title: Fabrication of localized surface plasmon resonance fiber probes using ionic self-assembled gold nanoparticles.
abstract: An nm-thickness composite gold thin film consisting of gold nanoparticles and polyelectrolytes is fabricated through ionic self-assembled multilayers (ISAM) technique and is deposited on end-faces of optical fibers to construct localized surface plasmon resonance (LSPR) fiber probes. We demonstrate that the LSPR spectrum induced by ISAM gold films can be fine-tuned through the ISAM procedure. We investigate variations of reflection spectra of the probe with respect to the layer-by-layer adsorption of ISAMs onto end-faces of fibers, and study the spectral variation mechanism. Finally, we demonstrated using this fiber probe to detect the biotin-streptavidin bioconjugate pair. ISAM adsorbed on optical fibers potentially provides a simple, fast, robust, and low-cost, platform for LSPR biosensing applications.
authors.affiliation: Bioengineering and Bioinformatics Program, The Methodist Hospital Research Institute, Weill Cornell Medical College, Houston, Texas 77030, USA. wmwhdz07@gmail.com
authors.forename: Miao
authors.initials: M
authors.lastname: Wan
authors.forename: Pengfei
authors.initials: P
authors.lastname: Luo
authors.forename: Jiayi
authors.initials: J
authors.lastname: Jin
authors.forename: Jiong
authors.initials: J
authors.lastname: Xing
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Wang
authors.forename: Stephen T C
authors.initials: ST
authors.lastname: Wong
mesh_terms: D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles; D020349:Surface Plasmon Resonance
chemical_list: D006046:Gold