Planar optical waveguides for sensing applications

Lavers, C. R.; Itoh, Kiminori; Wu, Shiyou; Murabayashi, Masayuki; Mauchline, Iain; Stewart, George; Stout, T

doi:10.1016/s0925-4005(00)00412-3

Cited by 80 publications

(29 citation statements)

References 32 publications

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“…Numerous types of biosensors exist, where the transduction of the biological variable is based on the detection of an optical signal such as absorbance, reflectance, or fluorescence (Domachuk et al, 2007;Lavers et al, 2000;Ramsden, 1997;Wilson and Gifford, 2005). Typical photonic structures used in sensing applications include planar waveguides, capillary sensors, and arrays (Borisov and Wolfbeis, 2008;Wolfbeis, 1991).…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of gelatin‐based biopolymeric optical waveguides

Manocchi

Domachuk

Omenetto

et al. 2009

Biotech & Bioengineering

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The rapid development in optical detection techniques for sensing applications has led to an increased need for biocompatible, biodegradable, and disposable optical components. We present a controllable fabrication technique for an entirely biopolymeric planar optical waveguide via simple spin-coating. The refractive index difference, thermal responsive properties, and inherent biocompatibility of gelatin and agarose were exploited in the fabrication of thin, stacked films that efficiently guide light in a core layer with higher index of refraction. These planar waveguides were fabricated using a simple spin-coating technique, which resulted in controllable layer thicknesses and smooth layer interfaces. This technique, therefore, offers a path for routine engineering of biopolymer structures with contrasting refractive indices. The thermal stability of the gelatin core layer was improved using two crosslinkers; glutaraldehyde or microbial Transglutaminase. Light guiding in the core layer of the waveguide was demonstrated using a simple He-Ne laser setup. Guiding efficiency was further illustrated by directly embedding fluorescent markers within the core layer and detecting their spectral signature. Combined with the biopolymers' inherent biocompatibility and biodegradability, our simple strategy to fabricate disposable optical components holds the potential for the development of applications in biological sensing and implantable biomedical devices.

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Section: Introductionmentioning

confidence: 99%

Facile fabrication of gelatin‐based biopolymeric optical waveguides

Manocchi

Domachuk

Omenetto

et al. 2009

Biotech & Bioengineering

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“…Moreover the attachment of marine Pseudomonas spices to variety of surfaces was investigated and it was found that these bacteria are attached not only on special carbon sources (nicotine, toluene etc.) but also on some hydrophobic plastic (Teflon, polyethylene) with little or no surface charge [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity improvement of graphene based surface plasmon resonance biosensors with chaclogenide prism

Verma

Prakash

Tripathi

2016

Optik

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“…The development of planar optical waveguides (POW) has recently attracted great interest as an alternative route to the integration of optical devices on a single chip for many applications including integrated optical devices, optical storage, and telecommunications and sensing [1][2][3][4]. POWs are similar in structure to optical fibres (a high refractive index core surrounded by a low refractive index cladding), except that they are formed in thin coatings and have a square rather than circular cross-section.…”

Section: Introductionmentioning

confidence: 99%