Related Experiment Video
Updated: Mar 16, 2026
Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
Published on: September 2, 2017
Highly Sensitive Plasmonic Optical Sensors Based on Gold Core-Satellite Nanostructures Immobilized on Glass
Kentaro Ode1, Mai Honjo1, Yohei Takashima1
1Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University , 7-1-20 minatojimaminami, Chuo-ku, Kobe 650-0047, Japan.
Abstract:
Fabrication of discrete nanostructures consisting of noble metal nanoparticles immobilized on substrates is challenging because of structural complexity but important for chip-based plasmonic sensor technology. Here we report optical sensing capabilities of core-satellite nanostructures made of gold nanoparticles immobilized on glass substrate, which were fabricated by combining stepwise interconnection of gold nanoparticles through dithiol linkers and surface treatment using vacuum ultraviolet light. The nanostructures exhibit large changes in coupled plasmon resonance peak upon surrounding refractive index, with sensitibity of ca. 350 nm RIU(-1), thus providing highly sensitive optical sensors for determining the surrounding refractive index and detecting organic vapors.
