Results 31 to 40 of about 1,339,901 (286)

Ultrafast carrier generation in Bi1-xSbx thin films induced by intense monocycle terahertz pulses [PDF]

EPJ Web of Conferences, 2019
Using terahertz-pump and terahertz-probe spectroscopy, we investigated terahertz-induced carrier generation processes in Bi1-xSbx thin films. The field dependence of the terahertz-induced transmittance change indicates distinct nonlinearity related to ...
Katayama Ikufumi, Kawakami Hiroki, Araki Kotaro, Arashida Yusuke, Minami Yasuo, Nien Lie-Wei, Handegard Orjan Sele, Nagao Tadaaki, Kitajima Masahiro, Takeda Jun   +9 more
doaj   +1 more source

Quantitative Determination of Sucrose Adulterated in Red Ginseng by Terahertz Time-Domain Spectroscopy (THz-TDS) with Monte Carlo Uninformative Variable Elimination (MCUVE) and Support Vector Regression (SVR)

Journal of Spectroscopy, 2022
This paper introduces a method to detect the content of sucrose, an adulterant of red ginseng, based on terahertz spectroscopy. Experiments were carried out on red ginseng with 6 levels of adulterated concentrations using terahertz time-domain ...
Shubao Pan, Huo Zhang, Zhi Li, Tao Chen, Xianhua Yin   +4 more
doaj   +1 more source

High-temperature electromagnons in the magnetically induced multiferroic cupric oxide driven by intersublattice exchange [PDF]

, 2014
Magnetically induced ferroelectric multiferroics present an exciting new paradigm in the design of multifunctional materials, by intimately coupling magnetic and polar order.
Doig, K. I., Lloyd-Hughes, James, Lloyd-Hughes, J, Gaw, Stephen M., Gaw, SM, Doig, KI, Hétroy Wheeler, E. M., Boothroyd, AT, Hétroy Wheeler, EM, Prabhakaran, D, Boothroyd, Andrew T., Jones, S. P. P., Jones, SPP, Boothroyd, Andrew, Prabhakaran, Dharmalingam   +14 more
core   +1 more source

Terahertz absorption characteristics of ammonium salt solution based on self-sampling microfluidic chip

Scientific Reports, 2022
With the continuous development of terahertz (THz) detection technology, the use of terahertz spectroscopy to study chemical samples has become one of the indispensable tools in the field of biochemistry.
Qinghao Meng, Siyu Qian, Jing Ding, Qingjun Li, Xinyuan Zhao, Bo Su, Cunlin Zhang   +6 more
doaj   +1 more source

Terahertz Field Confinement in Nonlinear Metamaterials and Near-Field Imaging

Photonics, 2019
This article reviews recent advances in terahertz science and technology that rely on confining the energy of incident terahertz radiation to small, very sub-wavelength sized regions. We focus on two broad areas of application for such field confinement:
George R. Keiser, Pernille Klarskov
doaj   +1 more source

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

Results 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, Bo Peng, Xinyi Bai, Bo Su, Cunlin Zhang, Hailin Cui, Shengbo Zhang, Kai Li   +7 more
doaj   +1 more source

Machine Learning Techniques for THz Imaging and Time-Domain Spectroscopy

Sensors, 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

Stimulated terahertz emission due to electronic Raman scattering in silicon [PDF]

, 2009
Silicon-based semiconductors are intensively investigated over the past years as promising candidates for optoelectronic devices at terahertz (THz) frequencies [1]. Optically pumped intracenter silicon lasers, realized in the past decade in the THz range,
Pavlov, S.G., Hubers, H. W., Riemann, H., Hübers, H.-W., van der Meer, A.F.G., H. Riemann, R. Kh. Zhukavin, Redlich, B., Pavlov, S.G. (author), Böttger, U. (author), Abrosimov, N.V. (author), J. N. Hovenier, Abrosimov, N.V., Hübers, H.W. (author), Hübers, H.W., V. N. Shastin, Pavlov, S. G., Hovenier, J.N. (author), Böttger, U., Abrosimov, N. V., Shastin, V. N., Shastin, V.N., U. Böttger, N. V. Abrosimov, S. G. Pavlov, Zhukavin, R. K., Redlich, B. (author), Zhukavin, R.K., Hovenier, J. N., B. Redlich, Hovenier, J.N., Zhukavin, R.K. (author), A. F. G. van der Meer, Zhukavin, R.Kh., Van der Meer, A.F.G. (author), H.-W. Hübers, Shastin, V.N. (author), van der Meer, A. F. G., Riemann, H. (author)   +38 more
core   +2 more sources

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 for art conservation

IEICE Electronics Express, 2007
Terahertz spectroscopy has rapidly progressed, and is being applied to various research fields as a new non-invasive examination method. Scientific analysis is important for the conservation of art, as it can help to reveal the history of a work and to determine the proper materials for its restoration.
Kaori Fukunaga, Yuichi Ogawa, Shin'ichiro Hayashi, Iwao Hosako   +3 more
openaire   +2 more sources