RSI Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Review of Scientific Instruments / Volume 77 / Issue 5 / CHEMISTRY

Rev. Sci. Instrum. 77, 054101 (2006); http://dx.doi.org/10.1063/1.2200764 (4 pages)

Wideband measurement of shear induced birefringence by quadrupole method

M. Hosoda1, K. Horii2, H. Nomura3, and K. Sakai2

1Frontier Research and Development Center, Tokyo Denki University, Ishizaka, Hatoyama, Saitama 350-0394, Japan
2Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
3Tokyo Denki University, Ishizaka, Hatoyama, Saitama 350-0394, Japan

View MapView Map

(Received 27 September 2005; accepted 3 April 2006; published online 22 May 2006)

We developed a new method for the measurement of the dynamic birefringence induced by the alternating shear deformation in fluid samples. A quadrupole piezoactuator generates the pure shear deformation in the frequency range from 1 Hz to 5 kHz and causes the molecular orientation, or the anisotropic conformation of polymers and molecular associations, which is observed by the optical ellipsometry technique. The spectrum of the shear-induced birefringence observed for the isotropic phase of the liquid crystal p‐n-hexyl p′-cyanobiphenyl (6CB) shows linear dependence on the frequency up to 5 kHz, corroborating the effective band of the experimental system. The sensitivity of the system was demonstrated by the quantitative measurement of the birefringence for the isotropic phase of p‐n-pentyl p′-cyanobiphenyl (5CB). The system was also applied to the aqueous solution of the worm such as micelles and the result shows the relaxation of shear induced birefringence at around 10 Hz, which agrees well with the previous reports.

© 2006 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. PRINCIPLE OF THE QUADRUPOLE FLOW BIREFRINGENCE
  3. EXPERIMENTAL SETUP
  4. OBSERVATION OF RELAXATION IN COUPLING PROCESS BETWEEN SHEAR AND ORIENTATIONAL ORDER

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

polymers, flow birefringence, liquid crystals, shear deformation, molecular orientation, colloids, piezoelectric actuators, relaxation

PACS

  • 62.10.+s

    Mechanical properties of liquids

  • 61.30.Gd

    Orientational order of liquid crystals; electric and magnetic field effects on order

  • 61.30.Eb

    Experimental determinations of smectic, nematic, cholesteric, and other structures

  • 61.30.Vx

    Polymer liquid crystals

  • 78.20.Fm

    Birefringence

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2200764

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    B. J. Berne and R. Pecora, Dynamic Light Scattering (Dover, New York, 2000).

    T. Matsuoka, K. Sakai, and K. Takagi, Phys. Rev. Lett. 71, 1510 (1993).

    G. B. Thurston, J. Chem. Phys. 47, 3582 (1967)JCPSA6000047000009003582000001.

    G. B. Thurston and J. L. Schrag, J. Chem. Phys. 45, 3373 (1966)JCPSA6000045000009003373000001.


For access to citing articles, you need to log in.


Figures (5)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Wideband measurement of shear induced birefringence by quadrupole method
  2. Dual-frequency ferromagnetic resonance
  3. Cryogenic low energy electron point source microscope
  4. Photoacoustic imaging in biomedicine
  5. Design of a high-efficiency grazing incidence monochromator with multilayer-coated laminar gratings for the 1–6 keV region
Go to AIP Home
Copyright © American Institute of Physics
close