Iris-Like Tunable Aperture Employing Liquid-Crystal Elastomers

被引：221

作者：

Schuhladen, Stefan ^{[1
]}

Preller, Falko ^{[1
]}

Rix, Richard ^{[2
]}

Petsch, Sebastian ^{[1
]}

Zentel, Rudolf ^{[2
]}

Zappe, Hans ^{[1
]}

机构：

[1] Univ Freiburg, Dept Microsyst Engn, Gisela & Erwin Sick Chair Microopt, D-79110 Freiburg, Germany

[2] Johannes Gutenberg Univ Mainz, Inst Organ Chem, D-55099 Mainz, Germany

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 42期

关键词：

liquid-crystal elastomers; magnetic orientation; tunable apertures; radial actuation; irises; POLYMER NETWORKS; ACTUATORS;

D O I：

10.1002/adma.201402878

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A liquid-crystal elastomer (LCE) iris inspired by the human eye is demonstrated. With integrated polyimide-based platinum heaters, the LCE material is thermally actuated. The radial contraction direction, similar to a mammalian iris, is imprinted to the LCE by a custom-designed magnetic field. Actuation of the device is reproducible over multiple cycles and controllable at intermediate contraction states. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：7247 / 7251

页数：5

共 22 条

[1] Self-assembled shape-memory fibers of triblock liquid-crystal polymers [J].

Ahir, SV ;

Tajbakhsh, AR ;

Terentjev, EM .

ADVANCED FUNCTIONAL MATERIALS, 2006, 16 (04) :556-560

[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] Batch fabrication of optical actuators using nanotube-elastomer composites towards refreshable Braille displays [J].

Camargo, C. J. ;

Campanella, H. ;

Marshall, J. E. ;

Torras, N. ;

Zinoviev, K. ;

Terentjev, E. M. ;

Esteve, J. .

JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2012, 22 (07)

[4] Variable aperture controlled by microelectrofluidic iris [J].

Chang, Jong-Hyeon ;

Jung, Kyu-Dong ;

Lee, Eunsung ;

Choi, Minseog ;

Lee, Seungwan ;

Kim, Woonbae .

OPTICS LETTERS, 2013, 38 (15) :2919-2922

[5] Engineering of Complex Order and the Macroscopic Deformation of Liquid Crystal Polymer Networks [J].

de Haan, Laurens T. ;

Sanchez-Somolinos, Carlos ;

Bastiaansen, Cees M. W. ;

Schenning, Albertus P. H. J. ;

Broer, Dirk J. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (50) :12469-12472

[6] Micro-structured electrochromic device based on poly(3,4-ethylenedioxythiophene) [J].

Deutschmann, T. ;

Oesterschulze, E. .

JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2013, 23 (06)

[7] Variable aperture stop based on the design of a single chamber silicone membrane lens with integrated actuation [J].

Draheim, Jan ;

Burger, Tobias ;

Korvink, Jan G. ;

Wallrabe, Ulrike .

OPTICS LETTERS, 2011, 36 (11) :2032-2034

[8]

FINKELMANN H, 1981, MAKROMOL CHEM-RAPID, V2, P317

[9] One-piece micropumps from liquid crystalline core-shell particles [J].

Fleischmann, Eva-Kristina ;

Liang, Hsin-Ling ;

Kapernaum, Nadia ;

Giesselmann, Frank ;

Lagerwall, Jan ;

Zentel, Rudolf .

NATURE COMMUNICATIONS, 2012, 3

[10] Preparation of Soft Microactuators in a Continuous Flow Synthesis Using a Liquid-Crystalline Polymer Crosslinker [J].

Fleischmann, Eva-Kristina ;

Ohm, Christian ;

Serra, Christophe ;

Zentel, Rudolf .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2012, 213 (18) :1871-1878

← 1 2 3 →