Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms
Bioelectrochemistry. 2023 Sep 28;155:108581. doi: 10.1016/j.bioelechem.2023.108581. Online ahead of print.ABSTRACTPeriodic polarization can improve the performance of anodic electroactive biofilms (EABs). The impact of the half-period duration was previously investigated at constant duty cycle (50%), i.e., the proportion of a period during which the electrode is polarized. Here, we cultured eight EABs on glassy carbon electrodes at four different duty cycles (50%, 67%, 80% and 91%) by varying the time interval under open circuit conditions, while keeping the polarization duration at 10 s. The shorter duty cycles slightly s...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Xu Zhang Amanda K Luther Korneel Rabaey Antonin Pr évoteau Source Type: research
A graphitized carbon@boron carbide-mediated laccase-based amperometric biosensor for epinephrine detection
Bioelectrochemistry. 2023 Oct 21;155:108591. doi: 10.1016/j.bioelechem.2023.108591. Online ahead of print.ABSTRACTThe development of novel electron transfer mediator is important for laccase-based electrochemical biosensors. Here, graphitized carbon coated boron carbide (GC@B4C) was first used as the mediator to transfer electrons from laccase (Lac) to nickel foam (NF) electrode. The GC shell of GC@B4C particles was characterized and confirmed by HRTEM, XRD and Raman spectroscopy. The fabricated Lac/GC@B4C/NF electrode was applied for amperometric detection of epinephrine (EP). Detection results indicated Lac/GC@B4C/NF ele...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Huanyu Tang Mingyue Cui Miaorong Zhang Yan Zhang Source Type: research
Electromechanical interactions between cell membrane and nuclear envelope: Beyond the standard Schwan's model of biological cells
Bioelectrochemistry. 2023 Oct 4;155:108583. doi: 10.1016/j.bioelechem.2023.108583. Online ahead of print.ABSTRACTWe investigate little-appreciated features of the hierarchical core-shell (CS) models of the electrical, mechanical, and electromechanical interactions between the cell membrane (CM) and nuclear envelope (NE). We first consider a simple model of an individual cell based on a coupled resistor-capacitor (Schwan model (SM)) network and show that the CM, when exposed to ac electric fields, acts as a low pass filter while the NE acts as a wide and asymmetric bandpass filter. We provide a simplified calculation for ch...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Elias Sabri Christian Brosseau Source Type: research
Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms
Bioelectrochemistry. 2023 Sep 28;155:108581. doi: 10.1016/j.bioelechem.2023.108581. Online ahead of print.ABSTRACTPeriodic polarization can improve the performance of anodic electroactive biofilms (EABs). The impact of the half-period duration was previously investigated at constant duty cycle (50%), i.e., the proportion of a period during which the electrode is polarized. Here, we cultured eight EABs on glassy carbon electrodes at four different duty cycles (50%, 67%, 80% and 91%) by varying the time interval under open circuit conditions, while keeping the polarization duration at 10 s. The shorter duty cycles slightly s...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Xu Zhang Amanda K Luther Korneel Rabaey Antonin Pr évoteau Source Type: research
A graphitized carbon@boron carbide-mediated laccase-based amperometric biosensor for epinephrine detection
Bioelectrochemistry. 2023 Oct 21;155:108591. doi: 10.1016/j.bioelechem.2023.108591. Online ahead of print.ABSTRACTThe development of novel electron transfer mediator is important for laccase-based electrochemical biosensors. Here, graphitized carbon coated boron carbide (GC@B4C) was first used as the mediator to transfer electrons from laccase (Lac) to nickel foam (NF) electrode. The GC shell of GC@B4C particles was characterized and confirmed by HRTEM, XRD and Raman spectroscopy. The fabricated Lac/GC@B4C/NF electrode was applied for amperometric detection of epinephrine (EP). Detection results indicated Lac/GC@B4C/NF ele...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Huanyu Tang Mingyue Cui Miaorong Zhang Yan Zhang Source Type: research
