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1

Solid type silicon-phthalocyanine-conjugated hybrids with strong optical limiting effect

Haiping Xia, Masayuki Nogami, Tomokatsu Hayakawa, Dai Imaizumi

Journal:

Journal of Materials Science Letters

Year:

1999

Language:

english

File:

PDF, 47 KB

english, 1999

2

Enhanced fluorescence from Eu3+-doped silica gels by adsorbed CdS nanoparticles

S.Tamil Selvan, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Non-Crystalline Solids

Year:

2001

Language:

english

File:

PDF, 97 KB

english, 2001

3

Block Copolymer Mediated Synthesis of Gold Quantum Dots and Novel Gold−Polypyrrole Nanocomposites

Selvan, S. Tamil, Hayakawa, Tomokatsu, Nogami, Masayuki, Möller, Martin

Journal:

Journal of Physical Chemistry B

Year:

1999

Language:

english

File:

PDF, 198 KB

english, 1999

4

Chemical synthesis and characterization of palladium nanoparticles

Nguyen, Viet Long, Nguyen, Duc Chien, Hirata, Hirohito, Ohtaki, Michitaka, Hayakawa, Tomokatsu, Nogami, Masayuki

Journal:

Advances in Natural Sciences: Nanoscience and Nanotechnology

Year:

2010

Language:

english

File:

PDF, 628 KB

english, 2010

5

Development of the micro-channel plate photomultiplier for the Belle II time-of-propagation counter

Hirose, Shigeki, Iijima, Toru, Inami, Kenji, Furumura, Daiki, Hayakawa, Tomokatsu, Kato, Yuji, Matsuoka, Kodai, Mizuno, Ryo, Sato, Yutaro, Suzuki, Kazuhito, Yonekura, Takuya

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2015

Language:

english

File:

PDF, 803 KB

english, 2015

6

Accumulation and interparticle connections of triangular Ag-coated Au nanoprisms by oil-coating method for surface-enhanced Raman scattering applications

Noda, Yuta, Asaka, Toru, Fudouzi, Hiroshi, Hayakawa, Tomokatsu

Journal:

Applied Surface Science

Year:

2018

Language:

english

File:

PDF, 6.68 MB

english, 2018

7

Hydrothermal synthesis and photocatalytic properties of CuGaO2/ZnO hexagonal platelet hybrids

Choi, Min Uk, Hayakawa, Tomokatsu

Journal:

Materials Research Bulletin

Year:

2019

Language:

english

File:

PDF, 1.31 MB

english, 2019

8

ChemInform Abstract: Persistent Spectral Hole Burning in Eu3+-Doped Silicate Glasses Codoping Al3+ and P5+ Ions.

Masayuki Nogami, Takehito Nagakura, Tomokatsu Hayakawa, Tomokazu Sakai

Journal:

Year:

1999

File:

PDF, 29 KB

1999

9

ChemInform Abstract: Hydrogen Gas Sensing by Sol—Gel-Derived Proton-Conducting Glass Membranes.

Masayuki Nogami, Hiromi Matsushita, Toshihiro Kasuga, Tomokatsu Hayakawa

Journal:

Year:

1999

File:

PDF, 33 KB

1999

10

ChemInform Abstract: Remarkable Influence of Silver Islands on the Enhancement of Fluorescence from Eu3+ Ion-Doped Silica Gels.

S. Tamil Selvan, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Year:

1999

Language:

english

File:

PDF, 31 KB

english, 1999

11

ChemInform Abstract: High Proton Conductivity in Porous P2O5—SiO2 Glasses.

Masayuki Nogami, Ritsuko Nagao, Cong Wong, Toshihiro Kasuga, Tomokatsu Hayakawa

Journal:

Year:

2000

Language:

english

File:

PDF, 33 KB

english, 2000

12

Spectral hole burning and fluorescence in femtosecond laser induced Sm2+-doped glasses

Gil Jae Park, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Luminescence

Year:

2004

Language:

english

File:

PDF, 584 KB

english, 2004

13

Effect of Al3+ and Ti4+ ions on the laser reduction of Sm3+ ion in glass

Masayuki Nogami, Go Kawamura, Gil Jae Park, Hongpeng You, Tomokatsu Hayakawa

Journal:

Journal of Luminescence

Year:

