Articles with "terahertz time" as a keyword



Optical Properties and Crystallization of Natural Waxes at Several Annealing Temperatures: a Terahertz Time-Domain Spectroscopy Study

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Published in 2018 at "Journal of Infrared, Millimeter, and Terahertz Waves"

DOI: 10.1007/s10762-017-0461-3

Abstract: The thermal analysis and optical properties of paraffin wax, beeswax, and liquid paraffin annealed at variable temperatures have been conducted using terahertz time-domain spectroscopy (THz-TDS) coupled with SEM methods. The characteristic optical properties of natural… read more here.

Keywords: paraffin wax; optical properties; time domain; terahertz time ... See more keywords
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Elucidation of elemental and structural changes in high-volatile bituminous coal during thermal treatment by X-ray diffraction and terahertz time-domain spectroscopy

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Published in 2021 at "Fuel"

DOI: 10.1016/j.fuel.2021.120410

Abstract: Abstract Research on the chemical composition and structure of coal is fundamental for understanding chemical reactivity in combustion, pyrolysis, and gasification processes. In this work, X-ray diffraction (XRD) and terahertz time-domain spectroscopy (THz-TDS) are used… read more here.

Keywords: ray diffraction; terahertz time; spectroscopy; time domain ... See more keywords

Quantitative analysis of alum based on Terahertz time-domain spectroscopy technology and Support vector machine

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Published in 2019 at "Optik"

DOI: 10.1016/j.ijleo.2019.163017

Abstract: Abstract In this paper, the Terahertz time-domain spectroscopy (THz-TDS) technique was used to quantitatively analyze the alum proportion in sweet potato starch. Terahertz time-domain spectra and frequency-domain spectra of pure sweet potato starch and pure… read more here.

Keywords: terahertz time; spectroscopy; time domain; sweet potato ... See more keywords
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Comparison of terahertz time-domain spectroscopy based on photoconductive antenna and electro-optic sampling and the optical parameter measurement of GaSe nanofilm in THz band

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Published in 2021 at "Optik"

DOI: 10.1016/j.ijleo.2021.166822

Abstract: Abstract Due to the advantages of THz wave in nondestructive examination (NDE) of materials, terahertz time-domain spectrometer (THz-TDS) has become a mature device for THz detection. Thus, improving signal-to-noise ratio (SNR) and reliability of THz-TDS… read more here.

Keywords: thz; terahertz time; photoconductive antenna; thz tds ... See more keywords

Development and characterization of cyclic olefin copolymer thin films and their dielectric characteristics as CPW substrate by means of Terahertz Time Domain Spectroscopy

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Published in 2018 at "Microelectronic Engineering"

DOI: 10.1016/j.mee.2018.01.036

Abstract: Abstract We describe recent advances in the fabrication of cyclic olefin copolymer (COC) thin films and their electrical characteristics between 0.3 and 2 THz (terahertz). COC films were fabricated by dissolving the raw material in toluene… read more here.

Keywords: olefin copolymer; thin films; terahertz time; cyclic olefin ... See more keywords
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Fingerprint characterization of M-EDTA complexes and iron compounds using terahertz time-domain spectroscopy

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Published in 2020 at "Journal of Molecular Structure"

DOI: 10.1016/j.molstruc.2019.127515

Abstract: Abstract Terahertz time-domain spectroscopy (THz-TDS) provides a novel approach for the coordination compounds characterization. In this paper, the THz absorption spectra of iron complexes and M-EDTA (M = Cd2+, Cu2+, Ni2+, Co2+, Fe2+, Fe3+, Mn2+, Cr3+) complexes… read more here.

Keywords: edta complexes; time domain; terahertz time; spectroscopy ... See more keywords

Quantifying crystalline α-lactose monohydrate in amorphous lactose using terahertz time domain spectroscopy and near infrared spectroscopy

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Published in 2019 at "Vibrational Spectroscopy"

DOI: 10.1016/j.vibspec.2019.03.004

Abstract: Abstract Spray-dried lactose consists of an amorphous component (10–20%) as well as the crystalline monohydrate form [ 1 ]. It is commonly used as a diluent in direct compression, mainly because of its better flow… read more here.

Keywords: terahertz time; near infrared; spectroscopy; time domain ... See more keywords

Study on Rapid Quantitative Detection of Soil MPs Based on Terahertz Time-Domain Spectroscopy.

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Published in 2025 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.4c05736

Abstract: The presence of microplastics (MPs) in agricultural soils substantially affects the growth, reproduction, feeding, survival, and immunity levels of soil biota. Therefore, it is crucial to investigate fast, effective, and accurate techniques for the detection… read more here.

Keywords: detection; spectroscopy; soil mps; detection soil ... See more keywords

Measurement of Water Uptake and States in Nafion Membranes Using Humidity-Controlled Terahertz Time-Domain Spectroscopy

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Published in 2024 at "ACS Sustainable Chemistry & Engineering"

DOI: 10.1021/acssuschemeng.4c01820

Abstract: Perfluorinated sulfonic acid ionomers are well known for their unique water uptake properties and chemical/mechanical stability. Understanding their performance–stability trade-offs is key to realizing membranes with optimal properties. Terahertz time-domain spectroscopy has been demonstrated to… read more here.

Keywords: spectroscopy; water; domain spectroscopy; time domain ... See more keywords

Contactless graphene conductivity mapping on a wide range of substrates with terahertz time-domain reflection spectroscopy

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-09809-7

Abstract: We demonstrate how terahertz time-domain spectroscopy (THz-TDS) operating in reflection geometry can be used for quantitative conductivity mapping of large area chemical vapour deposited graphene films on sapphire, silicon dioxide/silicon and germanium. We validate the… read more here.

Keywords: time domain; terahertz time; geometry; conductivity ... See more keywords
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Anisotropic complex refractive index of β-Ga2O3 bulk and epilayer evaluated by terahertz time-domain spectroscopy

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Published in 2021 at "Applied Physics Letters"

DOI: 10.1063/5.0031531

Abstract: Homoepitaxial film and semi-insulating bulk β-Ga2O3 with (001) orientation were studied using terahertz time-domain spectroscopy (THz-TDS) in the frequency region from 0.2 to 3.0 THz parallel to the [100] and [010] directions. The static permittivity of… read more here.

Keywords: ga2o3; time domain; terahertz time; spectroscopy ... See more keywords