Electromechanical interactions between cell membrane and nuclear envelope: Beyond the standard Schwan's model of biological cells
Bioelectrochemistry. 2023 Oct 4;155:108583. doi: 10.1016/j.bioelechem.2023.108583. Online ahead of print.ABSTRACTWe investigate little-appreciated features of the hierarchical core-shell (CS) models of the electrical, mechanical, and electromechanical interactions between the cell membrane (CM) and nuclear envelope (NE). We first consider a simple model of an individual cell based on a coupled resistor-capacitor (Schwan model (SM)) network and show that the CM, when exposed to ac electric fields, acts as a low pass filter while the NE acts as a wide and asymmetric bandpass filter. We provide a simplified calculation for ch...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Elias Sabri Christian Brosseau Source Type: research
Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms
Bioelectrochemistry. 2023 Sep 28;155:108581. doi: 10.1016/j.bioelechem.2023.108581. Online ahead of print.ABSTRACTPeriodic polarization can improve the performance of anodic electroactive biofilms (EABs). The impact of the half-period duration was previously investigated at constant duty cycle (50%), i.e., the proportion of a period during which the electrode is polarized. Here, we cultured eight EABs on glassy carbon electrodes at four different duty cycles (50%, 67%, 80% and 91%) by varying the time interval under open circuit conditions, while keeping the polarization duration at 10 s. The shorter duty cycles slightly s...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Xu Zhang Amanda K Luther Korneel Rabaey Antonin Pr évoteau Source Type: research
A graphitized carbon@boron carbide-mediated laccase-based amperometric biosensor for epinephrine detection
Bioelectrochemistry. 2023 Oct 21;155:108591. doi: 10.1016/j.bioelechem.2023.108591. Online ahead of print.ABSTRACTThe development of novel electron transfer mediator is important for laccase-based electrochemical biosensors. Here, graphitized carbon coated boron carbide (GC@B4C) was first used as the mediator to transfer electrons from laccase (Lac) to nickel foam (NF) electrode. The GC shell of GC@B4C particles was characterized and confirmed by HRTEM, XRD and Raman spectroscopy. The fabricated Lac/GC@B4C/NF electrode was applied for amperometric detection of epinephrine (EP). Detection results indicated Lac/GC@B4C/NF ele...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Huanyu Tang Mingyue Cui Miaorong Zhang Yan Zhang Source Type: research
Electromechanical interactions between cell membrane and nuclear envelope: Beyond the standard Schwan's model of biological cells
Bioelectrochemistry. 2023 Oct 4;155:108583. doi: 10.1016/j.bioelechem.2023.108583. Online ahead of print.ABSTRACTWe investigate little-appreciated features of the hierarchical core-shell (CS) models of the electrical, mechanical, and electromechanical interactions between the cell membrane (CM) and nuclear envelope (NE). We first consider a simple model of an individual cell based on a coupled resistor-capacitor (Schwan model (SM)) network and show that the CM, when exposed to ac electric fields, acts as a low pass filter while the NE acts as a wide and asymmetric bandpass filter. We provide a simplified calculation for ch...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Elias Sabri Christian Brosseau Source Type: research
Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms
Bioelectrochemistry. 2023 Sep 28;155:108581. doi: 10.1016/j.bioelechem.2023.108581. Online ahead of print.ABSTRACTPeriodic polarization can improve the performance of anodic electroactive biofilms (EABs). The impact of the half-period duration was previously investigated at constant duty cycle (50%), i.e., the proportion of a period during which the electrode is polarized. Here, we cultured eight EABs on glassy carbon electrodes at four different duty cycles (50%, 67%, 80% and 91%) by varying the time interval under open circuit conditions, while keeping the polarization duration at 10 s. The shorter duty cycles slightly s...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Xu Zhang Amanda K Luther Korneel Rabaey Antonin Pr évoteau Source Type: research
A graphitized carbon@boron carbide-mediated laccase-based amperometric biosensor for epinephrine detection
