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Gold Nano-Island Platforms for Localized Surface Plasmon Resonance Sensing: A Short Review.
Badilescu, Simona; Raju, Duraichelvan; Bathini, Srinivas; Packirisamy, Muthukumaran.
  • Badilescu S; Micro-Nano-Bio Integration Center, Optical-Bio Microsystems Laboratory, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
  • Raju D; Micro-Nano-Bio Integration Center, Optical-Bio Microsystems Laboratory, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
  • Bathini S; Micro-Nano-Bio Integration Center, Optical-Bio Microsystems Laboratory, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
  • Packirisamy M; Micro-Nano-Bio Integration Center, Optical-Bio Microsystems Laboratory, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.
Molecules ; 25(20)2020 Oct 13.
Article in English | MEDLINE | ID: covidwho-1305732
ABSTRACT
Nano-islands are entities (droplets or other shapes) that are formed by spontaneous dewetting (agglomeration, in the early literature) of thin and very thin metallic (especially gold) films on a substrate, done by post-deposition heating or by using other sources of energy. In addition to thermally generated nano-islands, more recently, nanoparticle films have also been dewetted, in order to form nano-islands. The localized surface plasmon resonance (LSPR) band of gold nano-islands was found to be sensitive to changes in the surrounding environment, making it a suitable platform for sensing and biosensing applications. In this review, we revisit the development of the concept of nano-island(s), the thermodynamics of dewetting of thin metal films, and the effect of the substrate on the morphology and optical properties of nano-islands. A special emphasis is made on nanoparticle films and their applications to biosensing, with ample examples from the authors' work.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Point-of-Care Systems / Surface Plasmon Resonance / Nanocomposites / Gold Limits: Animals / Humans Language: English Journal subject: Biology Year: 2020 Document Type: Article Affiliation country: Molecules25204661

Full text: Available Collection: International databases Database: MEDLINE Main subject: Point-of-Care Systems / Surface Plasmon Resonance / Nanocomposites / Gold Limits: Animals / Humans Language: English Journal subject: Biology Year: 2020 Document Type: Article Affiliation country: Molecules25204661