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Dopamine sensing and measurement using threshold and spectral measurements in random lasers

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dc.contributor.authorIsmail, WZWen_US
dc.contributor.authorLiu, GZen_US
dc.contributor.authorZhang, Ken_US
dc.contributor.authorGoldys, EMen_US
dc.contributor.authorDawes, JMen_US
dc.date.accessioned2024-05-29T02:49:43Z
dc.date.available2024-05-29T02:49:43Z
dc.date.issued2016
dc.description.abstractWe developed a novel dopamine sensing and measurement technique based on aggregation of gold nanoparticles in random lasers. Dopamine combined with copper ions triggers the aggregation of gold nanoparticles and thus affects the performance of random lasers. Dopamine sensing can be achieved using four parameters which are sensitive to the presence of dopamine, that is emission peak shift, emission linewidth, signal-to-noise ratio (peak emission intensity/noise) and random lasing threshold. The dopamine is most sensitively detected by a change in the emission linewidth with a limit of detection of 1 x 10(-7) M, as well as by an increase in the lasing threshold. The dopamine concentration from 1 x 10-7 M to 1 x 10(-2) M can be determined by calibrating with the laser threshold. (C) 2015 Optical Society of America
dc.identifier.doi10.1364/OE.24.000A85
dc.identifier.epageA91
dc.identifier.issn1094-4087
dc.identifier.issue2
dc.identifier.scopusWOS:000369066300009
dc.identifier.spageA85
dc.identifier.urihttps://oarep.usim.edu.my/handle/123456789/10917
dc.identifier.volume24
dc.languageEnglish
dc.language.isoen_USen_US
dc.publisherOptical Soc Ameren_US
dc.relation.ispartofOptics Express
dc.sourceWeb Of Science (ISI)
dc.titleDopamine sensing and measurement using threshold and spectral measurements in random lasersen_US
dc.typeArticleen_US
dspace.entity.typePublication

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