2005

Language:

english

File:

PDF, 591 KB

english, 2005

14

Redox equilibrium of samarium ions doped in Al2O3–SiO2 glasses

Masayuki Nogami, Tatsuki Hagiwara, Go Kawamura, El-Sayed Ghaith, Tomokatsu Hayakawa

Journal:

Journal of Luminescence

Year:

2007

Language:

english

File:

PDF, 383 KB

english, 2007

15

Blue light emission from Eu2+ ions in sol–gel-derived Al2O3–SiO2 glasses

Yukari Kishimoto, Xiaoting Zhang, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Luminescence

Year:

2009

Language:

english

File:

PDF, 546 KB

english, 2009

16

Optical detection of near infrared femtosecond laser-heating of Er3+-doped ZnO–Nb2O5–TeO2 glass by green up-conversion fluorescence of Er3+ ions

Masahiko Hayakawa, Tomokatsu Hayakawa, Xiao Ting Zhang, Masayuki Nogami

Journal:

Journal of Luminescence

Year:

2011

Language:

english

File:

PDF, 704 KB

english, 2011

17

Nonlinear optical properties and glass structure for MO–Nb2O5–TeO2 (M = Zn, Mg, Ca, Sr, Ba) glasses

Tomokatsu Hayakawa, Masahiko Hayakawa, Masayuki Nogami, Philippe Thomas

Journal:

Optical Materials

Year:

2010

Language:

english

File:

PDF, 780 KB

english, 2010

18

Self-assembled 3-dimensional arrays of Au@SiO2 core-shell nanoparticles for enhanced optical nonlinearities

Yong Yang, Mamiko Hori, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Surface Science

Year:

2005

Language:

english

File:

PDF, 484 KB

english, 2005

19

Defect centers and room temperature persistent spectral hole burning in X-ray irradiated Eu3+-doped glass

Masayuki Nogami, Tomotaka Ishikawa, Tomokatsu Hayakawa

Journal:

Journal of Luminescence

Year:

2002

Language:

english

File:

PDF, 162 KB

english, 2002

20

Enhanced fluorescence of Eu3+ induced by energy transfer from nanosized SnO2 crystals in glass

Masayuki Nogami, Takehiro Enomoto, Tomokatsu Hayakawa

Journal:

Journal of Luminescence

Year:

2002

Language:

english

File:

PDF, 150 KB

english, 2002

21

The discrete energy transfer theory for donor fluorescence of RE3+ ions in glasses

Kazuhiko Tonooka, Koji Yamada, Tomokatsu Hayakawa

Journal:

Journal of Luminescence

Year:

1997

Language:

english

File:

PDF, 200 KB

english, 1997

22

Site-dependent fluorescence and hole-burning spectra of Eu3+-doped Al2O3–SiO2 glasses

Masayuki Nogami, Takehito Nagakura, Tomokatsu Hayakawa

Journal:

Journal of Luminescence

Year:

2000

Language:

english

File:

PDF, 218 KB

english, 2000

23

Optical properties and Judd-Ofelt parameters of Sm3+ doped BiO1.5-WO3-TeO2 glasses

Takeshi Fujiwara, Tomokatsu Hayakawa, Masayuki Nogami, Jean-René Duclère, Philippe Thomas

Journal:

physica status solidi (c)

Year:

2011

Language:

english

File:

PDF, 517 KB

english, 2011

24

Optical properties and Judd-Ofelt parameters of Sm3+ doped BiO1.5-WO3-TeO2 glasses

Takeshi Fujiwara, Tomokatsu Hayakawa, Masayuki Nogami, Jean-René Duclère, Philippe Thomas

Journal:

physica status solidi (c)

Year:

2011

Language:

english

File:

PDF, 343 KB

english, 2011

25

Raman spectra and third-order nonlinear optical Z-scan properties of MO-Nb2O5-TeO2 (M=Zn, Mg, Ca, Sr, Ba) glasses

Tomokatsu Hayakawa, Toshiki Suhara, Takeshi Fujiwara, Masayuki Nogami, Philippe Thomas

Journal:

physica status solidi (c)

Year:

2011

Language:

english

File:

