Original Papers Invited Lectures International Conferences

Reprint Order

I. Review Articles

(7) Poly(olefin sulfone)s
Takeo Sasaki
Alkenes and Olefins (R. Davarnejad and B. Sajjadi (Ed) InTech),
in press.

(6) Dynamic Amplification of Optical Signals by Photorefractive Ferroelectric Liquid Crystals
Takeo Sasaki
Ferroelectric Materials - Synthesis and Characterization ( Aime Pelaiz Barranco (Ed) InTech), Chapter 6, 125-150 (2015).
Open Access Book download

(5) Photorefractive Effect in Ferroelectric Liquid Crystals
T. Sasaki and Y. Naka
Optical Review, 21, 99-109 (2014). Invited review download

(4) Photorefractive Effect in Ferroelectric Liquid Crystals
T. Sasaki
Advances in Ferroelectrics　 (T. Jevtic (Ed.) INTECH), Chapter 22, 499-532 (2012).
Open Access Book 　download

(3) Photorefractive Ferroelectric Liquid Crystals
T. Sasaki
Ferroelectrics / Physical Effects　 (M. Lallart (Ed.) INTECH), Chapter 21, 487-506 (2011).
Open Access Book　　download

(2) Photorefractive Effect of Ferroelectric Liquid Crystals
T. Sasaki
The Chemical Record, 6, 43-51 (2006).   

(1) Photorefractive Effect of Liquid Crystalline materials
T. Sasaki,
Polymer Journal, 37, 797-812 (2005).

II. Original Papers

(92) Photorefractive Effects in Ferro- and Flexoelectric Liquid Crystal Blends Containing Photoconductive Chiral Dopants with Lactate and Hydroxybutyrate Structures
Maho Hirakawa; Atsushi Seki; Khoa Van Le; Yumiko Naka; Takeo Sasaki
ACS Appl. Opt, Mater. 3 (2), 284-295 (2025).

(91) Development of high-sensitivity photorefractive liquid crystals and their application to laser ultrasonics: achieving noise-free measurements
Sasaki, T., Takashi, T., Suzuki, K., Ikeda, G., Kawano, A., Ishii, Y., Le, L. V., Naka, Y.
Liq. Cryst. 1-10 (2024)

(90) Photorefractive liquid crystals and their application to laser ultrasonics. Molecular Crystals and Liquid Crystals
T. Sasaki, K.V. Le, Y. Naka
Mol. Cryst. Liq. Cryst. 768 (17), 747-960 (2024).

(89) Photodegradation of self-immolating polymers as a potential solution to particulate contamination
Alexandra K. Stapley, Sydney A. McFarland, Osemudiamhen D. Amienghemhen, Joshua J. Vawdrey, Kendall J. Mitchell, Takeo Sasaki, Walter F. Paxton
Sol. Energy Mater. Sol. Cells. 272, 112902 (2024).

(88) フォトリフラクティブ液晶の開発とレーザー超音波法への応用
佐々木健夫
液晶　28 (1), 3-10 (2024).

(87) Agarose hydrogels reinforced by chromonic aggregates
K. V. Le, K. Yamazaki, H. Takemoto, K. Ishiyama, Y. Naka, T. Sasaki
Mol. Cryst. Liq. Cryst., 762, 123-129 (2023).

(86) Photorefractive flexoelectric liquid crystal mixtures and their application to laser ultrasonics
Takeo Sasaki, Takaaki Yagami, Toshinobu Takashi, Kaita Suzuki, Gouta Ikeda, Yukihiro Ishii, Khoa Van Le, and Yumiko Naka
Opt. Mater. Express,. 13, 728-738 (2023).

(85) Photorefractive effects in smectic liquid crystals and their application to laser ultrasonics
T. Sasaki, T. Takashi, G. Ikeda, J. Watanabe, M. Nagaoka, S. Yamazaki, Y. Ishii, K. V. Le, Y. Naka
Asia. J. Phys., 31, 1035-1044 (2022).

(84) Enhanced chromonic stacking assisted by a hydrogel network
Hiroki Shibakura, Khoa V. Le, Yumiko Naka, Takeo Sasaki
Mol. Cryst. Liq. Cryst., 741, 53-62 (2022).

(83) Observation and simulation of toron polymorphism: Effects of surface anchoring, elasticity and electric field in cholesterics with smectic-A phase beneath
Khoa V. Le, Satoshi Aya, Junichi Kougo, Sawako Takahashi, Tomoyo Takezoe, Yumiko Naka, Takeo Sasaki
J. Mol. Liq.,. 349, 118454 (2022).

(82) Photo-induced change in alignment of mesogens using reduction of viologens as a trigger
Satoshi Arai, Mikihiro Kawahara, Khoa V. Le, Takeo Sasaki, Yumiko Naka
Mol. Cryst. Liq. Cryst. 756, 27-37 (2022).

(81) Molecular Design of Viologens to Exhibit Low-Order Liquid-Crystalline Phases
Yumiko Naka, Satoshi Arai, Yusuke Ohgi, Minami Takahashi, Khoa V. Le, Takeo Sasaki
Mater. Adv., 3, 2131-2138 (2022).

(80) Effect of the concentration of chiral compound on the photorefractive effect of flexoelectric smectic liquid crystal blends
Takeo Sasaki, Takuya Hara, Maho Hirakawa, Kaita Suzuki, Khoa Van Le & Yumiko Naka
Mol. Cryst. Liq. Cryst. 740, 1-16 (2022).

