Results 271 to 280 of about 48,397 (306)

Terahertz time-domain spectroscopy for textile identification

Applied Optics, 2013
A range of natural and artificial textiles are examined using terahertz time-domain spectroscopy. Different types of textiles are shown to have different terahertz optical properties, which may be employed for textile identification and to combat textile counterfeiting.
M, Naftaly, J F, Molloy, G V, Lanskii, K A, Kokh, Yu M, Andreev   +4 more
openaire   +2 more sources

Terahertz time-domain spectroscopy and micro-cavity components for probing samples: a review

Frontiers of Information Technology & Electronic Engineering, 2019
We give a brief review of the developments in terahertz time-domain spectroscopy (THz-TDS) systems and micro-cavity components for probing samples in the University of Shanghai for Science and Technology.
Lin Chen, Deng-gao Liao, Xu Guo, Jia-yu Zhao, Yiming Zhu, Song-lin Zhuang   +5 more
semanticscholar   +1 more source

High-sensitivity identification of aflatoxin B1 and B2 using terahertz time-domain spectroscopy and metamaterial-based terahertz biosensor

Journal of Physics D: Applied Physics, 2020
Aflatoxin B1 and B2 are extremely toxic to humans and commonly found in agricultural and food products. Thus, rapid and accurate detection and identification of these substances is essential to prevent human and animal health problems due to their ...
Rong Zhao, B. Zou, Guling Zhang, Dongqian Xu, Yuping Yang   +4 more
semanticscholar   +1 more source

Terahertz time-domain spectroscopy

2007
The terahertz, or far-infrared, region of the electromagnetic spectrum is of critical importance in the spectroscopy of condensed matter systems. The electronic properties of semiconductors and metals are greatly influenced by bound states (e.g., excitons and Cooper pairs) whose energies are resonant with terahertz photons.
Martin C. Nuss, Joseph Orenstein
openaire   +1 more source

Dual-Mode Terahertz Time-Domain Spectroscopy System

IEEE Transactions on Terahertz Science and Technology, 2013
Terahertz time-domain spectroscopy (THz-TDS) systems traditionally operate in a single mode, either in reflection or transmission. In cases where the sample has nonunity permeability, measurements in both reflection and transmission geometries are required.
Ung, B., Li, J., Lin, H., Fischer, B., Withayachumnankul, W., Abbott, D.   +5 more
openaire   +3 more sources

Metal-wire terahertz time-domain spectroscopy

Applied Physics Letters, 2005
Terahertz (THz) pulses propagating on a metal-wire waveguide are used to perform terahertz time-domain spectroscopy of lactose powder dispersed on top of the wire. The THz pulses are generated by a photoconductive switch at one end of the metal wire and are detected at the other end by electro-optic sampling in a ZnTe crystal that can be moved parallel
Walther, Markus, Freeman, Mark R., Hegmann, Frank A.   +2 more
openaire   +3 more sources

Hydration Shells of DPPC Liposomes from the Point of View of Terahertz Time-Domain Spectroscopy

Applied Spectroscopy, 2020
Analysis of structural and dynamic properties of water in suspensions of liposomes composed from 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) in three phase states (gel, rippled gel, liquid crystalline phase) by means of terahertz time-domain ...
N. Penkov, V. Yashin, K. Belosludtsev
semanticscholar   +1 more source

Terahertz Hyper-Raman Time-Domain Spectroscopy

ACS Photonics, 2019
A new spectroscopic method has been demonstrated on the benchmark crystal α-SiO2. The new technique makes use of femtosecond optical pulses and intense, sub-ps, broadband terahertz (THz) pulses to ...
Rubano A., Mou S., Marrucci L., Paparo D.   +3 more
openaire   +3 more sources

Pressure-dependent terahertz time-domain spectroscopy

2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2016
We implemented pressure-dependent terahertz time-domain spectroscopy. Compared with traditional far-IR spectroscopy with a diamond anvil cell, we can measure at much lower frequencies, down to 0.1 THz, giving us access to many interesting dynamics. The pressure tuning range is from room pressure to 5 kpsi, while the temperature tuning range is from 77 ...
W. Zhang, D. V. Nickel, D. M. Mittleman
openaire   +1 more source

Terahertz time-domain spectroscopy of two-dimensional plasmons in AlGaN/GaN heterostructures

, 2020
Two-dimensional plasmons were investigated by terahertz time domain spectroscopy observing experimentally the distinctive minima and inflection points in the transmission power amplitude and phase spectra, respectively. Gratings of different periods (600,
D. Pashnev, T. Kaplas, V. Korotyeyev, V. Janonis, A. Urbanowicz, J. Jorudas, I. Kašalynas   +6 more
semanticscholar   +1 more source