Results 31 to 40 of about 23,598 (330)

Dual terahertz comb spectroscopy with a single free-running fibre laser [PDF]

, 2018
Dual THz comb spectroscopy has the potential to be used as universal THz spectroscopy with high spectral resolution, high spectral accuracy, and broad spectral coverage; however, the requirement for dual stabilized femtosecond lasers hampers its ...
Hu, Guoqing, Li, Ting, Minamikawa, Takeo, Mizuguchi, Tatsuya, Nitta, Kazuki, Oe, Ryo, Yasui, Takeshi, Zhao, Xin, Zheng, Zheng   +8 more
core   +2 more sources

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

Qualitative and Quantitative Analysis of Caffeine in Medicines by Terahertz Spectroscopy Using Machine Learning Method

IEEE Access, 2021
Caffeine is an alkaloid and may be the most commonly ingested pharmacologically active substance in the world, but continuous abuse may lead to “caffeine poisoning”.
Qingrou Yang, Luping Wu, Chenjun Shi, Xu Wu, Xiaohong Chen, Wanwan Wu, Huinan Yang, Zijie Wang, Linggao Zeng, Yan Peng   +9 more
doaj   +1 more source

Nonlinear two-dimensional terahertz photon echo and rotational spectroscopy in the gas phase [PDF]

, 2016
Ultrafast two-dimensional spectroscopy utilizes correlated multiple light-matter interactions for retrieving dynamic features that may otherwise be hidden under the linear spectrum.
Fleischer, Sharly, Hwang, Harold Y., Lu, Jian, Nelson, Keith A., Ofori-Okai, Benjamin K., Zhang, Yaqing   +5 more
core   +2 more sources

Identification of Rice Varieties Based on Terahertz Time Domain Spectroscopy

Shipin gongye ke-ji, 2022
In order to achieve accurate identification of rice varieties, a rice variety identification method based on terahertz time-domain spectroscopy (THz-TDS) technology was proposed.
Qian WANG, Hongyi GE, Yuying JIANG, Yuan ZHANG, Yifei QIN   +4 more
doaj   +1 more source

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

, 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
Born, Nagai, Rytov, Saha, Shimul C. Saha
core   +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

Terahertz dipole nanoantenna arrays: resonance characteristics [PDF]

, 2012
Resonant dipole nanoantennas promise to considerably improve the capabilities of terahertz spectroscopy, offering the possibility of increasing its sensitivity through local field enhancement, while in principle allowing unprecedented spatial resolutions,
Angelis, Francesco, Chirumamilla, Manohar, Clerici, Matteo, Das, Gobind, Fabrizio, Enzo, Liberale, Carlo, Morandotti, Roberto, Peccianti, Marco, Razzari, Luca, Shalaby, Mostafa, Toma, Andrea, Zaccaria, Remo Proietti   +11 more
core   +1 more source

Terahertz Spectral Characteristics of Konjac Gum Determined via Microfluidic Technology

International Journal of Optics, 2022
Terahertz radiation enables nondestructive testing of biological samples, but is challenged by its high absorption in aqueous samples, so microfluidic technology is introduced to reduce the absorption.
Huimin Jiang, Qingjun Li, Yan Shen, Hangyu Zhou, Yuchai Li, Bo Su, Cunlin Zhang   +6 more
doaj   +1 more source

Terahertz spectra of electrolyte solutions under applied electric and magnetic fields

Journal of the European Optical Society-Rapid Publications, 2022
Most biomolecules require an aqueous environment to fully exert their biological activity. However, the rotation mode, vibration mode, and energy associated with the hydrogen bonding network of water are in the terahertz band, resulting in strong ...
Shen Yan, Li Qingjun, Ding Jing, Wang Guoyang, Zhang Fengxuan, Su Bo, Zhang Cunlin   +6 more
doaj   +1 more source