scholarly journals High-yield synthesis and fine-tuning aspect ratio of (200) faceted gold nanorods by the pH-adjusting method

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25469-25474 ◽  
Author(s):  
Yumin Leng ◽  
Xunjun Yin ◽  
Fang Hu ◽  
Yuehong Zou ◽  
Xiaojing Xing ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
Fine Tuning ◽  
High Yield ◽  
Aspect Ratios ◽  
Crystallographic Facets

Tight-controlling of the aspect ratios (ARs) and fine-tailoring of the crystallographic facets of gold nanorods (GNRs) are critical for their further applications in material, biological, and medical fields.

Seedless synthesis of high aspect ratio gold nanorods with high yield

2014 ◽  
Vol 2 (10) ◽  
pp. 3528 ◽  
Author(s):  
Xiaolong Xu ◽  
Yuanyuan Zhao ◽  
Xiangdong Xue ◽  
Shuaidong Huo ◽  
Fei Chen ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
High Aspect Ratio ◽  
High Yield

scholarly journals Two-step synthesis of high aspect ratio gold nanorods

2006 ◽  
Vol 4 (1) ◽  
pp. 160-165 ◽  
Author(s):  
Tom Mortier ◽  
André Persoons ◽  
Thierry Verbiest
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
High Aspect Ratio ◽  
Cetyltrimethylammonium Bromide ◽  
Surfactant Concentration ◽  
Synthetic Method ◽  
Aspect Ratios ◽  
Seed Mediated

AbstractWe describe a very simple, two-step synthetic method to prepare gold nanorods with extremely high aspect ratios (> 20) and average lengths of more than 1000 nm. The method is based on a seed-mediated growth in presence of the surfactant cetyltrimethylammonium bromide. The length and aspect ratios of the nanorods can be manipulated by varying the surfactant concentration.

The evolution of size, shape, and surface morphology of gold nanorods

2018 ◽  
Vol 54 (24) ◽  
pp. 3022-3025 ◽  
Author(s):  
Wenming Tong ◽  
Hadas Katz-Boon ◽  
Michael J. Walsh ◽  
Matthew Weyland ◽  
Joanne Etheridge ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Surface Morphology ◽  
Single Crystal ◽  
Gold Nanorods ◽  
Aspect Ratios

The transformation of single crystal gold nanorods over extended growth times shows smoothing of surface morphology and reduction and convergence of aspect ratios across AgNO3 concentrations. The final aspect ratio has little dependence on the AgNO3 concentration.

scholarly journals Towards a Reproducible Synthesis of High Aspect Ratio Gold Nanorods

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Susanne Koeppl ◽  
Christian Solenthaler ◽  
Walter Caseri ◽  
Ralph Spolenak
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
High Aspect Ratio ◽  
Particle Growth ◽  
Product Distribution ◽  
Poly Vinyl Alcohol ◽  
Aspect Ratios ◽  
Synthesis Procedure ◽  
High Concentrations ◽  
High Absorption

The seed-mediated method in presence of high concentrations of CTAB is frequently implemented in the preparation of high aspect ratio gold nanorods (i.e., nanorods with aspect ratios of 5 or more); however, the reproducibility has still been limited. We rendered the synthesis procedure simpler, decreased the susceptibility to impurities, and improved the reproducibility of the product distribution. As a result of the high aspect ratios, longitudinal plasmon absorptions were shifted up to very high absorption maxima of 1955 nm in UV-vis-NIR spectra (since this band is completely covered in aqueous solution by the strong absorption of water, the gold species were embedded in poly(vinyl alcohol) films for UV-vis-NIR measurements). Finally, the directed particle growth in (110) direction leads to the conclusion that the adsorption of CTAB molecules at specific crystal faces accounts for nanorod growth and not cylindrical CTAB micelles, in agreement with other observations.

Aspect-ratio-controlled synthesis of high-aspect-ratio gold nanorods in high-yield

2009 ◽  
Vol 9 (2) ◽  
pp. e140-e143 ◽  
Author(s):  
Won Min Park ◽  
Yun Suk Huh ◽  
Won Hi Hong
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
High Aspect Ratio ◽  
High Yield ◽  
Controlled Synthesis

An efficient top-down approach for the fabrication of large-aspect-ratio g-C3N4 nanosheets with enhanced photocatalytic activities

2015 ◽  
Vol 17 (36) ◽  
pp. 23532-23537 ◽  
Author(s):  
Jincheng Tong ◽  
Li Zhang ◽  
Fei Li ◽  
Mingming Li ◽  
Shaokui Cao
Keyword(s):  
Aspect Ratio ◽  
High Yield ◽  
Large Aspect Ratio ◽  
Top Down ◽  
Aspect Ratios ◽  
Yield Production ◽  
Photocatalytic Activities ◽  
High Yield Production

Rapid and high-yield production of g-C3N4 nanosheets with large aspect ratios by a moderate disintegration–exfoliation approach.

Crystallographic facets and shapes of gold nanorods of different aspect ratios

1999 ◽  
Vol 440 (1-2) ◽  
pp. L809-L814 ◽  
Author(s):  
Z.L. Wang ◽  
M.B. Mohamed ◽  
S. Link ◽  
M.A. El-Sayed
Keyword(s):  
Gold Nanorods ◽  
Aspect Ratios ◽  
Crystallographic Facets

Direct High-Yield Synthesis of High Aspect Ratio Gold Nanorods

2007 ◽  
Vol 7 (4) ◽  
pp. 831-835 ◽  
Author(s):  
Hsiang-Yang Wu ◽  
Wan-Ling Huang ◽  
Michael H. Huang
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
High Aspect Ratio ◽  
High Yield

scholarly journals Effects of Steel Fiber Percentage and Aspect Ratios on Fresh and Harden Properties of Ultra-High Performance Fiber

2021 ◽  
Vol 2 (3) ◽  
pp. 501-515
Author(s):  
Rajib Kumar Biswas ◽  
Farabi Bin Ahmed ◽  
Md. Ehsanul Haque ◽  
Afra Anam Provasha ◽  
Zahid Hasan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aspect Ratio ◽  
High Performance ◽  
Steel Fiber ◽  
Setting Time ◽  
Fiber Reinforced Concrete ◽  
Future Research ◽  
Manufacturing Cost ◽  
Aspect Ratios ◽  
High Performance Fiber

Steel fibers and their aspect ratios are important parameters that have significant influence on the mechanical properties of ultrahigh-performance fiber-reinforced concrete (UHPFRC). Steel fiber dosage also significantly contributes to the initial manufacturing cost of UHPFRC. This study presents a comprehensive literature review of the effects of steel fiber percentages and aspect ratios on the setting time, workability, and mechanical properties of UHPFRC. It was evident that (1) an increase in steel fiber dosage and aspect ratio negatively impacted workability, owing to the interlocking between fibers; (2) compressive strength was positively influenced by the steel fiber dosage and aspect ratio; and (3) a faster loading rate significantly improved the mechanical properties. There were also some shortcomings in the measurement method for setting time. Lastly, this research highlights current issues for future research. The findings of the study are useful for practicing engineers to understand the distinctive characteristics of UHPFRC.

Effect of aspect ratio on the chirality of gold nanorods prepared through conventional seed-mediated growth method

2021 ◽  
Vol 1152 ◽  
pp. 338277
Author(s):  
Xiaojuan Zhou ◽  
Qiang Liu ◽  
Xiaoyu Shi ◽  
Chunli Xu ◽  
Baoxin Li
Keyword(s):  
Aspect Ratio ◽  
Gold Nanorods ◽  
Growth Method ◽  
Seed Mediated
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