Spirals and helices by asymmetric active surface growth

Nanoscale ◽  
2017 ◽  
Vol 9 (46) ◽  
pp. 18352-18358 ◽  
Author(s):  
Jiating He ◽  
Yong Wang ◽  
Zhanxi Fan ◽  
Yawen Wang ◽  
Hua Zhang ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Active Surface ◽  
Surface Growth ◽  
Reactant Concentration ◽  
Au Nanowires

Spiral and helical Au nanowires can be directly grown via the Active Surface Growth mechanism, which is controlled by the ratio of reactant concentration.

scholarly journals Synthesis of Substrate-Bound Au Nanowires Via an Active Surface Growth Mechanism

10.3791/57808 ◽  
2018 ◽  
Author(s):  
Xinglong Wang ◽  
Xuesong Wu ◽  
Jiating He ◽  
Xiaolin Tao ◽  
Hongyan Li ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Active Surface ◽  
Surface Growth ◽  
Au Nanowires

Substrate-bound growth of Au–Pd diblock nanowire and hybrid nanorod–plate

Nanoscale ◽  
2015 ◽  
Vol 7 (17) ◽  
pp. 8115-8121 ◽  
Author(s):  
Jiating He ◽  
Yawen Wang ◽  
Zhanxi Fan ◽  
Zhenhui Lam ◽  
Hua Zhang ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Active Surface ◽  
Surface Growth

The Active Surface Growth mechanism provides a versatile platform for the growth of substrate-bound Au–Pd diblock nanowires and hybrid nanorod–plate.

scholarly journals Designing caps for colloidal Au nanoparticles

2021 ◽  
Author(s):  
Xiaoli Tian ◽  
Jianpeng Zong ◽  
Yusai Zhou ◽  
Dapeng Chen ◽  
Jia Jia ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Active Surface ◽  
Surface Growth ◽  
Dynamic Competition ◽  
Structural Variety ◽  
Colloidal Au

We show that active surface growth is an effective method to create structural variety in the appending domain of Au seeds. The dynamic competition between the growth sites led to different Au hats on seeds.

Synthesis of Substrate-bound Seaweed-like Au Nanowires with Amino Silane Coupling Agents

2022 ◽  
Author(s):  
Jialong Yu ◽  
Weiyu Wang ◽  
Shumin Li ◽  
Beibei Yu ◽  
Hongyu Chen ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Active Surface ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
One Dimensional ◽  
Amino Silane ◽  
Silane Coupling ◽  
Dimensional Growth ◽  
Au Nanowires

Seaweed-like Au nanowires were synthesized without any nanoparticle seeds. The amino silcane coupling agent 3-aminopropyltriethoxysilane was used to form the active surface on Au substrate to facilitate one dimensional growth....

Etching-Assisted Route to Heterophase Au Nanowires with Multiple Types of Active Surface Sites for Silane Oxidation

Nano Letters ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 6363-6369 ◽  
Author(s):  
Chaoqi Wang ◽  
Xiang Li ◽  
Lei Jin ◽  
Peng-Han Lu ◽  
Catherine Dejoie ◽  
...  
Keyword(s):  
Active Surface ◽  
Surface Sites ◽  
Active Surface Sites ◽  
Au Nanowires

A mechanism of CVD diamond film growth deduced from the sequential deposition from sputtered carbon and atomic hydrogen

1994 ◽  
Vol 9 (6) ◽  
pp. 1546-1551 ◽  
Author(s):  
Darin S. Olson ◽  
Michael A. Kelly ◽  
Sanjiv Kapoor ◽  
Stig B. Hagstrom
Keyword(s):  
Growth Mechanism ◽  
Atomic Hydrogen ◽  
Film Growth ◽  
Deposition Process ◽  
Cvd Diamond ◽  
Surface Growth ◽  
Diamond Surface ◽  
Hydrogen Flux ◽  
Sequential Deposition ◽  
Disordered Carbon

We describe a growth mechanism of CVD diamond films consisting of a series of surface reactions. It is derived from experimental observations of a sequential deposition process in which incident carbon flux and atomic hydrogen flux were independently varied. In this sequential process, film growth rate increased with atomic hydrogen exposure, and a saturation in the utilization of carbon was observed. These features are consistent with a surface growth process consisting of the following steps: (i) the carburization of the diamond surface, (ii) the deposition of highly disordered carbon on top of this surface, (iii) the etching of disordered carbon by atomic hydrogen, (iv) the conversion of the carburized diamond surface to diamond at growth sites by atomic hydrogen, and (v) the carburization of newly grown diamond surface. The nature of the growth sites on the diamond surface has not been determined experimentally, and the existence of the carburized surface layer has not been demonstrated experimentally. The surface growth mechanism is the only one consistent with the growth observed in conventional diamond reactors and the sequential reactor, while precluding the necessity of gas phase precursors.

scholarly journals The Study on hydrothermal synthesis of ZrO2 nanofibers under different conditions

2021 ◽  
Vol 236 ◽  
pp. 01038
Author(s):  
Lingna Xu ◽  
Yifan Cheng ◽  
Tianen Chen ◽  
Rong Mao ◽  
Zhong Han
Keyword(s):  
Reaction Time ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Growth Mechanism ◽  
Traditional Method ◽  
Active Surface ◽  
Organic Additives ◽  
Preparation Methods ◽  
Catalyst Carrier ◽  
Traditional Preparation

Nano-ZrO2 has a high atomic active surface and is used as catalyst carrier. The traditional method of preparing ZrO2 nanofibers is electrostatic spinning, which has the problems of high cost and high equipment requirements. In order to solve the shortcomings of traditional preparation methods and prepare excellent ZrO2 nanofibers, a series of ZrO2 nanofibers were prepared based on hydrothermal method by changing the types of reactants, the ratio of reactants to organic additives, solvents, reaction time and other relevant parameters, to explore the growth mechanism of ZrO2 nanofibers, providing a new idea for the preparation of ZrO2 nanofibers on the active surface of altiplano.

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