Surface Plasmon Resonance of Two-Dimensional Gold Colloidal Crystals Formed on Gold Plates

• Published in: Chemical & pharmaceutical bulletin Vol. 70; no. 2; pp. 130 - 137
• Main Authors: Aoyama, Yurina, Toyotama, Akiko, Okuzono, Tohru, Hirashima, Naohide, Imai, Hiroki, Uchida, Fumio, Takiguchi, Yoshihiro, Yamanaka, Junpei
• Format: Journal Article
• Language: English
• Published: Japan The Pharmaceutical Society of Japan 01.02.2022; Japan Science and Technology Agency
• Subjects: Aqueous solutions; Biomarkers; Biosensors; Colloids; Crystallization; Crystals; Electromagnetic radiation; Ethylene glycol; Ethylene Glycol - chemistry; Fano resonance; Free electrons; Glass substrates; Gold; Gold - chemistry; Gold coatings; Gold Colloid - chemistry; gold particle; Heavy metals; Metal Nanoparticles - chemistry; metal–insulator–metal structure; Particle Size; Pharmaceuticals; Refractivity; Solutions; Surface Plasmon Resonance; Thin films; two-dimensional colloidal crystal; gold particle; Fano resonance; metal–insulator–metal structure; surface plasmon resonance; two-dimensional colloidal crystal

The free electrons inside precious metals such as Au vibrate when the surface of the metal is irradiated with an electromagnetic wave of an appropriate frequency. This oscillation is referred to as surface plasmon resonance (SPR), and the resonance frequency varies with permittivity of the medium ar...