(79) Photorefractive smectic liquid crystalline mixtures and their application to remote sensing
Takeo Sasaki, Maho Hirakawa, Kaita Suzuki, Khoa Van Le, and Yumiko Naka
Asia. J. Phys. 30, 999-1005 (2021).

(78) Bulk Alignment of Chromonic Aggregates During Swelling of Hydrogels
Koji Shiraishi, Sawako Takahashi, Khoa V. Le, Yumiko Naka, Takeo Sasaki
Macromol. Rapid Commun., 41, 1900631 (2020).

(77) Nonlinear resistivity in epoxy composites containing Mn‐based ferrite magnetic particles
Hidehito Matsuzaki, Akifumi Suzuki, Yumiko Naka, Khoa V. Le, Takeo Sasaki
Appl. Poly. Sci., 137, 48229 (2020). 　Cover Article

(76) Nonlinear Resistivity in Epoxy Composites Containing ZnO Particles and Secondary Particles
Hidehito Matsuzaki, Yumiko Naka, Khoa V. Le, Takeo Sasaki
IEEJ Trans. FM., 139, 453-460 (2019).

(75) Role of each part of cyanobiphenyl-containing polymers in porous-film preparation by using the breath-figure method
Yumiko Naka, Lisa Nagashima, Hiromu Takayama, Khoa, V. Le, Takeo Sasaki
Liq. Cryst., 47, 1139-1144 (2019).

(74) Simultaneous formation behaviour of surface structures and molecular alignment by patterned photopolymerisation
Sayuri Hashimoto, Miho Aizawa, Norihisa Akamatsu, Takeo Sasaki, Atsushi Shisido
Liq. Cryst., 46, 1995-2002 (2019).

(73) Direct fabrication of a q-plate array by scanning wave photopolymerization
Miho AizawaMegumi OtaKyohei Hisano, Norihisa Akamatsu, Takeo Sasaki, Christopher J Barrett, Atsushi Shishido
J. Opt. Soc. Am. B, 36, D47-D51 (2019).

(72) Molecular Disign for Preparation of Hexagonal-Ordered Porous Films Based on Side-Chain-Type Liquid Crystallne Star Polymer
Y. Naka, H. Takayama, T. Koyama, K. V. Le, and T. Sasaki
Langmuir, 34, 6210-6216 (2018).

(71) Chiral lyotropic chromonic liquid crystal composed of disodium cromoglycate doped with water-soluble chiral additives
T. Shirai, S. Min, K. Nakamura, A. Yamaguchi, Y. Naka, T. Sasaki, C. Noel, and K. V. Le
Soft Matter, 14, 9, 1511-1516 (2018).

(70) Enhancement of Photosensitivity of Photorefractive Ferroelectric Liquid Crystal Blends to Green and Red Wavelength Regions Using Oligothiophene Photoconductive Dopants
T. Sasaki, S.Morino, A.Sumiya, Y. Yamamoto, M. Nakano, K. V. Le, Y. Naka, and T. Sassa
J. Phys. Chem. C, 121, 16951-16958 (2017).

(69) Laser irradiation durability of photorefractive ferroelectric liquid crystal blends containing terthiophene photoconductive chiral dopants
T. Sasaki, M. Yoshino, Y. Naka, K. V. Le and T. Sassa
RSC Adv., 6, 70573-70580 (2016).

(68) Dismantlable Thermosetting Adhesives Composed of a Cross-Linkable Poly(olefin sulfone) with a Photobase Generator
T. Sasaki, S. Hashimoto, N. Nogami, Y. Sugiyama, M. Mori, Y. Naka, and K. V. Le
ACS Appl. Mater. Interfaces, 8, 5580-5585 (2016).

(67) Dynamic Amplification of Light Signals in Photorefractive Ferroelectric Liquid Crystalline Mixtures
T. Sasaki, S. Kajikawa and Y. Naka
Faraday Discussions, 174, 203-218 (2014).

(66) Synthesis of Liquid-Crystalline Star Polymers with Sulfonyl Groups in the Central Core and Selective Degradation of their Cores by Base
Y. Naka , H. Kawamura, and T. Sasaki
Mol. Cryst. Liq. Cryst., 593, 141-150 (2014).

(65) Photoinduced Depolymerization of Poly(olefin sulfone)s Possessing Photo-base Generators in the Side-chain: Effect of Spacer-chain Length
Takeo Sasaki, Takumi Yoneyama, Shota Hashimoto, Sumie Takemura and Yumiko Naka
J. Polym. Sci. Part A: Polym. Chem., 51, 3873-3880 (2013).

(64) Real-time dynamic hologram in photorefractive ferroelectric liquid crystal with two-beam coupling gain coefficient of over 800 cm-1 and response time of 8 ms
T. Sasaki, M. Ikegami, T. Abe, D. Miyazaki, S. Kajikawa and Y. Naka
Appl. Phys. Lett., 102, 063306-063309 (2013).
Nature Research Highlight

(63) Formation of Hologram in Photorefractive Ferroelectric Liquid Crystals
T. Sasaki, M. Ikegami and Y. Naka
J. Photopolym. Sci. Technol., 25, 681-684 (2012).

