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MDPI, Sensors, 7(11), p. 7055-7062, 2011

DOI: 10.3390/s110707055

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

Journal article published in 2011 by John Canning, Angelica Lau, Masood Naqshbandi, Ingemar Petermann, Maxwell J. Crossley ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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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.