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research article

Mechanically tuneable microoptical structure based on PDMS

Cadarso, V. J.  
•
Llobera, A.
•
Villanueva, Guillermo  
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2010
Sensors and Actuators A: Physical

A system of two solid microlenses with uncoupled optical properties is presented. This structure has been designed in order to have one lens as a reference, while the other one can be mechanically tuneable. The reference lens presents a diameter of 2 mu m and it is placed in the optical axis of the mechanically tuneable lens, which has a diameter of 10 mu m. The proposed microoptical structure has been fabricated in poly(dimethilsiloxane) (PDMS) merging deep reactive ion etching, SU-8 and soft lithography, with a low-cost (mass-production), simple and highly repetitive technology. This device was numerically simulated prior to its fabrication, to optimize its design and improve its behaviour. In addition, an optical characterization of the fabricated devices was carried out. Both simulation and experimental results shows a good agreement, under mechanical actuation behaviour of the reference lens is invariable, while the tuneable lens become an elliptic lens and the interval of Sturm can be observed. These results provide a proof of concept of the proposed devices and validate both the design and the fabrication technology. (C) 2010 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.sna.2010.02.025
Author(s)
Cadarso, V. J.  
Llobera, A.
Villanueva, Guillermo  
Plaza, J. A.
Brugger, Jürgen  
Dominguez, C.
Date Issued

2010

Publisher

Elsevier

Published in
Sensors and Actuators A: Physical
Volume

162

Issue

2

Start page

260

End page

266

Subjects

microlenses

•

tuneable focus

•

pdms

•

microlens arrays

•

polydimethylsiloxane pdms

•

embossing process

•

soft-lithography

•

fabrication

•

devices

•

laser

Note

Cadarso, VJ Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland Inst Microelect Barcelona IMB CNM CSIC, Barcelona 08193, Spain, Sp. Iss. SI, 663XQ, Times Cited:0, Cited References Count:26

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

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Available on Infoscience
August 6, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/93790
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