Results 41 to 50 of about 44,433 (290)

Spectral characterization and vibrational mode study of cocrystal of acetaminophen and aspirin based on terahertz/Raman spectroscopy combined with DFT theory calculation

open access: yesResults in Chemistry
In recent years, pharmaceutical cocrystal has become a hot field in drug development, which improves the solubility, stability, and bioavailability of drugs.
Haofei Sun   +7 more
doaj   +1 more source

Machine Learning Techniques for THz Imaging and Time-Domain Spectroscopy

open access: yesSensors, 2021
Terahertz imaging and time-domain spectroscopy have been widely used to characterize the properties of test samples in various biomedical and engineering fields.
Hochong Park, Joo-Hiuk Son
doaj   +1 more source

Terahertz time-domain spectroscopy of edible oils. [PDF]

open access: yes, 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 ...
Abbott, Derek   +2 more
core   +2 more sources

Non-destructive comparative evaluation of fossil amber using terahertz time-domain spectroscopy.

open access: yesPLoS ONE, 2022
Fossilized plant resins, or ambers, offer a unique paleontological window into the history of life. A natural polymer, amber can preserve aspects of ancient environments, including whole organisms, for tens or even hundreds of millions of years.
Phillip Barden   +8 more
doaj   +1 more source

Fermi volume evolution and crystal field excitations in heavy-fermion compounds probed by time-domain terahertz spectroscopy

open access: yes, 2019
We measure the quasiparticle weight in the heavy-fermion compound CeCu$_{6-x}$Au$_{x}$ ($x=0,\ 0.1$) by time-resolved THz spectroscopy for temperatures from 2 up to 300\,K.
Fiebig, Manfred   +6 more
core   +1 more source

Terahertz Spectroscopy of Tetrameric Peptides [PDF]

open access: yesThe Journal of Physical Chemistry Letters, 2019
Determining the sequence and structure of peptides is crucial for understanding their structure-property relationships. Among many techniques, structures are typically elucidated using nuclear magnetic resonance spectroscopy and single crystal X-ray diffraction measurements.
Jens Neu   +7 more
openaire   +4 more sources

Multiple Photoconductive Antennas Terahertz Power Synthesis Technology Based on Time-Domain Waveform Consistency

open access: yesIEEE Photonics Journal, 2017
In order to increase the terahertz output power of the photoconductive antenna, a new multiple terahertz power synthesis technology based on terahertz time domain spectroscopy waveform consistency is proposed. The dipole photoconductive antenna with 500-&
Hu Deng   +3 more
doaj   +1 more source

Phase change of Ge2Sb2Te5 under terahertz laser illumination

open access: yesAPL Materials, 2021
Ge2Sb2Te5 (GST) is the typical phase change material (PCM) that can reversibly transform between the amorphous (a) and crystalline (c) states. Because the optical properties are phase-dependent, GST has been widely used in various photonic applications ...
Kang Zhou   +10 more
doaj   +1 more source

Real-time and accurate calibration detection of gout stones based on terahertz and Raman spectroscopy

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Gout is a metabolic disease that can result in the formation of gout stones. It is essential to promptly identify and confirm the type of gout stone to alleviate pain and inflammation in patients and prevent complications associated with gout stones ...
Han Li   +8 more
doaj   +1 more source

Insights into Hydration Dynamics and Cooperative Interactions in Glycerol-Water Mixtures by Terahertz Dielectric Spectroscopy. [PDF]

open access: yes, 2019
We report relaxation dynamics of glycerol-water mixtures as probed by megahertz-to-terahertz dielectric spectroscopy in a frequency range from 50 MHz to 0.5 THz at room temperature.
Ali Charkhesht   +8 more
core   +2 more sources

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