Search results for "Rectifying properties"

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Single cigar-shaped nanopores functionalized with amphoteric amino acid chains: experimental and theoretical characterization.

2012

We present an experimental and theoretical characterization of single cigar-shaped nanopores with pH-responsive carboxylic acid and lysine chains functionalized on the pore surface. The nanopore characterization includes (i) optical images of the nanostructure obtained by FESEM; (ii) different chemical procedures for the nanopore preparation (etching time and functionalizations; pH and electrolyte concentration of the external solution) allowing externally tunable nanopore responses monitored by the current-voltage (I-V) curves; and (iii) transport simulations obtained with a multilayer nanopore model. We show that a single, approximately symmetric nanopore can be operated as a reconfigurab…

NanoporeRe-configurablePHAmino acid chainsEtching timeElectrical signalCarboxylic AcidsGeneral Physics and AstronomyFunctionalizationsElectrolytePore surfaceElectrochemistryFunctionalizedCarboxylic acidOptical imageNanoporesElectric conductivityI - V curveElectrochemistryGeneral Materials ScienceTheoretical modelRectifying behaviorsFundamental conceptsRectifying propertiesSurface propertyGeneral EngineeringHydrogen-Ion ConcentrationCigar-shaped nanoporeCharacterization (materials science)Data processingChemistryNanoporeAmino acidsIon channelTransport simulationIodineLogic functionsNanostructureMaterials scienceLogicSurface PropertiesCharacterizationNanotechnologyTunabilitiesArticleDrug controlled releaseElectrical resistivity and conductivityEtchingTransport processPH-responsiveCurrent voltage curveDiodeChemical proceduresCarboxylic acidsLysineElectric ConductivityModels TheoreticalGeometrical opticsNanostructuresAmphoteric amino acid chainsCurrent-voltage curvesExternal solutionsFISICA APLICADAElectrolyte concentrationACS nano
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