(62) Photoinduced Depolymerization in Poly(olefin sulfone) Films Composed of Volatile Monomers Doped with a Photobase Generator
T. Sasaki, T. Kondo, M. Noro, K. Saida, H. Yaguchi and Y. Naka
.J. Polym. Sci. Part A: Polym. Chem., 50, 1462-1468 (2012).
Inside Cover Article

(61) Photorefractive Effect of Photoconductive Liquid Crystalline Mixtures Composed of Photoconductive Chiral Compounds and Liquid Crystal
T. Sasaki, D. Miyazaki, K. Akaike, M. Ikegami and Y. Naka
J. Mater. Chem., 21, 8678-8686 (2011).

(60) Influence of Photoconductivity on the Photorefractive Effect of Ferroelectric Liquid Crystal Mixtures
A. Katsuragi, E. Inoue and T. Sasaki
Mol. Cryat. Liq. Cryst., in press.

(59) Influence of the Physical Properties of Ferroelectric Liquid Crystal Mixtures on the Photorefractive Effect
A. Katsuragi, T. Abe, H. Endo and T. Sasaki
Mol. Cryst. Liq. Cryst., 533, 27-41 (2010).

(58) Atom Transfer Radical Polymerization of Graft Chains onto Polyethylene Film Initiated at Tribromomethyl Unit Introduced by Electron Beam Irradiation
M. Komatsu, T. Kawakami, J. Kanno, T. Sasaki
J. Appl. Polym. Sci., 119, 2533-2538 (2011).

(57) "Two-stage Grafting" to Polyethylene Fiber by Radiation-induced Graft Polymerization and ATRP
M. Komatsu, T. Kawakami, J. Kanno, T. Sasaki
J. Appl. Polym. Sci., 115, 3369-3375 (2010).

(56) Photorefractive Effect of Polymer-Stabilized Ferroelectric Liquid Crystals
T. Sasaki, Y. Nakazawa
J. Phys. Chem. C, 113, 5792-5798 (2009).

(55) Photorefractive Effect of Photoconductive-polymer Stabilized Ferroelectric Liquid Crystals
T. Sasaki, H. Hazato, A. Katsuragi, Y. Nakazawa
Mol. Cryst. Liq. Cryst., 503, 81-98 (2009).

(54) Photoinduced Depolymerization of Poly(olefin sulfone)s Possessing Base Amplifying Groups
T. Sasaki, H. Yaguchi,
J. Polym. Sci. Part A: Polym. Chem., 47, 602-613 (2009).

(53) Photorefractive Effect of Ferroelectric Liquid Crystals with Application of a Biased Alternating Electric Field
N. Moriya, and T. Sasaki
Mol. Cryst. Liq. Cryst., 482, 33-41 (2008).

(52) Photoinduced Depolymerization of Poly(olefin sulfone)s Possessing Photo-base Generating Groups in the Side-chain
H. Yaguchi, and T. Sasaki
Macromolecules, 40, 9332-9338 (2007).

(51) Photorefractive Effect of Ferroelectric Liquid Crystals with Application of Alternating Electric field
T. Sasaki, N. Moriya, and Y. Iwasaki
J. Phys. Chem. C, 111, 17646-17652 (2007).

(50) Relationship between Optical Properties of Immobilized Liquid Crystal Film and that of Polyimide Alignment Layer
M. Yamahara, M. Nakamura, N. Koide, and T. Sasaki
Mol. Cryat. Liq. Cryst., 473, 3-14 (2007).

(49) Relationship between Molecular Orientation of Rubbed Polyimide Alignment Layer and Immobilized Liquid Crystal Film Coated on The Alignment Layer
M. Yamahara, M. Nakamura, N. Koide, and T. Sasaki
Mol. Cryat. Liq. Cryst., 466, 39-52 (2007).

(48) Influence of Rubbing Condition of Polyimide Alignment Layer on Optical Anisotropy of Immobilized Liquid Crystal Film
M. Yamahara, M. Nakamura, N. Koide, and T. Sasaki
Liq. Cryst., 34, 381-387 (2007).

(47) Photosolubilization of Polyolefinsulfone Possessing Side Chain Oxime Ester Groups
H. Yaguchi, and T. Sasaki
Chem. Lett. 35, 760-761 (2006).

(46) Photorefractive Effect of Composites of Ferroelectric Liquid Crystal and Photoconductive Polymer
Y. Nakazawa, and T. Sasaki
Liq. Cryst., 33, 159-165 (2006).

(45) Photorefractive Effect in Liquid Crystalline Polymers Containing Hydrogen-Bonding Moiety
T. Sasaki, G. Fukunaga
Chem. Mater., 17, 3433-3438 (2005).

(44) Photorefractive Effect of Ferroelectric Liquid Crystals
T. Sasaki, O. Mochizuki, K. Noborio, T. Abe, Y. Nakazawa
proc, SPIE, 5741, 107-117 (2005). 

(43) Effect of the Introduction of Supramolecular Structure on the Photorefractive Properties of Liquid Crystalline Polymers
T. Sasaki, G. Fukunaga
proc. SPIE, 5518, 11-18 (2004).

(42) Influence of the Laser Incidence Condition on the Spontaneous Polarization Photorefractive Effect of Ferroelectric Liquid Crystals
T. Sasaki, O. Mochizuki, Y.　Nakazawa, K. Noborio
J. Phys. Chem. B, 108, 17083-17088 (2004).

