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2012
  1. Ryotaro Ozaki and Hiroshi Moritake
    Wavelength and bandwidth tunable photonic stopband of ferroelectric liquid crystals
    Opt. Express, Vol.20, No.6, 2012, pp.6191-6196.


2011
  1. H. Moritake, R. Ozaki, T. Kamei, and Y. Utsumi
    Effective Dielectric Permittivity of Coplanar Waveguide Type Microwave Phase Shifter Using Ferroelectric Liquid Crystal
    Mol. Cryst. Liq. Cryst., Vol.542, 2011, pp.158[680]-166[688].

  2. T. Kamei, M. Yokota, R. Ozaki, H. Moritake, and N. Onodera
    Microstrip Array Antenna with Liquid Crystals Loaded Phase Shifter
    Mol. Cryst. Liq. Cryst., Vol.542, 2011, pp.167[689]-175[697].

  3. Ryotaro Ozaki, Hiroshi Moritake, Katsumi Yoshino, and Anvar A. Zakhidov
    Light Propagation in Liquid Crystal Infiltrated Two-Dimensional Photonic Crystal at a High-Order Photonic Band
    Mol. Cryst. Liq. Cryst., Vol.545, 2011, pp.67[1291]-76[1300].

  4. Ryotaro Ozaki, Nobuhiro Uno, and Hiroshi Moritake
    Quasi-Two-Dimensional Optical Confinement in a Cholesteric Liquid Crystal Infiltrated Optical Fiber
    Jpn. J. Appl. Phys., Vol. 50, 2011, 111601.


2010
  1. Yo Inoue, Yuko Matsuhisa, Hiroyuki Yoshida, Ryotaro Ozaki, Hiroshi Moritake, Akihiko Fujii, and Masanori Ozaki
    Electric Field Dependence of Lasing Wavelength in Cholesteric Liquid Crystal with an In-Plane Helix Alignment
    Mol. Cryst. Liq. Cryst., Vol.516, 2010, pp.182-189.

  2. Masayoshi Ojima, Yasuhiro Ogawa, Ryotaro Ozaki, Hiroshi Moritake, Hiroyuki Yoshida, Akihiko Fujii, and Masanori Ozaki
    Finite-Difference Time-Domain Analysis of Polarization-Dependent Transmission in Cholesteric Blue Phase II
    Appl. Phys. Express, Vol. 3, 2010, 032001.

  3. Ryotaro Ozaki, Masashi Aoki, Katsumi Yoshino, Kohji Toda, and Hiroshi Moritake
    Effective viscosity for nematic-liquid-crystal viscosity measurement using a shear horizontal wave
    Phys. Rev. E 81, 061703 (2010)


2009
  1. Ryotaro Ozaki, Toshikazu Shinpo, Hiroshi Moritake, Katsumi Yoshino, and Masanori Ozaki
    Optical Properties of Nanoimprinted Grating with Nematic Liquid Crystal
    Mol. Cryst. Liq. Cryst., Vol.507, 2009, pp.234-244.

  2. Ryotaro Ozaki, Toshikazu Shinpo, and Hiroshi Moritake
    Influence of Rapid Thermal Annealing on Molecular Orientation of Planar Cholesteric Liquid Crystal
    Mol. Cryst. Liq. Cryst., Vol. 510, 2009, pp.1250-1259.

  3. Yozo Utsumi, Nguyen Thanh Bach, Toshihisa Kamei, Ryotaro Ozaki, and Hiroshi Moritake
    Comparison of Microwave Measurements and Theoretical Calculations of Dielectric Birefringence for a Liquid Crystal Loaded CPW-FE Phase Shifter
    Mol. Cryst. Liq. Cryst., Vol. 510, 2009, pp.1331-1347.

  4. 内海 要三, Nguyen Thanh Bach, 亀井 利久, 尾崎 良太郎, 森武 洋
    液晶装荷CPW-FE移相器における誘電異方性と応答時間のマイクロ波測定および理論計算
    信学論, Vol.J92-C, No.12, 2009, pp.778-788.


