Peer reviewed papers (as of August, 2018)

2019

Toshiyuki Kaizu, Yousuke Kawajiri, Masahito Enomoto, Takashi Uchino, Minoru Mizuhata, Yuichi Ichihashi, Keita Taniya, Satoru Nishiyama, Masakazu Sugiyama, Masami Ueno, Takashi Kita
Photoelectrochemical Reaction in an Electric Cell with a Porous Carbon Anode
J. Phys. Chem. C123 19447-19452 (2019).

Ryosuke Matsubara, Tomoaki Kaiba, Akito Nakata, Tatsushi Yabuta, Masahiko Hayashi, Motonari Tsubaki, Takashi Uchino, Eri Chatani
9-Aryl-3-aminocarbazole as an Environment- and Stimuli-Sensitive Fluorogen and Applications in Lipid Droplet Imaging
J. Org. Chem. 84 5535-5547 (2019).

Doddoji Ramachari, Chan-Shan Yang, Osamu Wada, Takashi Uchino, and Ci-Ling Pani
High-refractive index, low-loss oxyfluorosilicate glasses for sub-THz and millimeter wave applications
J. Appl. Phys. 125 151609 (2019).

2018

Yu Nagayoshi, Ryosuke Matsuzaki and Takashi Uchino
Multiple Intersystem Crossing Processes in Ge-Doped Silica Glass: Emission Mechanism of 2-Fold Coordinated Ge atoms
J. Phys. Chem. C 122 23712-23719 (2018).

Ryosuke Matsuzaki and Takashi Uchino
Effect of size and shape on the excitonic stimulated emission process in ZnO microstructures
J. Appl. Phys.124 063103 (2018).

Emi Tsushima, Takuya Tsujimura, and Takashi Uchino
Enhancement of the deep-level emission and its chemical origin in hexagonal boron nitride
Appl. Phys. Lett. 113 031903 (2018).

2017

R. Matsuzaki, H. Soma, K. Fukuoka, K. Kodama, A. Asahara, T. Suemoto, Y. Adachi, and T. Uchino
Purely excitonic lasing in ZnO microcrystals: Temperature-induced transition between exciton-exciton and exciton-electron scattering
Phys. Rev. B96 125306 (2017).

K. Genji and T. Uchino
Synthesis and photoluminescence characteristics of blue-green luminescent aluminum oxynitride
J. Am. Ceram. Soc100(11) 5162-5173 (2017).

H. Soma and T. Uchino
Blue and orange photoluminescence and surface band-gap narrowing in lithium-doped MgO microcrystals
J. Phys. Chem. C 121(3) 1884-1892 (2017).

2016

Y. Nagayoshi and T. Uchino
Enhanced ultraviolet emission and its irreversible temperature antiquenching behavior of twofold coordinated silicon centers in silica glass
Appl. Phys. Lett. 109 181103 (2016).

K. Genji and T. Uchino
Time-resolved photoluminescence characterization of oxygen-related defect centers in AlN
Appl. Phys. Lett. 109 021113 (2016).

K. Ueno, Y. Nagashima, Y. Seto, M. Matsumoto, T. Sakurai, H. Ohta, K. Takahashi and T. Uchino
Coherent interface structures and intergrain Josephson coupling in dense MgO/Mg₂Si/MgB₂ nanocomposites
J. Appl. Phys. 120 015102 (2016).

2015

H. Soma, Y. Uenaka, A. Asahara, T. Suemoto and T. Uchino
Ultraviolet Stimulated Emission from High-Temperature-Annealed MgO Microcrystals at Room Temperature
Appl. Phys. Lett. 106 041116 (2015).

2014

K. Kodama and T. Uchino
Variations in Decay Rate of Green Photoluminescence in ZnO under Above- and Below-Band-Gap Excitation
J. Phys. Chem. C, 118(41), 23977-23985 (2014).

Y. Uenaka and T. Uchino
Excitonic and Defect-Related Photoluminescence in Mg₃N₂
J. Phys. Chem. C 118(22), 11895-11901 (2014).

T. Uchino, Y. Uenaka, H. Soma, T. Sakurai, and H. Ohta
Magnetic hysteresis behavior and magnetic pinning in a d⁰ ferromagnet/superconductor nanostructure
J. Appl. Phys. 115 063910 (2014).

