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Electron Microscopy of Mesoscale Arrays of Quantum-Confined CdS Nanoparticles Formed on DNA Templates

  • Russell F. Pinizzotto (a1), Young G. Rho (a1), Yandong Chen (a1), Robert M. Pirtle (a2), Irma L. Pirtle (a2), Jeffery L. Coffer (a3) and Xin Li (a3)...

Abstract

This paper describes the fabrication method and initial characterization of self-assembled mesoscale arrays of quantum-confined CdS nanoparticles using DNA as a template for the overall shape. Three DNAs were used: the circular and linear forms of the plasmid pUCLeu4, and circular φ×174 RF II. In all three cases, the mesoscale lengths are consistent with the A-form of DNA. The structural signatures and crystallography were confirmed using conventional and high resolution transmission electron microscopy, and electron diffraction. Optical spectroscopy demonstrated that the particles display quantum-confinement effects. This research is a fundamental demonstration of the power of combining biochemical and solid-state processing techniques.

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Electron Microscopy of Mesoscale Arrays of Quantum-Confined CdS Nanoparticles Formed on DNA Templates

  • Russell F. Pinizzotto (a1), Young G. Rho (a1), Yandong Chen (a1), Robert M. Pirtle (a2), Irma L. Pirtle (a2), Jeffery L. Coffer (a3) and Xin Li (a3)...

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