NDLI: PNIPAM: a thermo-activated nano-material for use in optical devices

Content Provider	Springer Nature Link
Author	Mias, Solon Sudor, Jan Camon, Henri
Copyright Year	2007
Abstract	In this paper we describe the use of thermo-activated PNIPAM nano-material in optical switching devices. In other publications, the PNIPAM is used either as a carrier for crystalline colloidal array self-assemblies or as micro-particles that serve as pigment bags. In this publication we use a simpler-to-fabricate pure PNIPAM solution in a semi-dilute regime. The PNIPAM devices produced are transparent at temperatures below a critical temperature of 32°C and become diffusing above this temperature. We show that at 632 nm the transmission through the devices is about 75% in the transparent state while the additional attenuation achieved in the diffusing state is of the order of 38 dB. The experimental fall and rise times obtained are large (about 300 ms and 5 s, respectively) due to the non-optimised thermal addressing scheme. In addition, spectral measurements taken in the infrared spectrum (700–1,000 nm) demonstrate that the cell response is flat over a large portion of the infrared spectrum in both the transparent and the diffusing states.
Starting Page	691
Ending Page	695
Page Count	5
File Format	PDF
ISSN	09467076
Journal	Microsystem Technologies
Volume Number	14
Issue Number	4-5
e-ISSN	14321858
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-10-30
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical switching Thermal activation PNIPAM Operating Procedures, Materials Treatment Mechanical Engineering Nanotechnology Electronics and Microelectronics, Instrumentation
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Hardware and Architecture

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