Results 81 to 90 of about 5,043,066 (255)

Fast Terahertz Computed-Tomography Imaging With a Quantum-Cascade Laser and a Scanning Mirror [PDF]

, 2013
A terahertz transmission imaging system based on a quantum-cascade laser (QCL), a fast scanning mirror, and a sensitive Ge:Ga detector is demonstrated. In order to reduce artifacts, special care was taken on the optics and the conversion of the measured
H.-W. Hubers, H. Richter, Richter, Heiko, Schrottke, Lutz, Grahn, H. T., Hübers, Heinz-Wilhelm, Wienold, Martin, Rothbart, Nick, M. Wienold, L. Schrottke, H. T. Grahn, N. Rothbart   +11 more
core   +1 more source

Applications of terahertz spectroscopy in the plastics industry

, 2022
Paper 68400VThe worldwide production volume of polymers is still rising exponentially and the number of applications for plastic components steadily increases. Yet, many branches within the polymer industry are hardly supported by non-destructive testing
Wietzke, S., Vieweg, R., Rutz, Frank, Jansen, C., Koch, M., Wilk, R., Jördens, C., Krumbholz, N.   +7 more
core   +1 more source

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

Advanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su, Yanda Zhu, Hao Peng, Manman Li, Xuzihan Zhang, Meixiao Wu, Siyuan Zhang, Yuhan Zeng, Jiwen Liao, Ming Luo, Hetaishan Huang, Yutong Wang, Sean Li, Wenxian Li   +13 more
wiley   +1 more source

Dual wavelength Brillouin laser terahertz source stabilized to carbonyl sulfide rotational transition

Nature Communications
Optical-based terahertz sources are important for many burgeoning scientific and technological applications. Among such applications is precision spectroscopy of molecules, which exhibit rotational transitions at terahertz frequencies.
James Greenberg, Brendan M. Heffernan, William F. McGrew, Keisuke Nose, Antoine Rolland   +4 more
doaj   +1 more source

Recent Developments and Applications of Terahertz Spectroscopy in Food Analysis

Biosensors
The terahertz waves are electromagnetic waves with frequencies ranging from 0.1 to 10 THz, exhibiting characteristics of both microwave and infrared, including fingerprint characteristics, coherence, and safety.
Pengpeng Yu, Chaoping Shen, Wenhui Zhu, Wenya Zhang, Junhui Cheng, Jinxiu Song   +5 more
doaj   +1 more source

Performance of a compact, continuous-wave terahertz based on a quantum-cascade laser [PDF]

, 2010
We report on the development of a compact, easy-to-use terahertz radiation source, which combines a quantum cascade laser (QCL) with a compact, low-input-power Stirling ...
Richter, Heiko, Schrottke, Lutz, Grahn, H. T., Giehler, M., Wienold, Martin, Huebers, H.-W., Pavlov, Sergey, Greiner-Bär, Michael, Semenov, Alexei D., Hey, R.   +9 more
core  

Planar terahertz metamaterials for strain sensing

, 2012
Extent: 2p.We present two designs of planar terahertz metamaterials for strain sensing. A series of resonance frequency shifts are obtained with differing gap widths when the sensor is under mechanical compression.
Abbott, D., Shah, C., Sriram, S., Ung, B., Charan M. Shah, Madhu Bhaskaran, Withayachumnankul, W., Chang, S., Jining Li, Shengjiang Chang, Bhaskaran, M., Derek Abbott, Benjamin S. Y. Ung, Li, J., Sharath Sriram, Withawat Withayachumnankul   +15 more
core   +1 more source

Multi-layered Graphene Based Optically Tunable Terahertz Absorber [PDF]

, 2019
We present a broadband tunable terahertz (THz) absorber, which consists of cross-shaped multi-layered graphene (MLG) resonators. The proposed absorber possesses almost perfect absorption over the range 0.4—0.8 THz and can be easily fabricated.
Anna V. Baldycheva, Alexander N. Grebenchukov, Anton D. Zaitsev, Evgeniya O. Kovalska, Grebenchukov, Alexander N., Baldycheva, Anna V., Zaitsev, Anton D., Mikhail G. Novoselov, Mikhail K. Khodzitsky, Khodzitsky, Mikhail K., Novoselov, Mikhail G., Kovalska, Evgeniya O.   +11 more
core   +1 more source

Halide Perovskite: A Rich Source of Thermal Insulator

Advanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye, Bangzhi Ge, Yuan Yu, Chongjian Zhou   +3 more
wiley   +1 more source

Engineering Large‐Grain Metal Halide Perovskite Films via Chemical Vapor Deposition for High‐Performance, Ultralow‐Noise Perovskite Photodetectors

Advanced Science, EarlyView.
Chemical vapor deposition produces large‐grain, phase‐pure CsPbBr3 films (grains up to 35 µm) with Drude‐like terahertz photoconductivity and twofold higher carrier mobility versus spin‐coated references. These microstructural advances translate into photodetectors with a detectivity of 8.4 × 1012 Jones, dark current below 1 pA cm−2, X‐ray sensitivity ...
Roel Vanden Brande, Sudipta Seth, Lei Gao, Bapi Pradhan, Dilkhush Khicher, Anastasiia Bazylevska, Wei Qu, Christian Sternemann, Hai Wang, Steven De Feyter, Weidong Xu, Fei Zhang, Mischa Bonn, Johan Hofkens, Elke Debroye   +14 more
wiley   +1 more source