scholarly journals Use of an Insulation Layer on the Connection Tracks of a Biosensor with Coplanar Electrodes to Increase the Normalized Impedance Variation

Biosensors ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 108 ◽  
Author(s):  
Arthur Luiz Alves de Araujo ◽  
Julien Claudel ◽  
Djilali Kourtiche ◽  
Mustapha Nadi
Keyword(s):  
New Technologies ◽  
Lab On A Chip ◽  
Insulation Layer ◽  
Spectroscopy Technique ◽  
Time Consumption ◽  
Cutoff Frequencies ◽  
Impedance Variation ◽  
Coplanar Electrodes ◽  
Impedance Spectroscopy Technique

New technologies, such as biosensors and lab-on-a-chip, are reducing time consumption and costs for the detection and characterization of biological cells. One challenge is to detect and characterize cells and bacteria one by one or at a very low concentration. In this case, measurements have very low variations that can be difficult to detect. In this article, the use of an insulation layer on the connection tracks of a biosensor with coplanar electrodes is proposed to improve a biosensor previously developed. The impedance spectroscopy technique was used to analyze the influence of the insulation layer on the cutoff frequencies and on the normalized impedance variation. This solution does not induce changes in the cutoff frequencies, though it permits improving the normalized impedance variations, compared to the same biosensor without the insulation layer.

Characterization of Thermal Behavior of Commercial NCR 18650B Batteries under Varying Cycling Conditions

MRS Advances ◽  
2017 ◽  
Vol 2 (54) ◽  
pp. 3329-3334 ◽  
Author(s):  
Bo Dong ◽  
Kazi Ahmed ◽  
Yige Li ◽  
Cengiz Sinan Ozkan ◽  
Mihrimah Ozkan
Keyword(s):  
Structural Change ◽  
Electrochemical Impedance Spectroscopy ◽  
Ionic Conductivity ◽  
Impedance Spectroscopy ◽  
Thermal Behavior ◽  
Electrochemical Impedance ◽  
Spectroscopy Technique ◽  
Impedance Spectroscopy Technique

ABSTRACTTo better understand the condition of commercial batteries used in Tesla EVs and stationary applications under real performing situations, this article focuses on tracking the temperature of commercial batteries during varying cycling conditions. We have found evidence of significant impact of cycling methods on batteries in ionic conductivity, inner impedance development, and structural change in both cathode and anode electrodes, which will be further analyzed by electrochemical impedance spectroscopy technique in the following research.

Broadband dielectric characterization of zebrafish embryo suspensions using the impedance spectroscopy technique

2017 ◽  
pp. 607-610
Author(s):  
Sagrario Muñoz ◽  
José Luis Sebastián ◽  
Maria Carmen Pérez ◽  
Jesús Pablo García ◽  
Pedro Antoranz ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Zebrafish Embryo ◽  
Spectroscopy Technique ◽  
Dielectric Characterization ◽  
Impedance Spectroscopy Technique

Electrical Properties of Y2NiMnO6 Ceramics Sintered at High Temperature

2015 ◽  
Vol 804 ◽  
pp. 55-58 ◽  
Author(s):  
Thanapong Sareein ◽  
Panakamon Deeyai ◽  
Bundit Putasaeng ◽  
Naphat Chathirat
Keyword(s):  
Thermal Decomposition ◽  
High Temperature ◽  
Electrical Properties ◽  
Double Perovskites ◽  
Decomposition Technique ◽  
Frequency Range ◽  
Spectroscopy Technique ◽  
Sintering Time ◽  
Impedance Spectroscopy Technique

In this work, impedance spectroscopy technique was used in order to investigate the electric properties of double perovskites of the Y2NiMnO6 ceramics, which were prepared by thermal decomposition technique at 800°C for 6 hours and then sintered at a high temperature of 1400°C for 6, 12, 18, and 24 hours. Consequently, the electric characterization of the Y2NiMnO6 ceramics was performed at 30°C °C in the frequency range from 102 Hz to 108 Hz. The results in the Rg with 10,000, 9,990, 6,400, and 1,700 (Ω) at sintering time, respectively. Dispersion was observed in the variation of impedance values with frequency. Possible reason for all the above observation was discussed.

scholarly journals Delivering Personalized Care at a Distance: How Telemedicine Can Foster Getting to Know the Patient as a Person

