Growth Mechanism of Flowerlike Gold Nanostructures: Surface Plasmon Resonance (SPR) and Resonance Rayleigh Scattering (RRS) Approaches to Growth Monitoring

2008 ◽  
Vol 112 (42) ◽  
pp. 16348-16353 ◽  
Author(s):  
Wei Wang ◽  
Xuan Yang ◽  
Hua Cui
RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 9272-9277 ◽  
Author(s):  
Yaohui Wang ◽  
Xinghui Zhang ◽  
Qingye Liu ◽  
Guiqing Wen ◽  
Aihui Liang ◽  
...  

A sensitive graphene oxide/nanogold surface plasmon resonance Rayleigh scattering-energy transfer analytical platform was developed for detection of iodide and H2O2.


Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 5930
Author(s):  
Hongyan Bai ◽  
Haolin Wang ◽  
Fuzhang Bai ◽  
Aihui Liang ◽  
Zhiliang Jiang

Using citric acid (CA) and ethylenediamine (EDA) as precursors, stable nitrogen-doped carbon dots (CD) nanosols were prepared by microwave procedure and characterized in detail. It was found that CDNs catalyze ethanol (Et)-HAuCl4 to generate gold nanoparticles (AuNPs), which have strong surface plasmon resonance, Rayleigh scattering, (RRS) and a surface plasmon resonance (SPR) absorption (Abs) effect at 370 nm and 575 nm, respectively. Compled the new catalytic amplification indicator reaction with the specific As3+ aptamer reaction, a new RRS/Abs dual-mode aptamer sensor for the assay of trace As3+ was developed, based on the RRS/Abs signals increasing linearly with As3+ increasing in the ranges of 5–250 nmol/L and 50−250 nmol/L, whose detection limits were 0.8 nmol/L and 3.4 nmol/L As3+, respectively. This analytical method has the advantages of high selectivity, simplicity, and rapidity, and it has been successfully applied to the detection of practical samples.


2020 ◽  
Vol 2 (3) ◽  
pp. 1128-1137
Author(s):  
Hyun-Tae Kim ◽  
Mayank Pathak ◽  
Keshav Rajasekaran ◽  
Ashwani K. Gupta ◽  
Miao Yu

The deformation of lithographic planar gold nanostructures under cyclic thermal loading and its influence on surface plasmon resonance sensing are investigated.


2013 ◽  
Vol 543 ◽  
pp. 393-401
Author(s):  
Adil B. Turhan ◽  
Demet Ataman ◽  
Semih Cakmakyapan ◽  
Mehmet Mutlu ◽  
Ekmel Ozbay

In this work, we report the nanofabrication, optical characterization, and electromagnetic modeling of various nanostructure arrays for localized surface plasmon resonance (LSPR) based biosensing studies. Comparison of the experimental results and simulation outputs of various nanostructure arrays was made and a good correspondence was achieved.


Langmuir ◽  
2010 ◽  
Vol 26 (6) ◽  
pp. 4266-4273 ◽  
Author(s):  
Joanna Niedziółka-Jönsson ◽  
Fatiha Barka ◽  
Xavier Castel ◽  
Marcin Pisarek ◽  
Nacer Bezzi ◽  
...  

MRS Advances ◽  
2019 ◽  
Vol 4 (5-6) ◽  
pp. 325-330
Author(s):  
Nobuko Fukuda ◽  
Sakae Manaka

ABSTRACTWe visually observed color changes of discontinuous gold surfaces on paper substrates through localized surface plasmon resonance (LSPR) at room temperature due to surface diffusion of gold nanostructures. Isolated nanoparticles and an uncompleted nanosheet of gold were obtained by thermal vapor deposition. After preservation for 8 months in air at room temperature, the particle sizes and shapes remarkably changed with color changes. The surface diffusion of the discontinuous gold on the paper would be derived from solid-state dieting, resulting in the growth of the nanosheet defect and coalescence of the nanoparticles. This is due to the total energy minimization of the surfaces of gold nanostructures and the paper and the interface between gold and the paper.


2014 ◽  
Vol 2 (46) ◽  
pp. 19861-19866 ◽  
Author(s):  
Zhuo Jiang ◽  
Qin Ouyang ◽  
Bosi Peng ◽  
Youxiang Zhang ◽  
Ling Zan

The proposed growth mechanism of Ag NPs during PAg–TiO2 (A) and SAg–TiO2 (B) preparation processes.


Sign in / Sign up

Export Citation Format

Share Document