Bioelectrochemistry. 2023 Oct 21;155:108591. doi: 10.1016/j.bioelechem.2023.108591. Online ahead of print.ABSTRACTThe development of novel electron transfer mediator is important for laccase-based electrochemical biosensors. Here, graphitized carbon coated boron carbide (GC@B4C) was first used as the mediator to transfer electrons from laccase (Lac) to nickel foam (NF) electrode. The GC shell of GC@B4C particles was characterized and confirmed by HRTEM, XRD and Raman spectroscopy. The fabricated Lac/GC@B4C/NF electrode was applied for amperometric detection of epinephrine (EP). Detection results indicated Lac/GC@B4C/NF ele...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Huanyu Tang Mingyue Cui Miaorong Zhang Yan Zhang Source Type: research
Electromechanical interactions between cell membrane and nuclear envelope: Beyond the standard Schwan's model of biological cells
Bioelectrochemistry. 2023 Oct 4;155:108583. doi: 10.1016/j.bioelechem.2023.108583. Online ahead of print.ABSTRACTWe investigate little-appreciated features of the hierarchical core-shell (CS) models of the electrical, mechanical, and electromechanical interactions between the cell membrane (CM) and nuclear envelope (NE). We first consider a simple model of an individual cell based on a coupled resistor-capacitor (Schwan model (SM)) network and show that the CM, when exposed to ac electric fields, acts as a low pass filter while the NE acts as a wide and asymmetric bandpass filter. We provide a simplified calculation for ch...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Elias Sabri Christian Brosseau Source Type: research
Periodic polarization duty cycle tunes performance and adhesion of anodic electroactive biofilms
Bioelectrochemistry. 2023 Sep 28;155:108581. doi: 10.1016/j.bioelechem.2023.108581. Online ahead of print.ABSTRACTPeriodic polarization can improve the performance of anodic electroactive biofilms (EABs). The impact of the half-period duration was previously investigated at constant duty cycle (50%), i.e., the proportion of a period during which the electrode is polarized. Here, we cultured eight EABs on glassy carbon electrodes at four different duty cycles (50%, 67%, 80% and 91%) by varying the time interval under open circuit conditions, while keeping the polarization duration at 10 s. The shorter duty cycles slightly s...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Xu Zhang Amanda K Luther Korneel Rabaey Antonin Pr évoteau Source Type: research
A graphitized carbon@boron carbide-mediated laccase-based amperometric biosensor for epinephrine detection
Bioelectrochemistry. 2023 Oct 21;155:108591. doi: 10.1016/j.bioelechem.2023.108591. Online ahead of print.ABSTRACTThe development of novel electron transfer mediator is important for laccase-based electrochemical biosensors. Here, graphitized carbon coated boron carbide (GC@B4C) was first used as the mediator to transfer electrons from laccase (Lac) to nickel foam (NF) electrode. The GC shell of GC@B4C particles was characterized and confirmed by HRTEM, XRD and Raman spectroscopy. The fabricated Lac/GC@B4C/NF electrode was applied for amperometric detection of epinephrine (EP). Detection results indicated Lac/GC@B4C/NF ele...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Huanyu Tang Mingyue Cui Miaorong Zhang Yan Zhang Source Type: research
Electromechanical interactions between cell membrane and nuclear envelope: Beyond the standard Schwan's model of biological cells
Bioelectrochemistry. 2023 Oct 4;155:108583. doi: 10.1016/j.bioelechem.2023.108583. Online ahead of print.ABSTRACTWe investigate little-appreciated features of the hierarchical core-shell (CS) models of the electrical, mechanical, and electromechanical interactions between the cell membrane (CM) and nuclear envelope (NE). We first consider a simple model of an individual cell based on a coupled resistor-capacitor (Schwan model (SM)) network and show that the CM, when exposed to ac electric fields, acts as a low pass filter while the NE acts as a wide and asymmetric bandpass filter. We provide a simplified calculation for ch...
Source: Bioelectrochemistry - October 26, 2023 Category: Biochemistry Authors: Elias Sabri Christian Brosseau Source Type: research
