Results 101 to 110 of about 219,971 (340)

Single mode terahertz quantum cascade amplifier [PDF]

, 2014
A terahertz (THz) optical amplifier based on a 2.9 THz quantum cascade laser (QCL) structure has been demonstrated. By depositing an antireflective coating on the QCL facet, the laser mirror losses are enhanced to fully suppress the lasing action ...
Beere, H.E., Degl'Innocenti, R., Jessop, D.S., Kamboj, V., Klimont, A., Ren, Y., Ritchie, D.A., Shah, Y.D., Wallis, R.   +8 more
core   +3 more sources

Superionic Amorphous Li2ZrCl6 and Li2HfCl6

Advanced Materials, EarlyView.
Amorphous Li2HfCl6 and L2ZrCl6 are shown to be promising solid‐state electrolytes with predicted ionic conductivities >20 mS·cm−1. Molecular dynamics simulations with machine‐learning force fields reveal that anion vibrations and flexible MCl6 octahedra soften the Li coordination cage and enhance mobility. Correlation between Li‐ion diffusivity and the
Shukai Yao, De‐en Jiang
wiley   +1 more source

Low Power, Compact Integrated Photonic Sampler Based on a Silicon Ring Modulator

IEEE Photonics Journal, 2022
Sampling is the primary functional step of an analogue to digital conversion, required for sensing, measurement, signal processing, metrology, and various data communication applications. Here we present, for the first time, to the best of our knowledge,
Mohamed I. Hosni, Karanveer Singh, Sourav Dev, Arezoo Zarif, Stefan Preussler, Ayman M. Mokhtar, Kambiz Jamshidi, Thomas Schneider   +7 more
doaj   +1 more source

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

Advanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang, Jiaqi Zhang, Mei Cui, Wei Qi, Renliang Huang, Rongxin Su, Kai Zhang   +6 more
wiley   +1 more source

Quantum weak value amplified terahertz chiroptical measurement

Nanophotonics
A precise method for phase and amplitude detection in both the time and frequency domains of terahertz spectroscopy based on the weak-value amplification technique is proposed and demonstrated.
Xu Liping, Xu Jiangtao, Yao Xin, Zhang Rumin, Wen Gang, Wang Lei, Lu Xingxing, Li Zaoxia, Liu Wenquan, Wei Dongshan, Li Xiaoli, Chang Tianying, Cui Hong-Liang   +12 more
doaj   +1 more source

Angular Dependence of Copper Surface Damage Induced by an Intense Coherent THz Radiation Beam

Condensed Matter, 2020
In this work, we show the damage induced by an intense coherent terahertz (THz) beam on copper surfaces. The metallic surface was irradiated by multiple picosecond THz pulses generated by the Free Electron Laser (FEL) at the ISIR facility of the Osaka ...
Salvatore Macis, Luca Tomarchio, Silvia Tofani, S. Javad Rezvani, Luigi Faillace, Stefano Lupi, Akinori Irizawa, Augusto Marcelli   +7 more
doaj   +1 more source

THz Switching and THz Nonlinear Spectroscopy Applications

CHIMIA, 2011
Slits in thin metal sheets and split-ring resonators (SRR) featuring gaps on the micro- or nano-scale are shown to be a promising tool for THz switching or THz nonlinear spectroscopy applications. Both structures show strong field enhancement in the gap region due to light-induced current flows and capacitive charging across the gap.
Hannes Merbold, Fabian Brunner, Andrea Cannizzo, Thomas Feurer   +3 more
openaire   +3 more sources

Resistance to Overdoping Allows Over 2000 S cm−1 Conductivity in P(g3BTTT) With Anion‐Exchange Doping

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, Maximilian M. Horn, Eva Röck, Diego Rosas Villalva, Lize Bynens, Jochen Vanderspikken, Christina Kousseff, Silène Gobeil, Olivier Bardagot, Nesibe Akmanşen‐Kalayci, Sarah H. Tolbert, Iain McCulloch, Wouter Maes, Demetra Tsokkou, Natalie Banerji   +14 more
wiley   +1 more source

Decoding THz‐Driven Dynamic Fingerprints of Ferroelectric Nanotwin Networks

Advanced Materials, EarlyView.
ABSTRACT Ultrafast polarization dynamics in ferroelectrics are of considerable interest for high‐speed tunable dielectrics and electro‐optics. Extended domain wall networks formed in ferroelectric twin nanodomains can support collective dynamics in the terahertz regime but require techniques that track polarization and strain evolution driven by ...
Xiaojiang Li, Aiden Ross, Vladimir A. Stoica, Sujit Das, Sankalpa Hazra, Huaiyu (Hugo) Wang, Hari Padma, Matthias C. Hoffmann, Patrick Kramer, Sanghoon Song, Silke Nelson, Takahiro Sato, Diling Zhu, Ramamoorthy Ramesh, Lane W. Martin, Yue Cao, John W. Freeland, Aaron M. Lindenberg, Haidan Wen, Long‐Qing Chen, Venkatraman Gopalan   +20 more
wiley   +1 more source

Plasmonic terahertz detectors based on a high-electron mobility GaAs/AlGaAs heterostructure

, 2014
In order to characterize magnetic-field (B) tunable THz plasmonic detectors, spectroscopy experiments were carried out at liquid helium temperatures and high magnetic fields on devices fabricated on a high electron mobility GaAs/AlGaAs heterostructure ...
A. M. Witowski, Chaplik A. V., J. Wróbel, J. Łusakowski, M. Białek, M. Czapkiewicz, M. Grynberg, M. Orlita, M. Potemski, V. Umansky   +9 more
core   +3 more sources