Gold nanowires with high aspect ratio and morphological purity: Synthesis, characterization, and evaluation of parameters

2013 ◽  
Vol 28 (2) ◽  
pp. 250-260 ◽  
Author(s):  
Elcin Dertli ◽  
Sahin Coskun ◽  
Emren Nalbant Esenturk
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Gold Nanowires ◽  
Evaluation Of Parameters ◽  
Image Position

Abstract

scholarly journals Far-field midinfrared superresolution imaging and spectroscopy of single high aspect ratio gold nanowires

2020 ◽  
Vol 117 (5) ◽  
pp. 2288-2293 ◽  
Author(s):  
Kyle Aleshire ◽  
Ilia M. Pavlovetc ◽  
Robyn Collette ◽  
Xiang-Tian Kong ◽  
Philip D. Rack ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Optical Measurement ◽  
Near Field ◽  
Metal Nanostructures ◽  
Gold Nanowires ◽  
Far Field ◽  
Ambient Conditions ◽  
Fabry Perot ◽  
Imaging And Spectroscopy

Limited approaches exist for imaging and recording spectra of individual nanostructures in the midinfrared region. Here we use infrared photothermal heterodyne imaging (IR-PHI) to interrogate single, high aspect ratio Au nanowires (NWs). Spectra recorded between 2,800 and 4,000 cm−1 for 2.5–3.9-μm-long NWs reveal a series of resonances due to the Fabry–Pérot modes of the NWs. Crucially, IR-PHI images show structure that reflects the spatial distribution of the NW absorption, and allow the resonances to be assigned to the m = 3 and m = 4 Fabry–Pérot modes. This far-field optical measurement has been used to image the mode structure of plasmon resonances in metal nanostructures, and is made possible by the superresolution capabilities of IR-PHI. The linewidths in the NW spectra range from 35 to 75 meV and, in several cases, are significantly below the limiting values predicted by the bulk Au Drude damping parameter. These linewidths imply long dephasing times, and are attributed to reduction in both radiation damping and resistive heating effects in the NWs. Compared to previous imaging studies of NW Fabry–Pérot modes using electron microscopy or near-field optical scanning techniques, IR-PHI experiments are performed under ambient conditions, enabling detailed studies of how the environment affects mid-IR plasmons.

scholarly journals Development of a Bi2Te3-based thermoelectric generator with high-aspect ratio, free-standing legs

2012 ◽  
Vol 27 (8) ◽  
pp. 1149-1156 ◽  
Author(s):  
D.E. Wesolowski ◽  
R.S. Goeke ◽  
A.M. Morales ◽  
S.H. Goods ◽  
P.A. Sharma ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Thermoelectric Generator ◽  
Free Standing ◽  
Image Position

Abstract

scholarly journals Correction: High-aspect-ratio water-dispersed gold nanowires incorporated within gelatin methacrylate hydrogels for constructing cardiac tissues in vitro

2020 ◽  
Author(s):  
Xiao-Pei Li ◽  
Kai-Yun Qu ◽  
Feng Zhang ◽  
Han-Ning Jiang ◽  
Ning Zhang ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Gold Nanowires ◽  
Cardiac Tissues ◽  
Dispersed Gold

Correction for ‘High-aspect-ratio water-dispersed gold nanowires incorporated within gelatin methacrylate hydrogels for constructing cardiac tissues in vitro’ by Xiao-Pei Li et al., J. Mater. Chem. B, 2020, 8, 7213–7224, DOI: 10.1039/D0TB00768D.

High-aspect-ratio water-dispersed gold nanowires incorporated within gelatin methacrylate hydrogels for constructing cardiac tissues in vitro

2020 ◽  
Vol 8 (32) ◽  
pp. 7213-7224 ◽  
Author(s):  
Xiao-Pei Li ◽  
Kai-Yun Qu ◽  
Feng Zhang ◽  
Han-Ning Jiang ◽  
Ning Zhang ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Cardiac Tissue ◽  
Gold Nanowires ◽  
Tissue Formation ◽  
Cardiac Tissues ◽  
Cardiomyocyte Culture ◽  
Dispersed Gold

The prepared high-aspect-ratio water-dispersed gold nanowires are incorporated into GeIMA hydrogels for cardiomyocyte culture and micro-cardiac tissue formation.

Growth of High-Aspect-Ratio Gold Nanowires on Silicon by Surfactant-Assisted Galvanic Reductions

Langmuir ◽  
2008 ◽  
Vol 24 (11) ◽  
pp. 5647-5649 ◽  
Author(s):  
Ting-Kai Huang ◽  
Ying-Chieh Chen ◽  
Hsin-Chun Ko ◽  
Hsin-Wei Huang ◽  
Chia-Hsin Wang ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Gold Nanowires ◽  
Surfactant Assisted

Ultrasonication-assisted synthesis of high aspect ratio gold nanowires on a graphene template and investigation of their growth mechanism

2018 ◽  
Vol 54 (33) ◽  
pp. 4124-4127 ◽  
Author(s):  
Wenbo Xin ◽  
Igor M. De Rosa ◽  
Yang Cao ◽  
Xunqian Yin ◽  
Hang Yu ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Growth Mechanism ◽  
High Aspect Ratio ◽  
Gold Nanowires ◽  
Facile Synthesis ◽  
Au Nanowires

We report a facile synthesis of Au nanowires (AuNWs) with a high aspect ratio (l/D) of up to 5000 on a plasma activated graphene template with ultrasound assistance.

scholarly journals Synthesis of High Aspect-Ratio Gold Nanowires with Highly Porous Morphology

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Lucas P. Johnson ◽  
Janis G. Matisons
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Volume Ratio ◽  
Accessible Surface Area ◽  
Gold Nanowires ◽  
Porous Gold ◽  
Sensing Applications ◽  
Accessible Surface ◽  
Porous Morphology ◽  
Highly Porous

Here, we demonstrate the formation of porous gold nanowires with diameters <60 nm by a two-step process involving the successive electrodeposition of silver then gold into the pores of a track-etched polycarbonate filtration membrane, followed by treatment with nitric acid. The resulting nanowires possess a unique, highly porous morphology, which yields a very high accessible surface area to volume ratio compared to solid nanowires of the same dimensions. Combined with the high aspect ratio of these particles (which allows for easy isolation from solution), this makes them eminently suitable for use in catalysis and sensing applications. The formation of such porous gold nanostructures was ascertained to result from the low diffusivity of the silver species within the narrow membrane pores.

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