(41) Formation of Dynamic Holograms Based on Spatial Modulation of Molecular Motions of Ferroelectric Liquid Crystals
T. Sasaki, O. Mochizuki, Y. Nakazawa, G. Fukunaga, T. Nakamura, K. Noborio
Appl. Phys. Lett., 85, 1329-1331 (2004).

(40) Spontaneous Polarization Vector Reorientation Photorefractive Effect in Ferroelectric Liquid Crystals
T. Sasaki, A. Katsuragi, Y. Nakazawa, G. Fukunaga, S. Yoshimura
Mol. Cryst. Liq. Cryst, 410, 117-127 (2004).

(39) Photorefractivity of Mixtures of a Ferroelectric Liquid Crystal and Photoconductive Polymers
Y. Nakazawa and T. Sasaki
Chem. Lett., 33, 242-243 (2004).

(38) Spontaneous polarization reorientation photorefractive effect in low-molecular-weight ferroelectric liquid crystal mixtures
T. Sasaki, A. Katsuragi, O. Mochizuki, Y. Nakazawa
proc. SPIE, 5216, 211-219 (2003). 

(37) Influence of the Properties of Ferroelectric Liquid Crystals on the Spontaneous Polarization Reorientation Photorefractive Effect
T. Sasaki, A. Katsuragi, O. Mochizuki, Y. Nakazawa
J. Phys. Chem. B, 107, 7659-7665 (2003).

(36) Spontaneous Polarization Reorientation Photorefractive Effect in Ferroelectric Liquid Crystals
T. Sasaki, A. Katsuragi, Y. Nakazawa, G. Fukunaga, S. Yoshimura
proc. SPIE, 4802, 65-75 (2002). 

(35) Spontaneous Polarization Vector Reorientation Photorefractivity in Mixtures of a Photoconductive Polymer and a Ferroelectric Liquid Crystal
T. Sasaki, K. Ohno, Y. Nakazawa
Macromolecules, 35, 4317-4321 (2002). 

(34) Spontaneous Polarization Reorientation Type Photorefractivity in Dye Doped Ferroelectric Liquid Crystals
T. Sasaki, A. Katsuragi, K. Ohno
J. Phys. Chem. B, 106, 2520-2525 (2002) 

(33) Photorefractive Properties of the Isotropic Phase of Cyanobiphenyl Side-chain Liquid Crystalline Polymers
T. Sasaki, T. Shimada, K. Tachibana
Chem. Lett., 324-325 (2002)

(32) Photorefractive Effect of Liquid Crystalline Polymers Possessing Azobenzene Chromophores with Chral and Achiral Substituents
T. Sasaki, R. Kai, A. Sato, Y. Ishikawa and T. Yoshimi
Mol. Cryat. Liq. Cryst., 373, 53-70 (2002) 

(31) Spontaneous Polarization Reorientation Type Photorefractivity in Ferroelectric Liquid Crystals
T. Sasaki, Y. Kino, M. Shibata, N. Mizusaki, A. Katsuragi, Y. Ishikawa and T. Yoshimi
Appl. Phys. Lett. 78, 4112-4114 (2001).

(30) Enhancement of Photorefractive Effect in the Isotropic Phase of Liquid Crystalline Polymers
T. Sasaki, K. Tachibana, K. Ono, T. Shimada, M. Kudo, A. Katsuragi, T. Furuta
Mol. Cryst. Liq. Cryst. 368, 345-350 (2001)

(29) Photorefractive Effect of the Isotropic Phase of Polymer Liquid Crystals
T. Sasaki
proc. SPIE, 3799, 14-21 (1999).

(28) Enhancement of Photorefractivity in the Isotropic Phase of Polymer Liquid Crystals
T. Sasaki, M. Goto, Y. Ishikawa and T. Yoshimi
J. Phys. Chem. B, 103, 1925-1929 (1999).

(27) Second Harmonic Generation of Side-chain Polymer Liquid Crystals Possessing Asymmetric Carbon Without Poling Treatment
T. Sasaki, Y. Ishikawa, T. Yoshimi, R. Kai, H. Kato and M. Matsuda
Mol. Cryst. Liq. Cryst, 309, 157-165 (1998). 

(26) Asymmetric Energy Exchange Observed in Two-Beam Coupling Experiment on Immobilized Films of Bilayer Amphiphiles Possessing Carbazole and Nonlinear Optical Chromophores
T. Sasaki, T. Yoshimi, M. Saga, and Y. Ishikawa
Chem. Lett., 1153-1154 (1997).

(25) Photorefractive Effect of Liquid Crystal Polymer Poly 4-methacryloyloxyhexyloxy(4'-nitro benzylidene)aniline
T. Sasaki, S. Hamada, Y. Ishikawa, and T. Yoshimi
Chem. Lett., 1183-1184 (1997). 

(24) Hyperpolarizabilities and Second Harmonic Generation of Side-chain Polymer Liquid Crystals Possessing Alkylsulfon-Substituted Stilbene and Azobenzene Chromophores.
T. Sasaki, Y. Ishikawa, T. Yoshimi, K. Makiguchi and M. Matsuda
Mol. Cryst. Liq. Cryst, 300, 97-111 (1997).

(23) Nitration of N-Confused Porphyrin
Y. Ishikawa, I. Yoshida, K. Akaiwa, E. Kouguchi, T. Sasaki, H. Furuta
Chem. Lett., 453-454 (1997). 

