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175 results

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Page 1
Impedance Spectroscopy of Encapsulated Single Graphene Layers.
Schmidt R, Carrascoso Plana F, Nemes NM, Mompeán F, García-Hernández M. Schmidt R, et al. Nanomaterials (Basel). 2022 Feb 27;12(5):804. doi: 10.3390/nano12050804. Nanomaterials (Basel). 2022. PMID: 35269292 Free PMC article.
In this work, we demonstrate the use of electrical impedance spectroscopy (EIS) for the disentanglement of several dielectric contributions in encapsulated single graphene layers. The dielectric data strongly vary qualitatively with the nominal graphene resistance. …
In this work, we demonstrate the use of electrical impedance spectroscopy (EIS) for the disentanglement of several dielectric contrib …
Experimental factors effecting stability of Electrochemical Impedance Spectroscopy Measurements.
Koo B, Weiland J. Koo B, et al. Annu Int Conf IEEE Eng Med Biol Soc. 2018 Jul;2018:2949-2952. doi: 10.1109/EMBC.2018.8512973. Annu Int Conf IEEE Eng Med Biol Soc. 2018. PMID: 30441018
Impedance measurement using Electrochemical Impedance Spectroscopy is a widely utilized technique in neural electrodes. Research and clinical devices that incorporate stimulating and recording microelectrodes routinely characterize the material's integrity and its f …
Impedance measurement using Electrochemical Impedance Spectroscopy is a widely utilized technique in neural electrodes. Resear …
[High impedance electrodes].
Fröhlig G. Fröhlig G. Herzschrittmacherther Elektrophysiol. 2001 Sep;12(3):131-40. doi: 10.1007/s003990170017. Herzschrittmacherther Elektrophysiol. 2001. PMID: 27432332 German.
This design does not compromise sensing if the input impedance of the amplifier used is adequate (>30komega). In the long term (2 up to 5 years post-implant), typical impedance values range between 900 and 1200omega, pacing thresholds are below 1.0V @ 0.5 ms, and …
This design does not compromise sensing if the input impedance of the amplifier used is adequate (>30komega). In the long term (2 …
Estimation of Physiological Impedance from Neuromuscular Pulse Data.
Chiles BD, Nerheim MH, Markle RC, Brave MA, Panescu D, Kroll MW. Chiles BD, et al. Annu Int Conf IEEE Eng Med Biol Soc. 2021 Nov;2021:1246-1251. doi: 10.1109/EMBC46164.2021.9630202. Annu Int Conf IEEE Eng Med Biol Soc. 2021. PMID: 34891513
For this reason, newer generation CEWs such as the TASER() X3, X2 and X26P models have feed-forward control circuits to keep the delivered charge constant regardless of impedance. Our main goal was to explore the load limits for this "charge metering" system. ...We used no …
For this reason, newer generation CEWs such as the TASER() X3, X2 and X26P models have feed-forward control circuits to keep the delivered c …
Evaluations of a Detector-Limited Digital Impedance Bridge.
Feige M, Schlamminger S, Waltrip B, Berilla M, Wang Y. Feige M, et al. J Res Natl Inst Stand Technol. 2021 Apr 6;126:126006. doi: 10.6028/jres.126.006. eCollection 2021. J Res Natl Inst Stand Technol. 2021. PMID: 36475083 Free PMC article.
We tested a simple digital impedance bridge using two nominally equal resistors to form a 1:1 ratio. ...
We tested a simple digital impedance bridge using two nominally equal resistors to form a 1:1 ratio. ...
Variable Impedance Control of Powered Knee Prostheses Using Human-Inspired Algebraic Curves.
Mohammadi A, Gregg RD. Mohammadi A, et al. J Comput Nonlinear Dyn. 2019 Oct 1;14(10):101007-10100710. doi: 10.1115/1.4043002. Epub 2019 Sep 9. J Comput Nonlinear Dyn. 2019. PMID: 32280314 Free PMC article.
In this article, we propose employing an algebraic curve representation of nominal human walking data for a powered knee prosthesis controller design. The proposed algebraic curve representation encodes the desired holonomic relationship between the human and the powered p …
In this article, we propose employing an algebraic curve representation of nominal human walking data for a powered knee prosthesis c …
A novel compact low impedance Marx generator with quasi-rectangular pulse output.
Liu H, Jiang P, Yuan J, Wang L, Ma X, Xie W. Liu H, et al. Rev Sci Instrum. 2018 Apr;89(4):044703. doi: 10.1063/1.5018804. Rev Sci Instrum. 2018. PMID: 29716325
In this paper, a novel low impedance compact Marx generator with near-square pulse output based on the Fourier theory is developed. ...Each module comprises an integrative single-ended plastic case capacitor with a nominal value of 54 nF, four ceramic capacitors wit …
In this paper, a novel low impedance compact Marx generator with near-square pulse output based on the Fourier theory is developed. . …
Coplanar electrode microfluidic chip enabling accurate sheathless impedance cytometry.
De Ninno A, Errico V, Bertani FR, Businaro L, Bisegna P, Caselli F. De Ninno A, et al. Lab Chip. 2017 Mar 14;17(6):1158-1166. doi: 10.1039/c6lc01516f. Lab Chip. 2017. PMID: 28225104
Microfluidic impedance cytometry offers a simple non-invasive method for single-cell analysis. ...This metric is exploited to correct the estimated size of polystyrene beads of 5.2, 6 and 7 mum nominal diameter, reaching coefficient of variations lower than the manu …
Microfluidic impedance cytometry offers a simple non-invasive method for single-cell analysis. ...This metric is exploited to correct …
Bioelectrical Impedance Phase Angle and Morbidity and Mortality in Critically Ill Children.
Zamberlan P, Feferbaum R Associate Professor of Pediatrics, Doria Filho U, Brunow de Carvalho W Full Professor of Pediatrics, Figueiredo Delgado A Associate Professor of Pediatrics. Zamberlan P, et al. Nutr Clin Pract. 2019 Feb;34(1):163-171. doi: 10.1002/ncp.10201. Epub 2018 Oct 10. Nutr Clin Pract. 2019. PMID: 30303570
METHODS: Data from children aged 2 months-18 years were collected, and bioelectrical impedance was performed to obtain phase angle. Severity was evaluated by scoring the Pediatric Index of Mortality. Descriptive statistics were reported for nominal variables. Receiv …
METHODS: Data from children aged 2 months-18 years were collected, and bioelectrical impedance was performed to obtain phase angle. S …
Positional dependence of particles in microfludic impedance cytometry.
Spencer D, Morgan H. Spencer D, et al. Lab Chip. 2011 Apr 7;11(7):1234-9. doi: 10.1039/c1lc20016j. Epub 2011 Feb 28. Lab Chip. 2011. PMID: 21359365
Single cell impedance cytometry is a label-free electrical analysis method that requires minimal sample preparation and has been used to count and discriminate cells on the basis of their impedance properties. ...We demonstrate that for a nominal 40 mum 40 mu …
Single cell impedance cytometry is a label-free electrical analysis method that requires minimal sample preparation and has been used …
175 results