Immobilization of Cubic Silver Plasmonic Nanoparticles on TiO<sub>2</sub> Nanotubes, Reducing the Coffee Ring Effect in Surface-Enhanced Raman Spectroscopy Applications
Robert Ambroziak, Jan Krajczewski, Marcin Pisarek, Andrzej Kudelski
Abstract
NTs, such as wettability. The wettability of the prepared samples was determined by measuring the static water contact angle (WCA), and the chemical composition near the boundary of the drying area was studied using Auger electron spectroscopy. The morphology of the substrates obtained was characterized using scanning electron microscopy. Our studies showed that reducing the coffee ring effect increased the spatial reproducibility of the measured SERS signal in the area of the deposited CNPs. Therefore, the platforms obtained may be very useful in commercial SERS applications.
Topics & Concepts
Raman spectroscopyMaterials scienceContact angleWettingAuger electron spectroscopyScanning electron microscopeNanoparticleSurface-enhanced Raman spectroscopyNanotechnologyChemical engineeringNanostructureSilver nanoparticleAnalytical Chemistry (journal)Raman scatteringChemistryComposite materialOpticsOrganic chemistryNuclear physicsEngineeringPhysicsGold and Silver Nanoparticles Synthesis and ApplicationsNanomaterials and Printing TechnologiesBiosensors and Analytical Detection