PDF, 288 KB

english, 2011

26

Primary central nervous system lymphoma in Japan

Toru Hayakawa, Kintomo Takakura, Hiroshi Abe, Takashi Yoshimoto, Ryuichi Tanaka, Kenichiro Sugita, Haruhiko Kikuchi, Tohru Uozumi, Tomokatsu Hori, Hitoshi Fukui, Yukitaka Ushio, Kazuhiro Nomura, Masao

Journal:

Journal of Neuro-Oncology

Year:

1994

Language:

english

File:

PDF, 1.44 MB

english, 1994

27

Spectral Hole-Burning in Femtosecond Laser-Irradiated Eu3+-Doped Aluminosilicate Glasses

Gil Jae Park, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Sol-Gel Science and Technology

Year:

2005

Language:

english

File:

PDF, 114 KB

english, 2005

28

Eu3+-fluorescence properties in nano-crystallized SnO2-SiO2glass-ceramics

Virginie Gueu, Hongpeng You, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Sol-Gel Science and Technology

Year:

2007

Language:

english

File:

PDF, 846 KB

english, 2007

29

Copper reduction and hydroxyl formation by hydrogen process in alumino-silicate glasses

Kleine Guilherme, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Physics and Chemistry of Solids

Year:

2011

Language:

english

File:

PDF, 820 KB

english, 2011

30

High luminescence quantum efficiency of Eu3+-doped SnO2–SiO2 glasses due to excitation energy transfer from nano-sized SnO2 crystals

Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Science and Technology of Advanced Materials

Year:

2005

Language:

english

File:

PDF, 307 KB

english, 2005

31

Comparison of temperature dependence of the fluorescence of Sm2+-ion doped in different hosts

Hongwei Song, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Luminescence

Year:

1999

Language:

english

File:

PDF, 145 KB

english, 1999

32

Influence of adsorbed CdS nanoparticles on 5D0→7FJ emissions in Eu3+-doped silica gel

Tomokatsu Hayakawa, S Tamil Selvan, Masayuki Nogami

Journal:

Journal of Luminescence

Year:

2000

Language:

english

File:

PDF, 151 KB

english, 2000

33

Thermal and optical hole-filling in a Sm2+-doped aluminosilicate glass

Hongwei Song, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Optics Communications

Year:

1999

Language:

english

File:

PDF, 295 KB

english, 1999

34

Hydrogen Gas Permeation Through Al2O3–SiO2 GlassesContaining Metal Ions

Masayuki Nogami, Hiromasa Shiiba, Guihlherme A. Kleine, Masanobu Nakayama, Tomokatsu Hayakawa

Journal:

Journal of the American Ceramic Society

Year:

2010

Language:

english

File:

PDF, 471 KB

english, 2010

35

Structures and Third-Order Optical Nonlinearities of BiO1.5–WO3–TeO2 Glasses

Takeshi Fujiwara, Tomokatsu Hayakawa, Masayuki Nogami, Philippe Thomas

Journal:

Journal of the American Ceramic Society

Year:

2011

Language:

english

File:

PDF, 988 KB

english, 2011

36

Photoluminescence Properties and 5D0 Decay Analysis of LaF3:Eu3+ Nanocrystals Prepared by Using Surfactant Assist

Xiaoting Zhang, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

International Journal of Applied Ceramic Technology

Year:

2011

Language:

english

File:

PDF, 1.06 MB

english, 2011

37

Mechanical properties of polylactic acid composites containing ß-Ca(PO3)2 fibers in simulated body fluid

Toshihiro Kasuga, Shin-Ya Ozaki, Tomokatsu Hayakawa, Masayuki Nogami, Yoshihiro Abe, Yoshio Ota

Journal:

Journal of Materials Science Letters

Year:

1999

Language:

english

File:

PDF, 132 KB

english, 1999

38

Prospects of Sol-Gel Process for Spectral Hole-Burning Glasses

Masayuki Nogami, Takehito Nagakura, Tomokatsu Hayakawa, Toshihiro Kasuga

Journal:

Journal of Sol-Gel Science and Technology

Year:

2000

Language:

english

File:

PDF, 39 KB

english, 2000

39

Energy Transfer Between Eu3+ Ions and CdS Quantum Dots in Sol-Gel Derived CdS/SiO2 : Eu3+ Gel

Tomokatsu Hayakawa, S. Tamil Selvan, Masayuki Nogami

Journal:

