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Conferences > OPJ > 2017 > NQO > 31aON7
  • 2017 OPJ-OSA Joint Symposia on Nanophotonics and Digital Photonics
  • OSA Technical Digest (online) (Optica Publishing Group, 2017),
  • paper 31aON7

Investigation of Tapered Optical Fiber Coated with Graphene Quantum Dots Combined Gold Nanoparticles for Detecting Lard

C.H.C. Lah, N. Jamaludin, F.Z. Rokhani, S.A. Rashid, and A.S.M. Noor

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Abstract

Optical sensing performance of tapered fiber coated with Graphene Quantum Dots (GQDs) towards lard with different concentrations is investigated. Gold nanoparticle (Au-NPs) is applied to further enhance the sensitivity of the sensor. GQDs and Au-NPs were coated onto a multimode tapered optical fiber by drop-casting technique. The developed sensor was exposed to different concentrations of lard (10% to 100%), the sensor intensity inversely proportionally in the present of Au-NPs. Fluorescence quantum yield of Au-NPs achieved was as high as 20%.

© 2017 Optical Society of Japan

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