Title :
Real-time in situ measurement of particle size in flowing powders by terahertz time-domain spectroscopy
Author :
May, Robert K. ; Evans, Mike ; Zhong, Shuncong ; Clarkson, Richard ; Shen, Yaochun ; Gladden, Lynn F. ; Zeitler, J. Axel
Author_Institution :
Dept. of Chem. Eng. & Biotechnol., Univ. of Cambridge, Cambridge, UK
Abstract :
We present the results of real-time reflection terahertz time-domain spectroscopy (THz-TDS) measurements of flowing powders. The data shows a clear relationship between the sizes of particles flowing through a tube to measured scattering losses at terahertz frequencies. The particle size of the powder covers the range of typical length-scales used in the pharmaceutical and food industry.
Keywords :
food processing industry; particle size measurement; pharmaceutical industry; pipe flow; powder technology; terahertz spectroscopy; time-domain analysis; flowing powders; food industry; manufacturing industries; pharmaceutical industry; powder processing; real-time in situ particle size measurement; scattering loss measurement; terahertz time-domain spectroscopy; tube flow; Frequency measurement; Loss measurement; Particle measurements; Particle scattering; Powders; Reflection; Size measurement; Spectroscopy; Submillimeter wave measurements; Time domain analysis;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325553