(22) Liquid Crystal Photonics: Optical Switching and Image Storage by Means of Nematic Liquid Crystals and Ferroelectric Liquid Crystals
T. Ikeda, O. Tsutsumi and T. Sasaki
Synthetic Metals, 81, 289-296 (1996). 

(21) Photochemical Control of Properties of Ferroelectric Liquid Crystals (1) Effect of Structure of Host Ferroelectric Liquid Crystals.
T. Sasaki and T. Ikeda
J. Phys. Chem., 99, 13002-13007 (1995).   

(20) Photochemical Control of Properties of Ferroelectric Liquid Crystals (2) Effect of Structure of Guest Photoresponsive Molecules
T. Sasaki and T. Ikeda
J. Phys. Chem., 99, 13008-13012 (1995).  

(19) Photochemical Control of Properties of Ferroelectric Liquid Crystals (3) Photochemical Control of Spontaneous Polarization and Electrooptic Effect.
T. Sasaki and T. Ikeda
J. Phys. Chem., 99, 13013-13018 (1995).  

(18) Photochemical Control of Properties of Ferroelectric Liquid Crystals: Photochemical Flip of Polarization
T. Sasaki, T. Ikeda, and K. Ichimura
J. Am. Chem. Soc., 116, 625-628 (1994).   

(17) Photochemical Switching og Polarization in 3-Ring Ferroelectric Liquid Crystalline Display Materials
T. Sasaki and T. Ikeda
Display&Imaging, 305-308 (1994).  

(16) Photochemical Switching of Polarization in Ferroelectric Liquid Crystals: Effect of Structure of Host FLCS
T. Sasaki and T. Ikeda
Ferroelectrics, 149, 343-351 (1993).  

(15) Photochemical Switching of Polarization in Ferroelectric Liquid-Crystal Films
T. Ikeda, T. Sasaki, and K. Ichimura
Nature, 361, 428-430 (1993).   

(14) Photoisomerization Observed by Means of Scanning Tunneling Microscopy
T. Umemoto, K. Ishikawa, H. Takezoe, A. Fukuda, T. Sasaki, T. Ikeda
Jpn. J. Appl. Phys., 32, L936-L939 (1993).  

(13) Photoisomerization and Thermal Isomerization Behavior of Azobenzene Derivatives in Liquid Crystalline Polymer Matrices
T. Sasaki, T. Ikeda, and K. Ichimura
Macromolecules, 26, 151-154 (1993).  

(12) Photochemical Control of Switching Behaviors of Ferroelectric Polymer Liquid Crystals: Poly(2-methylbutyl 4'-(10-acryloyloxy-decyloxy)- biphenyl-4-carboxylate)
T. Ikeda, O. Zushi, T. Sasaki, K. Ichimura, H. Takezoe, A. Fukuda, K.A.W. Skarp
Mol. Cryst. Liq. Cryst., 225, 67-79 (1993).  

(11) Image Recording in Polymer Liquid Crystals
T. Ikeda, T. Sasaki, and S. Kurihara
Proc. Japan Acad., 69, 7-12, Ser. B, 7 (1993).  

(10) Time-Resolved Observation of Photochemical Phase Transition of Polymer Liquid Crystals
T. Sasaki, T. Ikeda, and K. Ichimura
Macromolecules, 25, 3807-3811 (1992).  

(9) Intrinsic Response of Polymer Liquid Crystals in Photochemical Phase Transition
T. Ikeda, T. Sasaki, and H.-B. Kim
J. Phys. Chem., 95, 509-511 (1991).  

(8) Photochemical Phase Transition of Polymer Liquid Crystals
T. Ikeda, T. Sasaki, and K. Ichimura
J. Photopolym. Sci Technol., 4, 191-198 (1991).  

(7) Time-Resolved Observation of Isothermal Phase Transition of Liquid Crystals Induced by Photoisomerization of Azobenzene Dopant
S. Kurihara, T. Ikeda, T. Sasaki, H.-B. Kim, and S. Tazuke
Mol. Cryst. Liq. Cryst., 195, 251-263 (1991).  

(6) Photosensitive Liquid Crystals Prepared from Poly(biphenyl vinyl ether-alt-maleic anhydride)s
T. Ikeda, S. Hasegawa, T. Sasaki, T. Miyamoto, M.-P. Lin, and S. Tazuke
Makromol. Chem., 192, 215-221 (1991).

(5) Photoreactivity and Emission Properties of Liquid Crystalline Twin Dimers Containing Cinnamic Acid Moieties at Both Ends of Ethylene Glycol Spacers. II. Emission Properties
T. Ikeda, Ta. Ikeda, T. Sasaki, B. Lee, S. Kurihara, and S. Tazuke
Liquid Crystals, 9, 469-477 (1991).  

(4) Photoreactivity and Emission Properties of Liquid Crystalline Twin Dimers Containing Cinnamic Acid Moieties at Both Ends of Ethylene Glycol Spacers. I. Synthesis, Thermotropic Properties and Photoreactivity
T. Ikeda, Ta. Ikeda, T. Sasaki, B. Lee, S. Kurihara, and S. Tazuke
Liquid Crystals, 9, 457-468 (1991).

