Facile Method for Constructing Metallic Nanoarrays on a Solid Surface

Hidenobu NAKAO
2009 Analytical Sciences  
1387 (~25) have {111} at each end and {100} at their sides, the end-to-end assembly of metal nanorods is oriented in the same direction. 7-9 Such a 1D array of metal nanorods strongly absorbs light of specific wavelengths with polarizations parallel to the rod axis. [1] [2] [3] Precise assembly and patterning of MNPs on surfaces and 2009 This review highlights work using the author's method to construct metallic nanoarrays. This method is a DNA-templated assembly, to assemble metal
more » ... (MNPs) in which DNA molecules are initially stretched and aligned on surfaces. Simple interface (air-liquid) moving and surface coating with polymers containing π-conjugation units, lead to the controlled formation of one-dimensional (1D) nanoarrays of DNA without special equipment. The assembly of MNPs onto DNA can be driven by electrostatic binding of newly prepared gold nanoparticles with positive charges, leading the formation of 1D metallic nanoarrays. Dark-field microscopy observations indicate that MNPs on DNA are uniaxially aligned. Finally, the fabrication and patterning of metallic nanoarrays achieved with DNA nanofibers and transfer printing techniques are discussed.
doi:10.2116/analsci.25.1387 pmid:20009323 fatcat:ipywkajjwvfbhkqhqbblee4uua