Electrowetting for Tunable Microoptics

被引:40
作者
Krogmann, Florian [1 ]
Moench, Wolfgang [1 ]
Zappe, Hans [1 ]
机构
[1] Univ Freiburg, Dept Microsyst Engn, Lab Microopt, D-79110 Freiburg, Germany
关键词
Electrowetting; electrowetting-on-dielectrics (EWOD); liquid lenses; microlenses; microoptics;
D O I
10.1109/JMEMS.2008.2007256
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The design, fabrication, and optical properties of tunable liquid microoptical components based on electrowetting are presented. Two optical microsystems are discussed: a single liquid microlens with tunable focal length, centered and stabilized in a micromachined positioning structure, and laterally repositionable tunable liquid microlens arrays. The latter employs electrowetting for lateral movement as well as focal length tuning of the optical elements. Through the use of novel microstructuring techniques, a high positioning accuracy may be achieved with low electrode count.
引用
收藏
页码:1501 / 1512
页数:12
相关论文
共 42 条
[1]   Tunable optical fiber devices based on broadband long-period gratings and pumped microfluidics [J].
Acharya, BR ;
Krupenkin, T ;
Ramachandran, S ;
Wang, Z ;
Huang, CC ;
Rogers, JA .
APPLIED PHYSICS LETTERS, 2003, 83 (24) :4912-4914
[2]  
Adamson A.W., 1967, Physical chemistry of surfaces
[3]   Liquid lens technology: Principle of electrowetting based lenses and applications to imaging [J].
Berge, B .
MEMS 2005 Miami: Technical Digest, 2005, :227-230
[4]  
BERGE B, 1993, CR ACAD SCI II, V317, P157
[5]   Variable focal lens controlled by an external voltage: An application of electrowetting [J].
Berge, B ;
Peseux, J .
EUROPEAN PHYSICAL JOURNAL E, 2000, 3 (02) :159-163
[6]  
Cho SK, 2003, PROC IEEE MICR ELECT, P686
[7]   Creating, transporting, cutting, and merging liquid droplets by electrowetting-based actuation for digital microfluidic circuits [J].
Cho, SK ;
Moon, HJ ;
Kim, CJ .
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 2003, 12 (01) :70-80
[8]   AN INVESTIGATION OF ELECTROWETTING-BASED MICROACTUATION [J].
COLGATE, E ;
MATSUMOTO, H .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1990, 8 (04) :3625-3633
[9]   Liquid lens based on electrowetting: a new adaptive component for imaging applications in consumer electronics [J].
Crassous, J ;
Gabay, C ;
Liogier, G ;
Berge, B .
ADAPTIVE OPTICS AND APPLICATIONS III, 2004, 5639 :143-148
[10]  
Daly D., 2000, MICROLENS ARRAYS