2008
  1. Ryotaro Ozaki, Toshikazu Shinpo, Katsumi Yoshino, Masanori Ozaki, and Hiroshi Moritake
    Tunable Liquid Crystal Laser Using Distributed Feedback Cavity Fabricated by Nanoimprint Lithography
    Appl. Phys. Express, Vol. 1, 2008, 012003.

  2. Ryotaro Ozaki, Toshikazu Shinpo, Masanori Ozaki and Hiroshi Moritake
    Lasing in Cholesteric Liquid Crystal Oriented by Acoustic Streaming
    Jpn. J. Appl. Phys., Vol. 47, No.2, pp.1363-1366.

  3. Hiroshi Moritake, Satoshi Morita, Ryotaro Ozaki, Toshihisa Kamei and Yozo Utsumi
    Microwave Phase Shifter Using Ferroelectric Liquid Crystal
    Jpn. J. Appl. Phys., Vol. 47, No.2, pp.1367-1370.

  4. Ryotaro Ozaki, Toshikazu Shinpo, and Hiroshi Moritake
    Improvement of Orientation of Planar Cholesteric Liquid Crystal by Rapid Thermal Processing
    Appl. Phys. Lett., Vol. 92, pp.163304-1 - 163304-3


2007
  1. Yuko Matsuhisa, Ryotaro Ozaki, Yuuki Takao and Masanori Ozaki
    Linearly polarized lasing in one-dimensional hybrid photonic crystal containing cholesteric liquid crystal
    J. Appl. Phys., Vol. 101, 2007, 033120.

  2. Ryotaro Ozaki, Hiroshi Moritake, Katsumi Yoshino and Masanori Ozaki
    Analysis of defect mode switching response in one-dimensional photonic crystal with a nematic liquid crystal defect layer
    J. Appl. Phys. Vol. 101, 2007, 033503.

  3. Yuko Matsuhisa, Yuhua Huang, Ying Zhou, Shin-Tson Wu, Ryotaro Ozaki, Yuuki Takao, Akihiko Fujii and Masanori Ozaki
    Low threshold and high efficiency lasing upon band-edge excitation in a cholesteric liquid crystal
    Appl. Phys. Lett., Vol. 90, 2007, 091114.

  4. Ryotaro Ozaki, Toshikazu Shinpo, Masanori Ozaki and Hiroshi Moritake
    Reorientation of Cholecteric Liquid Crystal Molecules Using Acoustic Streaming
    Jpn. J. Appl. Phys., Vol. 46, No.20, pp.L489-L491.

  5. Hiroshi Moritake, Satoshi Morita, Ryotaro Ozaki, Toshihisa Kamei and Yozo Utsumi
    Fast Switching Microwave Phase Shifter of Coplanar Waveguide Using Ferroelectric Liquid Crystal
    Jpn. J. Appl. Phys., Vol. 46, No.21, pp.L519-L521.

  6. Ryotaro Ozaki, Masashi Aoki, Katsumi Yoshino, Kohji Toda and Hiroshi Moritake
    Dynamic Response of Share Horizontal Wave Propagating in Liquid Crystal Cell to Molecular Reorientation
    Jpn. J. Appl. Phys., Vol. 46, No. 7B, pp.4734-4738.

  7. Hiroshi Moritake, Ryotaro Ozaki, Katsumi Yoshino, and Kohji Toda
    Measurement of Mechanical Resonance in Freely Suspended Ferroelectric Liquid Crystal Film
    Jpn. J. Appl. Phys., Vol. 46, No. 10B, pp.7128-7131.

  8. M. Ozaki, Y. Matsuhisa, H. Yoshida, R. Ozaki, and A. Fujii
    Photonic crystals based on chiral liquid crystal
    phys. stat. sol. (a) 204, No. 11, pp.3777-3789.

  9. 吉野 勝美, 尾崎 良太郎, 武田 寛之
    液晶フォトニック結晶
    液晶 Vol. 11, No. 3, 215(35)-223(43).

