Search results for "Bioelectronics"

showing 3 items of 13 documents

Monitoring of Cell Layer Integrity with a Current-Driven Organic Electrochemical Transistor

2019

Abstract The integrity of CaCo-2 cell barriers is investigated by organic electrochemical transistors (OECTs) in a current-driven configuration. Ion transport through cellular barriers via the paracellular pathway is modulated by tight junctions between adjacent cells. Rupturing its integrity by H2O2 is monitored by the change of the output voltage in the transfer characteristics. It is demonstrated that by operating the OECT in a current-driven configuration, the sensitive and temporal resolution for monitoring the cell barrier integrity is strongly enhanced as compared to the OECT transient response measurement. As a result, current-driven OECTs are useful tools to assess dynamic and crit…

Materials scienceTransistors Electroniccell barriersBiomedical EngineeringPharmaceutical ScienceBiosensing Techniques02 engineering and technologybioelectronics010402 general chemistry01 natural scienceslaw.inventionBiomaterialslawElectrochemistryHumansTransient responseinvertersCell ShapeIon transporterBioelectronicsTight junctionbioelectronics; cell barriers; inverters; organic electrochemical transistors; toxicologybusiness.industryTransistorHydrogen Peroxide021001 nanoscience & nanotechnologyorganic electrochemical transistors0104 chemical sciencesParacellular transportOptoelectronicsCaco-2 Cells0210 nano-technologybusinesstoxicologyVoltageOrganic electrochemical transistor
researchProduct

From Microorganism-Based Amperometric Biosensors towards Microbial Fuel Cells

2021

This review focuses on the overview of microbial amperometric biosensors and microbial biofuel cells (MFC) and shows how very similar principles are applied for the design of both types of these bioelectronics-based devices. Most microorganism-based amperometric biosensors show poor specificity, but this drawback can be exploited in the design of microbial biofuel cells because this enables them to consume wider range of chemical fuels. The efficiency of the charge transfer is among the most challenging and critical issues during the development of any kind of biofuel cell. In most cases, particular redox mediators and nanomaterials are applied for the facilitation of charge transfer from a…

Microbial fuel cellBioelectric Energy SourcesPolymersMicroorganismNanotechnologyBiosensing TechniquesReview02 engineering and technologyyeastbioelectronicslcsh:Chemical technology010402 general chemistry01 natural sciencesBiochemistryRedoxAnalytical ChemistryNanomaterialsmicrobial biosensorslcsh:TP1-1185microbial biofuel cells ; yeast ; direct electron transfer ; extracellular electron transfer ; cell membrane/wall modifications ; conducting polymers ; enzyme-based biofuel cells ; bioelectronics ; microbial biosensors ; whole cell-based biosensorsdirect electron transferenzyme-based biofuel cellsElectrical and Electronic EngineeringElectrodesconducting polymersInstrumentationwhole cell-based biosensorsConductive polymerBioelectronicsextracellular electron transferChemistryfungitechnology industry and agriculturefood and beveragesmicrobial biofuel cells021001 nanoscience & nanotechnologyAtomic and Molecular Physics and Optics0104 chemical sciencescell membrane/wall modificationsBiofuel0210 nano-technologyOxidation-ReductionBiosensorSensors
researchProduct

Energy conversion from external fluctuating signals based on asymmetric nanopores

2015

Electrical transduction from fluctuating external signals is central to energy conversion based on nanoscale electrochemical devices and bioelectronics interfaces. We demonstrate theoretically and experimentally a significant energy transduction from white noise signals using the electrical rectification of asymmetric nanopores in polymeric membranes immersed in aqueous electrolyte solutions. Load capacitor voltages of the order of 1 V are obtained within times of the order of 1 min by means of nanofluidic diodes which convert zero time-average potentials of amplitudes of the order of 1 V into average net currents. We consider single-nanopore and multipore membranes to show that the convers…

NanoporeBioelectronicsMaterials scienceRenewable Energy Sustainability and the Environmentbusiness.industryElectrical rectificationNanotechnologyElectrolyteFluctuating signalCapacitanceEnergy conversionMembraneRectificationFISICA APLICADAOptoelectronicsEnergy transformationEquivalent circuitGeneral Materials ScienceElectrical and Electronic EngineeringbusinessDiode
researchProduct