Results 41 to 50 of about 42,760 (220)

Terahertz radiation affects the dynamics of neurons by decreasing membrane area ratio

Brain Research Bulletin
Terahertz radiation at specific frequencies and energies can mediate cellular morphology or function changes by exciting nonlinear resonance effects in proteins or DNA.
Shaoqing Ma, Siyu Li, Huan Wang, Yingwei Li, Chengbiao Lu, Xiaoli Li   +5 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

Terahertz active spatial filtering through optically tunable hyperbolic metamaterials

, 2012
We theoretically consider infrared-driven hyperbolic metamaterials able to spatially filtering terahertz radiation. The metamaterial is a slab made of alternating semiconductor and dielectric layers whose homogenized uniaxial response, at terahertz ...
Alekseyev, Alessandro Ciattoni, Carlo Rizza, Chan, Chen, Ciattoni, Driscoll, Elisa Spinozzi, Elser, Jacob, Lorenzo Columbo, Padilla, Schurig, Shen, Smith, Spinozzi   +15 more
core   +1 more source

Enhancement of Terahertz radiation due to excitation of SPW on graphene strip coated on GaAs structure

Results in Optics, 2023
The present study proposes a methodology for improving terahertz (THz) radiation through the utilisation of a laser directed towards a graphene strip that has been coated onto a GaAs structure.
Sandeep, Hitendra K. Malik
doaj   +1 more source

Terahertz pulse radiation from argon clusters

Optics Express, 2009
The characteristics of THz pulse radiation from argon clusters irradiated with intense femtosecond laser pulses have been investigated. The average power of the THz pulses radiated from argon clusters is approximately 40 times greater than that from argon gas.
Takeshi, Nagashima, Heijiro, Hirayama, Kyoji, Shibuya, Masanori, Hangyo, Masaki, Hashida, Shigeki, Tokita, Shuji, Sakabe   +6 more
openaire   +2 more sources

Terahertz plasmonic laser radiating in an ultra-narrow beam

, 2016
Plasmonic lasers (spasers) generate coherent surface-plasmon-polaritons (SPPs) and could be realized at subwavelength dimensions in metallic cavities for applications in nanoscale optics. Plasmonic cavities are also utilized for terahertz quantum-cascade
Khanal, Sudeep, Kumar, Sushil, Reno, John L., Wu, Chongzhao   +3 more
core   +1 more source

Acoustic phase imaging with terahertz radiation

Optics Express, 2007
We report on acoustic phase imaging of objects using terahertz radiation. The sensitivity of the technique is sufficient to detect objects at oscillation amplitudes down to about 300 nm. Such acoustic amplitudes are comparable to the human physiological perception level, which offers novel opportunities in security imaging.
Federico, Buersgens, Guillermo, Acuna, Roland, Kersting   +2 more
openaire   +2 more sources

Using 0.1 THz Radiation Regulates Collagen Synthesis Through TGF-β/Smad Signaling Pathway in Human Fetal Scleral Fibroblasts

Cells
Scleral tissue is a connective tissue made up of dense, intertwined collagen fibers that plays a vital part in preserving both the integrity of vision and the shape of the eyeball. Numerous studies have been conducted on the impact of terahertz radiation
Wenxia Wang, Liu Sun, Lei Wang, Jinwu Zhao, Shuocheng She, Pandeng Hou, Mingxia He   +6 more
doaj   +1 more source

The Impact of Structural Parameters of Split-Ring Resonators on the Terahertz Radiation Characteristics of Micro-Structured Photoconductive Antennas: A Simulation Study

IEEE Photonics Journal, 2020
In this study, we have theoretically designed a micro-structured photoconductive antenna based on the combination of split-ring resonator (SRR) and dipole photoconductive antenna.
Hu Deng, Zhonggang Xiong, Weiwei Qu, Zhixiang Wu, Quancheng Liu, Linyu Chen, Jin Guo, Liping Shang   +7 more
doaj   +1 more source

Research Progress of Terahertz Wave Radiation Source

Guangtongxin yanjiu, 2021
Terahertz band in electromagnetic spectrum has many properties than traditional light source, which has very important research value in biology, material, security, communication and other fields.
Ge WANG, Ming-deng SHI, Qing-hua HAN, Hong-bing MENG, De-bin ZENG   +4 more
doaj   +1 more source