  10. Satoshi Morita, Ryotaro Ozaki, Hiroshi Moritake, Toshihisa Kamei and Yozo Utsumi
    Microwave Variable Phase Shifter of Microstrip and Coplanar Waveguide Structures Using Ferroelectric Liquid Crystal
    Mol. Cryst. Liq. Cryst., Vol. 476, pp.105[351]-113[359], 2007

  11. Ryotaro Ozaki, Masashi Aoki, Hiroshi Moritake, Kohji Toda and Katsumi Yoshino
    Molecular Direction Dependence of Shear Horizontal Wave Propagation in Nematic Liquid Crystal
    Mol. Cryst. Liq. Cryst., Vol. 477, pp.101[595]-112[606], 2007

  12. Masashi Aoki, Ryotaro Ozaki, Hiroshi Moritake, Kohji Toda and Katsumi Yoshino
    Viscosity Response Measurement of Nematic Liquid Crystal under Application of Electric Field Using Shear Horizontal Wave
    Mol. Cryst. Liq. Cryst., Vol. 477, pp.113[607]-124[618], 2007

  13. Yuko Matsuhisa, Yuuki Takao, Masanori Ozaki, and Ryotaro Ozaki
    Defect Mode Analysis in One-dimensional Dual Photonic Crystal with Helix
    Mol. Cryst. Liq. Cryst., Vol. 478, pp.163[919]-174[930], 2007


2006
  1. Ryotaro Ozaki, Takuji Sanda, Hiroyuki Yoshida, Yuko Matsuhisa, Masanori Ozaki and Katsumi Yoshino
    Defect Mode in Cholesteric Liquid Crystal Consisting of Two Helicoidal Periodicities
    Jpn. J. Appl. Phys., Vol. 45, No. 1B, 2006, pp. 493-496.

  2. Ryotaro Ozaki, Masashi Aoki, Hiroshi Moritake, Katsumi Yoshino and Kohji Toda
    Evaluation of Nematic Liquid Crystal Director Orientation in Vicinity of Glass Substrate Using Shear Horizontal Wave Propagation
    Jpn. J. Appl. Phys., Vol. 45, No. 5B, 2006, pp. 4662-4666.

  3. Hiroyuki Yoshida, Ryotaro Ozaki, Katsumi Yoshino and Masanori Ozaki
    Effect of introducing multiple chiral defects on the optical properties of cholesteric liquid crystals
    Thin Solid Films, Vol. 509, Issues 1-2, 2006, pp. 197-201.

  4. Yuko Matsuhisa, Ryotaro Ozaki, Katsumi Yoshino and Masanori Ozaki
    Laser action in one-dimensional double periodic structure with cholesteric liquid crystal
    Thin Solid Films, Vol. 509, Issues 1-2, 2006, pp. 189-192.

  5. Katsumi Yoshino, Ryotaro Ozaki, Jun Matsumoto, Masayoshi Ojima, Shinji Hiwatashi, Yuko Matsuhisa and Masanori Ozaki
    Properties of Liquids and Liquid Crystals in Nano-Scale Space
    IEEE Transactions on Dielectrics and Electrical Insulation (TDEI), Vol. 13, No. 3, 2006, pp. 678-686.

  6. Ryotaro Ozaki, Yuko Matsuhisa, Hiroyuki Yoshida, Katsumi Yoshino and Masanori Ozaki
    Optical Properties and Electric Field Enhancement in Cholesteric Liquid Crystal Containing Different Periodicities
    J. Appl. Phys., Vol. 100, 2006, 023102.

  7. Yuko Matsuhisa, Ryotaro Ozaki, Katsumi Yoshino and Masanori Ozaki
    High-Q Defect Mode and Laser Action in One-dimensional Hybrid Photonic Crystal Containing Cholesteric Liquid Crystal
    Appl. Phys. Lett., Vol. 89, 2006, 101109.

