Precise measurement of the complex permittivity of low-to-medium-loss standard liquids at 285 GHz

Kilp, H.

doi:10.1088/0022-3735/10/10/012

Cited by 16 publications

(7 citation statements)

References 8 publications

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“…The 138 G H z frequency was generated by a Hughes impatt oscillator, the other three frequencies were deliv ered by a methanol/m ethyl iodide laser system pumped by a C 0 2 laser [36,37]. A differential method of absorption measurement was applied which makes use of two transmission cells in tandem, where the length of the chambers filled with solution and sol vent, respectively, are continuously varied in opposite sense [38].…”

Section: Methodsmentioning

confidence: 99%

Dielectric Properties of 1-Hexanol in Mesitylene Solution on Admixture of Aromatic Dihydric Alcohols

Turky

Hanna

Klages

et al. 1994

Zeitschrift Für Naturforschung A

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Broadband dielectric relaxation spectra (at 20 to 40 °C) are reported for three liquid alcoh ol/non polar solvent systems: Binary hexanol/mesitylene mixtures and two corresponding ternary mixtures, where 5 percent of hexanol are replaced by a dihydric alcohol, namely resorcinol (1,3-dihydroxyben zene) or 2,2'-dihydroxydiphenyl. The concentration of the polar substance(s) ranges from dilute solutions to pure alcohol(s). The lower frequency relaxation contribution, which generally is the more dominating the higher the alcohol concentration, is additionally enhanced by the diol admix ture in the case of low and moderate concentrations. This can be understood as a hetero-association effect, the diol m olecules playing a bridging role, which also leads to an increase in the mean lifetime o f associated states.

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Section: Methodsmentioning

confidence: 99%

Dielectric Properties of 1-Hexanol in Mesitylene Solution on Admixture of Aromatic Dihydric Alcohols

Turky

Hanna

Klages

et al. 1994

Zeitschrift Für Naturforschung A

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“…Interferometers have been widely used to expand the upper limit of microwave measurements up to 300 GHz [287][288][289][290][291][292][293][294][295][296][297]. Avoiding wall losses and thus providing a superior Q0, they are particularly adapted to low-loss materials.…”

Section: Free-space Configurationsmentioning

confidence: 99%

“…Avoiding wall losses and thus providing a superior Q0, they are particularly adapted to low-loss materials. Michelson [287], Mach-Zender [291], and Fabry-Perot [294] type configurations have proven appropriate. In correspondence with many cavity resonator systems, the resonance curve may be also recorded at fixed frequency by slightly varying the interferometer dimensions, i. e. by precisely moving a reflector (or mirror; 8, Fig.…”

Section: Free-space Configurationsmentioning

confidence: 99%

Electromagnetic moisture measurement

Hübner¹,

Kaatze²

2016

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XII which we believe to be useful when considering the design of special sensors and appropriate measurement techniques for moisture determination. A chapter dealing with the dielectric properties of water in its different states of interaction is also included. It is intended to provide information concerning the adequate modelling of data derived from the electromagnetic signals when affected by moist materials. Selected applications are discussed in order to introduce some proven examples of electromagnetic moisture sensors and related measurement methods. Finally, a collection of dielectric data for liquids is presented which may serve as reference in calibration procedures. Preferably data obtained from calibration-free methods is given. Additionally, most of it has been measured at different laboratories and the different series of data agree within the limits of experimental uncertainty. A detailed bibliography is provided in order to assist with further reading. We are indebted to Alexander Brandelik, Karlsruhe, who spent much time to critically read the manuscript before publication. We thank Alexander Schaub, Mannheim, for valuable help with editing the book, including proofreading and formatting.

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“…To explain the variation of dispersion step in terms of distinct species, a number of models have been developed [21,22]. These will be kept in mind in the discussion subsequent to the consideration of the dynamic data.…”

Section: Dynamic Dielectric Propertiesmentioning

confidence: 99%

Dielectric Studies of Dilute Solutions of Binary Mixtures of N,N-Dimethylformamide and 1-Hexanol in the Non-Polar Solvent Mesitylene

Turky¹

1997

Physics and Chemistry of Liquids

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The dielectric loss in the frequency range 200 MHz-10 GHz have been measured in dilute solutions of mesitylene for three binary mixtures of ( = 0.25,0.50 and 0.75 MF of N,N-dimethylformamide (DMFA) in 1 -hexanol. Similar measurements have also been carried out for dilute solutions of 1 -hexanol [ = 0 and DMFA ( = 1 in mesitylene. The variation of static permittivity E, and dielectric loss 6'' of DMFA-Mesitylene systems as a funtion of ( indicates a solute-solute type of molecular association between both components through a strong hydrogen bonding. The molecular association between DMFA and 1-hexanol is maximum around 1:l ratio (i.e. C = 0.50).

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Precise measurement of the complex permittivity of low-to-medium-loss standard liquids at 285 GHz

Cited by 16 publications

References 8 publications

Dielectric Properties of 1-Hexanol in Mesitylene Solution on Admixture of Aromatic Dihydric Alcohols

Dielectric Properties of 1-Hexanol in Mesitylene Solution on Admixture of Aromatic Dihydric Alcohols

Electromagnetic moisture measurement

Dielectric Studies of Dilute Solutions of Binary Mixtures of N,N-Dimethylformamide and 1-Hexanol in the Non-Polar Solvent Mesitylene

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