Dielectric properties of oil-water complexes using terahertz transmission spectroscopy

被引:60
作者
Gorenflo, S
Tauer, U
Hinkov, I
Lambrecht, A
Buchner, R
Helm, H
机构
[1] Fraunhofer Inst Phys Measurement Tech, D-79110 Freiburg, Germany
[2] Univ Regensburg, Inst Phys & Theoret Chem, D-93040 Regensburg, Germany
[3] Univ Freiburg, Inst Phys, Dept Mol & Opt Phys, D-79104 Freiburg, Germany
关键词
D O I
10.1016/j.cplett.2006.01.108
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Terahertz time-domain spectroscopy (THz-TDS) is used to investigate the water content in synthetic oils. For this purpose, water was added to polyglycol oils, which are able to dissolve a certain percentage of water. Applying THz-TDS, changes in the absorption coefficient and refractive index are observed and characterized. Comparison of the experimental data with predictions based on Beer-Lambert and Lorentz-Lorenz-theory, respectively, exhibits excellent agreement and clearly indicates that water is not dissolved in form of clusters but rather via hydrogen-bonded oil-water complexes. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:494 / 498
页数:5
相关论文
共 22 条
[1]  
*ASTM, 1992, D174492 ASTM, P51903
[2]   Determination of the total unsaturation in vegetable oils by Fourier transform Raman spectroscopy and multivariate calibration [J].
Barthus, RC ;
Poppi, RJ .
VIBRATIONAL SPECTROSCOPY, 2001, 26 (01) :99-105
[3]   Application of mid infrared spectroscopy and iPLS for the quantification of contaminants in lubricating oil [J].
Borin, A ;
Poppi, RJ .
VIBRATIONAL SPECTROSCOPY, 2005, 37 (01) :27-32
[4]  
Born M., 1964, Principles of optics, VSecond, DOI 10.1017/CBO9781139644181
[5]   Material parameter estimation with terahertz time-domain spectroscopy [J].
Dorney, TD ;
Baraniuk, RG ;
Mittleman, DM .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2001, 18 (07) :1562-1571
[6]   Chemical recognition in terahertz time-domain spectroscopy and imaging [J].
Fischer, B ;
Hoffmann, M ;
Helm, H ;
Modjesch, G ;
Jepsen, PU .
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2005, 20 (07) :S246-S253
[7]   Far-infrared vibrational modes of DNA components studied by terahertz time-domain spectroscopy [J].
Fischer, BM ;
Walther, M ;
Jepsen, PU .
PHYSICS IN MEDICINE AND BIOLOGY, 2002, 47 (21) :3807-3814
[8]   Relation between dielectric and low-frequency Raman spectra of hydrogen-bond liquids [J].
Fukasawa, T ;
Sato, T ;
Watanabe, J ;
Hama, Y ;
Kunz, W ;
Buchner, R .
PHYSICAL REVIEW LETTERS, 2005, 95 (19)
[9]   Low-power terahertz time-domain spectroscopy with optimized electro-optical detection [J].
Gorenflo, S ;
Hinkov, I ;
Lambrecht, A ;
Fischer, B ;
Hoffmann, M ;
Helm, H ;
Jepsen, PU .
TM-TECHNISCHES MESSEN, 2005, 72 (7-8) :430-439
[10]   Generation and detection of terahertz pulses from biased semiconductor antennas [J].
Jepsen, PU ;
Jacobsen, RH ;
Keiding, SR .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1996, 13 (11) :2424-2436