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High-performance liquid crystals for next-generation in formation technologies

Research Project

Project/Area Number 13305063
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 高分子構造・物性(含繊維)
Research InstitutionTokyo Institute of Technology

Principal Investigator

IKEDA Tomiki  Tokyo Institute of Technology, Chemical Resources Laboratory, Professor, 資源化学研究所, 教授 (40143656)

Co-Investigator(Kenkyū-buntansha) SHISHIDO Atsushi  Tokyo Institute of Technology, Chemical Resources Laboratory, Associate Professor, 資源化学研究所, 助手 (40334536)
KANAZAWA Akihiko  Yamagata University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (80272714)
SHIONO Takeshi  Tokyo Institute of Technology, Chemical Resources Laboratory, Associate Professor, 資源化学研究所, 助教授 (10170846)
KINOSHITA Motoi  Tokyo Institute of Technology, Chemical Resources Laboratory, Associate Professor, 資源化学研究所, 助手 (40361761)
堤 治  東京工業大学, 資源化学研究所, 助手 (00313370)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥49,400,000 (Direct Cost: ¥38,000,000、Indirect Cost: ¥11,400,000)
Fiscal Year 2003: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2002: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2001: ¥21,320,000 (Direct Cost: ¥16,400,000、Indirect Cost: ¥4,920,000)
KeywordsHologram / Liquid crystal / Azobenzene / Holographic recording / Optical switching / Polymer / Refractive index / Grating / 3環フェニルアセチレン / フォトクロミズム / 複屈折 / ホログラフィー / 屈折率変調 / 光相転移
Research Abstract

Holography, which enables optical storage of three-dimension images, has been of great interest for photonic applications. To obtain clear images, Bragg hologram that theoretically achieves 1O0-% diffraction efficiency is required. In the Bragg hologram, materials should be optically sensitive, meaning that refractive index is efficiently changed by light. Liquid crystals, showing large optical anisotropy and fluidity, can be a good candidate for holographic materials since a large change in refractive index can be easily induced by external fields. There is another important characteristic in the hologram : reversibility of recording. Commercially available materials are sensitive enough, while images cannot be erased, which limits the application to photonic devices. Azobenzene is one of the outstanding photochromic molecules that are capable of changing absorption, molecular shape, and refractive index reversibly upon photoirradiation. Consequently, polymer liquid crystals incorpora … More ted with an azobenzene moiety are naturally expected to be reversible holographic materials.
In this study, two types of hologram, transmission-type and the Lippmann-type, were investigated using polymer azobenzene liquid crystal films. A linearly polarized beam from Ar^+ laser at 488 nm was split to two beams and interfered in the film with a crossing angle of 14゜ in transmission type and 180゜ in the Lippmann-type, respectively. Formation behavior of the transmission-type grating was probcd with a linearly polarized beam from He-Ne laser at 633 nm. The Lippmann-type grating was evaluated with transmission spectrum. In the transmission type, diffraction of the probe beam appeared upon irradiation of writing beams at 488 nm. Diffraction efficiency (η), that is defined as the ratio of diffraction intensity during irradiation to transmission intensity before irradiation, increased to 14% on photoirradiation. On the other hand, in the Lippman-type grating, the value of q for 500-nm light reached 43% when the film was irradiated at 350 mW/cm^2 for 60 min. Less