S. Ikeda and T. Uchino
Temperature and Excitation Energy Dependence of the Photoionization of the F₂ Center in α-Al₂O₃
J. Phys. Chem. C 118 1346-4353 (2014).

2013

T. Uchino and T. Yoko
Spin-polarized ground states and ferromagnetic order induced by low-coordinated surface atoms and defects in nanoscale magnesium oxide
Phys. Rev. B 87 144414 (2013).

2012

S. Sawai and T. Uchino
Visible Photoluminescence from MgAl₂O₄ Spinel with Cation Disorder and Oxygen Vacancy
J. Appl. Phys. 112 103523 (2012).
A. Anjiki and T. Uchino
Visible Photoluminescence from Photoinduced Molecular Species in Nanometer-Sized Oxides: Crystalline Al₂O₃ and Amorphous SiO₂ Nanoparticles
J. Phys. Chem. C 116 15747-15755 (2012).
K. Kodama and T. Uchino
Thermally Activated Below-Band-Gap Excitation Behind Green Photoluminescence in ZnO
J. Appl. Phys 111 093525 (9pages) (2012).
T. Iwasaka, K. Inoue, R. Katayama, and T. Uchino
Synthesis of Luminescent Silica Crystals via a Sonochemical Reduction Route
J. Phys. Chem. C 116 6754–6761 (2012).
T. Uchino and T. Yoko
Symmetry and nonstoichiometry as possible origins of ferromagnetism in nanoscale oxides
Phys. Rev. B 85 012407 (2012) (5 pages).

2011

Y. Uenaka and T. Uchino
Photoexcitation, trapping, and recombination processes of the F-type centers in lasing MgO microcrystals
Phys. Rev. B 83 195108 (2011) (15 pages).

2010

K. Matsumoto, Y. Uenaka, Y. Seto, H. Yashiro, H. Nakamura, T. Kimura, and T. Uchino
Synthetic Condition to Generate Magnesium-Related Acceptor Levels in Silicon
J. Appl. Phys. 108, 113706 (2010)
T. Uchino
Oxides of Third Period Elements Revisited: Synthesis, Structure and Photoluminescence Properties of Silica, Magnesia, and Alumina (review)
J. Ceram. Soc. Jpn. 118(12), 1115-1123 (2010)
Y. Iwasaki, Y. Shibata, A. Watanabe, M. Inada, H. Kawasaki and T. Uchino
One-pot Preparation of Water-soluble Blue Luminescent Silica Flakes via Microwave Heating
Chem. Lett. 39(4) 370-371 (2010)
A. Nishimura, S. Harada, and T. Uchino
Effect of Cross-Linking and Organic Groups on the Visible Photoluminescence Characteristics of n-Octadecylsiloxanes
J. Phys. Chem. C, 114 8568 (2010)

2009

M. Itou, A. Fujiwara, and T. Uchino
Reversible Photoinduced Interconversion of Color Centers in α-Al₂O₃ Prepared Under Vacuum
J. Phys. Chem. C, 113 20949 (2009)
T. Uchino, D. Okutsu, R. Katayama, and S. Sawai
Mechanism of Stimulated Optical Emission from MgO Microcrystals with Color Centers
Phys. Rev. B 79(16), 165107 (2009) (8 pages) .
D. Gautam, E. Koyanagi, and T. Uchino
Photoluminescence Properties of SiOx Thin Films Prepared by Reactive Electron Beam Evaporation from SiO and Silica Nanoparticles
J. Appl. Phys. 105 073517 (2009) (8 pages).
A. Nishimura, N. Sagawa, and T. Uchino
Structural Origin of Visible Luminescence from Silica Based Organic-Inorganic Hybrid Materials
J. Phys. Chem. C, 113(11) 4260-4262 (2009).