(3) Excimer Formation in Main-Chain Polymer Liquid Crystals with Mesogenic p-Phenyleneacrylic Acids
T. Ikeda, C.H. Lee, T. Sasaki, B. Lee, S. Kurihara, and S. Tazuke
Macromolecules, 23, 1691-1695 (1990).  

(2) Photochemical Phase Transition Behaviors of Ternary Mixtures of Photochromic Azobenzene Derivative, Low Molecular Weight Liquid Crystal and Polymer Liquid Crystal
T. Ikeda, T. Miyamoto, T. Sasaki, B. Lee, and S. Tazuke
Mol. Cryst. Liq. Cryst., 188, 235-250 (1990).  

(1) Time-Resolved Observation of Isothermal Phase Transition of Liquid Crystals Triggered by Photochemical Reaction of Dopant
S. Kurihara, T. Ikeda, T. Sasaki, H.-B. Kim, and S. Tazuke
J. Chem. Soc. Chem. Commun., 1751-1752 (1990).  

II. Invited Lectures

(32) Preparation of high-performance photorefractive liquid crystal blends and their application to laser ultrasonics
Takeo Sasaki
SPIE Photonics West 2025 (San Francisco), January 29, 2025.

(31) Detection of phase change of light using photorefractive liquid crystals and their application to laser ultrasonics (Keynote)
Takeo Sasaki
SPIE Optics+Photonics 2024 (San Diego), August 18, 2024.

(30) Development of high-sensitivity photorefractive liquid crystals and their application to laser ultrasonics (Keynote)
Takeo Sasaki
International Liquid Crystal Conference (ILCC2024), (Rio de Janeiro), July 23, 2024.

(29) Preparation of fast-response photorefractive liquid crystals and their application to coaxial optical laser ultrasonics (Keynote)
Takeo Sasaki
SPIE Photonics Europe (Strasbourg) April 7, 2024.

(28) Laser ultrasonics for measurement of the thickness of metal plates using a photorefractive liquid crystal
Takeo Sasaki
SPIE Optics + Optoelectronics (Prague) April 23, 2023.

(27) Photorefractive Effect of Flexoelectric Liquid Crystal Mixtures and Their Application to Laser Ultrasonics
Takeo Sasaki
13th International Conference on Organic Nonlinear Optics (ICONO13) (Nara, Japan) November 8, 2022.

(26) Photorefractive effect of flexoelectric liquid crystal mixtures and their application to laser ultrasonic remote sensing
Takeo Sasaki
SPIE Optics + Photonics 2022 (San Diego) August 23, 2022.

(25) Photorefractive effect of smectic liquid crystalline mixtures and their application to remote-sensing devices
Takeo Sasaki
Frontiers in Optics & Photonics 2021 (Delhi) September 24, 2021.

(24) Large Photorefractive Effect Observed in Smectic Liquid Crystal Blends Containing Small Amount of Chiral Compound
Takeo Sasaki
PHOTONICS2018 The International Conference on Fiber Optics and Photonics (Delhi) December 12, 2018.

(23) Photorefractive Effect in Ferroelectric Liquid Crystal Blends Containing Oligo-thiophene Photoconductive Dopant (Keynote talk)
T. Sasaki
International Conference on Advances in Optics and Photonics
(XLI Conference of Optical Society of India)
ICAOP-2017 (Hisar, India) November 23-26, 2017.

(22) Photodetachable Adhesives Composed of Photodepolymerizable Poly(olefin sulfone)s (Keynote talk)
T. Sasaki
BIOSPECTRUM 2017 (Kolkata, India) August 25-26, 2017.

(21) Dynamic amplification of light signals in photorefractive ferroelectric liquid crystal blends containing photoconductive chiral dopant (Invited)
T. Sasaki
SPIE Optics & Photonics 2017, Light Manipulating Organic Materials and Devices IV (San Diego, USA) August 6-11, 2017.

(20) Light amplification by photorefractive ferroelectric liquid crystal blends
containing quarter-thiophene photoconductive chiral dopant (Ivited)
T. Sasaki
SPIE Photonics & Optoelectronics 2017 (Prague, Czech) April 24-27, 2017.

(19) Dynamic Light Amplification in Photorefractive Ferroelectric Liquid Crystal Blends Containing Photoconductive Chiral Dopant (Plenary talk)
T. Sasaki
The 7th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (IEEE UEMCON 2016, New York City, USA) October 20-22, 2016.

(18) Photorefractive Effect in Ferroelectric Liquid Crystal Blends Containing Quarter-thiophene Photoconductive Dopant (Plenary talk)
T. Sasaki
The 7th IEEE Annual Information Technology, Electronics and Mobile Communication Conference (IEEE IEMCON 2016, University of British Columbia, Vancouver, Canada) October 13 - 15, 2016

(17) Light Amplification in Photorefractive Ferroelectric Liquid Crystal Blends Containing Quaterthiophene Photoconductive Dopant (Invited)
T. Sasaki
3rd INTERNATIONAL CONFERENCE ON OPTO-ELECTRONICS AND APPLIED OPTICS,2016 (OPTRONIX-2016, University of Engineering and Management, Kolkata, India) August 18-20 (2016)

(16) Real time amplification of moving light signals by photorefractive ferroelectric liquid crystal mixtures
Takeo Sasaki and Yumiko Naka
IEM OPTRONIX-2015, (Kolkata, India), December 17-18, 2014 Keynote talk

