Co-adsorption of electrolyte and protein to Ag colloid observed by surface-enhanced Raman scattering

The Analyst ◽  
2010 ◽  
Vol 135 (9) ◽  
pp. 2372 ◽  
Author(s):  
Zhen Zhou ◽  
In-sang Yang ◽  
Genin Gary Huang ◽  
Yukihiro Ozaki
Nanophotonics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1719-1729 ◽  
Author(s):  
Xiaofei Zhao ◽  
Chonghui Li ◽  
Zhen Li ◽  
Jing Yu ◽  
Jie Pan ◽  
...  

AbstractAn efficient electrospun aligned surface enhanced Raman scattering (SERS) and maize-like substrate of polyvinyl alcohol (PVA) composite and Ag colloid nanofibers decorated with thermal evaporated Ag nanoparticles (AgNPs) has been developed by taking advantage of electrostatic interactions. The synergistic effects of the evaporated AgNPs (niblets) and the Ag colloid in PVA (corncob) could arouse strong electromagnetic field between the lateral and vertical nanogaps which has been demonstrated by experiment and finite-different time-domain (FDTD) simulation. In this experiment, the aligned nanofibers possesses an excellent sensitivity by detection of crystal violet (CV) and malachite green (MG) molecule at low concentration. Moreover, the proposed flexible SERS sensor was measured with outstanding uniformity and reproducibility. We also carried out in-situ electrospinning on a curved surface to detect the mixture of Sudan I, CV and MG molecule, which demonstrates that flexible SERS sensor, has enormous potential in accurate and in-situ detection on the complex geometric structure.


2020 ◽  
Vol 522 ◽  
pp. 146466 ◽  
Author(s):  
Maria L.B. Figueiredo ◽  
Cibely S. Martin ◽  
Leonardo N. Furini ◽  
Rafael J.G. Rubira ◽  
Augusto Batagin-Neto ◽  
...  

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