FDTD Simulations for Rhodium and Platinum Nanoparticles for UV Plasmonics.
Andrey Yurevich ZyubinIgor Igorevich KonDarya Alexeevna PoltorabatkoIlia Gennadievich SamusevPublished in: Nanomaterials (Basel, Switzerland) (2023)
The article describes the results of finite-difference time-domain (FDTD) mathematical modeling of electromagnetic fields distortion near the surfaces of two transition metals: rhodium (Rh) and platinum (Pt) on glass (SiO 2 ) substrates. Results were compared with calculated optical properties of classical SERS generating metals (Au and Ag). We have performed FDTD-based theoretical calculations for UV SERS-active nanoparticles (NPs) and structures based on hemispheres of Rh and Pt and planar surfaces, consisting of single NPs with varied gaps between them. The results have been compared with gold stars, silver spheres and hexagons. The prospects of the theoretical approach for single NPs and planar surfaces modeling to evaluate optimal field amplification and light scattering parameters have been shown. The presented approach could be applied as a basis for performing the methods of controlled synthesis for LPSR tunable colloidal and planar metal-based biocompatible optical sensors for UV and deep-UV plasmonics. The difference between UV-plasmonic NPs and plasmonics in a visible range has been evaluated.
Keyphrases
- gold nanoparticles
- sensitive detection
- aqueous solution
- biofilm formation
- high resolution
- oxide nanoparticles
- monte carlo
- health risk
- human health
- quantum dots
- raman spectroscopy
- high frequency
- escherichia coli
- drug delivery
- pseudomonas aeruginosa
- risk assessment
- silver nanoparticles
- density functional theory
- candida albicans
- visible light
- energy transfer
- drug release
- single molecule