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Sensors 2011, 11(7), 7055-7062; doi:10.3390/s110707055
Article

Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware

1,2,* , 1,2
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1 Interdisciplinary Photonic Laboratories (iPL), School of Chemistry, The University of Sydney, NSW 2006, Australia 2 School of Chemistry, The University of Sydney, NSW 2006, Australia
* Author to whom correspondence should be addressed.
Received: 18 May 2011 / Revised: 17 June 2011 / Accepted: 21 June 2011 / Published: 6 July 2011
(This article belongs to the Section Physical Sensors)
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Abstract

The blue OLED emission from a mobile phone was characterised, revealing a sharp emission band centred at λ = 445 nm with a 3dB bandwidth Δλ ~ 20 nm. It was used to excite Rhodamine 123 doped within a “giant” mesostructured silica sphere during fabrication through evaporative self-assembly of silica nanoparticles. Fluorescence was able to be detected using a standard optical microscope fitted with a green transmission pass filter and cooled CCD and with 1 ms exposure time demonstrating the potential of mobile platforms as the basis for portable diagnostics in the field.
Keywords: biological sensing and sensors; optical diagnostics for medicine; fluorescence; optoelectronics; light-emitting diodes; fluorescence microscopy; nanomaterials; silica; optical instruments; smartphones; mobile platforms biological sensing and sensors; optical diagnostics for medicine; fluorescence; optoelectronics; light-emitting diodes; fluorescence microscopy; nanomaterials; silica; optical instruments; smartphones; mobile platforms
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Canning, J.; Lau, A.; Naqshbandi, M.; Petermann, I.; Crossley, M.J. Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware. Sensors 2011, 11, 7055-7062.

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