Multiple depositions of Ag nanoparticles on chemically modified agarose films for surface-enhanced Raman spectroscopy

Nanoscale ◽  
2012 ◽  
Vol 4 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Wen-Lei Zhai ◽  
Da-Wei Li ◽  
Lu-Lu Qu ◽  
John S. Fossey ◽  
Yi-Tao Long
Keyword(s):  
Raman Spectroscopy ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Chemically Modified ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Close-packed assemblies of discrete tiny silver nanoparticles on triangular gold nanoplates as a high performance SERS probe

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94849-94854 ◽  
Author(s):  
Youju Huang ◽  
Palanisamy Kannan ◽  
Lei Zhang ◽  
Yun Rong ◽  
Liwei Dai ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Ag Nanoparticles ◽  
High Performance ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

An island like array of tiny Ag nanoparticles bounded on triangular Au nanoplates was synthesized as surface-enhanced Raman spectroscopy substrate.

scholarly journals Highly Sensitive Surface Enhanced Raman Spectroscopy from Ag Nanoparticles Decorated Graphene Sheet

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Hui Song ◽  
Xin Li ◽  
Sweejiang Yoo ◽  
Yuan Wu ◽  
Weihua Liu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Size Distribution ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Ag Nps ◽  
Sers Enhancement ◽  
Surface Enhanced ◽  
Enhancement Factors ◽  
Surface Enhanced Raman

Surface enhanced Raman spectroscopy (SERS) is a powerful analytical technique and has been most intensively studied. In this work, electroless deposition is proposed for Ag nanoparticles (NPs) decorated on chemical vapor deposition (CVD) growth graphene sheets (GS) to create hybrid SERS substrate. From three aspects of size distribution, morphology, and coverage, Ag NPs controllable decoration on GS and SERS enhancement factors of the hybrid SERS substrate is investigated. 200–300 times enhanced SERS intensities are detected from the Ag NPs on GS hybrid as compared to pure GS. Controllable decoration is crucial for improving SERS enhancement factorsβEF, becauseβEFfrom quasi cubic Ag NPs on GS is 6.53 times stronger than that from spheric one; 1.6 timesβEFis detected while the Ag NPs size distribution is reduced to half, and when the coverage is doubled,βEFis nearly doubled. This controllable Ag NPs/GS hybrid is capable of serving as a high performance SERS substrate for efficient chemical and biological sensing applications.

Surface-enhanced Raman spectroscopy on porous silicon membranes decorated with Ag nanoparticles integrated in elastomeric microfluidic chips

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 21865-21870 ◽  
Author(s):  
Chiara Novara ◽  
Andrea Lamberti ◽  
Alessandro Chiadò ◽  
Alessandro Virga ◽  
Paola Rivolo ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Porous Silicon ◽  
Microfluidic Chip ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Microfluidic Chips ◽  
Label Free ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Silicon Membranes

An elastomeric microfluidic chip integrating SERS active silver-coated porous silicon membranes is developed, which performs label free and calibrated SERS analysis in a multi-analyte configuration.

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