PMID- 29716359
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180504
LR  - 20180504
IS  - 1089-7623 (Electronic)
IS  - 0034-6748 (Linking)
VI  - 89
IP  - 4
DP  - 2018 Apr
TI  - A hollow coaxial cable Fabry-Perot resonator for liquid dielectric constant 
      measurement.
PG  - 045003
LID - 10.1063/1.5021684 [doi]
AB  - We report, for the first time, a low-cost and robust homemade hollow coaxial 
      cable Fabry-Perot resonator (HCC-FPR) for measuring liquid dielectric constant. 
      In the HCC design, the traditional dielectric insulating layer is replaced by 
      air. A metal disk is welded onto the end of the HCC serving as a highly 
      reflective reflector, and an open cavity is engineered on the HCC. After the open 
      cavity is filled with the liquid analyte (e.g., water), the air-liquid interface 
      acts as a highly reflective reflector due to large impedance mismatch. As a 
      result, an HCC-FPR is formed by the two highly reflective reflectors, i.e., the 
      air-liquid interface and the metal disk. We measured the room temperature 
      dielectric constant for ethanol/water mixtures with different concentrations 
      using this homemade HCC-FPR. Monitoring the evaporation of ethanol in 
      ethanol/water mixtures was also conducted to demonstrate the ability of the 
      sensor for continuously monitoring the change in dielectric constant. The results 
      revealed that the HCC-FPR could be a promising evaporation rate detection 
      platform with high performance. Due to its great advantages, such as high 
      robustness, simple configuration, and ease of fabrication, the novel HCC-FPR 
      based liquid dielectric constant sensor is believed to be of high interest in 
      various fields.
FAU - Zhu, Chen
AU  - Zhu C
AD  - Department of Electrical and Computer Engineering, Missouri University of Science 
      and Technology, Rolla, Missouri 65409, USA.
FAU - Zhuang, Yiyang
AU  - Zhuang Y
AD  - Department of Electrical and Computer Engineering, Missouri University of Science 
      and Technology, Rolla, Missouri 65409, USA.
FAU - Chen, Yizheng
AU  - Chen Y
AD  - Department of Electrical and Computer Engineering, Missouri University of Science 
      and Technology, Rolla, Missouri 65409, USA.
FAU - Huang, Jie
AU  - Huang J
AUID- ORCID: 0000000286592910
AD  - Department of Electrical and Computer Engineering, Missouri University of Science 
      and Technology, Rolla, Missouri 65409, USA.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Rev Sci Instrum
JT  - The Review of scientific instruments
JID - 0405571
EDAT- 2018/05/03 06:00
MHDA- 2018/05/03 06:01
CRDT- 2018/05/03 06:00
PHST- 2018/05/03 06:00 [entrez]
PHST- 2018/05/03 06:00 [pubmed]
PHST- 2018/05/03 06:01 [medline]
AID - 10.1063/1.5021684 [doi]
PST - ppublish
SO  - Rev Sci Instrum. 2018 Apr;89(4):045003. doi: 10.1063/1.5021684.