  8. Yuko Matsuhisa, Ryotaro Ozaki, Wolfgang Haase, Katsumi Yoshino and Masanori Ozaki
    Light Localization and Lasing Characteristics in One-dimensional Photonic Crystal with a Helix Defect of Ferroelectric Liquid Crystal
    Ferroelectrics., Vol. 344, 2006, Pages: 239 - 245.


2005
  1. Ryotaro Ozaki, Masanori Ozaki, Katsumi Yoshino
    Light propagation analysis and high-speed electro-optic switching in one-dimensional photonic crystal with nematic liquid crystal defect layer
    Electronics and Communications in Japan (Part II: Electronics), Volume 88, Issue 4 (2005) 46-53.

  2. Yuko Matsuhisa, Ryotaro Ozaki, Masanori Ozaki and Katsumi Yoshino
    Single-Mode Lasing in One-Dimensional Periodic Structure Containing Helical Structure as a Defect
    Jpn. J. Appl. Phys., 44 (2005) L629-L632.

  3. Ryotaro Ozaki, Yuko Matsuhisa, Masanori Ozaki and Katsumi Yoshino
    Laser Action Based on Electrically Controllable Defect Mode in One-Dimensional Photonic Crystal Containing Conducting Polymer and Liquid Crystal Defect Layers
    Mol. Cryst. Liq. Cryst., 433 (2005) 237-245.

  4. Ryotaro Ozaki, Hirotaka Miyoshi, Masanori Ozaki and Katsumi Yoshino
    Tunable Defect Mode in One-Dimensional Photonic Crystal with Liquid Crystal Defect Layer
    Mol. Cryst. Liq. Cryst., 433 (2005) 247-257.

  5. Ryotaro Ozaki, Yuko Matsuhisa, Masanori Ozaki and Katsumi Yoshino
    Low Driving Voltage Tunable Laser based on One-dimensional Photonic Crystal containing Liquid Crystal Layer
    Mol. Cryst. Liq. Cryst., 441 (2005) 87 - 95.


2004
  1. 尾崎良太郎，尾崎雅則，吉野勝美
    ネマチック液晶欠陥層を有する一次元フォトニック結晶の光伝搬解析と高速光スイッチング
    信学論, J87-C(1) (2004) 166-173.

  2. Ryotaro Ozaki, Tatsunosuke Matsui, Masanori Ozaki, Katsumi Yoshino
    Electrically wavelength tunable laser based on one-dimensional structure with liquid crystal defect layer
    Electronics and Communications in Japan (Part II: Electronics), Volume 87, Issue 2 (2004) 1-8.

  3. Ryotaro Ozaki, Yuko Matsuhisa, Masanori Ozaki, Katsumi Yoshino
    Electrically tunable lasing based on defect mode in one-dimensional photonic crystal with conducting polymer and liquid crystal defect layer
    Appl. Phys. Lett., 84 (2004) 1844-1846.

  4. Ryotaro Ozaki, Tatsunosuke Matsui, Masanori Ozaki, Katsumi Yoshino
    Optical property of electro-tunable defect mode in 1D periodic structure with light crystal defect layer
    Electronics and Communications in Japan (Part II: Electronics), Volume 87, Issue 5 (2004) 24-31.

  5. Tatsunosuke Matsui, Ryotaro Ozaki, Kazuhiro Funamoto, Masanori Ozaki and Katsumi Yoshino
    Flexible Lasers Made From Cholesteric Liquid Crystal Polymers
    Mol. Cryst. Liq. Cryst., 413 (2004) 507-514.

  6. Ryotaro Ozaki, Masanori Ozaki and Katsumi Yoshino
    Defect Mode in One-dimensional Photonic Crystal with In-plane Switchable Nematic Liquid Crystal Defect Layer
    Jpn. J. Appl. Phys., 43 (2004) L 1477-L 1479.

