activity
20172026
most citedDielectric cross-shaped resonator based metasurface for vortex beam generation in Mid-IR and THz wavelengths

52 citations · 79 across the 9 of their papers we have counts for

collaborators

9 papers

physics.optics2026

Nanoscale Surface Analysis of High Entropy Alloy

Hsin-Hui Huang, Meguya Ryu, Yoshiaki Nishijima +10

Nanoscale surface analysis of 1 micrometer thick high entropy alloys (HEAs) was carried out using nano-IR for hyperspectral imaging and single point spectroscopy in the 700-1700 1/…

physics.optics2026

Structure orientation determined in transmission and reflection: q-plate

Hsin-Hui Huang, Meguya Ryu, Shuji Kamegaki +9

Determination of orientation in the imaged sample/scene has a large application potential when the anisotropy of properties is analysed, usually, under a linearly polarised illumin…

physics.bio-ph2025

Anisotropy analysis of bamboo and tooth using 4-angle polarization micro-spectroscopy

Meguya Ryu, Hsin-Hui Huang, Jitraporn Vongsvivut +6

To investigate the anisotropic properties of biomaterials, two distinct classes are considered: polymer-based (e.g., cellulose in plants) and crystalline-based (e.g., enamel in tee…

cond-mat.mtrl-sci2025

Bridging Spectroscopy and Advanced Molecular Orientation Analysis with New 4+ Angle Polarization Toolbox in Quasar

Callum Gassner, Jitraporn Vongsvivut, Meguya Ryu +10

Anisotropy plays a critical role in governing the mechanical, thermal, electrical, magnetic, and optical properties of materials, influencing their behavior across diverse applicat…

physics.optics2019★ 52 cited

Dielectric cross-shaped resonator based metasurface for vortex beam generation in Mid-IR and THz wavelengths

Raghu Dharmavarapu, Ken-ichi Izumi, Ikufumi Katayama +7

Metasurfaces are engineered thin surfaces comprising two dimensional (2D) arrays of sub-wavelength spaced and sub-wavelength sized resonators. Metasurfaces can locally manipulate t…

physics.app-ph2019★ 3 cited

Nanoscale optical and structural characterisation of silk

Meguya Ryu, Reo Honda, Adrian Cernescu +10

Background: Nanoscale composition of silk defining its unique properties via a hierarchical structural anisotropy has to be analysed at the highest spatial resolution of tens-of-na…

cond-mat.mtrl-sci2018★ 24 cited

Paracetamol Micro-Structure Analysis by Optical Mapping

Reo Honda, Meguya Ryu, Armandas Balcytis +4

Domain structure of paracetamol -- popular antipyretic analgesic -- was investigated by infrared (IR) spectroscopy using synchrotron radiation. Absorbance and retardance maps revea…

physics.app-ph2017

Nanoscale chemical mapping of laser-solubilized silk

Meguya Ryu, Hanae Kobayashi, Armandas Balcytis +8

A water soluble amorphous form of silk was made by ultra-short laser pulse irradiation and detected by nanoscale IR mapping. An optical absorption-induced nanoscale surface expansi…

physics.bio-ph2017

Orientational Mapping Augmented Sub-Wavelength Hyper-Spectral Imaging of Silk

Meguya Ryu, Armandas Balcytis, Xuewen Wang +6

Molecular alignment underpins optical, mechanical, and thermal properties of materials, however, its direct measurement from volumes with micrometer dimensions is not accessible, e…