Results 31 to 40 of about 65,222 (316)

A Terahertz Molecular Switch [PDF]

open access: yesPhysical Review Letters, 2003
4 pages, 5 figures. To appear in Phys.
Orellana P, Claro Huneeus, Francisco
openaire   +8 more sources

Multi-resonant tunable absorber of terahertz metamaterial based on GaAs and VO2

open access: yesResults in Physics, 2023
Based on the fact that the conductivity of photosensitive semiconductors can be regulated by external pump light, a metamaterial absorber with single-band and dual-band switchable in terahertz region is designed by replacing gallium arsenide (GaAs ...
Tingting Yuan   +4 more
doaj   +1 more source

Near-Field Analysis of Terahertz Pulse Generation From Photo-Excited Charge Density Gradients [PDF]

open access: yes, 2015
Excitation of photo-current transients at semiconductor surfaces by subpicosecond optical pulses gives rise to emission of electromagnetic pulses of terahertz (THz) frequency radiation.
Natrella, M   +12 more
core   +1 more source

Frequency selective fingerprint sensor: the Terahertz unity platform for broadband chiral enantiomers multiplexed signals and narrowband molecular AIT enhancement

open access: yesPhotoniX, 2023
Chiral enantiomers have different pharmacological and pharmacokinetic characteristics. It is important to strictly detect chiral component for avoiding being harmful to the human body due to side effects.
Jiaming Lyu   +4 more
doaj   +1 more source

Terahertz Nanofocusing with Cantilevered Terahertz-Resonant Antenna Tips [PDF]

open access: yesNano Letters, 2017
We developed THz-resonant scanning probe tips, yielding strongly enhanced and nanoscale confined THz near fields at their tip apex. The tips with length in the order of the THz wavelength (λ = 96.5 μm) were fabricated by focused ion beam (FIB) machining and attached to standard atomic force microscopy (AFM) cantilevers.
Stefan Mastel   +9 more
openaire   +3 more sources

An ultra-broadband terahertz absorber at high terahertz frequency

open access: yesOptical and Quantum Electronics, 2022
Abstract Broadband absorber at high terahertz frequency is highly required for applications in imaging, detecting, electromagnetic stealth. Although intensive investigations of the broadband absorber have been taken, the challenges still exist both in design and fabrication of an ultra-broadband absorber at high frequency.
Tong Li   +4 more
openaire   +1 more source

Design of 2D TeraHertz band-gap photonic waveguides using an accelerated integral equation technique [PDF]

open access: yes, 2009
This paper describes the application of the buffered block forward backward (BBFB) method to the problem of modeling 2D terahertz (THz) photonic band gap waveguides at the frequency of 3 THz.
D. Bogusevschi   +7 more
core   +1 more source

Accurate determination of terahertz optical constants by vector network analyzer of Fabry-Perot response [PDF]

open access: yes, 2013
This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.38.005438.
Wang, X   +4 more
core   +1 more source

Lipids monitoring in Scenedesmus obliquus based on terahertz technology

open access: yesBiotechnology for Biofuels, 2020
Background Microalgae are considered as a source of low pollution and renewable fuel due to their ability to synthesize an abundance of lipids.
Yongni Shao   +6 more
doaj   +1 more source

Application of terahertz spectroscopy to the characterization of biological samples using birefringence silicon grating [PDF]

open access: yes, 2012
We present a device and method for performing vector transmission spectroscopy on biological specimens at terahertz (THz) frequencies. The device consists of artificial dielectric birefringence obtained from silicon microfluidic grating structures. The
Saha, S.C.   +3 more
core   +1 more source

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