Chemosensing on Miniaturized Plasmonic Substrates

Pengcheng Wang (1) , Rodica Elena Ionescu (1)

1 L2n - Lumière, nanomatériaux et nanotechnologies

Round, small-sized coverslips were coated for the first time with thin layers of indium tin oxide (ITO, 10–40 nm)/gold (Au, 2–8 nm) and annealed at 550 °C for several hours. The resulting nanostructures on miniaturized substrates were further optimized for the localized surface plasmon resonance (LSPR) chemosensing of a model molecule—1,2-bis-(4-ppyridyl)-ethene (BPE)—with a detection limit of 10−12 M BPE in an aqueous solution. All the fabrication steps of plasmonic-annealed platforms were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM).

Domains: Analytical chemistry; Material chemistry; Theoretical and/or physical chemistry; Environmental Sciences; Environmental Engineering; Life Sciences [q-bio]; Molecular biology; Biotechnology; Biomaterials; Imaging; Food engineering; Ecotoxicology; Toxicology and food chain; Micro and nanotechnologies/Microelectronics; Optics / Photonic; Materials; Polymers

Pengcheng Wang, Rodica Elena Ionescu. Chemosensing on Miniaturized Plasmonic Substrates. Micromachines, 2021, 12 (3), pp.275. ⟨10.3390/mi12030275⟩. ⟨hal-03619708⟩