Results 61 to 70 of about 275,542 (299)

Large Near-Field Enhancement in Terahertz Antennas by Using Hyperbolic Metamaterials with Hole Arrays

Applied Sciences, 2019
Terahertz antennas can greatly enhance the near fields and enable strong light−matter interactions, and thus have been widely used in applications such as terahertz sensing and detection. Here we propose a novel approach to further enhance the near
Cong Cheng, Wei Chen, Yuanfu Lu, Fangming Ruan, Guangyuan Li   +4 more
doaj   +1 more source

Arrays of Sub-Terahertz Cryogenic Metamaterial

Applied Sciences, 2021
Integrated quasi-optical cryogenic terahertz receivers contain arrays of detectors, quasi-optical filters, interferometers, and other metamaterials. Matrices of quasi-optical band-pass, low-pass, and high-pass filters, Fabry–Perot grid interferometers ...
Mikhail Tarasov, Aleksandra Gunbina, Artem Chekushkin, Vyacheslav Vdovin, Aleksei Kalaboukhov   +4 more
doaj   +1 more source

Modelling of reconfigurable terahertz integrated architecture (RETINA) SIW structures [PDF]

, 2010
23.04.13 KB. Published version ok to add to spiral. PIER emailThis paper discusses for the first time the combined optoelectronic-electromagnetic modelling of a new technology that represents a paradigm shift in the way millimetre-wave and terahertz ...
Stepan Lucyszyn, Lucyszyn, S, Yun Zhou, Zhou, Y   +3 more
core   +1 more source

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

The propagation of shock waves with THz frequency in field-effect transistors

AIP Advances, 2022
The investigation on propagation of shock waves with terahertz frequency in field-effect transistors has promoted the development of terahertz radiators and detectors.
Jiangxu Feng, Liping Zhang, Jiani Li, Jiangqiong Zheng   +3 more
doaj   +1 more source

Towards a compact THz local oscillator based on a quantum cascade laser [PDF]

, 2010
Heterodyne spectroscopy of molecular rotational lines and atomic fine-structure lines is a powerful tool in astronomy and planetary research. One example is the OI fine-structure line at 4.7 THz.
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  

Microelectromechanical Maltese-cross metamaterial with tunable terahertz anisotropy

, 2012
Dichroic polarizers and waveplates exploiting anisotropic materials have vast applications in displays and numerous optical components, such as filters, beamsplitters and isolators. Artificial anisotropic media were recently suggested for the realization
Zhu, W.M., Zhang, X.H., Bourouina, T., Kwong, D.L., Tsai, D.P., Liu, A.Q., Lo, G.Q., Zheludev, N.I., Teng, J.H.   +8 more
core   +1 more source

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

On-chip THz studies of low-dimensional semiconductor systems [PDF]

, 2013
A wide range of novel on-chip integration techniques were developed to explore the low-temperature perturbation of GaAs/AlGaAs based confined electron systems at terahertz frequencies.
Mistry, Divyang Kishore
core   +3 more sources

Far‐Infrared Hyperbolic Phonon–Polaritons in Zirconium Disulfide

Advanced Materials, EarlyView.
An unpatterned ZrS2${\rm ZrS}_2$ flake, coupled to far‐field infrared light by metal nanoribbons, reveals hyperbolic phonon polaritons with multiple higher‐order branches and effective refractive indices up to 223. This resonator‐assisted approach establishes ZrS2${\rm ZrS}_2$ as a compact van der Waals platform for deeply subwavelength far‐infrared ...
Subhodip Saha, Ryan Kowalski, Joseph R. Matson, Thomas G. Folland, Tony Low, Joshua D. Caldwell, In‐Ho Lee, Sang‐Hyun Oh   +7 more
wiley   +1 more source