Large-Scale Uniform Two-Dimensional Hexagonal Arrays of Gold Nanoparticles Templated from Mesoporous Silica Film for Surface-Enhanced Raman Spectroscopy

2016 ◽  
Vol 120 (42) ◽  
pp. 24382-24388 ◽  
Author(s):  
Yi-Wen Wang ◽  
Kun-Che Kao ◽  
Juen-Kai Wang ◽  
Chung-Yuan Mou
Keyword(s):  
Gold Nanoparticles ◽  
Raman Spectroscopy ◽  
Large Scale ◽  
Surface Enhanced Raman Spectroscopy ◽  
Silica Film ◽  
Two Dimensional ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Mesoporous Silica Film ◽  
Hexagonal Arrays

scholarly journals Self-assembled quasi-hexagonal arrays of gold nanoparticles with small gaps for surface-enhanced Raman spectroscopy

2018 ◽  
Vol 9 ◽  
pp. 1977-1985 ◽  
Author(s):  
Emre Gürdal ◽  
Simon Dickreuter ◽  
Fatima Noureddine ◽  
Pascal Bieschke ◽  
Dieter P Kern ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Noble Metal Nanoparticles ◽  
Particle Sizes ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Self Assembled ◽  
Narrow Gaps ◽  
Hexagonal Arrays

The fabrication and optical characterization of self-assembled arrangements of rough gold nanoparticles with a high area coverage and narrow gaps for surface-enhanced Raman spectroscopy (SERS) are reported. A combination of micellar nanolithography and electroless deposition (ED) enables the tuning of the spacing and size of the noble metal nanoparticles. Long-range ordered quasi-hexagonal arrays of gold nanoparticles on silicon substrates with a variation of the particle sizes from about 20 nm to 120 nm are demonstrated. By increasing the particle sizes for the homogeneously spaced particles, a large number of narrow gaps is created, which together with the rough surface of the particles induces a high density of intense hotspots. This makes the surfaces interesting for future applications in near-field-enhanced bio-analytics of molecules. SERS was demonstrated by measuring Raman spectra of 4-MBA on the gold nanoparticles. It was verified that a smaller inter-particle distance leads to an increased SERS signal.

Mapping gold nanoparticles on and in edible leaves in situ using surface enhanced Raman spectroscopy

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60152-60159 ◽  
Author(s):  
Zhiyun Zhang ◽  
Huiyuan Guo ◽  
Yingqing Deng ◽  
Baoshan Xing ◽  
Lili He
Keyword(s):  
Gold Nanoparticles ◽  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Mapping Technique ◽  
Raman Spectroscopic ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Spinach Leaves

A surface enhanced Raman spectroscopic (SERS) mapping technique was applied to qualitatively detect and characterize gold nanoparticles on and in spinach leaves in situ.

An ultrasensitive “turn-off” SERS sensor for quantitatively detecting heparin based on 4-mercaptobenzoic acid functionalized gold nanoparticles

2017 ◽  
Vol 9 (17) ◽  
pp. 2517-2522 ◽  
Author(s):  
Chenmeng Zhang ◽  
Xiu Liang ◽  
Tingting You ◽  
Nan Yang ◽  
Yukun Gao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Functionalized Gold Nanoparticles ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We develop an ultrasensitive “turn off” Surface Enhanced Raman Spectroscopy (SERS) sensor for the detection of heparin based on the anti-aggregation of 4-mercaptobenzoic acid stabilized gold nanoparticles.

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