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Metal alloy solid-state nanopores for single nanoparticle detection
journal contribution
posted on 2018-05-14, 00:00 authored by Diego Coglitore, Andrea Merenda, Nicoletta Giamblanco, Ludovic Dumee, Jean-Marc Janot, Sébastien BalmeSolid-state nanopore technology for nanoparticle sensing is considered for the development of analytical tools to characterise their size, shape or zeta potential. In this field, it is crucial to understand how the nanopore inner surface influences the dynamic of nanoparticle translocation. Here, three single nanopores directly drilled in metal alloys (titanium nitride, titanium-tantalum and tantalum) are considered. The translocation of polystyrene nanoparticles coated with ssDNA is investigated by the resistive pulse method at different concentrations and voltages. The results show that the nanoparticle energy barrier for entrance into the pore decreases for nanopores that exhibits a higher surface energy and hydrophilicity, while the dwell time is found to depend on the nanopore surface state. Overall, this study demonstrates that the control of nanopore surface state must be taken into account for the resistive pulse experiments for nanoparticle detection.
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Journal
Physical chemistry chemical physicsVolume
20Issue
18Pagination
12799 - 12807Publisher
Royal Society of ChemistryLocation
Cambridge, Eng.Publisher DOI
eISSN
1463-9084Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2018, the Owner SocietiesUsage metrics
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No categories selectedKeywords
solid-state nanoporesnanoparticle detectionnanopore technologynanoparticle sensingssDNAScience & TechnologyPhysical SciencesChemistry, PhysicalPhysics, Atomic, Molecular & ChemicalChemistryPhysicsMOLECULE MASS-SPECTROMETRYHIGH-ASPECT-RATIOCURRENT RECTIFICATIONARTIFICIAL NANOPORETHIN-FILMSTRANSPORTDNATRANSLOCATIONMEMBRANESILICON
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