A self-heated silicon nanowire array: selective surface modification with catalytic nanoparticles by nanoscale Joule heating and its gas sensing applications

Nanoscale ◽  
2013 ◽  
Vol 5 (15) ◽  
pp. 6851 ◽  
Author(s):  
Jeonghoon Yun ◽  
Chun Yan Jin ◽  
Jae-Hyuk Ahn ◽  
Seokwoo Jeon ◽  
Inkyu Park
Keyword(s):  
Surface Modification ◽  
Joule Heating ◽  
Gas Sensing ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Sensing Applications ◽  
Silicon Nanowire Array ◽  
Catalytic Nanoparticles ◽  
Selective Surface Modification

scholarly journals A Novel Top-Down Fabrication Process for Vertically-Stacked Silicon-Nanowire Array

2020 ◽  
Vol 10 (3) ◽  
pp. 1146 ◽  
Author(s):  
Kangil Kim ◽  
Jae Keun Lee ◽  
Seung Ju Han ◽  
Sangmin Lee
Keyword(s):  
Silicon Nanowires ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Nanowire Arrays ◽  
Fabrication Method ◽  
Top Down ◽  
Silicon Nanowire Arrays ◽  
Sensing Applications ◽  
Silicon Nanowire Array ◽  
Cross Sectional Dimension

Silicon nanowires are widely used for sensing applications due to their outstanding mechanical, electrical, and optical properties. However, one of the major challenges involves introducing silicon-nanowire arrays to a specific layout location with reproducible and controllable dimensions. Indeed, for integration with microscale structures and circuits, a monolithic wafer-level process based on a top-down silicon-nanowire array fabrication method is essential. For sensors in various electromechanical and photoelectric applications, the need for silicon nanowires (as a functional building block) is increasing, and thus monolithic integration is highly required. In this paper, a novel top-down method for fabricating vertically-stacked silicon-nanowire arrays is presented. This method enables the fabrication of lateral silicon-nanowire arrays in a vertical direction, as well as the fabrication of an increased number of silicon nanowires on a finite dimension. The proposed fabrication method uses a number of processes: photolithography, deep reactive-ion etching, and wet oxidation. In applying the proposed method, a vertically-aligned silicon-nanowire array, in which a single layer consists of three vertical layers with 20 silicon nanowires, is fabricated and analyzed. The diamond-shaped cross-sectional dimension of a single silicon nanowire is approximately 300 nm in width and 20 μm in length. The developed method is expected to result in highly-sensitive, reproducible, and low-cost silicon-nanowire sensors for various biomedical applications.

A vertical tip–tip contact silicon nanowire array for gas sensing

Nanoscale ◽  
2016 ◽  
Vol 8 (41) ◽  
pp. 17757-17764 ◽  
Author(s):  
Leimiao Lin ◽  
Dong Liu ◽  
Qiaofen Chen ◽  
Hongzhi Zhou ◽  
Jianmin Wu
Keyword(s):  
Gas Sensing ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Silicon Nanowire Array

scholarly journals Reusable Surface-Enhanced Raman Spectroscopy Substrates Made of Silicon Nanowire Array Coated with Silver Nanoparticles Fabricated by Metal-Assisted Chemical Etching and Photonic Reduction

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1531 ◽  
Author(s):  
Shi Bai ◽  
Yongjun Du ◽  
Chunyan Wang ◽  
Jian Wu ◽  
Koji Sugioka
Keyword(s):  
Silver Nanoparticles ◽  
Chemical Etching ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Silicon Nanowire Array ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Metal Assisted Chemical Etching

Surface-enhanced Raman spectroscopy (SERS) has advanced over the last four decades and has become an attractive tool for highly sensitive analysis in fields such as medicine and environmental monitoring. Recently, there has been an urgent demand for reusable and long-lived SERS substrates as a means of reducing the costs associated with this technique To this end, we fabricated a SERS substrate comprising a silicon nanowire array coated with silver nanoparticles, using metal-assisted chemical etching followed by photonic reduction. The morphology and growth mechanism of the SERS substrate were carefully examined and the performance of the fabricated SERS substrate was tested using rhodamine 6G and dopamine hydrochloride. The data show that this new substrate provides an enhancement factor of nearly 1 × 108. This work demonstrates that a silicon nanowire array coated with silver nanoparticles is sensitive and sufficiently robust to allow repeated reuse. These results suggest that this newly developed technique could allow SERS to be used in many commercial applications.

scholarly journals High density core-shell silicon nanowire array for the realization of third generation solar cell

2011 ◽  
Vol 10 ◽  
pp. 33-37 ◽  
Author(s):  
Ludovic Dupré ◽  
Denis Buttard ◽  
Pascal Gentile ◽  
Nicolas Pauc ◽  
Amit Solanki
Keyword(s):  
Solar Cell ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
High Density ◽  
Core Shell ◽  
Third Generation ◽  
Silicon Nanowire Array

An Electrochemical Glucose Biosensor with a Silicon Nanowire Array Electrode

2015 ◽  
Vol 162 (10) ◽  
pp. B264-B268 ◽  
Author(s):  
Che-Wei Hsu ◽  
Wen-Chao Feng ◽  
Fang-Ci Su ◽  
Gou-Jen Wang
Keyword(s):  
Silicon Nanowire ◽  
Nanowire Array ◽  
Glucose Biosensor ◽  
Array Electrode ◽  
Silicon Nanowire Array

ChemInform Abstract: A Palladium-Nanoparticle and Silicon-Nanowire-Array Hybrid: A Platform for Catalytic Heterogeneous Reactions.

ChemInform ◽  
2014 ◽  
Vol 45 (30) ◽  
pp. no-no
Author(s):  
Yoichi M. A. Yamada ◽  
Yoshinari Yuyama ◽  
Takuma Sato ◽  
Shigenori Fujikawa ◽  
Yasuhiro Uozumi
Keyword(s):  
Silicon Nanowire ◽  
Nanowire Array ◽  
Heterogeneous Reactions ◽  
Palladium Nanoparticle ◽  
Silicon Nanowire Array

Third optical harmonic generation reveals circular anisotropy in tilted silicon nanowire array

2021 ◽  
Vol 46 (5) ◽  
pp. 1189
Author(s):  
Alexey S. Ustinov ◽  
Liubov A. Osminkina ◽  
Denis E. Presnov ◽  
Leonid A. Golovan
Keyword(s):  
Harmonic Generation ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Silicon Nanowire Array ◽  
Optical Harmonic Generation ◽  
Optical Harmonic

Metal-Assisted Chemical Etching Using Silica Nanoparticle for the Fabrication of a Silicon Nanowire Array

2012 ◽  
Vol 51 (2) ◽  
pp. 02BP09 ◽  
Author(s):  
Shinya Kato ◽  
Yuya Watanabe ◽  
Yasuyoshi Kurokawa ◽  
Akira Yamada ◽  
Yoshimi Ohta ◽  
...  
Keyword(s):  
Chemical Etching ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Silica Nanoparticle ◽  
Silicon Nanowire Array ◽  
Metal Assisted Chemical Etching
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