Au nanoparticle-grafted hierarchical pillars array replicated from diatom as reliable SERS substrates

2020 ◽  
pp. 148374
Author(s):  
Jun Cai ◽  
Zhenhu Wang ◽  
Mengjiao Wang ◽  
Deyuan Zhang
Keyword(s):  
Au Nanoparticle ◽  
Sers Substrates

Facile Fabrication of High-Density Sub-1-nm Gaps from Au Nanoparticle Monolayers as Reproducible SERS Substrates

2016 ◽  
Vol 26 (44) ◽  
pp. 8137-8145 ◽  
Author(s):  
Shaorong Si ◽  
Wenkai Liang ◽  
Yinghui Sun ◽  
Jing Huang ◽  
Weiliang Ma ◽  
...  
Keyword(s):  
High Density ◽  
Au Nanoparticle ◽  
Sers Substrates ◽  
Facile Fabrication

scholarly journals Facile method for detecting C 23 H 25 ClN 2 in fish using Au nanoparticle films as SERS substrates on glass

2018 ◽  
Vol 13 (6) ◽  
pp. 868-871
Author(s):  
Yan‐meng Li ◽  
Li‐wei Wang ◽  
Ruo‐ping Li ◽  
Jun‐he Han ◽  
Ming‐ju Huang
Keyword(s):  
Au Nanoparticle ◽  
Sers Substrates ◽  
Nanoparticle Films ◽  
C 23

scholarly journals Use of Polycrystalline Ice for Assembly of Large Area Au Nanoparticle Superstructures as SERS Substrates

2016 ◽  
Vol 9 (1) ◽  
pp. 513-520 ◽  
Author(s):  
Deribachew Bekana ◽  
Rui Liu ◽  
Meseret Amde ◽  
Jing-Fu Liu
Keyword(s):  
Au Nanoparticle ◽  
Large Area ◽  
Sers Substrates ◽  
Polycrystalline Ice

Fabrication of shape-controlled Au nanoparticle arrays for SERS substrates

2014 ◽  
Vol 3 (3) ◽  
pp. 139-149
Author(s):  
Seon Mi Shin ◽  
Kyeong Woo Choi ◽  
Seong Ji Ye ◽  
Young Yun Kim ◽  
O Ok Park
Keyword(s):  
Au Nanoparticle ◽  
Nanoparticle Arrays ◽  
Sers Substrates ◽  
Shape Controlled

Fast assembling microarrays of superparamagnetic Fe3O4@Au nanoparticle clusters as reproducible substrates for surface-enhanced Raman scattering

Nanoscale ◽  
2015 ◽  
Vol 7 (32) ◽  
pp. 13427-13437 ◽  
Author(s):  
Min Ye ◽  
Zewen Wei ◽  
Fei Hu ◽  
Jianxin Wang ◽  
Guanglu Ge ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Au Nanoparticle ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Nanoparticle Clusters ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

A method featuring fast assembling microarrays of superparamagnetic Fe3O4@Au nanoparticle clusters as highly reproducible SERS substrates is reported.

scholarly journals Non-lithographic SERS Substrates: Tailoring Surface Chemistry for Au Nanoparticle Cluster Assembly

Small ◽  
2012 ◽  
Vol 8 (14) ◽  
pp. 2239-2249 ◽  
Author(s):  
Sarah M. Adams ◽  
Salvatore Campione ◽  
Joshua D. Caldwell ◽  
Francisco J. Bezares ◽  
James C. Culbertson ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Au Nanoparticle ◽  
Cluster Assembly ◽  
Sers Substrates ◽  
Nanoparticle Cluster

scholarly journals Fabrication of Au-Nanoparticle-Decorated Cu Mesh/Cu(OH)2 @HKUST-1 Nanorod Arrays and Their Applications in Surface-Enhanced Raman Scattering

