Electric-Field-Assisted Growth of Highly Uniform and Oriented Gold Nanotriangles on Conducting Glass Substrates

Authors

  • P. R. Sajanlal,

    1. DST Unit on Nanoscience, Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai – 600 036 (India)
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  • T. Pradeep

    1. DST Unit on Nanoscience, Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai – 600 036 (India)
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  • We thank Department of Science and Technology, Government of India for constantly supporting our research program on nanomaterials. Thanks are due to Dr. T. Tsukuda, Institute of Molecular Science, Okazaki, Japan for allowing the use of his AFM facility for the DFM measurements. C. Subramaniam is thanked for assistance. Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

original image

A method for the growth of highly aligned gold nanotriangles (NTs) on conducting glass surfaces is described. This may be described as ‘potential-assisted seed mediated growth'. Atomic force microscopy confirms that all the triangles observed are equilateral and are uniformly stacked. The NT-coated glass exhibits intense near-infrared absorption and strong surface-enhanced Raman activity.

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