Uniform gold spherical particles for single-particle surface-enhanced Raman spectroscopy

2013 ◽  
Vol 15 (12) ◽  
pp. 4130 ◽  
Author(s):  
Hai-Xin Lin ◽  
Jie-Ming Li ◽  
Bi-Ju Liu ◽  
De-Yu Liu ◽  
Jinxuan Liu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Particle ◽  
Particle Surface ◽  
Surface Enhanced Raman Spectroscopy ◽  
Spherical Particles ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Hollow transition metal hydroxide octahedral microcages for single particle surface-enhanced Raman spectroscopy

2019 ◽  
Vol 6 (9) ◽  
pp. 2318-2324 ◽  
Author(s):  
Mansha Gao ◽  
Peng Miao ◽  
Xijiang Han ◽  
Cheng Sun ◽  
Yan Ma ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Transition Metal ◽  
Single Particle ◽  
Particle Surface ◽  
Surface Enhanced Raman Spectroscopy ◽  
Metal Hydroxide ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Dye Molecule

Single M(OH)x (M = Fe, Co, Ni) hollow octahedral microcage particles are explored as novel SERS-active substrates for sensitive dye molecule detection.

scholarly journals Rapid Ultrasensitive Single Particle Surface-Enhanced Raman Spectroscopy Using Metallic Nanopores

Nano Letters ◽  
2013 ◽  
Vol 13 (10) ◽  
pp. 4602-4609 ◽  
Author(s):  
Michael P. Cecchini ◽  
Aeneas Wiener ◽  
Vladimir A. Turek ◽  
Hyangh Chon ◽  
Sangyeop Lee ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Particle ◽  
Particle Surface ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

scholarly journals Electrospray-Surface Enhanced Raman Spectroscopy (ES-SERS) for probing surface chemical compositions of atmospherically relevant particles

2017 ◽  
Author(s):  
Masao Gen ◽  
Chak K. Chan
Keyword(s):  
Raman Spectroscopy ◽  
Organic Matter ◽  
Particle Surface ◽  
Adsorbed Water ◽  
Surface Enhanced Raman Spectroscopy ◽  
Chemical Compositions ◽  
Surface Chemical ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Atmospherically Relevant

Abstract. We present electrospray-surface enhanced Raman spectroscopy (ES-SERS) as a new approach to measuring the surface chemical compositions of atmospherically relevant particles. The surface-sensitive SERS is realized by electrospraying Ag nanoparticle aerosols over analyte particles. Spectral features at v(SO42−), v(C-H) and v(O-H) modes were observed from the normal Raman and SERS measurements of laboratory-generated supermicron particles of ammonium sulfate (AS), AS mixed with succinic acid (AS/SA) and AS mixed with sucrose (AS/sucrose). SERS measurements showed strong interaction (or chemisorption) between Ag nanoparticles and surface aqueous sulfate [SO42−] with [SO42−]AS/sucrose > [SO42−]AS/SA > [SO42−]AS. Enhanced spectra of the solid AS and AS/SA particles revealed the formation of surface-adsorbed water on their surfaces at 60 % relative humidity. These observations of surface aqueous sulfate and adsorbed water demonstrate a possible role of surface-adsorbed water in facilitating the dissolution of sulfate from the bulk phase into its water layer(s). Submicron ambient aerosol particles collected in Hong Kong exhibited non-enhanced features of black carbon and enhanced features of sulfate and organic matter (carbonyl group), indicating an enrichment of sulfate and organic matter on the particle surface.

scholarly journals Surface-Enhanced Raman Spectroscopy of Dye and Thiol Molecules Adsorbed on Triangular Silver Nanostructures: A Study of Near-Field Enhancement, Localization of Hot-Spots, and Passivation of Adsorbed Carbonaceous Species

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Manuel R. Gonçalves ◽  
Fabian Enderle ◽  
Othmar Marti
Keyword(s):  
Raman Spectroscopy ◽  
Hot Spots ◽  
Near Field ◽  
Field Enhancement ◽  
Surface Enhanced Raman Spectroscopy ◽  
Spherical Particles ◽  
Silver Nanostructures ◽  
Dye Molecules ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Surface-enhanced Raman spectroscopy (SERS) of thiols and dye molecules adsorbed on triangular silver nanostructures was investigated. The SERS hot-spots are localized at the edges and corners of the silver triangular particles. AFM and SEM measurements permit to observe many small clusters formed at the edges of triangular particles fabricated by nanosphere lithography. Finite-element calculations show that near-field enhancements can reach values of more than 200 at visible wavelengths, in the gaps between small spherical particles and large triangular particles, although for the later no plasmon resonance was found at the wavelengths investigated. The regions near the particles showing strong near-field enhancement are well correlated with spatial localization of SERS hot-spots done by confocal microscopy. Silver nanostructures fabricated by thermal evaporation present strong and fast fluctuating SERS activity, due to amorphous carbon contamination. Thiols and dye molecules seem to be able to passivate the undesired SERS activity on fresh evaporated silver.

Monitoring plasmon-driven surface catalyzed reactions in situ using time-dependent surface-enhanced Raman spectroscopy on single particles of hierarchical peony-like silver microflowers

Nanoscale ◽  
2014 ◽  
Vol 6 (15) ◽  
pp. 8612-8616 ◽  
Author(s):  
Xianghu Tang ◽  
Wenya Cai ◽  
Liangbao Yang ◽  
Jinhuai Liu
Keyword(s):  
Raman Spectroscopy ◽  
Single Particle ◽  
Surface Enhanced Raman Spectroscopy ◽  
Time Dependent ◽  
Single Particles ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Catalyzed Reactions ◽  
Kinetics Of

The kinetics of the reaction of 4-NTP dimerizing into DMAB was investigated and comparative studied using a SERS technique on a single particle.

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