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@ARTICLE{Barannik:827767,
author = {Barannik and Vitusevich, Svetlana and Gubin and Protsenko
and Cherpak},
title = {{THE} {MEASURING} {CELL} {BASED} {ON} {THE} {QUARTZ}
{QUAZIOPTICAL} {RESONATOR} {FOR} {RESEARCH} {ON}
{DIELECTRIC} {LIQUIDS} {IN} {THE} {SUB}-{THZ} {RANGE}},
journal = {Telecommunications and radio engineering},
volume = {75},
issn = {0040-2508},
address = {New York, NY},
publisher = {Scripta Technica, Inc.},
reportid = {FZJ-2017-01873},
pages = {1583-1590},
year = {2016},
abstract = {Using WGM resonators allows achieving a high accuracy in
determining the dielectric permittivity of substances due to
their high Q-factor. The resonator with a microfluidic
channel is promising for the study of small-volume liquids
that is especially important in the case of biologic
liquids. In a Ka-band a sapphire resonator with microfluidic
channel has been proposed as a measuring cell, but in the
sub-THz range a quartz resonator has more suitable
characteristics due to its high Q-factor. In the paper we
offer a measuring cell for determining the complex
permittivity of liquids in the sub-THz range. The cell is
designed on the basis of a quasi-optical quartz resonator
with a layer of plastic containing a microfluidic channel.
Experimental studies of the resonator structure are carried
out and a model for numerical research in the software
COMSOL Multiphysics program is proposed. By comparison of
the resonator frequencies and Q-factor values with the
corresponding values, obtained using the numerical model,
the correction of the model has been carried out for the
water-filled microfluidic channel. It is shown that the
model for numerical studies correctly describes the
resonator structure. The experimental and calculated values
of the resonator frequency and of the Q-factor, obtained for
the microfluidic channel filled with substances the complex
permittivity of which is well known (methanol, propanol,
ethanol, acetone), are in good agreement. The resonator
proposed may be used as a measuring cell for determining a
small-volume liquid permittivity by a special calibration
procedure.},
cin = {ICS-8},
ddc = {620},
cid = {I:(DE-Juel1)ICS-8-20110106},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
doi = {10.1615/TelecomRadEng.v75.i17.60},
url = {https://juser.fz-juelich.de/record/827767},
}