Compact strain-sensitive flexible photonic crystals for sensors

Otto L.J. Pursiainen; Jeremy J. Baumberg; Kevin Ryan; Josef Bauer; Holger Winkler; Benjamin Viel; Tilmann Ruhl

doi:10.1063/1.2032590

Compact strain-sensitive flexible photonic crystals for sensors

Otto L.J. Pursiainen, Jeremy J. Baumberg, Kevin Ryan, Josef Bauer, Holger Winkler, Benjamin Viel, Tilmann Ruhl

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	101902
Journal	Applied Physics Letters
Volume	87
Issue number	10
DOIs	https://doi.org/10.1063/1.2032590
Publication status	Published - 5 Sep 2005
Externally published	Yes

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title = "Compact strain-sensitive flexible photonic crystals for sensors",

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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AU - Baumberg, Jeremy J.

AU - Ryan, Kevin

AU - Bauer, Josef

AU - Winkler, Holger

AU - Viel, Benjamin

AU - Ruhl, Tilmann

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AB - 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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Compact strain-sensitive flexible photonic crystals for sensors

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