2021 ◽  
Vol 14 (1) ◽  
pp. 228
Author(s):  
Xiaoqiao Huang ◽  
Li Cai ◽  
Tingting Fan ◽  
Kexi Sun ◽  
Le Yao ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Three Dimensional ◽  
Surface Enhanced Raman Scattering ◽  
Au Nanoparticle ◽  
Nanorod Arrays ◽  
Au Nps ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Here we report a simple fabrication method for large-scale hybrid surface-enhanced Raman scattering (SERS) active substrates composed of Au-nanoparticle-decorated three-dimensional (3D) Cu(OH)2@HKUST-1 (Cu3(btc)2, H3btc = 1,3,5-benzenetricarboxylic acid) nanorod arrays on a woven Cu mesh (Cu mesh/Cu(OH)2@HKUST-1@Au). Cu(OH)2 nanorods were first obtained from a simple in situ chemical engraving Cu mesh and then utilized as self-sacrificing templates to achieve HKUST-1 nanocube-assembled nanorods; finally, Au nanoparticles (Au NPs) were sputtered onto the Cu(OH)2@HKUST-1 nanorods. Due to the large surface area, the three-dimensional Cu mesh/Cu(OH)2@HKUST-1 nanorods could load high-density Au NPs and capture target detection molecules, which is beneficial to the formation of a strong electromagnetic field coupling between Au NPs, and provides abundant “hot spots” for a sensitive and uniform SERS effect. Using the Cu mesh/Cu(OH)2@HKUST-1@Au nanorod arrays as the SERS substrate, 10−9 M Rhodamine 6G and 10−8 M 4-aminothiophenolcan were identified. To verify their practical application, the fabricated arrays were employed as SERS substrates for the detection of thiram, and 10−8 M thiram could be recognized. The hybrid SERS substrates show potential applications in the field of environmental pollutant detection and this is of great significance to the sustainable development of the environment.

An Effort to Making a Colorimitric Nano-Biosensor for Vibrio cholera Detection

2020 ◽  
Vol 16 (5) ◽  
pp. 793-804
Author(s):  
Naimeh Mahheidari ◽  
Jamal Rashidiani ◽  
Hamid Kooshki ◽  
Khadijeh Eskandari
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Assay ◽  
Au Nanoparticle ◽  
Bacteria Detection ◽  
Great Promise ◽  
Bacterial Cells ◽  
Vibrio Cholera ◽  
Minimum Concentration ◽  
Vis Spectroscopy ◽  
Fast Procedure

Background: Today, nanoparticles hold great promise in biomedical researches and applications including bacteria detection. The rapid and sensitive outcomes of bacteria detection strategies using nanoparticle conjugates become determinative, especially in bacterial outbreaks. In the current research, we focused on detecting V. cholera bacteria and its toxin using a thiocyanate/Au nanoparticle. Thiocyanate adsorbed strongly on the surface of gold nanoparticles and changed the surface by enhancing surface plasmon resonance of gold nanoparticles. Objective: This method is tried to introduce a simple and fast procedure to assay vibrio cholera. So, it is observed by the naked eyes as well. Methods: We used two antibodies (Ab) for V. cholera detection: a) a primary antibody conjugated to magnetic nanoparticles (MNPs) for trapping V. cholera bacterial cells, and b) a secondary Abconjugated thiocyanate-GNPs as a colorimetric detector. Then, an immuno-magnetic separation system connected to a colorimetric assay was designed based on the GNPs. The results were measured by ultraviolet-visible (UV-Vis) spectroscopy. Results: The results showed that gold nanoparticles are an appropriate optical assay for detecting biological samples in a minimum concentration and also it can be easily seen by the naked eyes. The linear range of this biosensor is 3.2×104 to 28×104 cells per ml. Conclusion: In this research, a colorimetric immune assay based on gold nanoparticles was designed to improve the sensitivity of V. cholera detection. Also, this method can be used for the detection of other biological agents.

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