Results 101 to 110 of about 621,889 (298)

High‐Pressure Modulation of Breathing Kagome Lattice: Cascade of Lifshitz Transitions and Evolution of the Electronic Structure

Advanced Science, EarlyView.
External pressure directly tunes the breathing distortion of the kagome lattice in Fe3Sn2, suppressing it near 15 GPa and reversing it at higher pressures. This structural modulation drives a cascade of Lifshitz transitions, reconstructs the Fermi surface, strengthens electronic correlations and carrier localization, and modifies ultrafast electron ...
Marcos Vinicius Gonçalves‐Faria, Maxim Wenzel, Yuk Tai Chan, Olga Iakutkina, Francesco Capitani, Davide Comboni, Michael Hanfland, Qi Wang, Hechang Lei, Martin Dressel, Alexander A. Tsirlin, Alexej Pashkin, Stephan Winnerl, Manfred Helm, Ece Uykur   +14 more
wiley   +1 more source

The Microscopic Mechanisms of Nonlinear Rectification on Si-MOSFETs Terahertz Detector. [PDF]

Sensors (Basel), 2023
Wei Y, Yao C, Han L, Zhang L, Chen Z, Wang L, Lu W, Chen X.   +7 more
europepmc   +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  

Highly efficient Terahertz photoconductive switch at 1060nm excitation wavelength

, 2022
2 S.Broadband and sensitive Terahertz (THz) emitter and detector material is required to build cost-effective and mobile THz time-domain spectrometer systems (TDS).
Brahm, A., Göbel, T., Notni, G., Dietz, R.J.B., Schell, M., Tünnermann, A., Gerth, C.   +6 more
core   +1 more source

Advances in Se Wide‐Bandgap Photovoltaics and TexSe1‐x SWIR Photodiodes

Advanced Science, EarlyView.
In this review, fundamental properties and current challenges in Se photovoltaics (PVs) for tandem and indoor PVs and TexSe1‐x alloys for short wave infrared photodiodes are discussed. A case is made for the practicality of elemental chalcogenide optoelectronics, and a pathway toward resolving the key challenges in these respective technologies is ...
Adam D. Alfieri, Deep Jariwala
wiley   +1 more source

Single Nanowire Terahertz Detectors

CLEO: 2015, 2015
Photoconductive terahertz detectors based on single GaAs/AlGaAs nanowire were designed, fabricated and incorporated into the pulsed time-domain technique, showing a promise for nanowires in terahertz applications such as near-field terahertz sensors or on-chip terahertz micro-spectrometers.
Peng, Kun, Parkinson, Patrick, Fu, Lan, Gao, Qiang, Jiang, Nian, Guo, Yanan, Wang, Fan, Joyce, Hannah J, Boland, Jessica L., Jagadish, Chennupati, Johnston, Michael B, Tan, Hark Hoe   +11 more
openaire   +3 more sources

Terahertz Digital Holographic Imaging of Voids Within Visibly Opaque Dielectrics

, 2014
Terahertz digital off-axis holography (THzDH) has been demonstrated as a non-destructive tool for imaging voids within visually opaque dielectrics. Using a raster scanning heterodyne detector, the imager captures lensless transmission holograms formed by
Ng, WR, Heimbeck, MS, Gehm, ME, Everitt, HO, Golish, DR   +4 more
core   +1 more source

Terahertz Pulse Shaping using Microwave-Photonic Delay Line Filters

, 2021
We propose an all-optical multi-band raised-cosine filter with tunable bandwidth for multi-channel IEEE 802.15.3d Standard-compliant terahertz communications using only a single-tap microwave photonic filter.Mohamed Shehata, Ke Wang, Withawat ...
Ke Wang, Shehata, M., Mohamed Shehata, Withawat Withayachumnankul, Wang, K., Withayachumnankul, W.   +5 more
core   +1 more source

Structural Changes and Transport Properties of YBa2Cu3O7 Locally Modified by a He+ Focused Ion Beam

Advanced Science, EarlyView.
The structure and the electric transport properties of YBa2Cu3O7 modified with 30 keV He+${\rm He}^{+}$ ions depend on the irradiation dose and lateral size of the irradiated area, as shown by low‐temperature resistivity measurements, diffraction with a nanofocused X‐ray beam and atomic force microscopy.
Ross Carter, Robin Hutt, Paul Zimmermann, Ainur Abukaev, Jan Ullmann, Simon Koch, Christoph Schmid, Manfred Burghammer, Reinhold Kleiner, Dieter Koelle, Edward Goldobin, Ivan A. Zaluzhnyy   +11 more
wiley   +1 more source

Research on Direct Detection Method and Performance of Single-photon Counting Terahertz Radar

Leida xuebao
The conventional terahertz radar suffers from limited operation range for long-distance, noncooperative target detection due to the low transmitter power and atmospheric attenuation effect, both of which pose a hindrance in meeting the requirements of ...
Kang LIU, Hongxuan WU, Jun YI, Hongqiang WANG, Chenggao LUO   +4 more
doaj   +1 more source