Results 31 to 40 of about 17,587,514 (208)

Frequency Range Optimization for Continuous Wave Terahertz Imaging

Applied Sciences, 2023
With shorter wavelengths than microwaves and greater penetration depth than infrared light, waves in the terahertz spectrum offer unique material testing opportunities.
Blaž Pongrac, Andrej Sarjaš, Dušan Gleich   +2 more
doaj   +1 more source

Four-channel terahertz time-domain spectroscopy system for industrial pipe inspection

, 2022
2 S.The measurement of layer thicknesses is one of the most promising fields of applications of terahertz measurement systems [1, 2]. Besides the investigation of coatings in the automotive or aeronautic industry, the inline inspection of wall thickness ...
Molter, Daniel, Gundacker, Dominic, Freymann, Georg von, Jonuscheit, Joachim, Zwetow, Wladimir, Kharik, Dmytro, Weber, Stefan, Ellrich, Frank, Klier, Jens   +8 more
core   +1 more source

Insights into a Mineral Resource Chlorite Mica Carbonate Schist by Terahertz Spectroscopy Technology

Energies, 2022
Nowadays, the mineral resources formed by geological processes have been effectively utilized with the boom exploration of novel technologies. Traditional analytical methods, such as X-ray Fluorescence, X-ray diffraction, and Scanning electron microscopy,
Meihui Yang, Siqi Zhang, Haochong Huang, Yuanyuan Ma, Sibo Hao, Zili Zhang, Zhiyuan Zheng   +6 more
doaj   +1 more source

Influence of bandwidth and dynamic range on thickness determination using terahertz time-domain spectroscopy

, 2022
S.202-203Terahertz time-domain spectroscopy (TDS) is a very attractive technique in the field of nondestructive layer-thickness determination. The characteristics of the generated terahertz pulses - bandwidth and dynamic range - have direct influence on ...
Pfeiffer, T., Klier, J., Liebelt, L., Freymann, G. von, Molter, D., Ellrich, F., Weber, S.   +6 more
core   +1 more source

Time-Domain Terahertz Spectroscopy in High Magnetic Fields

, 2020
There are a variety of elementary and collective terahertz-frequency excitations in condensed matter whose magnetic field dependence contains significant insight into the states and dynamics of the electrons involved.
Andrey Baydin (10667172), Junichiro Kono (1455088), Nicolas Marquez Peraca (14856118), Takuma Makihara (10667178)   +3 more
core   +1 more source

Characterization of Wheat Varieties Using Terahertz Time-Domain Spectroscopy

Sensors, 2015
Terahertz (THz) spectroscopy and multivariate data analysis were explored to discriminate eight wheat varieties. The absorption spectra were measured using THz time-domain spectroscopy from 0.2 to 2.0 THz.
Hongyi Ge, Yuying Jiang, Feiyu Lian, Yuan Zhang, Shanhong Xia   +4 more
doaj   +1 more source

Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology

IEEE Access, 2020
The optical properties of polymers and glasses useful for terahertz applications are experimentally characterized using terahertz time-domain spectroscopy (THz-TDS). A standard system setup utilizing transmission spectroscopy is used to measure different
Md Saiful Islam, Cristiano M. B. Cordeiro, Md J. Nine, Jakeya Sultana, Alice L. S. Cruz, Alex Dinovitser, Brian Wai-Him Ng, Heike Ebendorff-Heidepriem, Dusan Losic, Derek Abbott   +9 more
doaj   +1 more source

High-Contrast Imaging of Graphene via Time-Domain Terahertz Spectroscopy [PDF]

We demonstrate terahertz (THz) imaging and spectroscopy of single-layer graphene deposited on an intrinsic Si substrate using THz time-domain spectroscopy.
van der Zande, A. M., Barton, R. A., Choi, H., Paul, M. J., Jameson, A. D., Minot, E. D., McEuen, P. L., Kevek, J. W., Lee, Yun-Shik, Tomaino, J. L.   +9 more
core   +3 more sources

Quantitative Determination of Sucrose Adulterated in Red Ginseng by Terahertz Time-Domain Spectroscopy (THz-TDS) with Monte Carlo Uninformative Variable Elimination (MCUVE) and Support Vector Regression (SVR)

Journal of Spectroscopy, 2022
This paper introduces a method to detect the content of sucrose, an adulterant of red ginseng, based on terahertz spectroscopy. Experiments were carried out on red ginseng with 6 levels of adulterated concentrations using terahertz time-domain ...
Shubao Pan, Huo Zhang, Zhi Li, Tao Chen, Xianhua Yin   +4 more
doaj   +1 more source

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source