Journal of Sol-Gel Science and Technology

Year:

2000

Language:

english

File:

PDF, 56 KB

english, 2000

40

Optical Second Harmonic Generation and Relaxation Dynamics of Aligned Azo-Dyes in Sol-Gel Derived Organic-Inorganic Film

Dai Imaizumi, Tomokatsu Hayakawa, Toshihiro Kasuga, Masayuki Nogami

Journal:

Journal of Sol-Gel Science and Technology

Year:

2000

Language:

english

File:

PDF, 52 KB

english, 2000

41

Hydrogen Gas Sensing of High Electrical Conducting-P2O5-SiO2 Glasses Prepared by Sol-Gel Process

Hiromi Matsushita, Ritsuko Nagao, Masayuki Nogami, Toshihiro Kasuga, Tomokatsu Hayakawa

Journal:

Journal of Sol-Gel Science and Technology

Year:

2000

Language:

english

File:

PDF, 51 KB

english, 2000

42

Room Temperature Persistent Spectral Hole-Burning in Sol-Gel-Derived Glasses Doped with Eu3+Ions

Masayuki Nogami, Tomokatsu Hayakawa

Journal:

Journal of Sol-Gel Science and Technology

Year:

2003

Language:

english

File:

PDF, 62 KB

english, 2003

43

Sol−Gel Derived Gold Nanoclusters in Silica Glass Possessing Large Optical Nonlinearities

Selvan, S. Tamil, Hayakawa, Tomokatsu, Nogami, Masayuki, Kobayashi, Yoshio, Liz-Marzán, Luis M., Hamanaka, Yasushi, Nakamura, Arao

Journal:

Journal of Physical Chemistry B

Year:

2002

Language:

english

File:

PDF, 181 KB

english, 2002

44

Controlled synthesis and properties of palladium nanoparticles

Long, Nguyen Viet, Hayakawa, Tomokatsu, Matsubara, Takashi, Chien, Nguyen Duc, Ohtaki, Michitaka, Nogami, Masayuki

Journal:

Journal of Experimental Nanoscience

Year:

2012

Language:

english

File:

PDF, 1.71 MB

english, 2012

45

Apatite formation on CO2 laser irradiated titanium oxide films

El-Sayed Ghaith, Tomokatsu Hayakawa, Toshihiro Kasuga, Masayuki Nogami

Journal:

Materials Letters

Year:

2006

Language:

english

File:

PDF, 260 KB

english, 2006

46

Metal oxide doping effects on Raman spectra and third-order nonlinear susceptibilities of thallium–tellurite glasses

Tomokatsu Hayakawa, Motohiro Koduka, Masayuki Nogami, Jean René Duclère, Andrei P. Mirgorodsky, Philippe Thomas

Journal:

Scripta Materialia

Year:

2010

Language:

english

File:

PDF, 621 KB

english, 2010

47

Nonlinear optical properties of gold nanoparticles selectively introduced into the periodic microdomains of block copolymers

Tsuchiya, Kosuke, Nagayasu, Satoshi, Okamoto, Shigeru, Hayakawa, Tomokatsu, Hihara, Takehiko, Yamamoto, Katsuhiro, Takumi, Ichi, Hara, Shigeo, Hasegawa, Hirokazu, Akasaka, Satoshi

Journal:

Year:

2008

Language:

english

File:

PDF, 2.83 MB

english, 2008

48

Optical bistability of stimulated-emission lines in Sm^3+-doped glass microspheres

Hayakawa, Tomokatsu, Ooishi, Hiroyuki, Nogami, Masayuki

Journal:

Year:

2001

Language:

english

File:

PDF, 87 KB

english, 2001

49

Effect of counter ions on the reduction process of Sm3+ ions in TiO2–ZrO2–Al2O3–SiO2 glasses

Go Kawamura, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Alloys and Compounds

Year:

2006

Language:

english

File:

PDF, 94 KB

english, 2006

50

Influences of Al3+ and Eu3+ concentration on PSHB properties of melt-quenched Al2O3–SiO2 glasses

Gil Jae Park, Tomokatsu Hayakawa, Masayuki Nogami

Journal:

Journal of Alloys and Compounds

Year:

2006

Language:

english

File:

PDF, 146 KB

english, 2006