24 May 2012 DNA: multiple architectures for use in electronics applications
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Abstract
A methodology that allows for the coupling of biology and electronic materials is presented, where double stranded DNA will ultimately serve as a template for electronic material growth. Self-assembled DNA structures allow for a variety of patterns to be achieved on the nanometer size scale that is difficult to achieve using conventional patterning techniques. DNA self assembly under non-aqueous conditions has yet to be presented in literature, and is necessary if unwanted oxidation of certain electronic substrates is to be avoided. Solubilization of the DNA in non-aqueous solvents is achieved by replacing charge stabilizing salts with the surfactant cetyl trimethyl ammonium chloride (CTAC). Herein, the procedures for the creation of self-assembled DNA nanostructures in aqueous and non-aqueous media are described, and these structures are subsequently deposited (drop cast, spin cast, and physically adsorbed) onto freshly cleaved mica or silicon wafers. The DNA architectures are characterized either in solution (circular dichroism spectroscopy (CD)) or on the surface (AFM). These studies illustrate the retention of DNA hierarchical structure under both conditions and this data will be presented by observing the structures using AFM imaging and CD spectroscopic studies
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Thomas J. Proctor, Thomas J. Proctor, Amethist S. Finch, Amethist S. Finch, } "DNA: multiple architectures for use in electronics applications", Proc. SPIE 8377, Energy Harvesting and Storage: Materials, Devices, and Applications III, 83770U (24 May 2012); doi: 10.1117/12.919667; https://doi.org/10.1117/12.919667
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