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Compact strain-sensitive flexible photonic crystals for sensors

Compact strain-sensitive flexible photonic crystals for sensors
Compact strain-sensitive flexible photonic crystals for sensors
A promising fabrication route to produce absorbing flexible photonic crystals is presented, which exploits self-assembly during the shear processing of multi-shelled polymer spheres. When absorbing material is incorporated in the interstitial space surrounding high-refractive-index spheres, a dramatic enhancement in the transmission edge on the short-wavelength side of the band gap is observed. This effect originates from the shifting optical field spatial distribution as the incident wavelength is tuned around the band gap, and results in a contrast up to 100 times better than similar but nonabsorbing photonic crystals. An order-of-magnitude improvement in strain sensitivity is shown, suggesting the use of these thin films in photonic sensors.
0003-6951
101902-[3pp]
Pursiainen, O.L.J.
26bf8b2f-59f6-42ed-904c-cb16f8cd8de8
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Ryan, K.
8053f72f-2abf-4a56-8e52-b58df1fdce91
Bauer, J.
93e20ad8-a876-411f-be1d-02ddce12c75f
Winkler, H.
7249c21b-5d0d-418d-aa75-b70ce447b84a
Viel, B.
5a9080ce-d91f-4e94-82be-85a6d267e745
Ruhl, T.
0c8eca88-f5a3-42ae-a843-022201b6464e
Pursiainen, O.L.J.
26bf8b2f-59f6-42ed-904c-cb16f8cd8de8
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Ryan, K.
8053f72f-2abf-4a56-8e52-b58df1fdce91
Bauer, J.
93e20ad8-a876-411f-be1d-02ddce12c75f
Winkler, H.
7249c21b-5d0d-418d-aa75-b70ce447b84a
Viel, B.
5a9080ce-d91f-4e94-82be-85a6d267e745
Ruhl, T.
0c8eca88-f5a3-42ae-a843-022201b6464e

Pursiainen, O.L.J., Baumberg, J.J., Ryan, K., Bauer, J., Winkler, H., Viel, B. and Ruhl, T. (2005) Compact strain-sensitive flexible photonic crystals for sensors. Applied Physics Letters, 87 (10), 101902-[3pp]. (doi:10.1063/1.2032590).

Record type: Article

Abstract

A promising fabrication route to produce absorbing flexible photonic crystals is presented, which exploits self-assembly during the shear processing of multi-shelled polymer spheres. When absorbing material is incorporated in the interstitial space surrounding high-refractive-index spheres, a dramatic enhancement in the transmission edge on the short-wavelength side of the band gap is observed. This effect originates from the shifting optical field spatial distribution as the incident wavelength is tuned around the band gap, and results in a contrast up to 100 times better than similar but nonabsorbing photonic crystals. An order-of-magnitude improvement in strain sensitivity is shown, suggesting the use of these thin films in photonic sensors.

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Published date: August 2005

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Local EPrints ID: 17391
URI: http://eprints.soton.ac.uk/id/eprint/17391
ISSN: 0003-6951
PURE UUID: 2034faaf-9e48-463a-8f0a-40afa90da5c3

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Date deposited: 06 Sep 2005
Last modified: 15 Mar 2024 05:59

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Contributors

Author: O.L.J. Pursiainen
Author: J.J. Baumberg
Author: K. Ryan
Author: J. Bauer
Author: H. Winkler
Author: B. Viel
Author: T. Ruhl

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