Atomic force microscope based method of measuring short cholesteric pitch in liquid crystals

被引：23
|
作者：
Skarabot, Miha [1 ,2 ]
Lokar, Ziga [1 ]
Gabrijelcic, Katja [1 ]
Wilkes, David [3 ]
Musevic, Igor [1 ,2 ]
机构：
[1] Jozef Stefan Inst, Ljubljana, Slovenia
[2] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia
[3] Merck KGaA, Darmstadt, Germany
来源：
LIQUID CRYSTALS | 2011年 / 38卷 / 08期
关键词：
cholesteric liquid crystal; pitch measurement; atomic force microscope;
D O I：
10.1080/02678292.2011.589912
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We present a new, high-resolution method for measuring the helical pitch in cholesteric liquid crystals (CLCs) using an atomic force microscope. This method is based on the measurement of force between a microsphere and a flat surface in the presence of CLCs. The measured force is periodic due to the structural periodicity of the CLC and the pitch can be determined with the accuracy of several nanometres. Besides high accuracy there is no limitation for measuring very short pitches below 200 nm, which is not possible with the standard optical Grandjean-Cano wedge method.
引用
收藏
页码：1017 / 1020
页数：4
相关论文
共 50 条
  • [1] Flexible Structures Based on a Short Pitch Cholesteric Liquid Crystals
    Palermo, Giovanna
    De Sio, Luciano
    Umeton, Cesare
    [J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2015, 619 (01) : 35 - 41
  • [2] Optical properties of short pitch cholesteric liquid crystals
    Ponti, S
    Becchi, M
    Oldano, C
    Taverna, P
    Trossi, L
    [J]. LIQUID CRYSTALS, 2001, 28 (04) : 591 - 598
  • [3] AN OPTICAL METHOD FOR THE DETERMINATION OF THE CHOLESTERIC PITCH IN LIQUID-CRYSTALS
    DIERKING, I
    GIESSELMANN, F
    ZUGENMAIER, P
    [J]. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 1995, 50 (06): : 589 - 594
  • [4] Computational method to determine the pitch length in cholesteric liquid crystals
    Arcolezi, G. M.
    Luders, D. D.
    Sampaio, A. R.
    Simoes, M.
    Braga, W. S.
    Santos, O. R.
    Palangana, A. J.
    Kimura, N. M.
    [J]. JOURNAL OF MOLECULAR LIQUIDS, 2020, 298
  • [5] MEASURING EFFECTIVE MODULUS WITH BIFURCATION BASED ATOMIC FORCE MICROSCOPE METHOD
    Huang, Wei
    Dick, Andrew J.
    [J]. PROCEEDINGS OF THE ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, VOL 7, 2012, : 481 - 490
  • [6] Novel method for measuring nanofriction by atomic force microscope
    Salvadori, M. C.
    Lisboa, F. S.
    Fernandes, F. M.
    Brown, I. G.
    [J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2008, 26 (02): : 643 - 650
  • [7] Optic models for short-pitch cholesteric and chiral smectic liquid crystals
    Hubert, P
    Jagemalm, P
    Oldano, C
    Rajteri, M
    [J]. PHYSICAL REVIEW E, 1998, 58 (03): : 3264 - 3272
  • [8] Cholesteric pitch of lyotropic polymer liquid crystals
    Sato, T
    Nakamura, J
    Teramoto, A
    Green, MM
    [J]. MACROMOLECULES, 1998, 31 (04) : 1398 - 1405
  • [9] DEPENDENCE OF PITCH ON COMPOSITION IN CHOLESTERIC LIQUID CRYSTALS
    ADAMS, J
    HAAS, W
    WYSOCKI, J
    [J]. PHYSICAL REVIEW LETTERS, 1969, 22 (03) : 92 - &
  • [10] Optical control of the pitch in cholesteric liquid crystals
    Shirota, K
    Tachibana, K
    Yamaguchi, I
    [J]. OPTICAL ENGINEERING FOR SENSING AND NANOTECHNOLOGY (ICOSN'99), 1999, 3740 : 372 - 375
12345