High-Density Silver Nanoparticle Film with Temperature-Controllable Interparticle Spacing for a Tunable Surface Enhanced Raman Scattering Substrate

Nano Letters ◽  
2005 ◽  
Vol 5 (1) ◽  
pp. 5-9 ◽  
Author(s):  
Yu Lu ◽  
Gang L. Liu ◽  
Luke P. Lee
The Analyst ◽  
2014 ◽  
Vol 139 (20) ◽  
pp. 5283-5289 ◽  
Author(s):  
Zhengjun Gong ◽  
Canchen Wang ◽  
Cong Wang ◽  
Changyu Tang ◽  
Fansheng Cheng ◽  
...  

A surface enhanced Raman scattering (SERS) hydrogel substrate, capable of extracting small amounts of organic species from surfaces of different types of materials with variable roughness, has been fabricated.


Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14220-14229 ◽  
Author(s):  
Weidong Zhao ◽  
Shuyuan Xiao ◽  
Yuxian Zhang ◽  
Dong Pan ◽  
Jiahui Wen ◽  
...  

The BISA with high-density hot spots as reproducible SERS substrates by combining an opal structure with self-assembled monolayer AuNPs is demonstrated.


2019 ◽  
Vol 73 (6) ◽  
pp. 665-677 ◽  
Author(s):  
Raymond A. Velez ◽  
Nickolay V. Lavrik ◽  
Ivan I. Kravchenko ◽  
Michael J. Sepaniak ◽  
Marco A. De Jesus

The use of nanomachining methods capable of reproducible construction of nano-arrayed devices have revolutionized the field of plasmonic sensing by the introduction of a diversity of rationally engineered designs. Significant strides have been made to fabricate plasmonic platforms with tailored interparticle gaps to improve their performance for surface-enhanced Raman scattering (SERS) applications. Over time, a dichotomy has emerged in the implementation of SERS for analytical applications, the construction of substrates, optimization of interparticle spacing as a means to optimize electromagnetic field enhancement at the localized surface plasmon level, and the substrate sensitivity over extended areas to achieve quantitative performance. This work assessed the enhancement factor of plasmonic Ag/SiO2/Si disc-on-pillar (DOP) arrays of variable pitch with its analytical performance for quantitative applications. Experimental data were compared with those from finite-difference time-domain (FDTD) simulations used in the optimization of the array dimensions. A self-assembled monolayer (SAM) of benzenethiol rendered highly reproducible signals (RSD ∼4–10%) and SERS substrate enhancement factor (SSEF) values in the orders of 106–108 for all pitches. Spectra corresponding to rhodamine 6G (R6G) and 4-aminobenzoic acid demonstrated the advantages of using the more densely packed DOP arrays with a 160 nm pitch (gap = 40 nm) for quantitation in spite of the strongest SSEF was attained for a pitch of 520 nm corresponding to a 400 nm gap.


2002 ◽  
Vol 106 (28) ◽  
pp. 7076-7080 ◽  
Author(s):  
Sung Jin Bae ◽  
Chung-ro Lee ◽  
Insung S. Choi ◽  
Cheong-Soo Hwang ◽  
Myoung-seon Gong ◽  
...  

2014 ◽  
Vol 45 (9) ◽  
pp. 730-735 ◽  
Author(s):  
Ekaterina Vinogradova ◽  
Alfredo Tlahuice-Flores ◽  
J. Jesus Velazquez-Salazar ◽  
Eduardo Larios-Rodriguez ◽  
Miguel Jose-Yacaman

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