2008

T. Uchino and D. Okutsu
Broadband Laser Emission from Color Centers Inside MgO Microcrystals
Phys. Rev. Lett., 101(11) 117401 (2008) (4pages)
Y. Nakazaki, K. Fujita, K. Tanaka, and T. Uchino
Effect of Microscopic Structure and Porosity on the Photoluminescence Properties of Silica Gels
J. Phys. Chem. C, 112(29) 10878-10882 (2008).
T. Uchino, A. Aboshi, T. Yamada, Y. Inamura and Y. Katayama
In situ x-ray Diffraction Study of the Size Dependence of Pressure-Induced Structural Transformation in Amorphous Silica Nanoparticles
Phys. Rev. B, 77(13) 132201 (2008).
N. Sawawa and T. Uchino
Effect of Annealing on the Visible Photoluminescence Characteristics of Octadecyltrichlorosilane Monolayers on Silica Surfaces
J. Phys. Chem. C, 112(12) 4581-4589 (2008).

2007

A. Mukai, S. Kohara, and T. Uchino
Modification of Medium-Range Order in Silica Glass by Ball Milling: Real- and Reciprocal-Space Structural Correlations for the First Sharp Diffraction Peak
J. Phys.: Condens. Matter 19, 455214 (2007)(7 pages).
T. Yamada, M. Nakajima, T. Suemoto, T. Uchino
Formation and Photoluminescence Characterization of Transparent Silica Glass Prepared by Solid Phase Reaction of Nanometer-Sized Silica Particles
J. Phys. Chem. C 111, 12973-12979 (2007).
E. Koyanagi and T. Uchino
Evolution Process of Luminescent Si Nanostructures in Annealed SiOx Thin Films Probed by Photoconductivity Measurements
Appl. Phys. Lett. 91, 041910 (2007) (3 pages).
A. Aboshi, N. Kurumoto, T. Yamada, and T. Uchino
Influence of Thermal Treatments on the Photoluminescence Characteristics of Nanometer-Sized Amorphous Silica Particles
J. Phys. Chem. C 111 8483-8488 (2007).
N. Kurumoto, T. Yamada, and T. Uchino
"Enhanced Blue Photoluminescence from SiCl₄-Treated Nanometer-Sized Silica Particles"
J. Non-Cryst. Solids 353, 684-686 (2007).

2006

T. Uchino and T. Yoko
Density Functional Theory of Structural Transformations of Oxygen-Deficient Centers in Amorphous Silica During Hole Trapping: Structure and Formation Mechanism of the E'(gamma) Center
Phys. Rev. B 74, 125203 (2006) (11 pages)
T. Uchino, N. Kurumoto, and N. Sagawa
Structure and Formation Mechanism of Blue-Light-Emitting Centers in Silicon and Silica-Based Nanostructured Materials
Phys. Rev. B 73, 233203 (2006) (4 pages)

2005

N. Sagawa and T. Uchino
Visible Luminescence from Octadecylsilane Monolayers on Silica Surfaces: Time-Resolved Photoluminescence Characterization
Appl. Phys. Lett. 87 251923 (2005)
T. Yamada and T. Uchino
Photoluminescence Decay Dynamics of Transparent Silica Glass Prepared from Nanometer-Sized Silica Particles
Appl. Phys. Lett. 87 081904 (2005)
D. Miyabe, M. Takahashi, Y. Tokuda, T. Yoko, and T. Uchino
Structure and Formation Mechanism of Six-Fold Coordinated Silicon in Phosphosilicate Glasses
Phys. Rev. B 71 172202 (2005)
T. Uchino, J. D. Harrop, S. N. Taraskin, and S. R. Elliott
Real and Reciprocal Space Structural Correlations Contributing to the First Sharp Diffraction Peak in Silica glass
Phys. Rev. B 71 014202 (2005)
T. Uchino
Structure and Properties of Amorphous Silica and Its Related Materials: Recent Developments and Future Directions (Review)
J. Ceram. Soc. Jpn. 113 17-25 (2005)

2004

T. Uchino and T. Yamada
White Light Emission from Transparent SiO₂ Glass Prepared from Nanometer-Sized Silica Particles
Appl. Phys. Lett. 85 1164-1166 (2004)
T. Uchino, A. Aboshi, S. Kohara, Y. Ohishi, M. Sakashita, and K. Aoki
Microscipic Structure of Nanometer-Sized Silica Particles
Phys. Rev. B 69 155409 (2004)

