Results 31 to 40 of about 6,090 (227)

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

PLoS 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, Christine E Sosiak, Jonpierre Grajales, John Hawkins, Louis Rizzo, Alexander Clark, Samuel Gatley, Ian Gatley, John Federici   +8 more
doaj   +1 more source

Terahertz Spectroscopy of Tetrameric Peptides [PDF]

The 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, Elizabeth A. Stone, Jacob A. Spies, Golo Storch, Ayaka S. Hatano, Brandon Q. Mercado, Scott J. Miller, Charles A. Schmuttenmaer   +7 more
openaire   +4 more sources

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

IEEE 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, Liping Shang, Weiwei Qu, Xiaoxia Li   +3 more
doaj   +1 more source

Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology

IEEE Access, 2020
The optical properties of polymers and glasses useful for terahertz applications are experimentally characterized using terahertz time-domain spectroscopy (THz-TDS). A standard system setup utilizing transmission spectroscopy is used to measure different
Md Saiful Islam, Cristiano M. B. Cordeiro, Md J. Nine, Jakeya Sultana, Alice L. S. Cruz, Alex Dinovitser, Brian Wai-Him Ng, Heike Ebendorff-Heidepriem, Dusan Losic, Derek Abbott   +9 more
doaj   +1 more source

Phase change of Ge2Sb2Te5 under terahertz laser illumination

APL 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, Junyi Nan, Jiabin Shen, Ziping Li, J. C. Cao, Zhitang Song, Min Zhu, Boqu He, Ming Yan, Heping Zeng, Hua Li   +10 more
doaj   +1 more source

Anisotropy of laser-induced electro-response in shale: Modelling and experimental validation

International Journal of Mining Science and Technology
Laser-induced electro-response (LIER), as a new method that complements conventional rock physics testing techniques, is expected to address issues such as of unclear mechanisms, model deficiency, inconsistent evaluation parameters, and difficulty in ...
Xuecong Liu, Zhengchun Hong, Yuqi Jiao, Kun Zhao, Xinyang Miao   +4 more
doaj   +1 more source

Coal-rock interface recognition based on terahertz time-domain spectroscopy

Gong-kuang zidonghua, 2017
In order to study feasibility of coal-rock interface recognition based on terahertz time-domain spectroscopy, some experiments were taken out by using terahertz time-domain spectroscopy, which used gas coal and sandstone powder tablet as samples.
WANG Xin, HU Kexiang, YU Xiao, DING Enjie   +3 more
doaj   +1 more source

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

Frontiers 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, Han Li, Yuxin Zhou, Yi Wu, Yanfang Jiang, Hui Bao, Ai Peng, Yongni Shao, Yongni Shao   +8 more
doaj   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Frequency Range Optimization for Continuous Wave Terahertz Imaging

Applied Sciences, 2023
With shorter wavelengths than microwaves and greater penetration depth than infrared light, waves in the terahertz spectrum offer unique material testing opportunities.
Blaž Pongrac, Andrej Sarjaš, Dušan Gleich   +2 more
doaj   +1 more source