Results 41 to 50 of about 3,858 (229)
Gastrointestinal cancer diagnostics by terahertz time domain spectroscopy [PDF]
2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA), 2017 Samples of fresh excised tissues obtained from patients who had undergone gastric cancer have been investigated. Samples consisted of cancer zone, normal zone and pathologically changed zone. Their optical properties and spectral features were investigated by terahertz time-domain spectroscopy (THz-TDS) in reflection mode.
Anna A. Goryachuk +4 more
openaire +2 more sources
High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks
Advanced Materials, EarlyView.A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza +11 more
wiley +1 more source
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
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Advanced Materials, EarlyView.We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti +12 more
wiley +1 more source
Terahertz Wave Approach and Application on FRP Composites
Advances in Materials Science and Engineering, 2013 Terahertz (THz) applications have emerged as one of the most new powerful nondestructive evaluation (NDE) techniques. A new T-ray time-domain spectroscopy system was utilized for detecting and evaluating orientation influence in carbon fiber-reinforced ...
Kwang-Hee Im +5 more
doaj +1 more source
ChemPhysMater, 2022 In this study, Spoilage of salmon was investigated using electrochemical impedance spectroscopy (EIS) and terahertz time-domain spectroscopy (TDS). Salmon tissues were continuously observed for more than 20 h, from fresh to full spoilage.
Nan Zhang +5 more
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Advanced Materials, EarlyView.ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee +6 more
wiley +1 more source
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, EarlyView.Anion‐exchange doping of conjugated polymers is an effective way to achieve high conductivities. Here, we report over 2000 S cm−1 electrical conductivity for doped P(g3BTTT). In addition, we show that P(g3BTTT) sustains exceptionally high doping levels without any drop in the charge mobility.
Basil Hunger +14 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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