Label-free selective detection of coralyne due to aptamer–coralyne interaction using DNA modified SiO2@Au core–shell nanoparticles as an effective SERS substrate

2013 ◽  
Vol 5 (16) ◽  
pp. 3927 ◽  
Author(s):  
Yilin Lu ◽  
Qing Huang
Keyword(s):  
Core Shell ◽  
Sers Substrate ◽  
Selective Detection ◽  
Label Free ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Rational synthesis of hollow cubic CuS@Spiky Au core–shell nanoparticles for enhanced photothermal and SERS effects

2018 ◽  
Vol 54 (95) ◽  
pp. 13399-13402 ◽  
Author(s):  
Qian Lv ◽  
Meng-Yue Gao ◽  
Zi-He Cheng ◽  
Qiao Chen ◽  
Ai-Guo Shen ◽  
...  
Keyword(s):  
Cell Apoptosis ◽  
Photothermal Effect ◽  
Core Shell ◽  
Label Free ◽  
Shell Nanoparticles ◽  
Intracellular Imaging ◽  
Core Shell Nanoparticles

The unique “tip spots” can simultaneously enhance SERS and the photothermal effect, facilitating label-free SERS intracellular imaging during cell apoptosis.

scholarly journals Performance Improving Method of Aligned Silver Nanorod by Grafting Au@Ag Core–Shell Nanoparticles for Surface-Enhanced Raman Scattering

NANO ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. 1750131 ◽  
Author(s):  
Jian Chen ◽  
Peitao Dong ◽  
Chaoguang Wang ◽  
Chenyu Zhang ◽  
Junfeng Wang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Core Shell ◽  
Sers Substrate ◽  
Shell Nanoparticles ◽  
Simple Method ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Core Shell Nanoparticles

A simple method for improving surface-enhanced Raman scattering (SERS) performance of aligned silver nanorod (Ag NR) array was investigated. This method was to construct a kind of hybrid substrate by grafting Au@Ag core–shell nanoparticles (NPs) into Ag NR array using poly(2-vinylphridine) (P2VPy) as a bridging agent. The hybrid substrate yielded excellent SERS performance as its detection limit improved from 10[Formula: see text] M to 10[Formula: see text] M using trans-1,2-bis(4-pyridyl)ethylene (BPE) as probe molecule, which was increased by two orders of magnitude compared with Ag NR array substrate. The significant improvement of SERS performance of Ag NR arrays was attributed to the addition of Au@Ag core–shell NPs. As a result of surface plasmon resonance generated by the interaction of electromagnetic (EM) (IAEM) filed between NP and NR structures, increasing hotspots were found at the connections of NPs and NRs, the gaps of adjacent rods, and the gaps of two particles consequently. These results were validated by the finite difference time domain (FDTD) calculation. Besides, hybrid substrate shows good performance in stability and reproducibility. The proposed method was simple and robust, which promoted SERS performance of Ag NR array effectively, showing great potential in the application of SERS substrate fabrication and SERS-based bio-chemical sensing.

Preparation of a monolayer array of silica@gold core-shell nanoparticles as a SERS substrate

Optik ◽  
2020 ◽  
Vol 221 ◽  
pp. 165274
Author(s):  
Ciyong Gu ◽  
Shi-Qing Man ◽  
Junqi Tang ◽  
Zhimin Zhao ◽  
Zhenlu Liu ◽  
...  
Keyword(s):  
Core Shell ◽  
Sers Substrate ◽  
Shell Nanoparticles ◽  
Gold Core ◽  
Core Shell Nanoparticles

β-Cyclodextrin coated SiO2@Au@Ag core–shell nanoparticles for SERS detection of PCBs

2015 ◽  
Vol 17 (33) ◽  
pp. 21149-21157 ◽  
Author(s):  
Yilin Lu ◽  
Guohua Yao ◽  
Kexi Sun ◽  
Qing Huang
Keyword(s):  
Ag Nanoparticles ◽  
Core Shell ◽  
Sers Substrate ◽  
Shell Nanoparticles ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Sers Detection ◽  
New Type ◽  
Enhanced Raman Scattering ◽  
Core Shell Nanoparticles

A new type of surface-enhanced Raman scattering (SERS) substrate consisting of β-cyclodextrin (β-CD) coated SiO2@Au@Ag nanoparticles (SiO2@Au@Ag@CD NPs) has been achieved.

Study on the SERS substrate composed of Au@Ag core-shell nanoparticles linked to SiO2 spheres

2017 ◽  
Vol 47 (9) ◽  
pp. 1283-1289
Author(s):  
Huiyun Wu ◽  
Xin Li ◽  
Jiawen Xu ◽  
Congwen Wang ◽  
Zhen Rong ◽  
...  
Keyword(s):  
Core Shell ◽  
Sers Substrate ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Sio2 Spheres
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