2003

T. Uchino and T. Yoko
Mechanism of Electron Localization at Edge-Sharing Units in Amorphous SiO₂
Phys. Rev. B 68 041201(R) (2003)
T. Uchino and S. R. Elliott
Electronic Excitation and Transient Defects in As₂S₃ Glass
Phys. Rev. B 67 174201 (2003)
T. Uchino, A. Sakoh, M. Azuma, S. Kohara, M. Takahashi, M. Takano, and T. Yoko
Anelastic Compression of Nanometer-Sized Silica Particles under High Pressure: A High Energy X-ray Diffraction Measurement
Phys. Rev. B 67 092202 (2003)
Y. Tokuda, T. Uchino, and T. Yoko
Ab Initio Study of NMR Spectra of Li₂S-SiO₂ Glass System
J. Non-Cryst. Solids 33061-65 (2003)

2002

T. Uchino, M. Takahashi, and T. Yoko
Microscopic Mechanism of Radiation Induced Structural Changes in Pure and Doped SiO₂ Glass
Phys. Chem. Glasses 43C 149-154 (2002)
T. Uchino, A. Sakoh, M. Azuma, M. Takano, M. Takahashi, and T. Yoko,
A Novel Pressure-Induced Polymorphic Transition from Fumed Silica to Transparent Amorphous SiO₂ at Room Temperature
J. Phys.: Condens. Matter 14 11111-11114 (2002)
T. Uchino
Structure of As₂S₃ Glass in Electronically Excited States
J. Optelectron. Adv. Mat. 4 605-609 (2002)
T. Uchino, D. C. Clary, and S. R. Elliott
Microscopic Mechanisms for Photoinduced Metastability in Amorphous As₂S₃
Phys. Rev. B 65 174204 (2002)
T. Uchino, M. Takahashi, K. Ichii and T. Yoko
Microscopic Model of Photoinduced and Pressure-Induced UV Spectral Changes in Germanosilicate Glass
Phys. Rev. B 65,172202 (2002)
T. Uchino, M. Takahashi and T. Yoko
Formation and decay mechanisms of electron-hole pairs in amorphous SiO₂
Appl. Phys. Lett. 80 1147-1149 (2002)

2001

T. Uchino
Ab Initio Cluster Calculations on Point Defects in Amorphous SiO₂
Current Opinion in Solid State & Materials Science 5 517-523 (2001)
T. Uchino, M. Takahashi and T. Yoko
Model of a Switching Oxide Trap in Amorphous Silicon Dioxide
Phys. Rev. B 64 081310(R) (2001)
T. Uchino, M. Takahashi and T. Yoko
E' Centers in Amorphous SiO₂ Revisited: A New Look at an Old Problem
Phys. Rev. Lett. 86 5522-5525 (2001)
T. Uchino, M. Takahashi and T. Yoko
Mechanism of Electron Trapping in Ge-Doped SiO₂ Glass
Appl. Phys. Lett. 79 359-361 (2001).
T. Uchino, M. Takahashi and T. Yoko
Structure and Formation Mechanism of the E'-alpha Center in Amorphous SiO₂
Appl. Phys. Lett. 78 2730-2732 (2001).
T. Uchino, M. Takahashi and T. Yoko
Structure and Generation Mechanism of the Peroxy-Radical Defect in Amorphous Silica
Phys. Rev. Lett. 86 4560-4563 (2001).
T. Uchino, M. Takahashi and T. Yoko
Mechanism of Interconversion among Radiation-Induced Defects in Amorphous Silicon Dioxide
Phys. Rev. Lett. 86 1777-1780 (2001).
M. Takahashi, K. Tsukigi, T. Uchino and T. Yoko
Enhanced Photocurrent in Thin Film TiO₂ Electrodes Prepared by Sol-Gel Method
Thin Solid Films 388 231-236 (2001).
Y. Tokuda, T. Uchino and T. Yoko
Vibrational Dynamics of Glassy SiS₂ on the Basis of Molecular Orbital Calculations
J. Non-Cryst. Solids. 282 256-264 (2001).
H. Niida, T. Uchino, J. Jin, S. H. Kim, T. Fukunaga, and T. Yoko
Structure of Alkali Tellurite Glasses from Neutron Diffraction and Molecular Orbital Calculations
J. Chem. Phys. 114 459-467 (2001).

