Results 61 to 70 of about 54,131 (291)

Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes

Advanced Functional Materials, EarlyView.
This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin, Wenhao Wang, Thomas Caiwei Tan, Abhishek Kumar, Ridong Jia, Nikhil Navaratna, Ranjan Singh, Lijuan Xie   +7 more
wiley   +1 more source

Generation of spatiotemporally tailored terahertz wavepackets by nonlinear metasurfaces

Nature Communications, 2019
While the terahertz range has become increasingly important for a wide range of applications, efficient sources with bespoke output characteristics are still lacking. Here, Keren-Zur et al.
Shay Keren-Zur, Mai Tal, Sharly Fleischer, Daniel M. Mittleman, Tal Ellenbogen   +4 more
doaj   +1 more source

Reconfigurable nonlinear photonic devices based on nanostructured graphene (review)

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
The relevance of the study is due to the need to mastering the terahertz (THz) range to increase the volume of transmitted information and is dictated by the needs of the developing technology of THz frequencies in the development of electronically ...
Galina S. Makeeva
doaj   +1 more source

RESONATOR METHOD FOR DETERMINATION OF LOSSES IN ONE-DIMENSIONAL METAL GRATINGS IN TERAHERTZ RANGE [PDF]

Радиофизика и электроника, 2018
Subject and purpose. The terahertz frequency range currently attracts much attention due to the wide possibilities of its application for solving a number of problems in science, technology, and medicine.
M. I. Dzyubenko, Y. E. Kamenev, V. P. Radionov, Z. Y. Litvina   +3 more
doaj   +1 more source

Properties of InxGa1−xN films in terahertz range

Applied Physics Letters, 2012
In this letter, we report the characterization of the refractive indices and complex conductivities of a set of GaN films with different carrier concentrations, InN film, and InxGa1−xN films with indium content varying from x = 0.07 to x = 0.14 grown by metalorganic chemical vapor deposition for frequencies ranging from 0.3 to 3 THz using terahertz ...
Gauthier-Brun, A., Teng, J.H., Dogheche, El Hadj, Liu, W., Gokarna, A., Tonouchi, M., Chua, S.J., Decoster, Didier   +7 more
openaire   +2 more sources

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

Advanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To, Jiachen Du, Cyril Decroze, Laure Huitema, Aurelian Crunteanu, Hang Wong   +5 more
wiley   +1 more source

TUNABLE AND BROADBAND DIFFERENTIAL PHASE SECTIONS IN TERAHERTZ FREQUENCY RANGE [PDF]

Radio Physics and Radio Astronomy, 2016
Purpose: Studying the quasioptical tunable and broadband differential phase section (DPS) consisting of several birefringent elements (BE) on the basis of form birefringence effect. Design/methodology/approach: Using the polarization scattering matrix
O. S. Kosiak, V. I. Bezborodov, Ye. M. Kuleshov, P. K. Nesterov   +3 more
doaj   +1 more source

Optimization of photomixers and antennas for continuous-wave terahertz emission [PDF]

, 2005
We have studied terahertz emission from interdigitated finger photomixers coupled to planar antenna structures. Using both pulsed and continuous-wave excitation, polarization measurements reveal that the antenna design dominates the properties of the
Baker, C., Bradley, I.V., Davies, A.G., Evans, M.J., Gregory, I.S., Linfield, E.H., Missous, M., Tribe, W.R.   +7 more
core   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

Changes in immunological parameters of polytrauma patients with use of terahertz electromagnetic waves in complex treatment

Гений oртопедии, 2023
Introduction Improving the results of treatment and rehabilitation is essential for polytrauma patients. The aim of the study was to prove the effectiveness of terahertz electromagnetic waves (TEW) in polytrauma patients early after traumatic event to ...
Yuri P. Soldatov, Maksim V. Stogov, Semen V. Shen, Yakov B. Beikin, Evgeny N. Ovchinnikov, Stanislav Yu. Lukin, Natalya V. Tushina   +6 more
doaj   +1 more source