2021 ◽  
Vol 11 (2) ◽  
pp. 137
Author(s):  
Janet Record ◽  
Roy Ziegelstein ◽  
Colleen Christmas ◽  
Cynthia Rand ◽  
Laura Hanyok
Keyword(s):  
New Technologies ◽  
Office Visit ◽  
Modern Technology ◽  
Office Visits ◽  
Patient Centeredness ◽  
Patient Centered ◽  
Personalized Care ◽  
High Satisfaction

The promise of precision medicine is based on the use of new technologies to better characterize patients by defining individuals in the areas of genomics, proteomics, metabolomics and other aspects of biologic variability. Wise application of modern technology can similarly transform health visits with patients, allowing for better characterization of the patient’s individual life circumstances than possible in a traditional office visit. The use of, and experience with, telemedicine have increased significantly during the COVID-19 pandemic. Patients and clinicians report high satisfaction with telemedicine, and the quality of communication and patient-centeredness experienced in this setting are both rated highly. In this article, we explore the benefits offered by telemedicine in facilitating personalized care with particular focus on telemedicine delivered by video platforms. We propose strategies and skills specific to the effective implementation of personalized telemedicine, drawing on literature in patient-centered communication and home visits. While traditional in-person office visits continue to offer important opportunities such as thorough physical examination and the potential for enhanced non-verbal communication, telemedicine offers many important advantages that can facilitate the process of getting to know the patient as a person.

Application of Electrochemical Techniques to Characterization of the Corrosion Behaviors of GW63 Alloys

2007 ◽  
Vol 546-549 ◽  
pp. 571-574
Author(s):  
Xing Wu Guo ◽  
Jian Wei Chang ◽  
Shang Ming He ◽  
Peng Huai Fu ◽  
Wen Jiang Ding
Keyword(s):  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Open Circuit ◽  
Cyclic Polarization ◽  
Time Curve ◽  
Completely Monotonic ◽  
Treatment Conditions ◽  
Impedance Variation ◽  
Corrosion Behaviors

The corrosion behavior of GW63 (Mg-6wt.%Gd-3wt.%Y-0.4wt.%Zr) alloys in 5% NaCl aqueous solution has been investigated by PARSTAT 2273 instrument. The Open Circuit Potential (ECORR) vs. time curve, cyclic polarization (Pitting Scans) curve and Electrochemical Impedance Spectroscopy (EIS) was measured for the GW63 alloys in as-cast and T6 heat treatment conditions. The EIS results indicated that the tendency of impedance variation for as-cast condition was monotonic decreasing, however, the tendency of variation for T6 condition was not completely monotonic but the total tendency was decreasing. The values of impedance of GW63 alloy at 0.1 Hz are about 103 ohm-cm2 for as-cast and T6 condition.

scholarly journals Electrical impedance measurement system to assess in-situ experiments on epithelia under ELF magnetic fields exposure

2021 ◽  
Vol 19 (3) ◽  
pp. 217-226
Author(s):  
G. Domínguez ◽  
E. Cardiel ◽  
J.L Reyes ◽  
E. Sánchez ◽  
P.R. Hernández
Keyword(s):  
Impedance Spectroscopy ◽  
Magnetic Fields ◽  
Cell Cultures ◽  
Electrical Impedance ◽  
Controlled Environment ◽  
Spectroscopy Technique ◽  
In Situ Experiments ◽  
Impedance Spectroscopy Technique

Purpose: The development of an electric impedance meter based on the impedance spectroscopy technique, for in vitro and in situ experimentation, with cellular epithelia submitted to extremely low frequency magnetic fields in a controlled environment. Unlike other reported systems, a strength of the one presented here is that it avoids the influence of external factors on the experiment. Materials and methods: The designed system employs the electrical impedance values obtained by the impedance spectroscopy technique to determine the parameters of the simple equivalent electrical model of a cellular monolayer. The Madin-Darby Canine Kidney (MDCK) cell cultures were used as subjects of study in the experimental protocol. Results: The validation was carried out by comparing the transepithelial electrical impedance data of the cell cultures obtained with the developed system and those of the Cellzscope® commercial system used as the standard. Non-significant differences were obtained. Conclusion: It was confirmed that the developed system provides reliable values of transepithelial electrical impedance to experiment with cell cultures and take advantage of the controlled environment to reduce the effects of experimental management.

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