Ultrasensitive SERS detection of specific oligonucleotides based on Au@AgAg bimetallic nanorods

The Analyst ◽  
2019 ◽  
Vol 144 (9) ◽  
pp. 2929-2935 ◽  
Author(s):  
Cui-Fang Ning ◽  
Ya-Fei Tian ◽  
Wen Zhou ◽  
Bin-Cheng Yin ◽  
Bang-Ce Ye
Keyword(s):  
Core Shell ◽  
Sers Detection ◽  
Bimetallic Nanorods

We synthesized a novel and sensitive Au/Ag bimetallic SERS-active nanotag, Au–Ag–Ag core–shell–shell nanorod (Au@AgAgNR).

Rapid SERS detection of acid orange II and brilliant blue in food by using Fe3O4@Au core–shell substrate

2019 ◽  
Vol 270 ◽  
pp. 173-180 ◽  
Author(s):  
Yunfei Xie ◽  
Ting Chen ◽  
Yahui Guo ◽  
Yuliang Cheng ◽  
He Qian ◽  
...  
Keyword(s):  
Brilliant Blue ◽  
Core Shell ◽  
Orange Ii ◽  
Acid Orange ◽  
Sers Detection ◽  
Acid Orange Ii

scholarly journals Core-shell of FePt@SiO2-Au magnetic nanoparticles for rapid SERS detection

2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Andri Hardiansyah ◽  
An-Yu Chen ◽  
Hung-Liang Liao ◽  
Ming-Chien Yang ◽  
Ting-Yu Liu ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Core Shell ◽  
Sers Detection

Plasmonic core–shell nanoparticles for SERS detection of the pesticide thiram: size- and shape-dependent Raman enhancement

Nanoscale ◽  
2015 ◽  
Vol 7 (7) ◽  
pp. 2862-2868 ◽  
Author(s):  
Pengzhen Guo ◽  
Debabrata Sikdar ◽  
Xiqiang Huang ◽  
Kae Jye Si ◽  
Wei Xiong ◽  
...  
Keyword(s):  
Core Shell ◽  
Shell Nanoparticles ◽  
Size And Shape ◽  
Raman Enhancement ◽  
Sers Detection ◽  
Core Shell Nanoparticles

scholarly journals Assessing Plasmonic Nanoprobes in Electromagnetic Field Enhancement for SERS Detection of Biomarkers

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8345
Author(s):  
Han-Wen Cheng ◽  
Shu-Yan Xue ◽  
Jing Li ◽  
Justine S. Gordon ◽  
Shan Wang ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Field Enhancement ◽  
Surface Enhanced Raman Spectroscopy ◽  
Magnetic Core ◽  
Interparticle Spacing ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Gold Shell ◽  
Sers Detection ◽  
Detection Of Biomarkers

The exploration of the plasmonic field enhancement of nanoprobes consisting of gold and magnetic core@gold shell nanoparticles has found increasing application for the development of surface-enhanced Raman spectroscopy (SERS)-based biosensors. The understanding of factors controlling the electromagnetic field enhancement, as a result of the plasmonic field enhancement of the nanoprobes in SERS biosensing applications, is critical for the design and preparation of the optimal nanoprobes. This report describes findings from theoretical calculations of the electromagnetic field intensity of dimer models of gold and magnetic core@gold shell nanoparticles in immunoassay SERS detection of biomarkers. The electromagnetic field intensities for a series of dimeric nanoprobes with antibody–antigen–antibody binding defined interparticle distances were examined in terms of nanoparticle sizes, core–shell sizes, and interparticle spacing. The results reveal that the electromagnetic field enhancement not only depended on the nanoparticle size and the relative core size and shell thicknesses of the magnetic core@shell nanoparticles but also strongly on the interparticle spacing. Some of the dependencies are also compared with experimental data from SERS detection of selected cancer biomarkers, showing good agreement. The findings have implications for the design and optimization of functional nanoprobes for SERS-based biosensors.

Core–Shell Nanorod Columnar Array Combined with Gold Nanoplate–Nanosphere Assemblies Enable Powerful In Situ SERS Detection of Bacteria

2016 ◽  
Vol 8 (37) ◽  
pp. 24394-24403 ◽  
Author(s):  
Li Qiu ◽  
WeiQiang Wang ◽  
AiWen Zhang ◽  
NanNan Zhang ◽  
Tibebe Lemma ◽  
...  
Keyword(s):  
Core Shell ◽  
Sers Detection

Sharp-featured Au@Ag core/shell nanocuboid synthesis and the label-free ultrasensitive SERS detection of protein single-point mutations

2018 ◽  
Vol 2 (9) ◽  
pp. 1720-1724 ◽  
Author(s):  
Guopeng Tu ◽  
Ntirikwendera Deogratias ◽  
Meng Xu ◽  
Xiaowei Li ◽  
Jiajia Liu ◽  
...  
Keyword(s):  
Single Point ◽  
Point Mutations ◽  
Core Shell ◽  
Label Free ◽  
Sers Detection ◽  
Single Point Mutations

Sharp-featured Au@Ag core/shell nanocuboids were synthesized.

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.

Sign in / Sign up

Export Citation Format

Share Document