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Real-time visualization of diffusion-controlled nanowire growth in solution.

Publication ,  Journal Article
Ye, S; Chen, Z; Ha, Y-C; Wiley, BJ
Published in: Nano letters
August 2014

This Letter shows that copper nanowires grow through the diffusion-controlled reduction of dihydroxycopper(I), Cu(OH)2(-). A combination of potentiostatic coulometry, UV-visible spectroscopy, and thermodynamic calculations was used to determine the species adding to growing Cu nanowires is Cu(OH)2(-). Cyclic voltammetry was then used to measure the diffusion coefficient of Cu(OH)2(-) in the reaction solution. Given the diameter of a Cu nanowire and the diffusion coefficient of Cu(OH)2(-), we calculated the dependence of the diffusion-limited growth rate on the concentration of copper ions to be 26 nm s(-1) mM(-1). Independent measurements of the nanowire growth rate with dark-field optical microscopy yielded 24 nm s(-1) mM(-1) for the growth rate dependence on the concentration of copper. Dependence of the nanowire growth rate on temperature yielded a low activation energy of 11.5 kJ mol(-1), consistent with diffusion-limited growth.

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Published In

Nano letters

DOI

EISSN

1530-6992

ISSN

1530-6984

Publication Date

August 2014

Volume

14

Issue

8

Start / End Page

4671 / 4676

Related Subject Headings

  • Spectrophotometry, Ultraviolet
  • Nanowires
  • Nanoscience & Nanotechnology
  • Hydroxides
  • Copper
 

Citation

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Ye, S., Chen, Z., Ha, Y.-C., & Wiley, B. J. (2014). Real-time visualization of diffusion-controlled nanowire growth in solution. Nano Letters, 14(8), 4671–4676. https://doi.org/10.1021/nl501762v
Ye, Shengrong, Zuofeng Chen, Yoon-Cheol Ha, and Benjamin J. Wiley. “Real-time visualization of diffusion-controlled nanowire growth in solution.Nano Letters 14, no. 8 (August 2014): 4671–76. https://doi.org/10.1021/nl501762v.
Ye S, Chen Z, Ha Y-C, Wiley BJ. Real-time visualization of diffusion-controlled nanowire growth in solution. Nano letters. 2014 Aug;14(8):4671–6.
Ye, Shengrong, et al. “Real-time visualization of diffusion-controlled nanowire growth in solution.Nano Letters, vol. 14, no. 8, Aug. 2014, pp. 4671–76. Epmc, doi:10.1021/nl501762v.
Ye S, Chen Z, Ha Y-C, Wiley BJ. Real-time visualization of diffusion-controlled nanowire growth in solution. Nano letters. 2014 Aug;14(8):4671–4676.
Journal cover image

Published In

Nano letters

DOI

EISSN

1530-6992

ISSN

1530-6984

Publication Date

August 2014

Volume

14

Issue

8

Start / End Page

4671 / 4676

Related Subject Headings

  • Spectrophotometry, Ultraviolet
  • Nanowires
  • Nanoscience & Nanotechnology
  • Hydroxides
  • Copper