The Experts below are selected from a list of 9648 Experts worldwide ranked by ideXlab platform
Volker Presser - One of the best experts on this subject based on the ideXlab platform.
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low voltage operation of a Silver Silver Chloride battery with high desalination capacity in seawater
RSC Advances, 2019Co-Authors: Samantha Husmann, Volker Presser, Pattarachai SrimukAbstract:Technologies for the effective and energy efficient removal of salt from saline media for advanced water remediation are in high demand. Capacitive deionization using carbon electrodes is limited to highly diluted salt water. Our work demonstrates the high desalination performance of the Silver/Silver Chloride conversion reaction by a Chloride ion rocking-chair desalination mechanism. Silver nanoparticles are used as positive electrodes while their chlorination into AgCl particles produces the negative electrode in such a combination that enables a very low cell voltage of only Δ200 mV. We used a Chloride-ion desalination cell with two flow channels separated by a polymeric cation exchange membrane. The optimized electrode paring between Ag and AgCl achieves a low energy consumption of 2.5 kT per ion when performing treatment with highly saline feed (600 mM NaCl). The cell affords a stable desalination capacity of 115 mg g−1 at a charge efficiency of 98%. This performance aligns with a charge capacity of 110 mA h g−1.
Pattarachai Srimuk - One of the best experts on this subject based on the ideXlab platform.
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low voltage operation of a Silver Silver Chloride battery with high desalination capacity in seawater
RSC Advances, 2019Co-Authors: Samantha Husmann, Volker Presser, Pattarachai SrimukAbstract:Technologies for the effective and energy efficient removal of salt from saline media for advanced water remediation are in high demand. Capacitive deionization using carbon electrodes is limited to highly diluted salt water. Our work demonstrates the high desalination performance of the Silver/Silver Chloride conversion reaction by a Chloride ion rocking-chair desalination mechanism. Silver nanoparticles are used as positive electrodes while their chlorination into AgCl particles produces the negative electrode in such a combination that enables a very low cell voltage of only Δ200 mV. We used a Chloride-ion desalination cell with two flow channels separated by a polymeric cation exchange membrane. The optimized electrode paring between Ag and AgCl achieves a low energy consumption of 2.5 kT per ion when performing treatment with highly saline feed (600 mM NaCl). The cell affords a stable desalination capacity of 115 mg g−1 at a charge efficiency of 98%. This performance aligns with a charge capacity of 110 mA h g−1.
Peyman Servati - One of the best experts on this subject based on the ideXlab platform.
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roll to roll electrochemical fabrication of non polarizable Silver Silver Chloride coated nylon yarn for biological signal monitoring
Textile Research Journal, 2019Co-Authors: Peter A Haddad, Amir Servati, Saeid Soltanian, Peyman Servati, Frank KoAbstract:The main goal of this work is to develop a fabrication process and system for Silver/Silver Chloride (Ag/AgCl)-coated yarn, as Ag/AgCl is the preferred non-polarizing material for interfacing with ...
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breathable dry Silver Silver Chloride electronic textile electrodes for electrodermal activity monitoring
Biosensors, 2018Co-Authors: Peter A Haddad, Amir Servati, Saeid Soltanian, Peyman ServatiAbstract:The focus of this study is to design and integrate Silver/Silver Chloride (Ag/AgCl) electronic textile (e-textile) electrodes into different textile substrates to evaluate their ability to monitor electrodermal activity (EDA). Ag/AgCl e-textiles were stitched into woven textiles of cotton, nylon, and polyester to function as EDA monitoring electrodes. EDA stimulus responses detected by dry e-textile electrodes at various locations on the hand were compared to the EDA signals collected by dry solid Ag/AgCl electrodes. 4-h EDA data with e-textile and clinically conventional rigid electrodes were compared in relation to skin surface temperature. The woven cotton textile substrate with e-textile electrodes (0.12 cm2 surface area, 0.40 cm distance) was the optimal material to detect the EDA stimulus responses with the highest average Pearson correlation coefficient of 0.913 ± 0.041 when placed on the distal phalanx of the middle finger. In addition, differences with EDA waveforms recorded on various fingers were observed. Trends of long-term measurements showed that skin surface temperature affected EDA signals recorded by non-breathable electrodes more than when e-textile electrodes were used. The effective design criteria outlined for e-textile electrodes can promote the development of comfortable and unobtrusive EDA monitoring systems, which can help improve our knowledge of the human neurological system.
