Results 121 to 130 of about 17,587,514 (208)

Dehydration Process of Asparagine Monohydrate Investigatedby Terahertz Time-Domain Spectroscopy [PDF]

We have investigated dehydration process of asparagine monohydrate by terahertz time-domain spectroscopy. We observed crystal structure transformation from asparagine monohydrate to dehydrated one.
YAMAMOTO, Kohji, FUKUI, Kazutoshi, 福井, 一俊, 永岡, 一, NAGAOKA, Hitoshi, TANI, Masahiko, 山本, 晃司, 谷, 正彦   +7 more
core   +1 more source

Finite Difference Time Domain Modeling and Inversion of Internal Delamination Defects in Vehicle Cable Terminal in Terahertz Band

To address the gap in simulating internal defects within composite insulation structures in the terahertz domain for vehicle cable terminals, this paper proposes a finite difference time domain (FDTD) modeling and inversion method based on terahertz time-
Dong, Haiying, Li, Shuaibing, Dan, Jiahao, Yang, Dong, Cui, Yi, Li, Tiangeng, Kang, Yongqiang   +6 more
core   +1 more source

Time‐Modulated Optomechanics Reveal Energy Flow and Inelastic Interactions Between Acoustic Phonons in Nanomembranes

Laser &Photonics Reviews, EarlyView.
Temporal interfaces are abrupt refractive index changes used in time‐varying optics, but also transitions to nonequilibrium states. This work explores the inelastic scattering of time‐varying light by nonthermal acoustic phonons in the vicinity of temporal interfaces.
Anuj Kumar Dhiman, Piotr Graczyk, Tobias Held, Mikolaj Pochylski, Kleoniki Sympoura, Rafal Bialek, Jacek Gapinski, Bahram Djafari Rouhani, Baerbel Rethfeld, Bartlomiej Graczykowski, Thomas Vasileiadis   +10 more
wiley   +1 more source

Single‐Lens Counter‐Focused Ultrashort Laser Pulses for Enhanced Microplasma Formation Inside Silicon

Laser &Photonics Reviews, EarlyView.
A polarization‐dependent liquid–crystal spatial light modulator is used to generate coaxial double‐focus laser beams with independently tunable focal separation and intensity. Applied to silicon, this configuration enables counterpropagating pulse interactions using a single focusing element, enhancing nonlinear excitation and achieving near‐critical ...
Niladri Ganguly, David Grojo, Pol Sopeña   +2 more
wiley   +1 more source

DETECTION OF MELAMINE IN PACKAGING MATERIALS USING TERAHERTZ TIME-DOMAIN SPECTROSCOPY

Química Nova
To detect melamine in packaging materials, terahertz time-domain spectroscopy (THz-TDS) was employed to measure the terahertz absorption spectra of melamine-polyethylene mixtures with varying mass ratios (1:0-3).
Shuo Zhang, Yuanrong Yang, Kun Meng, Xinyong Zhu, Longjiang Huang, Lina Sui, Liyan Yu   +6 more
doaj   +1 more source

Leaky Topological Edge State Cavities for On‐Chip Terahertz Sensing

Laser &Photonics Reviews, EarlyView.
Engineering radiation leakage in topological edge state cavities (TESCs) turns a conventional loss channel into a resource for enhancing on‐chip terahertz‐matter interactions. Tailoring the radiation leakage of a valley photonic crystal produces guided TESC with loaded Q factors up to 14 148 and leaky TESC with 2.2‐fold higher sensitivity, reaching 150.
Wenhao Wang, Zhonglei Shen, Ranjan Singh
wiley   +1 more source

Optical Parameters of Vegetable Oil Studied by Terahertz Time-Domain Spectroscopy

, 2010
The terahertz time-domain spectra (THz-TDS) of four kinds of vegetable oils were measured in the frequency range extending from 0.2 to 1.5 THz.
Li Jiusheng
core   +1 more source

Chip‐Scale Terahertz Sensing Driven by Supercoupling Induced Transparency in Topological Cavities

Laser &Photonics Reviews, EarlyView.
Supercoupling‐induced transparency (SIT) in topological cavities enables sensitive terahertz sensing on a chip. Strong field confinement and slow light response enhance interactions with thin films, enabling thickness detection through resonance shifts and group delay changes.
Wenhao Wang, Zhonglei Shen, Ranjan Singh
wiley   +1 more source

Study on the detection method of biological characteristics of hepatoma cells based on terahertz time-domain spectroscopy. [PDF]

Biomed Opt Express, 2023
Guan H, Qiu W, Liu H, Cao Y, Tian L, Huang P, Hou D, Zhang G.   +7 more
europepmc   +1 more source

PARCE: Accurate Inference of Crystal Structure Information From Phonon Vibrational Modes

Materials Genome Engineering Advances, EarlyView.
In this work, we introduce a multidescriptor framework and accuracy‐adaptive ensemble network to classify over 30,000 crystals from phonon and Raman data, achieving > 60% accuracy across diverse structures. Our work reduces reliance on ideal XRD data, enabling automated and large‐scale material structure analysis.
Hongyu Chen, Mengyu Dai, Hongjiang Chen, Ruilin Liu, Xiaole Tian, Ruixiao Lian, Yuqian Zhang, Liujiang Zhou, Wenwu Li, Xia Cai, Hao Zhang   +10 more
wiley   +1 more source