Results 51 to 60 of about 17,587,514 (208)
Spatial Domain Terahertz Image Reconstruction Based on Dual Sparsity Constraints
Sensors, 2021 Terahertz time domain spectroscopy imaging systems suffer from the problems of long image acquisition time and massive data processing. Reducing the sampling rate will lead to the degradation of the imaging reconstruction quality.
Xiaozhen Ren, Yuying Jiang
doaj +1 more source
SLD-driven terahertz cross-correlation spectroscopy
, 2022 S.321-322Terahertz cross-correlation spectroscopy is a fascinating method to generate signals comparable to those of conventional time-domain spectroscopy but using continuous light.
Molter, Daniel +2 more
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Terahertz Time-Domain Spectroscopy: From Proteins To Nanostructures [PDF]
, 2009 This dissertation presents the Terahertz spectroscopy of several systems ranging from proteins to nanostructures. First, Terahertz Time-Domain Spectroscopy is introduced as a unique and powerful technique for studying physical processes that occur at ...
George, Paul
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Unlocking Terahertz Steganography: Authentication of Hidden Images in Flexible Media
Advanced Materials Technologies, EarlyView.Hidden information in multilayered devices, such as steganographic portraits, is detected and authenticated using reflection‐mode terahertz time‐domain imaging. Image reconstruction relies on a dedicated figure‐of‐merit obtained by integrating the signal intensity over the time‐window associated with the reflection from the metallic mirror backing the ...
Tiziana Ritacco +4 more
wiley +1 more source
Photonic Stepped-Frequency Intensity Modulated Comb Terahertz Radar
IEEE Journal of MicrowavesThis work presents an ultra-high repetition rate (UHRR) terahertz time-domain spectroscopy (THz-TDS) system with a unique capability – it functions as a close-range pulsed radar with micrometer precision and an unambiguous range (UR) of about 3 mm.
Vladyslav Cherniak +2 more
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Broadband Terahertz Spectroscopy of Phonon-Polariton Dispersion in Ferroelectrics
Photonics, 2018 Electromagnetic waves at frequencies below the X-ray region strongly couple to the optical vibrational modes in a solid. These coupled excitations have been called phonon polaritons.
Seiji Kojima
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Advanced Materials Technologies, EarlyView.A THz metasurface device integrating a metal–dielectric–metal resonator with microwall‐defined recessed regions enables spatially guided, label‐free sensing of micrometer‐scale plastic particles. The as‐fabricated devices exhibit distinct THz reflection resonances for 3.1‐µm polystyrene particles and a concentration‐dependent resonance‐frequency‐shift ...
Naoki Inomata +2 more
wiley +1 more source
Research on identification method of bituminous coal based on terahertz time-domain spectroscopy
Frontiers in Earth ScienceThe traditional coal type identification method needs to measure a variety of parameters of coal samples to obtain more accurate results, and the detection process is time-consuming and laborious, and can not realize the rapid identification of coal ...
Shuguang Miao +9 more
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A lettuce moisture detection method based on terahertz time-domain spectroscopy
Ciência Rural, 2021 : For non-destructive detection of water stress in lettuce, terahertz time-domain spectroscopy (THz-TDS) was used to quantitatively analyze water content in lettuce. Four gradient lettuce water contents were used . Spectral data of lettuce were collected
Xiaodong Zhang +4 more
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Molecular spectroscopy with a multimode THz quantum-cascade laser [PDF]
, 2011 A terahertz absorption spectrometer for highresolution molecular spectroscopy is realized. The spectrometer is based on a multimode quantum-cascade laser. The design and performance of the spectrometer are presented.
A. D. Semenov +19 more
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