  7. Ryotaro Ozaki, Hirotaka Miyoshi, Masanori Ozaki and Katsumi Yoshino
    Fast Electrooptic Response Based on Defect Mode Switching in One-Dimensional Photonic Crystal Containing Nematic Liquid Crystal and Ferroelectric Liquid Crystal as a Defect Layer
    ferroelectrics, 312 (2004) p 63-69.

  8. Masanori Ozaki, Ryotaro Ozaki, Tatsunosuke Matsui and Katsumi Yoshino
    Laser actions in nano-helical-structured liquid crystals
    Proceedings of SPIE 5518 (2004) 44-50.

  9. Katsumi Yoshino, Hiroyuki Takeda, Masahiro Kasano, Shigenori Satoh, Tatsunosuke Matsui, Ryotaro Ozaki, Akihiko Fujii, Masanori Ozaki, Akira Kose
    Novel tunable optical properties of liquid crystals, conjugated molecules and polymers in nanoscale periodic structures as photonic crystals
    Macromolecular Symposia, 212 (2004) 179-190.


2003
  1. 尾崎良太郎，松井龍之介，尾崎雅則，吉野勝美
    液晶欠陥層を有する1次元周期構造の局在準位の光学特性と電界制御
    信学論, J86-C(5) (2003) 511-517.

  2. Masanori Ozaki, Ryotaro Ozaki, Tatsunosuke Matsui and Katsumi Yoshino
    Twist Defect Mode Lasing in Photopolymerized Cholesteric Liquid Crystal
    Jpn. J. Appl. Phys., 42 (2003) L472-L475.

  3. Ryotaro Ozaki, Tatsunosuke Matsui, Masanori Ozaki and Katsumi Yoshino
    Electrically color-tunable defect mode lasing in one-dimensional photonic band gap system containing liquid crystal
    Appl. Phys. Lett., 82 (2003) 3593-3595.

  4. Ryotaro Ozaki, Masanori Ozaki and Katsumi Yoshino
    Defect Mode Switching in One-Dimensional Photonic Crystal with Nematic Liquid Crystal as Defect Layer
    Jpn. J. Appl. Phys., 42 (2003) L669-L671.

  5. 尾崎良太郎，松井龍之介，尾崎雅則，吉野勝美
    電界により波長可変な液晶欠陥層を有する一次元周期構造レーザ
    信学論, J86-C(6) (2003) 616-622.

  6. Aloys O. Akumu, Hajime Masai, Futoshi Adachi, Ryotaro Ozaki, Haruo Ihori, Masaharu Fujii and Kiyomitsu Arii
    Analysis of Partial Discharge Acoustic Wave Propagation in a Model Transformer
    Jpn. J. Appl. Phys., 42 (2003) 3686-3689.

  7. Aloys O. Akumu, Hajime Masai, Futoshi Adachi, Ryotaro Ozaki, Haruo Ihori, Masaharu Fujii and Kiyomitsu Arii
    Wavelet Analysis of Partial Discharge Acoustic Signals in a Model Transformer
    Jpn. J. Appl. Phys., 42 (2003) 5347-5352.

  8. Masanori Ozaki, Masahiro Kasano, Kazuhiro Funamoto, Ryotaro Ozaki, Tatsunosuke Matsui, and Katsumi Yoshino
    Tunable lasing in doped liquid crystals with one-dimensional periodic structure
    Proc. SPIE Int. Soc. Opt. Eng., 5213 (2003) 111-122.


2002
  1. Tatsunosuke Matsui, Ryotaro Ozaki, Kazuhiro Funamoto, Masanori Ozaki and Katsumi Yoshino
    Flexible mirrorless laser based on a free-standing film of photopolymerized cholesteric liquid crystal
    Appl. Phys. Lett., 81 (2002) 3741-3743.

  2. Ryotaro Ozaki, Tatsunosuke Matsui, Masanori Ozaki and Katsumi Yoshino
    Electro-Tunable Defect Mode in One-Dimensional Periodic Structure Containing Nematic Liquid Crystal as a Defect Layer
    Jpn. J. Appl. Phys., 41 (2002) L1482-L1484.