1998 Fiscal Year Annual Research Report

ナノメトリック有機分子膜の線形および非線型誘電分極率評価装置の開発

Research Project

Project/Area Number	09555095
Research Institution	Tokyo Institute of Technology
Principal Investigator	岩本光正東京工業大学, 工学部, 教授 (40143664)
Co-Investigator(Kenkyū-buntansha)	米田勝実日本レーザ電子株式会社, 代表取締役真島豊東京工業大学, 工学部, 助教授 (40293071)
Keywords	有機分子膜 / 変位電流法 / 理論解析 / 誘電率 / 双極子 / 電気物性 / 相転移 / 非線型光学
Research Abstract	本研究は、申請者が誘電体電気物性を基礎として提案してきた水面上単分子膜の電気物性評価法である変位電流法を、実用レベルまで展開するために3年間の計画で立案されたものである。すなわち、誘電体電子物性の立場から、双極性分子の物質界面での線形誘電性、さらには非線形誘電性を同時に評価するシステムを構築し、物質界面におけるナノメトリック分子膜の電気的および光学的性質を、誘電体物性の立場から解き明かすことを目的としている。本年度に得られた成果を要約すると次のようになる。 (1) 物質界面の双極子性分子の一次配向度と線形誘電率に関連しては、変位電流法を用いて、分子膜の一次の配向度<cosθ>,秩序度)の大きさ、外部刺激(光、圧力、熱)に対する配向度の変化を評価する事ができた。また、基板効果を考慮した誘電異方性を持つ分子および持たない分子により形成される分子膜の形態変化に伴う誘電的構造の理論解析することができた。また、非線形誘電率を評価できる見通しが得られた。 (2) 昨年度試作した光学的に分子膜の2次の配向度(<cos2θ>)と非線形誘電率の評価を同時に計測できるシステムを用いて、シアノビフエニル液晶性分子膜について初歩的な測定結果が得られた。

Research Products
(17 results)

All Other

All Publications (17 results)

[Publications] Y.Sato,C.X.Wu,Y.Majima and M.Iwamoto: "Determination of the piezoelectric coefficient of monolayers on water surface by Maxwel displacement current measurement" Jpn.J.Appl.Phys.37. 215-216 (1998)
[Publications] C.X.Wu and M.Iwamoto: "Polar orientaional phase transition in smectic monolayers induced by monolayer compression" Phys.Rev.E.57. 5740-5743 (1998)
[Publications] Y.Majima,S.Miyamoto,Y.Oyama,and M.Iwamoto: "Tunneling current and surface potential simultaneous measurement using a scanning probe" Jpn.J.Appl.Phys.37. 4557-4560 (1998)
[Publications] C.X.Wu,Y.Majima and M.Iwamoto: "Analysis of Dielectric Relaxation Phenomena of Monolayer Films by Monolayer Compression" Thin Solid Films. 327-329. 327-329 (1998)
[Publications] Y.Sato,C.X.Wu,Y.Majima and M.Iwamoto: "Determination of Dielectric Relaxation Time of Langmuir-films by a Whole-curve Method Using Maxwell Displacement Current" Jpn.J.Appl.Phys. 37. 5655-5658 (1998)
[Publications] M.Iwamoto,C.X.Wu,Y.Mizutani: "Analysis of thermally stimulated Maxwell-displacement current across organic monolayers" J.Appl.Phys.83. 4891-4896 (1998)
[Publications] Y.Majima,Y.Sato,C.X.Wu and M.Iwamoto: "Investigation of Dielectric Relaxation Phenomena in Liquid Crystal Monolayer at the Air-Water Interface" Thin Solid Films. 327-329. 232-235 (1998)
[Publications] C.X.Wu,Y.Majima and M.Iwamoto: "Calculation of the dielectric constant of monolayers with dielectric anisotropy with a consideration of molecular configuration" Thin Solid Films. 327-329. 395-398 (1998)
[Publications] M.Iwamoto,C.X.Wu,and Z.C.Ou-Yang: "Separation of chiral phases by compression : Kinetic localization of the enantiomers in a monolayer of racemic amphiphilies viewed as mixing choiesteric liquid crystals" Chem.Phys.Lett.285. 306-312 (1998)
[Publications] K.H.Park and M.Iwamoto: "Maxwell displacement current across Langmuir phospholipid and azobenzene mixed monolayers by photoisomerization" Mol.Cryst.Liq.Cryst.316. 145-148 (1998)
[Publications] C.X.Wu,Z.C.Ou-Yang and M.Iwamoto: "Polar orientational phase transition and differential dielectric constant of smectic monolayer films" J.Chem.Phys.109. 4552-4561 (1998)
[Publications] X.B.Xu,Y.Majima,and M.Iwamoto: "Molecular switching in phospholipid-azobenzene mixed monolayers by photoisomerization" Thin Solid Films. 331. 239-247 (1998)
[Publications] X.B.Xu,Y.Majima,and M.Iwamoto: "Molecular switching in phospholipid and azobenzene mixed monolayers using Maxwell-displacement-current-measuring technique" Jpn.J.Appl.Phys.36. 7348-7353 (1997)
[Publications] 福澤雅弘、吉武隆一、岩本光正: "水面上アゾベンゼン混合単分子膜の光変位電流" 電気学会論文誌. 118-A. 1332-1340 (1998)
[Publications] M.Iwamoto,C.X.Wu,and Z.C.Ou-Yang: "Pattern formation and chiral phase separation by compression : racemic monolayer viewd as Bragg williams binary cholesterics" Phys.Rev.E. 59. 586-590 (1998)
[Publications] 岩本光正: "「有機超薄膜の界面現象と機能」特集号にあたって" 電気学会雑誌. 118-A. 1331 (1998)
[Publications] C.X.Wu,Y.Sato,Y.Majima,M.Iwamoto: "Determination of Dielectric Relaxation Time of Langmuir-films using Maxwell Displacement Current Measurement" 1998 International Symposium on Elecrical Insulating Materials. P2-52. 803-806 (1998)

