TITLE

Nonlinear electrophoretic motion of dielectric microparticles in nematic liquid crystals

AUTHOR(S)
Ryzhkova, A. V.; Podgornov, F. V.; Haase, W.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/12/2010, Vol. 96 Issue 15, p151901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The motion of dielectric microparticles induced by external ac electric field, E, was investigated in the cell with in-plane stripe electrodes and filled with homeotropically aligned nematic liquid crystal. It was demonstrated that the average velocity of the microparticles depended on the third power of the electric field strength (v=μ(3)E3). The experimental results were explained by the induced charge electrophoresis.
ACCESSION #
49193349

 

Related Articles

  • Measurements of the electrokinetic forces on dielectric microparticles in nematic liquid crystals using optical trapping. Ryzhkova, A. V.; Podgornov, F. V.; Gaebler, A.; Jakoby, R.; Haase, W. // Journal of Applied Physics;Jun2013, Vol. 113 Issue 24, p244902 

    We have studied the dynamics of dielectric microparticles dispersed in a nematic liquid crystal (NLC) in the presence of an external AC electric field. Investigations were performed using optical trapping technique in the cell with in-plane electrodes. It was shown that the main driving force in...

  • Nonlinear electrophoresis of dielectric and metal spheres in a nematic liquid crystal. Lavrentovich, Oleg D.; Lazo, Israel; Pishnyak, Oleg P. // Nature;10/21/2010, Vol. 467 Issue 7318, p947 

    Electrophoresis is a motion of charged dispersed particles relative to a fluid in a uniform electric field. The effect is widely used to separate macromolecules, to assemble colloidal structures and to transport particles in nano- and microfluidic devices and displays. Typically, the fluid is...

  • Fast response wide viewing angle liquid crystal cell with double-side fringe-field switching. Xiang, C.Y.; Sun, X.W.; Yin, X.J. // Applied Physics Letters;12/22/2003, Vol. 83 Issue 25, p5154 

    A four-electrode liquid crystal cell, featuring a double-side fringe-field switching, has been designed with two-layer electrodes on both glass substrates. The two-layer electrode is the same as that used in fringe-field switching liquid crystal displays. Using a negative dielectric liquid...

  • Stabilization of the liquid crystal director in the patterned vertical alignment mode through formation of pretilt angle by reactive mesogen. Kim, Sang Gyun; Kim, Sung Min; Kim, Youn Sik; Lee, Hee Kyu; Lee, Seung Hee; Lee, Gi-Dong; Lyu, Jae-Jin; Kim, Kyeong Hyeon // Applied Physics Letters;6/25/2007, Vol. 90 Issue 26, p261910 

    In the patterned vertical alignment (PVA) cell in which multidomains are formed from the perfect vertical alignment through an oblique field only, the formation of disclinations between liquid crystal (LC) molecules is inevitable in the presence of an electric field, which lowers transmittance...

  • Switchable liquid crystal grating with sub millisecond response. Fan, F.; Srivastava, A. K.; Chigrinov, V. G.; Kwok, H. S. // Applied Physics Letters;3/12/2012, Vol. 100 Issue 11, p111105 

    In present article, we disclose a fast switchable grating based on nematic liquid crystals. A fine striped electrode has been exploited to generate the grating profile and a driving scheme to drive the grating cell has also been proposed, which enable us to drive the cell up to very high...

  • Photonic crystal reflectance switching by dye electrophoresis. Krabbe, Joshua D.; Brett, Michael J. // Applied Physics Letters;7/26/2010, Vol. 97 Issue 4, p041117 

    Reflectivity of a photonic crystal device fabricated by glancing angle deposition may be reversibly altered by infiltration with an absorbing dye solution. An electric field controls the dye ion motion through the photonic crystal. Rapid reflectance changes up to 0.4 in the crystal’s...

  • Laser induced gratings enhanced by surface-charge mediated electric field in doped nematic liquid crystals. Xiang, Ying; Liu, Yi-Kun; Li, Tao; Yang, Shun-Lin; Jiang, Zhi-Jie // Journal of Applied Physics;Sep2008, Vol. 104 Issue 6, p063107 

    The optically induced grating enhanced by dc electric field in nematic liquid crystal (LC) doped with copper porphyrin is studied. The reorientational effect of the LC was not observed for the writing beams with the intensity up to 500 mW/mm2, but the threshold of the reorientation was reduced...

  • Low-Frequency Dielectric Relaxation in 5TsB Liquid Crystals Controlled by the Ion Adsorption–Desorption Processes. Koval’chuk, A. V. // Technical Physics Letters;Oct2000, Vol. 26 Issue 10, p849 

    Stable liquid-crystalline states with various ε' and p values were obtained in planar-oriented 5TsB liquid crystals by exposure to constant and alternating electric fields. The initial portion of the low-frequency dispersion of ε' and ε' obeys the Debye equation for both strictly planar...

  • Polarity-dependent dielectric torque in nematic liquid crystals. Mingxia Gu; Shiyanovskii, Sergij V.; Lavrentovich, Oleg D. // Electronic-Liquid Crystal Communications (e-LC);Mar2008, p1 

    The dielectric dispersion in the uniaxial nematic liquid crystals affects the switching dynamics of the director, as the dielectric torque is determined by not only the present values of the electric field and director but also by their past values. We demonstrate that this "dielectric memory"...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics