Probing Inherent Optical Anisotropy in Substrates via Direct Nanoimaging of Mie Scattering.
Hwi Je WooJaewon HanSangmin JiBong Gyu ShinSeong Hun ParkSung-Gyu LeeChang-Won LeeEuyheon HwangDeok-Soo KimSoobong ChoiMun Seok JeongGi-Ra YiJunki KimYoung Jae SongPublished in: ACS nano (2024)
In this study, we investigated the optical properties of a transition metal dichalcogenide (TMD) substrate via Mie-scattering-induced surface analysis (MISA). Employing near-field optical microscopy and finite-difference time-domain (FDTD) simulations, we systemically prove and directly visualize the Mie scattering of superspherical gold nanoparticles (s-AuNPs) at the nanoscale. Molybdenum disulfide substrates exhibited optical isotropy, while rhenium disulfide (ReS 2 ) substrates showed anisotropic behavior attributed to the interaction with incident light's electric field. Our study revealed substantial anisotropic trends in Mie scattering, particularly in the near-infrared energy range, with ReS 2 exhibiting more pronounced spectral and angular responses in satellite peaks. Our results emphasize the application of Mie scattering, exploring the optical properties of substrates and contributing to a deeper understanding of nanoscale light-matter interactions.
Keyphrases
- high speed
- high resolution
- gold nanoparticles
- atomic force microscopy
- monte carlo
- transition metal
- cardiovascular disease
- optical coherence tomography
- magnetic resonance imaging
- molecular dynamics
- single cell
- diabetic rats
- high throughput
- molecular dynamics simulations
- mass spectrometry
- amino acid
- reduced graphene oxide