Results 1 to 10 of about 3,740 (211)

Progress in application of terahertz time-domain spectroscopy for pharmaceutical analyses [PDF]

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Terahertz time-domain spectroscopy is an analytical method using terahertz time-domain pulses to study the physical and chemical properties of substances.
Shuteng Huang   +3 more
doaj   +4 more sources

Terahertz time-domain spectroscopy of edible oils [PDF]

open access: yesRoyal Society Open Science, 2017
Chemical degradation of edible oils has been studied using conventional spectroscopic methods spanning the spectrum from ultraviolet to mid-IR. However, the possibility of morphological changes of oil molecules that can be detected at terahertz ...
Alex Dinovitser   +2 more
doaj   +5 more sources

Integrated transmission-reflection strong-field terahertz time-domain spectroscopy [PDF]

open access: yesiScience
Summary: Strong-field terahertz time-domain spectroscopy (THz-TDS) is an effective tool for material testing, non-destructive testing, and modulation device measurement.
Jianghao Li   +10 more
doaj   +2 more sources

Detection of Microplastic in Salts Using Terahertz Time-Domain Spectroscopy [PDF]

open access: yesSensors, 2021
We report on a prototypical study of the detection of microplastic embedded in table salts by using terahertz time-domain spectroscopy. In the experiment, high-density polyethylene (HDPE) of sizes from 150 to 400 μm are used as a representative ...
Jaeseung Im   +5 more
doaj   +2 more sources

Terahertz quasi time domain spectroscopy

open access: yesOptics Express, 2009
It is shown theoretically and experimentally that for the specific case of an equidistant frequency spacing of semiconductor laser modes, signals similar to terahertz (THz) time domain spectroscopy (TDS) can be detected in a standard photomixer setup.
Maik Scheller, Martin Koch
exaly   +3 more sources

Wideband Beam Steering Concept for Terahertz Time-Domain Spectroscopy: Theoretical Considerations [PDF]

open access: yesSensors, 2020
Photonic true time delay beam steering on the transmitter side of terahertz time-domain spectroscopy (THz TDS) systems requires many wideband variable optical delay elements and an array of coherently driven emitters operating over a huge bandwidth.
Xuan Liu   +4 more
doaj   +2 more sources

Terahertz time-domain spectroscopy and imaging of artificial RNA

open access: yesOptics Express, 2005
We use terahertz time-domain spectroscopy (THz-TDS) to measure the far-infrared dielectric function of two artificial RNA single strands, composed of polyadenylic acid (poly-A) and polycytidylic acid (poly-C). We find a significant difference in the absorption between the two types of RNA strands, and we show that we can use this difference to record ...
Matthias C Hoffmann   +2 more
exaly   +4 more sources

Terahertz Time-Domain Spectroscopy [PDF]

open access: yesScientific Video Protocols, 2020
Time-Domain terahertz spectroscopy (THz TDS) has attracted attention from many scientific disciplines as it enables accessing the gap between electronic and optical techniques. One application is to probe spintronic dynamics in sub-picosecond time scale. Here, we discuss principles and technical aspects of a typical THz TDS setup.
Chiara Ciccarelli   +6 more
openaire   +2 more sources

Terahertz Time-Domain Spectroscopy of Human Blood [PDF]

open access: yesIEEE Journal of Biomedical and Health Informatics, 2013
In the continuing development of terahertz technology to enable the determination of tissue pathologies in real-time during surgical procedures, it is important to distinguish the measured terahertz signal from biomaterials and fluids, such as blood, which may mask the signal from tissues of interest.
Caroline B. Reid   +3 more
openaire   +3 more sources

An introduction to terahertz time-domain spectroscopic ellipsometry

open access: yesAPL Photonics, 2022
In the past, terahertz spectroscopy has mainly been performed based on terahertz time-domain spectroscopy systems in a transmission or a window/prism-supported reflection configuration.
X. Chen, E. Pickwell-MacPherson
doaj   +1 more source

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