(15) Dynamic Amplification of Light Signals in Photorefractive Ferroelectric Liquid Crystalline Mixtures
Takeo Sasaki, Satoshi Kajikawa and Yumiko Naka
Faraday Discussions 174 Organics, Photonics & Electronics, (Glasgow, UK), September 8-10, 2014

(14) Dynamic Amplification of Optical Signals in Photorefractive Ferroelectric Liquid Crystals
Takeo Sasaki and Yumiko Naka
7th Italian-Japanese Workshop on Liquid Crystals (Ravenna, Italy), July 6-9, 2014

(13) Real-time formation of dynamic hologram in photorefractive ferroelectric liquid crystals
T. Sasaki, M. Ikegami, S. Kajikawa and Y. Naka
SPIE Optics+Photonics (San Diego), August 25-29, 2013

(12) Real-time Dynamic Hologram Formation in Photorefractive Ferroelectric Liquid Crystals
T. Sasaki
International Conference on Emerging Advanced Nanomaterials (ICEAN 2012, Brisbane, Australia).
October 22-25, 2012

(11) Formation of Hologram in Photorefractive Ferroelectric Liquid Crystals
T. Sasaki,
International Conference of Photopolymer Sciecne and Technology (ICPST, Chiba University), June 26, 2012

(10) Photorefractive effect of ferroelectric liquid crystal mixtures
T. Sasaki and Y. Naka
THE 15TH INTERNATIONAL SYMPOSIUM ON ADVANCESD DISPLAY MATERIALS ＆ DEVICES (Kumamoto, Japan)
June 30, 2011

(9) Photorefractive Effect in Ferroelectric Liquid Crystal Mixtures
T. Sasaki
11th Chitose International Fourum on Photonics Science and Technology (CIF’11, Chitose, Japan)
October 14-15, 2010

(8)　Photorefractive Effect of Polymer Stabilized Ferroelectric Liquid Crystals
T. Sasaki
International Conference on Optics and Photonics（IOCP-2009） (Chandighar, India)
October30-November2, 2009

(7) Photorefractive Effect of Polymer Stabilized Ferroelectric Liquid Crystals
T. Sasaki
"Emerging Liquid Crystal Technologies IV Symposium," part of the Photonics West 2009 (SanJose)
January 24-29, 2009

(6) Photorefractive Effect of Ferroelectric Liquid Crystals with Application of Alternating Electric field
T. Sasaki
Photonics Asia 2007 (Beijing)
November 11-15, 2007

(5) Photorefractive Effect of Ferroelectric Liquid Crystals
T. Sasaki
"Emerging Liquid Crystal Technologies (OE21) Symposium," part of the Photonics West 2005 (San Jose)
January, 2005

(4) Effect of the Introduction of Supramolecular Structure on the Photorefractive
Properties of Liquid Crystalline Polymers
T. Sasaki
SPIE Annual Meeting 2004 (Denver)
August 2, 2004

(3) Spontaneous Polarization Reorientation Photorefractive Effect in FLCs
T. Sasaki
SPIE Annual Meeting 2002 (Seattle)
July 7, 2002

(2) Enhancement of Photorefractive Effect in the Isotropic Phase of Liquid Crystalline Polymers
T. Sasaki
ILCC2000 Satellite symposium (Tokyo)
July 29, 2000

(1) Enhancement of Photorefractivity in the Isotropic Phase of Polymer Liquid Crystals.
T. Sasaki
'98 Japan-Korea International Conference on Liquid Crystalline Materials and Devices (Tokyo)
October 30, 1998


III. International Conferences

(28) Real time amplification of moving light signals by photorefractive ferroelectric liquid crystal mixtures
Takeo Sasaki and Yumiko Naka
IEM OPTRONIX-2015, (Kolkata, India), December 17-18, 2014

(27) Dynamic Amplification of Light Signals in Photorefractive Ferroelectric Liquid Crystalline Mixtures
Takeo Sasaki, Satoshi Kajikawa and Yumiko Naka
Faraday Discussions 174 Organics, Photonics & Electronics, (Glasgow, UK), September 8-10, 2014

(26) Dynamic Amplification of Optical Signals in Photorefractive Ferroelectric Liquid Crystals
Takeo Sasaki and Yumiko Naka
7th Italian-Japanese Workshop on Liquid Crystals (Ravenna, Italy), July 6-9, 2014

(25) Dynamic Amplification of Light Signals in Photorefractive Ferroelectric Liquid Crystals
Takeo Sasaki, Yumiko Naka
SPIE Optics+Photonics (San Diego), August 17-21, 2014

(24) Dynamic Amplification of Light Signals in Photorefractive Ferroelectric Liquid Crystals
T. Sasaki, S. Kajikawa and Y. Naka
International Conference of Optics and Optoelectronics ICOL-2014, (Dehradun, India), March 5-8, 2014

(23) Real-time formation of dynamic hologram in photorefractive ferroelectric liquid crystals
T. Sasaki, M. Ikegami, S. Kajikawa and Y. Naka
SPIE Optics+Photonics (San Diego), August 25-29, 2013

(22) Real-time Dynamic Hologram Formation in Photorefractive Ferroelectric Liquid Crystals
T. Sasaki
International Conference on Emerging Advanced Nanomaterials (ICEAN 2012, Brisbane, Australia).
October 22-25, 2012

