Conversion of just-continuous metallic films to large particulate substrates for metal-enhanced fluorescence

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https://pubs.aip.org/aip/jap/article/103/8/084307/928874/Conversion-of-just-continuous-metallic-films-to

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https://doi.org/10.1063/1.2905319
 http://hdl.handle.net/11603/36563

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UMBC Chemistry & Biochemistry Department
UMBC Institute of Fluorescence (IoF)

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0002-9110-6374

Date

2008-04-25

Type of Work

journal articles
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Program

Citation of Original Publication

Aslan, Kadir, Stuart N. Malyn, Yongxia Zhang, and Chris D. Geddes. “Conversion of Just-Continuous Metallic Films to Large Particulate Substrates for Metal-Enhanced Fluorescence.” Journal of Applied Physics 103, no. 8 (April 25, 2008): 084307. https://doi.org/10.1063/1.2905319.

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This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Aslan, Kadir, Stuart N. Malyn, Yongxia Zhang, and Chris D. Geddes. “Conversion of Just-Continuous Metallic Films to Large Particulate Substrates for Metal-Enhanced Fluorescence.” Journal of Applied Physics 103, no. 8 (April 25, 2008): 084307. https://doi.org/10.1063/1.2905319 and may be found at https://pubs.aip.org/aip/jap/article/103/8/084307/928874/Conversion-of-just-continuous-metallic-films-to.

Subjects

Abstract

We report the effects of thermally annealing, non-, just-, and thick continuous silver films for their potential applications in metal-enhanced fluorescence, a near-field concept which can alter the free-space absorption and emissive properties of close-proximity fluorophores (excited states). We have chosen to anneal a noncontinuous particulate film 5nm thick and two thicker continuous films, 15 and 25nm thick, respectively. Our results show that the annealing of the 25nm film has little effect on close-proximity fluorescence when coated with a monolayer of fluorophore-labeled protein. However, the 15nm continuous film cracks upon annealing, producing large nanoparticles which are ideal for enhancing the fluorescence of close-proximity fluorophores that are indeed difficult to prepare by other wet-chemical deposition processes. The annealing of 5nm noncontinuous particulate films (a control sample) has little influence on metal-enhanced fluorescence, as expected.