Authors:
C. Kortz
;
A. Hein
and
E. Oesterschulze
Affiliation:
University of Kaiserslautern, Germany
Keyword(s):
Miniaturized Iris, Electrochromism, Viologen, Titanium Dioxide.
Related
Ontology
Subjects/Areas/Topics:
Computational Optical Sensing and Imaging
;
Optical Instrumentation
;
Optics
;
Photonic and Optoelectronic Materials and Devices
;
Photonics
;
Photonics, Optics and Laser Technology
Abstract:
The miniaturization of a classical iris consisting of blades which are moved towards the path of light is limited,
due to the size of the actuators and the additional space needed for blade storage when the iris is completely
open. To overcome these limitations we present a fast switching, non-mechanical micro iris based on electrochromic
molecules, namely viologens, which are adsorbed onto a titanium dioxide nanoporous electrode.
Measurements of the energy consumption, the response time and the spectral light transmission are presented.
The complete fabrication route and the life time of the device are discussed in detail.