1998 Fiscal Year Annual Research Report

ナノメトリック有機分子膜の線形および非線型誘電分極率評価装置の開発

Principal Investigator

岩本 光正 東京工業大学, 工学部, 教授 (40143664)

Research Products

[Publications] Y.Sato,C.X.Wu,Y.Majima and M.Iwamoto: "Determination of the piezoelectric coefficient of monolayers on water surface by Maxwel displacement current measurement" Jpn.J.Appl.Phys.37. 215-216 (1998)

[Publications] C.X.Wu and M.Iwamoto: "Polar orientaional phase transition in smectic monolayers induced by monolayer compression" Phys.Rev.E.57. 5740-5743 (1998)

[Publications] Y.Majima,S.Miyamoto,Y.Oyama,and M.Iwamoto: "Tunneling current and surface potential simultaneous measurement using a scanning probe" Jpn.J.Appl.Phys.37. 4557-4560 (1998)

[Publications] C.X.Wu,Y.Majima and M.Iwamoto: "Analysis of Dielectric Relaxation Phenomena of Monolayer Films by Monolayer Compression" Thin Solid Films. 327-329. 327-329 (1998)

[Publications] Y.Sato,C.X.Wu,Y.Majima and M.Iwamoto: "Determination of Dielectric Relaxation Time of Langmuir-films by a Whole-curve Method Using Maxwell Displacement Current" Jpn.J.Appl.Phys. 37. 5655-5658 (1998)

[Publications] M.Iwamoto,C.X.Wu,Y.Mizutani: "Analysis of thermally stimulated Maxwell-displacement current across organic monolayers" J.Appl.Phys.83. 4891-4896 (1998)

[Publications] Y.Majima,Y.Sato,C.X.Wu and M.Iwamoto: "Investigation of Dielectric Relaxation Phenomena in Liquid Crystal Monolayer at the Air-Water Interface" Thin Solid Films. 327-329. 232-235 (1998)

[Publications] C.X.Wu,Y.Majima and M.Iwamoto: "Calculation of the dielectric constant of monolayers with dielectric anisotropy with a consideration of molecular configuration" Thin Solid Films. 327-329. 395-398 (1998)

[Publications] M.Iwamoto,C.X.Wu,and Z.C.Ou-Yang: "Separation of chiral phases by compression : Kinetic localization of the enantiomers in a monolayer of racemic amphiphilies viewed as mixing choiesteric liquid crystals" Chem.Phys.Lett.285. 306-312 (1998)

[Publications] K.H.Park and M.Iwamoto: "Maxwell displacement current across Langmuir phospholipid and azobenzene mixed monolayers by photoisomerization" Mol.Cryst.Liq.Cryst.316. 145-148 (1998)

[Publications] C.X.Wu,Z.C.Ou-Yang and M.Iwamoto: "Polar orientational phase transition and differential dielectric constant of smectic monolayer films" J.Chem.Phys.109. 4552-4561 (1998)

[Publications] X.B.Xu,Y.Majima,and M.Iwamoto: "Molecular switching in phospholipid-azobenzene mixed monolayers by photoisomerization" Thin Solid Films. 331. 239-247 (1998)

[Publications] X.B.Xu,Y.Majima,and M.Iwamoto: "Molecular switching in phospholipid and azobenzene mixed monolayers using Maxwell-displacement-current-measuring technique" Jpn.J.Appl.Phys.36. 7348-7353 (1997)

[Publications] 福澤雅弘、吉武隆一、岩本光正: "水面上アゾベンゼン混合単分子膜の光変位電流" 電気学会論文誌. 118-A. 1332-1340 (1998)

[Publications] M.Iwamoto,C.X.Wu,and Z.C.Ou-Yang: "Pattern formation and chiral phase separation by compression : racemic monolayer viewd as Bragg williams binary cholesterics" Phys.Rev.E. 59. 586-590 (1998)

[Publications] 岩本光正: "「有機超薄膜の界面現象と機能」特集号にあたって" 電気学会雑誌. 118-A. 1331 (1998)

[Publications] C.X.Wu,Y.Sato,Y.Majima,M.Iwamoto: "Determination of Dielectric Relaxation Time of Langmuir-films using Maxwell Displacement Current Measurement" 1998 International Symposium on Elecrical Insulating Materials. P2-52. 803-806 (1998)

岩本光正東京工業大学, 工学部, 教授 (40143664)