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Breathable Dry Silver/Silver Chloride Electronic Textile Electrodes for Electrodermal Activity Monitoring
MDPI AG, 2018Co-Authors: Peter A Haddad, Amir Servati, Saeid Soltanian, Peyman ServatiAbstract:The focus of this study is to design and integrate Silver/Silver Chloride (Ag/AgCl) electronic textile (e-textile) electrodes into different textile substrates to evaluate their ability to monitor electrodermal activity (EDA). Ag/AgCl e-textiles were stitched into woven textiles of cotton, nylon, and polyester to function as EDA monitoring electrodes. EDA stimulus responses detected by dry e-textile electrodes at various locations on the hand were compared to the EDA signals collected by dry solid Ag/AgCl electrodes. 4-h EDA data with e-textile and clinically conventional rigid electrodes were compared in relation to skin surface temperature. The woven cotton textile substrate with e-textile electrodes (0.12 cm2 surface area, 0.40 cm distance) was the optimal material to detect the EDA stimulus responses with the highest average Pearson correlation coefficient of 0.913 ± 0.041 when placed on the distal phalanx of the middle finger. In addition, differences with EDA waveforms recorded on various fingers were observed. Trends of long-term measurements showed that skin surface temperature affected EDA signals recorded by non-breathable electrodes more than when e-textile electrodes were used. The effective design criteria outlined for e-textile electrodes can promote the development of comfortable and unobtrusive EDA monitoring systems, which can help improve our knowledge of the human neurological system
Peter A Haddad - One of the best experts on this subject based on the ideXlab platform.
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roll to roll electrochemical fabrication of non polarizable Silver Silver Chloride coated nylon yarn for biological signal monitoring
Textile Research Journal, 2019Co-Authors: Peter A Haddad, Amir Servati, Saeid Soltanian, Peyman Servati, Frank KoAbstract:The main goal of this work is to develop a fabrication process and system for Silver/Silver Chloride (Ag/AgCl)-coated yarn, as Ag/AgCl is the preferred non-polarizing material for interfacing with ...
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breathable dry Silver Silver Chloride electronic textile electrodes for electrodermal activity monitoring
Biosensors, 2018Co-Authors: Peter A Haddad, Amir Servati, Saeid Soltanian, Peyman ServatiAbstract:The focus of this study is to design and integrate Silver/Silver Chloride (Ag/AgCl) electronic textile (e-textile) electrodes into different textile substrates to evaluate their ability to monitor electrodermal activity (EDA). Ag/AgCl e-textiles were stitched into woven textiles of cotton, nylon, and polyester to function as EDA monitoring electrodes. EDA stimulus responses detected by dry e-textile electrodes at various locations on the hand were compared to the EDA signals collected by dry solid Ag/AgCl electrodes. 4-h EDA data with e-textile and clinically conventional rigid electrodes were compared in relation to skin surface temperature. The woven cotton textile substrate with e-textile electrodes (0.12 cm2 surface area, 0.40 cm distance) was the optimal material to detect the EDA stimulus responses with the highest average Pearson correlation coefficient of 0.913 ± 0.041 when placed on the distal phalanx of the middle finger. In addition, differences with EDA waveforms recorded on various fingers were observed. Trends of long-term measurements showed that skin surface temperature affected EDA signals recorded by non-breathable electrodes more than when e-textile electrodes were used. The effective design criteria outlined for e-textile electrodes can promote the development of comfortable and unobtrusive EDA monitoring systems, which can help improve our knowledge of the human neurological system.
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Breathable Dry Silver/Silver Chloride Electronic Textile Electrodes for Electrodermal Activity Monitoring
MDPI AG, 2018Co-Authors: Peter A Haddad, Amir Servati, Saeid Soltanian, Peyman ServatiAbstract:The focus of this study is to design and integrate Silver/Silver Chloride (Ag/AgCl) electronic textile (e-textile) electrodes into different textile substrates to evaluate their ability to monitor electrodermal activity (EDA). Ag/AgCl e-textiles were stitched into woven textiles of cotton, nylon, and polyester to function as EDA monitoring electrodes. EDA stimulus responses detected by dry e-textile electrodes at various locations on the hand were compared to the EDA signals collected by dry solid Ag/AgCl electrodes. 4-h EDA data with e-textile and clinically conventional rigid electrodes were compared in relation to skin surface temperature. The woven cotton textile substrate with e-textile electrodes (0.12 cm2 surface area, 0.40 cm distance) was the optimal material to detect the EDA stimulus responses with the highest average Pearson correlation coefficient of 0.913 ± 0.041 when placed on the distal phalanx of the middle finger. In addition, differences with EDA waveforms recorded on various fingers were observed. Trends of long-term measurements showed that skin surface temperature affected EDA signals recorded by non-breathable electrodes more than when e-textile electrodes were used. The effective design criteria outlined for e-textile electrodes can promote the development of comfortable and unobtrusive EDA monitoring systems, which can help improve our knowledge of the human neurological system
Gun-do Kim - One of the best experts on this subject based on the ideXlab platform.