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] T.Ikeda: "Photomodulation of Liquid Crystal Orientations for Photonic Applications"J.Mater.Chem.. 13. 2037-2057 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Okano, A.Shishido, O.Tsutsumi T.Shiono, T.Ikeda: "Highly Efficient Holographic Materials Based on Polymer Liquid Crystals"J.Nonlinear Opt.Phys.Mater.. 12. 1-8 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Ikeda, S.Yoneyama, T.Yamamoto, M.Hasegawa: "Holographic Image Storage in Polymer Azobenzene Liquid Crystals"Mol.Cryst.Liq.Cryst.. 400. 149-159 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] H.Mochizuki, T.Hasui, M.Kawamoto, T.Ikeda, C.Adachi, Y.Taniguchi, Y.Shirota: "A Novel Class of Photo- and Electroactive Polymers Containing Oxadiazole and Amine Moieties in a Side Chain"Macromolecules. 36. 3457-3464 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Kawamoto, H.Mochizuki, T.Ikeda, B.Lee, Y.Shirota: "Polarized Emission from Self-Organized Low-Molecular-Weight Liquid Crystals with the Aid of Hole-Injecting Materials"J.Appl.Phys.. 94. 6442-6446 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 宍戸 厚, 池田 富樹(分担執筆): "ナノ・IT時代の分子機能材料と素子開発 高分子アゾベンゼン液晶のフォトニクス-ホログラムと光アクチュエータへの応用"エヌ・ティー・エス. (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Ikeda: "Photomodulation of Liquid Crystal Orientations for Photonic Applications"J. Mater. Chem.. 13. 2037-2057 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Okano, A.Shishido, O.Tsutsumi, T.Shiono, T.Ikeda: "Highly Efficient Holographic Materials Based on Polymer Liquid Crystals"J. Nonlinear Opt. Phys.. 12. 1-8 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Ikeda, S.Yoneyama, T.Yamamoto, M.Hasegawa: "Holographic Image Storage in Polymer Azobenzene Liquid Crystals"Mol. Cyst. Liq. Cyst.. 400. 149-159 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] H.Mochizuki, T.Hasui, M.Kawamoto, T.Ikeda, C.Adachi, Y.Taniguchi, Y.Shirota: "A Novel Class of Photo-and Electroactive Polymers Containing Oxadiazole and Amine Moieties in a Side Chain"Macromolecules. 36. 3457-3464 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Ikeda: "Photomodulation of Liquid Crystal Orientations for Photonic Applications"J.Mater.Chem.. 13. 2037-2057 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Okano, A.Shishido, O.Tsutsumi, T.Shiono, T.Ikeda: "Highly Efficient Holographic Materials Based on Polymer Liquid Crystals"J.Nonlinear Opt.Phys.Mater.. 12. 1-8 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Ikeda, S.Yoneyama, T.Yamamoto, M.Hasegawa: "Holographic Image Storage in Polymer Azobenzene Liquid Crystals"Mol.Cryst.Liq.Cryst.. 400. 149-159 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Mochizuki, T.Hasui, M.Kawamoto, T.Ikeda, C.Adachi, Y.Taniguchi, Y.Shirota: "A Novel Class of Photo- and Electroactive Polymers Containing Oxadiazole and Amine Moieties in a Side Chain"Macromolecules. 36. 3457-3464 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Kawamoto, H.Mochizuki, T.Ikeda, B.Lee, Y.Shirota: "Polarized Emission from Self-Organized Low-Molecular-Weight Liquid Crystals with the Aid of Hole-Injecting Materials"J.Appl.Phys.. 94. 6442-6446 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] O.Tsutsumi, T.Ikeda: "Photochemical Modulation of Alignment of Liquid Crystals and Photonic Applications"Cur.Opin.Solid State & Mater. 6. 563-568 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 宍戸 厚, 池田 富樹(分担執筆): "ナノ・IT時代の分子機能材料と素子開発 高分子アゾベンゼン液晶のフォトニクス-ホログラムと光アクチュェータへの応用"エヌ・ティー・エス. (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Nakano, Y.Yu, A.Shishido, O.Tsutsumi, A.Kanazawa, T.Shiono, T.Ikeda: "Photoresponsive Behavior of Azobenzene Liquid-Crystalline Gels"Mol. Cryst. Liq. Cryst.. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Ikeda, M.Nakano, Y.Yu, O.Tsutsumi, A.Kanazawa: "Anisotropic Bending and Unbending Behavior of Azobenzene Liquid-Crystalline Gels by Light"Adv. Mater.. 15. 201-205 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Yoneyama, T.Yamamoto, O.Tsutsumi, A.Kanazawa, T.Shiono, T.Ikeda: "High-Performance Material for Holographic Gratings by Means of a Photoresponsive Polymer Liquid Crystal Containing a Tolane Moiety with High Birefringence"Macromolecules. 35. 8751-8758 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Ikeda, S.Yoneyama, T.Yamamoto, M.Hasegawa: "Refractive-Index Modulation by Means of Photosensitive Liquid Crystals"Mol. Cryst. Liq. Cryst.. 375. 45-60 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.Mamiya, K.Kanie, T.Hiyama, T.Ikeda, T.Kato: "A Rodlike Organogelalor : Fibrous Aggregation of Azobenzene Derivatives with a syn-Chiral Carbonate Moiety"Chem. Commun.. 1870-1871 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] J.-H.Sung, S.Hiano, O.Tsutsumi, A.Kanazawa, T.Shiono, T.Ikeda: "Dynamics of Photochemical Phase Transition of Guest/Host Liquid Crystals with an Azobenzene Derivative as a Photosensitive Chromophore"Chem. Mater.. 14. 385-391 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Ikeda, S.Yoneyama, T.Yamamoto, M.Hasegawa: "Holographic Grating by Means of Polymer Liquid Crystals"J. Inform. Disp.. 2. 6-12 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] C.-D. Keum, A.Kanazawa, T.Ikeda: "Novel Cross-Linked Organic Materials with Pronounced Spontaneous Polarization Based on Bis-Dipolar Molecules"Adv. Mater.. 13. 321-323 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Yamamoto, T.Ikeda, et al.: "Phase-Type Gratings Formed by Photochemical Phase Transition of Polymer Azobenzene Liquid Crystals : 2. Rapid Switching of Diffraction Beams in Thin Films"J. Phys. Chem. B. 105. 2308-2331 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Yoneyama, T.Ikeda, et al.: "Formation of Intensity Grating in a Polymer Liquid Crystals with a Side-Chain Azobenzene Moiety by Photoinduced Alignment Change of Mesogens"J. Mater. Chem.. 11. 3008-3013 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] H.Mochizuki, T.Ikeda, et al.: "Electroluminescent Behavior of Oxadiazole Derivatives in Liquid-crystalline Media"Mol. Cryst. Liq. Cryst.. 365. 129-138 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Ikeda: "Photochemical Modulation of Refractive Index by Means of Photosensitive Liquid Crystals"Mol. Cryst. Liq. Cryst.. 364. 187-197 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Ikeda, A.Kanazawa: "Molecular Switches, Chapter 12"B. L. Feringa, ed., Wiley-VCH. 35 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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