Photodriven, Flexural-Torsional Oscillation of Glassy Azobenzene Liquid Crystal Polymer Networks

被引：231

作者：

Lee, Kyung Min ^{[1
,2
]}

Smith, Matthew L. ^{[1
,3
]}

Koerner, Hilmar ^{[1
,4
]}

Tabiryan, Nelson ^{[5
]}

Vaia, Richard A. ^{[1
]}

Bunning, Timothy J. ^{[1
]}

White, Timothy J. ^{[1
]}

机构：

[1] USAF, Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

[2] Azimuth Corp, Dayton, OH 45433 USA

[3] CNR, Dayton, OH 45433 USA

[4] UES Inc, Dayton, OH 45433 USA

[5] BEAM Engn Adv Measurements Co, Winter Pk, FL 32789 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2011年 / 21卷 / 15期

关键词：

ACTUATORS; LIGHT; ELASTOMERS; FILM;

D O I：

10.1002/adfm.201100333

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cantilevers composed of glassy, photoresponsive liquid crystalline polymer networks (LCNs) are shown to oscillate at high frequency (similar to 50 Hz) and large amplitude when exposed to light from a 442 nm coherent wave (CW) laser. Added dimensionality to previously reported in-plane oscillations is enabled by adjusting the orientation of the nematic director to the long axis of the cantilever yielding in-plane bending accompanied by out-of-plane twisting (flexural-torsional oscillation). The fundamental photoresponse of this class of glassy azobenzene liquid crystal polymer networks (azo-LCN) is further probed by examining the influence of cantilever aspect ratio, laser intensity, and temperature. The frequency of photodirected oscillations is strongly correlated to the length of the cantilever while the amplitude and threshold laser intensity for oscillation is strongly correlated to temperature.

引用

页码：2913 / 2918

页数：6

共 28 条

[1] Current and future developments in artificial muscles using electroactive polymers [J].

Bar-Cohen, Yoseph .

EXPERT REVIEW OF MEDICAL DEVICES, 2005, 2 (06) :731-740

[2] Fast liquid-crystal elastomer swims into the dark [J].

Camacho-Lopez, M ;

Finkelmann, H ;

Palffy-Muhoray, P ;

Shelley, M .

NATURE MATERIALS, 2004, 3 (05) :307-310

[3] Linear and Nonlinear photoinduced deformations of cantilevers [J].

Corbett, D. ;

Warner, M. .

PHYSICAL REVIEW LETTERS, 2007, 99 (17)

[4] Nonlinear dynamics of optical absorption of intense beams [J].

Corbett, D. ;

van Oosten, C. L. ;

Warner, M. .

PHYSICAL REVIEW A, 2008, 78 (01)

[5] A new opto-mechanical effect in solids [J].

Finkelmann, H ;

Nishikawa, E ;

Pereira, GG ;

Warner, M .

PHYSICAL REVIEW LETTERS, 2001, 87 (01)

[6] Large amplitude light-induced motion in high elastic modulus polymer actuators [J].

Harris, KD ;

Cuypers, R ;

Scheibe, P ;

van Oosten, CL ;

Bastiaansen, CWM ;

Lub, J ;

Broer, DJ .

JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (47) :5043-5048

[7] Multifunctional liquid crystal elastomers: Large electromechanical and electro-optical effects [J].

Hashimoto, Shigehiro ;

Yusuf, Yusril ;

Krause, Simon ;

Finkelmann, Heino ;

Cladis, P. E. ;

Brand, Helmut R. ;

Kai, Shoichi .

APPLIED PHYSICS LETTERS, 2008, 92 (18)

[8] Wingbeat Time and the Scaling of Passive Rotational Damping in Flapping Flight [J].

Hedrick, Tyson L. ;

Cheng, Bo ;

Deng, Xinyan .

SCIENCE, 2009, 324 (5924) :252-255

[9] uv manipulation of order and macroscopic shape in nematic elastomers [J].

Hogan, PM ;

Tajbakhsh, AR ;

Terentjev, EM .

PHYSICAL REVIEW E, 2002, 65 (04) :10

[10] Magnetoactive liquid crystal elastomer nanocomposites [J].

Kaiser, Andreas ;

Winkler, Moritz ;

Krause, Simon ;

Finkelmann, Heino ;

Schmidt, Annette M. .

JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (04) :538-543

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