Fabrication of Fe3O4@SiO2@Ag magnetic–plasmonic nanospindles as highly efficient SERS active substrates for label-free detection of pesticides

2017 ◽  
Vol 41 (4) ◽  
pp. 1582-1590 ◽  
Author(s):  
Qinye He ◽  
Aiwu Zhao ◽  
Lei Li ◽  
Henghui Sun ◽  
Dapeng Wang ◽  
...  
Keyword(s):  
Hot Spots ◽  
Label Free ◽  
Sers Substrates ◽  
Highly Efficient ◽  
Label Free Detection

Magnetic–plasmonic nanospindles serve as SERS substrates with controllable aggregation due to steady enrichment of mass molecules nearby abundant hot spots.

Nanocomposite Route to Ultra-sensitive Surface Enhanced Raman Scattering Substrates

2010 ◽  
Vol 1253 ◽  
Author(s):  
Abhijit Biswas ◽  
Ilker Bayer ◽  
Alexandru S. Biris
Keyword(s):  
Hot Spots ◽  
Direct Detection ◽  
Single Step ◽  
Metal Nanoparticle ◽  
Label Free ◽  
Step Method ◽  
Sers Substrates ◽  
The Matrix ◽  
Polymer Metal ◽  
Metal Nanocomposites

AbstractWe show a novel route to prepare SERS substrates, which is based on polymer–metal nanocomposites with a specific structure and composition just below the percolation threshold. The neighboring nanoparticles are still quite densely packed, but remain separated by narrow polymer gaps (<1 nm). Such a nanostructure allows the creation of densely packed hot spots where electromagnetic energy can be confined. The polymer–metal nanocomposites are fabricated by a simple and single-step method of electron-beam-assisted vapor-phase co-deposition. The preparation of the SERS substrates is based on a simple plasma-etching process, which removes the polymer structures that allow the formation of metal nanoparticle SERS nano-aggregates with very uniform and controllable inter-particle gaps. The method results in “ideal SERS hot spots” throughout the matrix. These hot spots can be created over very large areas. The prepared SERS substrates are promising candidates for the direct detection (label-free) and analysis of various biological and chemical samples.

Sensitive label-free detection of bilirubin in blood using boron nitride-modified nanorod arrays as SERS substrates

2021 ◽  
Vol 334 ◽  
pp. 129634
Author(s):  
Zhi-Qin Geng ◽  
Di Xu ◽  
Yuhang Song ◽  
Wei-Peng Wang ◽  
Yun-Peng Li ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Nanorod Arrays ◽  
Label Free ◽  
Sers Substrates ◽  
Label Free Detection

ZnO oxide films for ultrasensitive, rapid, and label-free detection of neopterin by surface-enhanced Raman spectroscopy

The Analyst ◽  
2015 ◽  
Vol 140 (15) ◽  
pp. 5090-5098 ◽  
Author(s):  
Agnieszka Kamińska ◽  
Aneta Aniela Kowalska ◽  
Dmytro Snigurenko ◽  
Elżbieta Guziewicz ◽  
Janusz Lewiński ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Low Cost ◽  
Surface Enhanced Raman Spectroscopy ◽  
Label Free ◽  
Sers Substrates ◽  
Label Free Detection ◽  
Surface Enhanced ◽  
Cost Surface ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Efficient and low-cost surface-enhanced Raman scattering (SERS) substrates based on Au coated zinc oxide layers for the detection of neopterin were prepared.

Gold-plated magnetic polymers for highly specific enrichment and label-free detection of blood biomarkers under physiological conditions

2014 ◽  
Vol 50 (70) ◽  
pp. 10066-10069 ◽  
Author(s):  
Seung-Ryong Kwon ◽  
Chang Su Jeon ◽  
Nam Young Hong ◽  
Kwang Pyo Kim ◽  
Inseong Hwang ◽  
...  
Keyword(s):  
Polymer Microspheres ◽  
Label Free ◽  
Nonspecific Binding ◽  
Blood Biomarkers ◽  
Physiological Conditions ◽  
Highly Efficient ◽  
Label Free Detection

Highly efficient prevention of nonspecific binding by gold-plated magnetic polymer microspheres enables bead-based label-free assays using MADLI MS under physiological conditions.

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