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doxycycline hyclate mediated Silver Silver Chloride nanoparticles and their antibacterial activity
journal of nanostructure in chemistry, 2019Co-Authors: Maheshkumar Prakash Patil, Lei Lottice Anne Piad, Enkhnaran Bayaraa, Paul Subedi, Naresh Hiralal Tarte, Gun-do KimAbstract:In the present work, we used doxycycline hyclate (DX) and tetramethylguanidine (TMG) for the synthesis of Silver–Silver Chloride nanoparticles (DX-Ag–AgCl NPs) as a simple method for the production of nanoparticles (NPs). A new synthesis method for DX-Ag–AgCl NPs in aqueous medium, using the DX and TMG as a reducing and stabilizing agent, is reported. DX-Ag–AgCl NPs were characterized by transmission electron microscopy. The elemental composition and the crystalline nature of synthesized nanoparticles were determined by energy-dispersive X-ray (EDX) spectroscopy and X-ray diffraction (XRD) analysis, respectively. From EDX, it is confirmed that synthesized NPs contain elemental Silver and Chloride, and their crystalline nature was confirmed by XRD. The Fourier transform infra-red spectra showed the DX present in surface of DX-Ag–AgCl NPs. Synthesized NPs analyzed for antibacterial activity by agar well method against Gram-positive and Gram-negative pathogens. Synthesized DX-Ag–AgCl NPs were spherical shaped and in the range of 10–40 nm of size was observed from TEM images. In the crystalline nature, XRD peaks indicate the presence of Silver and Silver Chloride in produced NPs. Synthesized NPs show potential antibacterial activity on Bacillus cereus KCCM 11773, Bacillus subtilis KCCM 11316, Staphylococcus aureus KCCM 40050, Escherichia coli KCCM 11234, Klebsiella pneumoniae KCCM 11418, and Proteus vulgaris KCCM 40211.
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Doxycycline hyclate mediated Silver–Silver Chloride nanoparticles and their antibacterial activity
SpringerOpen, 2019Co-Authors: Maheshkumar Prakash Patil, Lei Lottice Anne Piad, Enkhnaran Bayaraa, Paul Subedi, Naresh Hiralal Tarte, Gun-do KimAbstract:Abstract In the present work, we used doxycycline hyclate (DX) and tetramethylguanidine (TMG) for the synthesis of Silver–Silver Chloride nanoparticles (DX-Ag–AgCl NPs) as a simple method for the production of nanoparticles (NPs). A new synthesis method for DX-Ag–AgCl NPs in aqueous medium, using the DX and TMG as a reducing and stabilizing agent, is reported. DX-Ag–AgCl NPs were characterized by transmission electron microscopy. The elemental composition and the crystalline nature of synthesized nanoparticles were determined by energy-dispersive X-ray (EDX) spectroscopy and X-ray diffraction (XRD) analysis, respectively. From EDX, it is confirmed that synthesized NPs contain elemental Silver and Chloride, and their crystalline nature was confirmed by XRD. The Fourier transform infra-red spectra showed the DX present in surface of DX-Ag–AgCl NPs. Synthesized NPs analyzed for antibacterial activity by agar well method against Gram-positive and Gram-negative pathogens. Synthesized DX-Ag–AgCl NPs were spherical shaped and in the range of 10–40 nm of size was observed from TEM images. In the crystalline nature, XRD peaks indicate the presence of Silver and Silver Chloride in produced NPs. Synthesized NPs show potential antibacterial activity on Bacillus cereus KCCM 11773, Bacillus subtilis KCCM 11316, Staphylococcus aureus KCCM 40050, Escherichia coli KCCM 11234, Klebsiella pneumoniae KCCM 11418, and Proteus vulgaris KCCM 40211
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morphological changes of bacterial cells upon exposure of Silver Silver Chloride nanoparticles synthesized using agrimonia pilosa
Microbial Pathogenesis, 2018Co-Authors: Maheshkumar Prakash Patil, Yong Bae Seo, Gun-do KimAbstract:Abstract Facile, eco-friendly synthesis of metal nanoparticles has been proposed as a cost effective method. In the present study, we propose the facile synthesis of Silver-Silver Chloride (Ag-AgCl) nanoparticles (NPs) using the medicinally important Agrimonia pilosa plant extract without addition of capping or stabilizing agents. The Ag-AgCl NPs synthesis was observed at 40 °C after 10 min incubation; the synthesis of Ag-AgCl NPs was indicated by color change and confirmed by UV-vis spectroscopic peak at 454 nm. TEM analysis confirmed Ag-AgCl NPs were 10–20 nm in size and spherical, and oval in shape. Elemental composition was determined by energy dispersive X-ray analysis, and crystalline structure was confirmed by X-ray diffraction spectroscopy. Different phytocomponents present in the plant extract were analyzed by Gas Chromatography-Mass spectrometry, and the interaction of biomolecules in reduction process was analyzed by Fourier transform infrared spectroscopy studies. The synthesized Ag-AgCl NPs showed significant antibacterial efficiency, analyzed by well diffusion assay against pathogenic bacteria including Bacillus cereus, Listeria monocytogenes, Staphylococcus aureus, Staphylococcus saprophyticus, Escherichia coli, Pseudomonas putida. Minimum inhibitory concentration and minimum bactericidal concentration were evaluated by microbroth dilution, and spread plate method, respectively. The possible mechanism of bacterial growth inhibition is due to changes in bacterial cell wall morphology that was studied by FE-SEM analysis.
