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Engineering Science and Materials Commons

Open Access. Powered by Scholars. Published by Universities.®

2015

DNA

Graduate Theses and Dissertations

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Investigating The Use Of In Situ Liquid Cell Scanning Transmission Electron Microscopy To Explore Dna-Mediated Gold Nanoparticle Growth, Amanda Nguy Jan 2015

Investigating The Use Of In Situ Liquid Cell Scanning Transmission Electron Microscopy To Explore Dna-Mediated Gold Nanoparticle Growth, Amanda Nguy

Graduate Theses and Dissertations

Engineering nanoparticles with desired shape-dependent properties is the key to many applications in nanotechnology. Although many synthetic procedures exist to produce anisotropic gold nanoparticles, the dynamics of growth are typically unknown or hypothetical. In the case of seed-mediated growth in the presence of DNA into anisotropic nanoparticles, it is not known exactly how DNA directs growth into specific morphologies. A series of preliminary experiments were carried out to contribute to the investigation of the possible mechanism of DNA-mediated growth of gold nanoprisms into gold nanostars using liquid cell scanning transmission electron microscopy (STEM). Imaging in the liquid phase was achieved ...