2000

T. Uchino, M. Takahashi and T. Yoko
Structure and Paramagnetic Properties of Defect Centers in Ge-Doped SiO₂ glass: Localized and Delocalized Ge E' Centers
Phys. Rev. B 62 15303-15306 (2000).
T. Uchino, D. C. Clary, and S. R. Elliott
Mechanism of Photoinduced Changes in the Structure and Optical Properties of Amorphous As₂S₃
Phys. Rev. Lett. 85 3305-3308 (2000).
T. Takaishi, J. Jin, T. Uchino, and T. Yoko
Structural Study of PbO-B₂O₃ Glasses by X-ray Diffraction and ¹¹B MAS NMR Techniques
J. Am. Ceram. Soc. 83 2543-2548 (2000).
T. Uchino, M. Takahashi and T. Yoko
Model of Oxygen-Deficiency-Related Defects in SiO₂ Glass
Phys. Rev. B 62 2983-2986 (2000).
T. Uchino, M. Takahashi and T. Yoko
Structure and Formation Mechanism of Ge E' Center from Divalent Defects in Ge-doped SiO₂ Glass
Phys. Rev. Lett. 84 1475-1478 (2000).
T. Uchino, Y. Kitagawa and T. Yoko
Structre, Energies and Vibrational Properties of Silica Rings in SiO₂ Glass
Phys. Rev. B 61 234-240 (2000).
T. Uchino and T. Yoko
Structure and Vibrational Properties of Alkali Phosphate Glasses from ab Initio Molecular Orbital Calculations
J. Non-Cryst. Solids 263&264 180-188 (2000).
T. Uchino, K. Nakaguchi, Y. Nagashima and T. Kondo
Prediction of Optical Properties of Commercial Soda-Lime-Silicate Glasses Containing Iron
J. Non-Cryst. Solids 261 72-78 (2000).

1999

T. Uchino and T. Yoko
Sodium and Lithium Environments in Single- and Mixed-Alkali Silicate Glasses. An ab Initio Molecular Orbital Study
J. Phys. Chem. B 103 1854-1858 (1999).
T. Uchino and T. Yoko
Structure and Low-frequency vibrational properties of (H₂O)₁₀ composed of a ring form of (H₂O)₄ and a cage form of (H₂O)₆
Phys. Chem. Chem. Phys. 1 3473-3479 (1999).
T. Uchino
Effect of Order on the Structure and Vibrational Properties of Glasses
Chemistry and Chemical Industry 2 128-132 (1999). (in Japanese)

1998

T. Uchino and T. Yoko
Structure and Vibrational Properties of Sodium Disilicate Glass from ab Initio Molecular Orbital Calculations
J. Phys. Chem. B 102 8372-8378 (1998).
T. Uchino and T. Yoko
Localized Low-Frequency Dynamics in SiO₂ Glass
J. Chem. Phys. 108 8130-8138 (1998).
T. Uchino, Y. Tokuda and T. Yoko
Vibrational Dynamics of Defect Modes in Vitreous Silica
Phys. Rev. B 58 5322-5328 (1998).
T. Uchino and T. Yoko
Vibrations of Alkali Cations in Borate Glasses from Molecular Orbital Calculations
Solid State Ionics 105 91-96 (1998).

1997

T. Uchino and T. Yoko
Ab Initio Molecular Orbital Calculations on the Structure and the Low-Frequency Vibrational Modes in B₂O₃ and Alkali Borate Glasses
in Borate Glasses, Crystals & Melts, edited by A.C. Wright, S.A. Feller and AC Hannon (The Society of Glass Technology, Sheffield) 417-424 (1997).
T. Uchino and T. Yoko
Ab Initio Molecular Orbital Calculations on the Boson Peak Frequencies of Molecular Glasses
Prog. Theor. Phys. Suppl. 126 147-150 (1997).
T. Uchino, S. Kim, T. Yoko and T. Fukunaga
Medium-Range Structure of TeO₂ Glass from Molecular Orbital Calculations
J. Ceram. Soc. Japan 105, 201-205 (1997).
K. Terashima, T. Uchino, T. Hashimoto and T. Yoko
Structure and Nonlinear Optical Properties of BaO-TiO₂-B₂O₃ Glasses
J. Ceram. Soc. Japan 105 288-293 (1997).

