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Sub-microwatt direct laser writing of fluorescent gold nanoclusters in polymer films

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Sub-microwatt direct laser writing of fluorescent gold nanoclusters in polymer films. / Bitarafan, Mohammad H.; Suomala, Sofia; Toivonen, Juha.

In: Optical Materials Express, Vol. 10, No. 1, 2020, p. 138-148.

Research output: Contribution to journalArticleScientificpeer-review

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Bitarafan, MH, Suomala, S & Toivonen, J 2020, 'Sub-microwatt direct laser writing of fluorescent gold nanoclusters in polymer films', Optical Materials Express, vol. 10, no. 1, pp. 138-148. https://doi.org/10.1364/OME.381901

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Author

Bitarafan, Mohammad H. ; Suomala, Sofia ; Toivonen, Juha. / Sub-microwatt direct laser writing of fluorescent gold nanoclusters in polymer films. In: Optical Materials Express. 2020 ; Vol. 10, No. 1. pp. 138-148.

Bibtex - Download

@article{80decbe05e554b81841153a454cbccbb,
title = "Sub-microwatt direct laser writing of fluorescent gold nanoclusters in polymer films",
abstract = "We report on the micro-pattering of fluorescent gold nanoclusters embedded in polyvinyl alcohol film using a low-cost continuous-wave laser. We show that the formation of gold nanoclusters requires low-level laser irradiation (<100 W/cm2), corresponding to a sub-microwatt focused beam. This low-intensity requirement enables substantially higher speed and cost-effective light patterning process. As a result of using only small intensities during gold nanoclusters production, no microscopic topological changes were observed in the polymer film. This class of gold nanoclusters potentially finds application in high-speed authenticity marking and similar labeling applications.",
author = "Bitarafan, {Mohammad H.} and Sofia Suomala and Juha Toivonen",
note = "INT=phys,{"}Bitarafan, Mohammad H.{"} INT=phys,{"}Suomala, Sofia{"}",
year = "2020",
doi = "10.1364/OME.381901",
language = "English",
volume = "10",
pages = "138--148",
journal = "Optical Materials Express",
issn = "2159-3930",
publisher = "OPTICAL SOC AMER",
number = "1",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Sub-microwatt direct laser writing of fluorescent gold nanoclusters in polymer films

AU - Bitarafan, Mohammad H.

AU - Suomala, Sofia

AU - Toivonen, Juha

N1 - INT=phys,"Bitarafan, Mohammad H." INT=phys,"Suomala, Sofia"

PY - 2020

Y1 - 2020

N2 - We report on the micro-pattering of fluorescent gold nanoclusters embedded in polyvinyl alcohol film using a low-cost continuous-wave laser. We show that the formation of gold nanoclusters requires low-level laser irradiation (<100 W/cm2), corresponding to a sub-microwatt focused beam. This low-intensity requirement enables substantially higher speed and cost-effective light patterning process. As a result of using only small intensities during gold nanoclusters production, no microscopic topological changes were observed in the polymer film. This class of gold nanoclusters potentially finds application in high-speed authenticity marking and similar labeling applications.

AB - We report on the micro-pattering of fluorescent gold nanoclusters embedded in polyvinyl alcohol film using a low-cost continuous-wave laser. We show that the formation of gold nanoclusters requires low-level laser irradiation (<100 W/cm2), corresponding to a sub-microwatt focused beam. This low-intensity requirement enables substantially higher speed and cost-effective light patterning process. As a result of using only small intensities during gold nanoclusters production, no microscopic topological changes were observed in the polymer film. This class of gold nanoclusters potentially finds application in high-speed authenticity marking and similar labeling applications.

U2 - 10.1364/OME.381901

DO - 10.1364/OME.381901

M3 - Article

VL - 10

SP - 138

EP - 148

JO - Optical Materials Express

JF - Optical Materials Express

SN - 2159-3930

IS - 1

ER -