0000000001054384

AUTHOR

Aiwen Zhang

showing 2 related works from this author

Synergistic enhancement via plasmonic nanoplate-bacteria-nanorod supercrystals for highly efficient SERS sensing of food-borne bacteria

2017

Bio-sensing techniques utilizing metallic nanoparticles as a probe have gained more and more attention and play today an important role in the detection of bacteria. To date, although several sensing materials have been tested, there is still a long way to go to achieve a fast, low-cost, ultrasensitive and multifunctional substrate suitable for a universal biosensor for detection of bacterial cells. Here, we report a novel probe design based on anisotropic plasmonic nanoparticles organized to a biocompatible 3D bio-inorganic scaffold, i.e., nanoplate-bacteria-nanorod supercrystals (NBNS) with extremely high surface-enhanced Raman spectroscopic (SERS) activity as a model of synergistic plasm…

assemblyMaterials scienceta221NanoparticleNanotechnology02 engineering and technologyrecognition of microbes010402 general chemistry01 natural sciencesBiokemia solu- ja molekyylibiologia - Biochemistry cell and molecular biologybakteeritsymbols.namesakeNanoteknologia - NanotechnologyMaterials ChemistryKemia - Chemical sciencesElectrical and Electronic EngineeringbacteriaInstrumentationPlasmonPlasmonic nanoparticlesmikrobien tunnistaminenta114SERSMetals and AlloysSubstrate (chemistry)021001 nanoscience & nanotechnologyCondensed Matter Physicschemometrics0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialsasymmetric nanoparticlessymbolsnanoparticlesNanorodnanopartikkelit0210 nano-technologyRaman spectroscopyBiosensorRaman scattering
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Core–Shell Nanorod Columnar Array Combined with Gold Nanoplate–Nanosphere Assemblies Enable Powerful In Situ SERS Detection of Bacteria

2016

Development of a label-free ultrasensitive nanosensor for detection of bacteria is presented. Sensitive assay for Gram-positive bacteria was achieved via electrostatic attraction-guided plasmonic bifacial superstructure/bacteria/columnar array assembled in one step. Dynamic optical hotspots were formed in the hybridized nanoassembly under wet-dry critical state amplifying efficiently the weak vibrational modes of three representative food-borne Gram-positive bacteria, that is, Staphylococcus xylosus, Listeria monocytogenes, and Enterococcus faecium. These three bacteria with highly analogous Raman spectra can be effectively differentiated through droplet wet-dry critical SERS approach combi…

In situMaterials scienceGram-positive bacteriata221Nanotechnology02 engineering and technologySpectrum Analysis Raman010402 general chemistry01 natural sciencessymbols.namesakeNanosensorGeneral Materials Scienceta318PlasmonNanotubesbiology3D PCASERSStaphylococcus xylosusGram-positive bacteria021001 nanoscience & nanotechnologybiology.organism_classificationListeria monocytogenesnanoarray0104 chemical sciencessymbolsNanorodGoldsuperstructure0210 nano-technologyRaman spectroscopyNanospheresBacteriaACS Applied Materials and Interfaces
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