Naoto Koshizaki
Journal: Journal of Applied Physics
J. Appl. Phys. 103, 023101 (2008)
https://doi.org/10.1063/1.2830798
Published: January 2008
View article titled, Blue luminescent silicon nanocrystals prepared by nanosecond laser ablation and stabilized in electronically compatible spin on glasses
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Journal Articles

Boron carbide spherical particles encapsulated in graphite prepared by pulsed laser irradiation of boron in liquid medium

Yoshie Ishikawa, Yoshiki Shimizu, Takeshi Sasaki, Naoto Koshizaki
Journal: Applied Physics Letters
Appl. Phys. Lett. 91, 161110 (2007)
https://doi.org/10.1063/1.2799786
Published: October 2007
View article titled, Boron carbide spherical particles encapsulated in graphite prepared by pulsed laser irradiation of boron in liquid medium
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Journal Articles

Gas temperature and electron temperature measurements by emission spectroscopy for an atmospheric microplasma

Davide Mariotti, Yoshiki Shimizu, Takeshi Sasaki, Naoto Koshizaki
Journal: Journal of Applied Physics
J. Appl. Phys. 101, 013307 (2007)
https://doi.org/10.1063/1.2409318
Published: January 2007
View article titled, Gas temperature and electron temperature measurements by emission spectroscopy for an atmospheric microplasma
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Journal Articles

Dependence of photocurrent in single-crystalline boron nanobelts on atmosphere

Kazuhiro Kirihara, Kenji Kawaguchi, Yoshiki Shimizu, Takeshi Sasaki, Naoto Koshizaki, Kohei Soga, Kaoru Kimura
Journal: Applied Physics Letters
Appl. Phys. Lett. 89, 243121 (2006)
https://doi.org/10.1063/1.2404609
Published: December 2006
View article titled, Dependence of photocurrent in single-crystalline boron nanobelts on atmosphere
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Journal Articles

Laser ablation of a platinum target in water. I. Ablation mechanisms

William T. Nichols, Takeshi Sasaki, Naoto Koshizaki
Journal: Journal of Applied Physics
J. Appl. Phys. 100, 114911 (2006)
https://doi.org/10.1063/1.2390640
Published: December 2006
View article titled, Laser ablation of a platinum target in water. I. Ablation mechanisms
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Journal Articles

Laser ablation of a platinum target in water. II. Ablation rate and nanoparticle size distributions

William T. Nichols, Takeshi Sasaki, Naoto Koshizaki
Journal: Journal of Applied Physics
J. Appl. Phys. 100, 114912 (2006)
https://doi.org/10.1063/1.2390641
Published: December 2006
View article titled, Laser ablation of a platinum target in water. II. Ablation rate and nanoparticle size distributions
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Journal Articles

Laser ablation of a platinum target in water. III. Laser-induced reactions

William T. Nichols, Takeshi Sasaki, Naoto Koshizaki
Journal: Journal of Applied Physics
J. Appl. Phys. 100, 114913 (2006)
https://doi.org/10.1063/1.2390642
Published: December 2006
View article titled, Laser ablation of a platinum target in water. III. Laser-induced reactions
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Journal Articles

Blue luminescent silicon nanocrystals prepared by ns pulsed laser ablation in water

Vladimir Švrček, Takeshi Sasaki, Yoshiki Shimizu, Naoto Koshizaki
Journal: Applied Physics Letters
Appl. Phys. Lett. 89, 213113 (2006)
https://doi.org/10.1063/1.2397014
Published: November 2006
View article titled, Blue luminescent silicon nanocrystals prepared by ns pulsed laser ablation in water
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Journal Articles

Method to determine argon metastable number density and plasma electron temperature from spectral emission originating from four 4 p argon levels

Davide Mariotti, Yoshiki Shimizu, Takeshi Sasaki, Naoto Koshizaki
Journal: Applied Physics Letters
Appl. Phys. Lett. 89, 201502 (2006)
https://doi.org/10.1063/1.2390631
Published: November 2006
View article titled, Method to determine argon metastable number density and plasma electron temperature from spectral emission originating from four 4 p argon levels
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Journal Articles

Room-temperature deposition of nanocrystalline Ca W O 4 films by pulsed laser and their optical properties

Jeong Ho Ryu, Jong-Won Yoon, Kwang Bo Shim, Takeshi Sasaki, Naoto Koshizaki
Journal: Journal of Applied Physics
J. Appl. Phys. 99, 086103 (2006)
https://doi.org/10.1063/1.2186370
Published: April 2006
View article titled, Room-temperature deposition of nanocrystalline Ca W O 4 films by pulsed laser and their optical properties
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Journal Articles

Ultraviolet emission from layered nanocomposites of Zn ( O H ) 2 and sodium dodecyl sulfate prepared by laser ablation in liquid

Hiroyuki Usui, Takeshi Sasaki, Naoto Koshizaki
Journal: Applied Physics Letters
Appl. Phys. Lett. 87, 063105 (2005)
https://doi.org/10.1063/1.2008373
Published: August 2005
View article titled, Ultraviolet emission from layered nanocomposites of Zn ( O H ) 2 and sodium dodecyl sulfate prepared by laser ablation in liquid
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Journal Articles

Fabrication and magnetoresistance of tunnel junctions using half-metallic Fe 3 O 4

Woochul Kim, Kenji Kawaguchi, Naoto Koshizaki, Mitsugu Sohma, Tetsuro Matsumoto
Journal: Journal of Applied Physics
J. Appl. Phys. 93, 8032–8034 (2003)
https://doi.org/10.1063/1.1557337
Published: May 2003
View article titled, Fabrication and magnetoresistance of tunnel junctions using half-metallic Fe 3 O 4
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