Search Results - "Yao, Yuanzhao"
-
1
Design and Observation of Topological Band Gaps and Edge Modes of SOI Photonic Crystal Slabs in the Mid-Infrared Range
Published in Journal of the Physical Society of Japan (15-11-2023)“…We successfully materialized a complete common band gap of a 6.0% width relative to the mid-gap frequency for transverse-electric-like eigenmodes, which was…”
Get full text
Journal Article -
2
Mid-IR Dirac-cone dispersion relation materialized in SOI photonic crystal slabs
Published in Optics express (03-02-2020)“…We materialized the isotropic Dirac-cone dispersion relation in the mid-infrared range by fabricating photonic crystal slabs of the C symmetry in SOI…”
Get full text
Journal Article -
3
Angle-resolved reflection spectra of Dirac cones in triangular-lattice photonic crystal slabs
Published in Optics express (20-07-2020)“…The dispersion relation and the angle-resolved reflection spectra of triangular-lattice photonic crystal slabs of the C 6 v symmetry were examined by the…”
Get full text
Journal Article -
4
Apparatus for High-Precision Angle-Resolved Reflection Spectroscopy in the Mid-Infrared Region
Published in Applied spectroscopy (01-03-2021)“…Fourier transform (FT) spectroscopy is a versatile technique for studying the infrared (IR) optical response of solid-, liquid-, and gas-phase samples. In…”
Get full text
Journal Article -
5
Spontaneous Folding of CdTe Nanosheets Induced by Ligand Exchange
Published in Chemistry of materials (13-03-2018)“…Two-dimensional (2D) semiconductors exhibit unique electronic and optical properties arising from the atomic-scale thickness and two-dimensional electronic…”
Get full text
Journal Article -
6
Observation of Two-dimensional Isotropic Double Dirac Cones in the Electromagnetic Dispersion Relation
Published in Journal of the Physical Society of Japan (15-08-2022)“…We report on the first experimental observation of two-dimensional isotropic double Dirac cones in the electromagnetic dispersion relation, which were…”
Get full text
Journal Article -
7
Self-assembly of vertically aligned quantum ring-dot structure by Multiple Droplet Epitaxy
Published in Journal of crystal growth (01-11-2017)“…•Growth of vertically aligned quantum ring+dot structures.•Complete site-selectivity of QDs in indentation of ring by controlling geometry.•Flexibility in…”
Get full text
Journal Article -
8
In situ monitoring of stacking fault formation and its carrier lifetime mediation in p -type 4H-SiC
Published in Applied physics letters (28-07-2014)“…Using the fine control of an electron beam (e-beam) in scanning electron microscopy with the capabilities of both electrical and optical imaging, the stacking…”
Get full text
Journal Article -
9
Carrier Transfer in Closely Stacked GaAs/AlGaAs Quantum Dots Grown by Using Droplet Epitaxy
Published in Journal of the Korean Physical Society (01-06-2018)“…We investigate the carrier transfer in stacked droplet epitaxially grown GaAs quantum dots (QDs) in experiments and calculations. While in the…”
Get full text
Journal Article -
10
Exciton states of II–VI tetrapod-shaped nanocrystals
Published in Optical materials express (01-07-2013)“…Excitons of tetrapod-shaped nanocrystals made of CdTe, CdS, CdSe, ZnTe, and ZnSe were investigated systematically by numerical diagonalization of configuration…”
Get full text
Journal Article -
11
Dirac Cones in Periodically Modulated Quantum Wells
Published in Journal of the Physical Society of Japan (15-06-2016)Get full text
Journal Article -
12
Solvothermal Synthesis of Ultrathin Cesium Lead Halide Perovskite Nanoplatelets with Tunable Lateral Sizes and Their Reversible Transformation into Cs4PbBr6 Nanocrystals
Published in Chemistry of materials (12-06-2018)“…The versatility of perovskite crystal structure has become the great advantage of lead halide perovskite nanocrystals (NCs) during their functional…”
Get full text
Journal Article -
13
Dirac Cones in Periodically Modulated Quantum Wells
Published in Journal of the Physical Society of Japan (01-06-2016)“…We show by a degenerate k - p perturbation theory and group theory that Dirac cones in the Brillouin-zone center can be materialized for the electronic bands…”
Get full text
Journal Article -
14
Acceptance characterization of electron detector in SEM using stainless steel sphere
Published in Microscopy (16-10-2024)“…Although modern scanning electron microscope (SEM) possess several electron detectors, it is not clear what kind of information is contained in a SEM image…”
Get full text
Journal Article -
15
Eigenmode symmetry assignment of triangular-lattice photonic crystal slabs and their Dirac cones materialized by effective degeneracy in the mid-infrared region
Published in Optics express (21-06-2021)“…We measured angle-resolved reflection spectra of triangular-lattice photonic crystal slabs fabricated in a silicon-on-insulator wafer in the mid-infrared…”
Get full text
Journal Article -
16
Strain effects on optical properties of tetrapod-shaped CdTe/CdS core–shell nanocrystals
Published in Superlattices and microstructures (01-12-2014)“…•The exciton states of type-II CdTe/CdS core–shell tetrapod were theoretically investigated.•The strain promotes the type-II nature of core–shell tetrapod by…”
Get full text
Journal Article -
17
Improved power and far-field pattern of surface-emitting quantum cascade lasers with strain compensation to operate at 4.3 μm
Published in Japanese Journal of Applied Physics (01-05-2022)“…We fabricated surface-emitting quantum cascade lasers with photonic crystal resonators whose active layers were strain-compensated InGaAs/AlInAs multiple…”
Get full text
Journal Article -
18
-
19
Design and Characteristics of Photonic Crystal Resonators for Surface-Emitting Quantum Cascade Lasers
Published in Photonics (30-10-2024)“…We present our recent development of the surface-emitting quantum cascade laser with a PC (photonic crystal) resonator and a strain-compensated MQW (multiple…”
Get full text
Journal Article -
20
Scroll-like Alloyed CdS x Se 1– x Nanoplatelets: Facile Synthesis and Detailed Analysis of Tunable Optical Properties
Published in Chemistry of materials (24-01-2017)Get full text
Journal Article