Display options
Cite
Mansourian A, Paknejad SA, Wen Q, et al. Tunable Ultra-high Aspect Ratio Nanorod Architectures grown on Porous Substrate via Electromigration. Sci Rep. 2016;6:22272doi: 10.1038/srep22272.
Mansourian, A., Paknejad, S. A., Wen, Q., Vizcay-Barrena, G., Fleck, R. A., Zayats, A. V., & Mannan, S. H. (2016). Tunable Ultra-high Aspect Ratio Nanorod Architectures grown on Porous Substrate via Electromigration. Scientific reports, 622272. https://doi.org/10.1038/srep22272
Mansourian, Ali, et al. "Tunable Ultra-high Aspect Ratio Nanorod Architectures grown on Porous Substrate via Electromigration." Scientific reports vol. 6 (2016): 22272. doi: https://doi.org/10.1038/srep22272
Mansourian A, Paknejad SA, Wen Q, Vizcay-Barrena G, Fleck RA, Zayats AV, Mannan SH. Tunable Ultra-high Aspect Ratio Nanorod Architectures grown on Porous Substrate via Electromigration. Sci Rep. 2016 Feb 29;6:22272. doi: 10.1038/srep22272. PMID: 26923553; PMCID: PMC4770296.
Copy Download .nbib Format: NLM
Share it on

Sci Rep. 2016 Feb 29;6:22272. doi: 10.1038/srep22272.

Tunable Ultra-high Aspect Ratio Nanorod Architectures grown on Porous Substrate via Electromigration.

Scientific reports

Ali Mansourian, Seyed Amir Paknejad, Qiannan Wen, Gema Vizcay-Barrena, Roland A Fleck, Anatoly V Zayats, Samjid H Mannan

Affiliations

  1. Department of Physics, King's College London, Strand, London WC2R 2LS, UK.
  2. Department of Physics and Materials Science and Centre for Functional Photonics (CFP), City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
  3. Centre for Ultrastructural Imaging (CUI), King's College London, New Hunt's House, Guy's Campus, London, SE1 1UL, UK.

PMID: 26923553 PMCID: PMC4770296 DOI: 10.1038/srep22272

Abstract

The interplay between porosity and electromigration can be used to manipulate atoms resulting in mass fabrication of nanoscale structures. Electromigration usually results in the accumulation of atoms accompanied by protrusions at the anode and atomic depletion causing voids at the cathode. Here we show that in porous media the pattern of atomic deposition and depletion is altered such that atomic accumulation occurs over the whole surface and not just at the anode. The effect is explained by the interaction between atomic drift due to electric current and local temperature gradients resulting from intense Joule heating at constrictions between grains. Utilizing this effect, a porous silver substrate is used to mass produce free-standing silver nanorods with very high aspect ratios of more than 200 using current densities of the order of 10(8) A/m(2). This simple method results in reproducible formation of shaped nanorods, with independent control over their density and length. Consequently, complex patterns of high quality single crystal nanorods can be formed in-situ with significant advantages over competing methods of nanorod formation for plasmonics, energy storage and sensing applications.

References

  1. Nat Nanotechnol. 2011 Jan;6(1):33-8 - PubMed
  2. Nano Lett. 2013 Mar 13;13(3):1023-8 - PubMed
  3. Sci Rep. 2011;1:46 - PubMed
  4. Nat Mater. 2012 Mar;11(3):241-9 - PubMed
  5. Nano Lett. 2008 Jan;8(1):345-9 - PubMed
  6. Nat Nanotechnol. 2014 Nov;9(11):881-5 - PubMed
  7. ACS Nano. 2010 Jun 22;4(6):2999-3004 - PubMed

Publication Types