(21) Formation of Hologram in Photorefractive Ferroelectric Liquid Crystals
T. Sasaki,
International Conference of Photopolymer Sciecne and Technology (ICPST, Chiba University), June 26, 2012

(20) Photorefractive effect of ferroelectric liquid crystal mixtures
T. Sasaki and Y. Naka
THE 15TH INTERNATIONAL SYMPOSIUM ON ADVANCESD DISPLAY MATERIALS ＆ DEVICES (Kumamoto, Japan)
June 30, 2011

(19)Photorefractive Effect in Ferroelectric Liquid Crystal Mixtures
T. Sasaki, M. Ikegami and Y. Naka
1st International Conference on Advanced Photonic Polymers 2011
December 1-2, 2011 (Yokohama)

(18) Photorefractive Effect in Ferroelectric Liquid Crystal Mixtures
T. Sasaki
11th Chitose International Fourum on Photonics Science and Technology (CIF’11, Chitose, Japan)
October 14-15, 2010

(17)Photorefractive effect of ferroelectric liquid crystals
T. Sasaki
Pacifichem　Area 9 Materials and Nanotechnology #142*Fundamentals and Applications of Nanomaterials for Electronics and Photonics
December 16, 2010 (Honolulu, Hawaii)

(16)Photorefractive Effect of Ferroelectric Liquid Crystals
T. Sasaki
ICOL-2005 International Conference on Optics & Optoelectronics
(XXXI Symposium of Optical Society of India)
December 12-15, 2005 (Dehradun, Uttaranchal (INDIA))

(15) Spontaneous Polarization Reorientation Photorefractive Effect in
Low-Molecular-Weight FLC Mixtures
T. Sasaki
SPIE Annual Meeting 2003 (San Diego)
August 8, 2003

(14) Spontaneous Polarization Reorientation Photorefractive Effect in FLCs
T. Sasaki
SPIE Annual Meeting 2002 (Seattle)
July 7, 2002

(13) Spontaneous Polarization Vector Reorientation Photorefractive Effect in Ferroelectric Liquid Crystals
T. Sasaki
ILCC2002 (Edinburgh)
July 4, 2002

(12) Enhancement of Photorefractivity in the Isotropic Phase of Liquid Crystalline Polymers
T. Sasaki
ILCC2000 (Sendai)
July 26, 2000

(11) Photorefractive Effect of the Isotropic Phase of Polymer Liquid Crystals
T. Sasaki and Y. Ishikawa
SPIE 44th annual meeting (Denver)
July 18, 1999

(10) The Photorefractive Effect of Ferroelectric Liquid Crystals
T. Sasaki and Yuji Kino
The Nagoya COE Conference on Functionality and Characterization of Molecular Systems
January 7, 1999

(9) Enhancement of Photorefractivity in the Isotropic Phase of Polymer Liquid Crystals.
T. Sasaki
The Nagoya COE Conference on Functionality and Characterization of Molecular Systems
January 7, 1999

(8) Enhancement of Photorefractivity in the Isotropic Phase of Polymer Liquid Crystals.
T. Sasaki
'98 Japan-Korea International Conference on Liquid Crystalline Materials and Devices (Tokyo)
October 30, 1998

(7) Nonlinear Optical Effect in Ordered Molecular Systems (1) Photorefractive Effect of A Series of Molecular Assembly of Fluorocarbon Polyphiphiles
T. Sasaki, T. Yoshimi, Y. Mihata, and Y. Ishikawa
'97 Kyushu-Seibu/Pusan-Kyeongnam Joint Symposium on High Polymers and Fibers. (Kumamoto)
November 11, 1997

(6) Nonlinear Optical Effect in Ordered Molecular Systems (2) Photorefractive Effect of A Series of Polymer Liquid Crystals
T. Sasaki, R. Kai, T. Yoshimi, and Y. Ishikawa
'97 Kyushu-Seibu/Pusan-Kyeongnam Joint Symposium on High Polymers and Fibers. (Kumamoto)
November 11, 1997

(5) Nonlinear Optical Effect in Ordered Molecular Systems (3) Second Harmonic Generation in Polymer Liquid Crystals
T. Sasaki, T. Yoshimi, and Y. Ishikawa
'97 Kyushu-Seibu/Pusan-Kyeongnam Joint Symposium on High Polymers and Fibers. (Kumamoto)
November 11, 1997

(4) Phototunable Second Order Nonlinear Optical Effect in Nitroaniline Derivatives
T. Sasaki, Y. Takahashi, and M. Matsuda
Pacifichem '95 (Hawaii)
December 19, 1995

(3) Second Order Nonlinear Optical Properties of Side-chain Polymer Liquid Crystals with Sulfonated Azobenzene and Stilbene Chromophores
T. Sasaki, K. Makiguchi, and M. Matsuda
Pacifichem '95 (Hawaii)
December 19, 1995

(2) Photochemical Switching of Polarization in Ferroelectric Liquid Crystals: Effect of Structure of Host FLCs
T. Sasaki and T. Ikeda
Fourth International Conference on Ferroelectric Liquid Crystals (Tokyo)
September 29, 1993

(1) Time-Resolved Observation of Photochemical Phase Transition of Polymer Liquid Crystals
T. Sasaki, T. Ikeda, and K. Ichimura
Ibaragi (Tsukuba) International Symposium on Recent Trends in Organic Photochemistry and Its Extensive Prospect to Industry
May 11, 1991

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