Zobrazeno 1 - 5
of 5
pro vyhledávání: '"N. R. Greenall"'
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 2875-2887 (2022)
The chemistry and reaction kinetics of reactive species dominate changes to the composition of complex chemical systems, including Earth's atmosphere. Laboratory experiments to identify reactive species and their reaction products, and to monitor the
Externí odkaz:
https://doaj.org/article/21c28a00a8aa4a2f828e60450cc81737
Autor:
Lianhe Li, Alexander Giles Davies, N. R. Greenall, Edmund H. Linfield, D.O. Acheampong, John Cunningham, Anton Valavanis, Andrew D. Burnett, Hemant Desai
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 38:325-338
The development and use of terahertz (THz) frequency spectroscopy systems for security screening has shown an increased growth over the past 15 years. In order to test these systems in real-world situations, safe simulants of illicit materials, such
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26b0bebbfc278284cd710330850febe6
https://doi.org/10.1007/s10762-016-0336-z
https://doi.org/10.1007/s10762-016-0336-z
Autor:
N. R. Greenall, Alexander Giles Davies, Lianhe Li, Andrew D. Burnett, John Cunningham, Edmund H. Linfield
Publikováno v:
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
In terahertz spectroscopy, multi-layered samples often need to be measured, for instance in a liquid flow cell, and this complicates the extraction of material parameters. We present a spectroscopic parameter extraction algorithm for multilayer sampl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6d456127056c864c4419a921c8d3769
https://doi.org/10.1109/irmmw-thz.2016.7758468
https://doi.org/10.1109/irmmw-thz.2016.7758468
Autor:
Alexander Giles Davies, Lianhe Li, Andrew D. Burnett, Edmund H. Linfield, N. R. Greenall, John Cunningham
Publikováno v:
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
We present a method of calculating the measurement variance-covariance matrix of a spectroscopic sample's complex refractive index from time-domain statistics in order to estimate uncertainty of a measurement. We compare this method to a numerical an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0a907655f43de30a2ee0bc30a15d94e
https://doi.org/10.1109/irmmw-thz.2016.7758762
https://doi.org/10.1109/irmmw-thz.2016.7758762
Autor:
Christopher D. Wood, Lianhe Li, Andrew D. Burnett, Alexander Giles Davies, N. R. Greenall, Edmund H. Linfield, Christopher Russell, John Cunningham
Publikováno v:
2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
We demonstrate how a transfer function model based parameter extraction method, combined with total variance analysis, allows the extraction of both the complex refractive index and the thickness of a sample over a bandwidth of >6 THz from THz time-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97efd825d85dc433b104da16fcf10878
https://doi.org/10.1109/irmmw-thz.2015.7327467
https://doi.org/10.1109/irmmw-thz.2015.7327467