1996

T. Uchino and T. Yoko
Low-Frequency Raman Scattering and the Fast Relaxation Process in Glycerol
Science 273 480-483 (1996).
T. Uchino and T. Yoko
Ab Initio Cluster Model Calculations on the Boson Peak Frequencies of B₂O₃ Glass
J. Chem. Phys. 105 4140-4150 (1996).
T. Uchino and T. Yoko
Ab Initio Cluster Model Calculations on the Vibrational Frequencies of TeO₂ Glass
J. Non-Cryst. Solids. 204 243-252 (1996).
K. Terashima, T. Hashimoto, T. Uchino, S. Kim and T. Yoko
Structure and Nonlinear Optical Properties of Sb₂O₃-B₂O₃ Binary Glasses
J. Ceram. Soc. Japan 104 1008-1014 (1996).

1995

T. Uchino
Models for Ionic Transport in Oxide Glasses
Def. Diff. Forum 117-118 111-28 (1995).
T. Uchino and Y. Ogata
Ab Initio Molecular Orbital Calculations on the Electronic Structure of Phosphate Glasses. Binary Alkali Phosphate Glasses
J. Non-Cryst. Solids 191 56-70 (1995).
T. Uchino and Y. Ogata
Ab Initio Molecular Orbital Calculations on the Electronic Structure of Phosphate Glasses. Sodium Phosphate Glasses
J. Non-Cryst. Solids 181 175-188 (1995).
T. Uchino and Y. Ogata
Ab Initio Normal-Mode Analysis of Low Frequency Raman Scattering in B₂O₃ Glass
Proceedings of XVII International Congress on Glass, Vol.2 (Chinese Ceramic Society, Beijing) pp. 15-20 (1995).
T. Uchino and T. Yoko
Ab Initio Molecular Orbital Calculations on the Structure and Properties of Heavy-Metal Oxide Glasses
New. Glass 10 41-44 (1995). (in Japanese)

1994

Coffee Break

1993

T. Uchino, T. Sakka, Y. Ogata, and M. Iwasaki
Local Structure of Sodium Aluminosilicate Glasses: An ab Initio Molecular Orbital Study
J. Phys. Chem. 97 9642-49 (1993).

1992

T. Uchino, T. Sakka, Y. Ogata and M. Iwasaki
Mechanism of Hydration of Sodium Silicate Glass in a Steam Environment: ²⁹Si NMR and ab Initio Molecular Orbital Studies
J. Phys. Chem. 96 7308-7315 (1992).
T. Uchino, T. Sakka, Y. Ogata and M. Iwasaki
A New Model of Ionic Transport for Single and Mixed Alkali Oxide Glasses Based on ab Initio Molecular Orbital Calculations
J. Non-Cryst. Solids 146 26-42 (1992).
T. Uchino. T. Sakka, Y. Ogata and M. Iwasaki
Changes in the Structure of Alkali-Metal Silicate Glasses with the Type of Network Modifier Cation: An ab Initio Molecular Orbital Study
J. Phys. Chem. 96 2455-63 (1992).

1991

T. Uchino, T. Sakka, M. Iwasaki and Y. Ogata
Ab Initio Molecular Orbital Calculations on the Electronic Structure of Sodium Silicate Glasses
J. Phys. Chem. 95 5455-62 (1991).
T. Uchino, T. Sakka and M. Iwasaki
Interpretation of Hydrated States of Sodium Silicate Glasses by Infrared and Raman Analysis
J. Am. Ceram. Soc. 74 306-13 (1991).

1988-1890

T. Uchino, T. Sakka, K. Hotta and M. Iwasaki
Attenuated Total Reflectance Fourier-Transform Infrared Spectra of a Hydrated Sodium Silicate Glass
J. Am. Ceram. Soc. 72 2173-75 (1989).
Y. Takeuchi, N. Imanishi, K. Toyoda, T. Uchino and M. Iwasaki
Trapping of Hydrogen Implanted into Titanium
J. Appl. Phys. 64 2959-2963 (1988).

Japanese version