Selective Assembly of Multi-Component Nanosprings and Nanorods

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Abstract:

This communication proposes a new approach to create complex hierarchical nano-to-meso-scale architectures based on the use of biological connector molecules to direct the assembly of uniquely shaped multi-component nanostructures fabricated using glancing angle deposition (GLAD). Multiple sets of 50-nm-wide and 150 to 650-nm-tall Si–Cr/Au multi-stack zigzag nanosprings and nanorods are grown by GLAD on Si substrates. Nanorods, chosen for selective assembly, are detached from the substrate, suspended in an aqueous solution, and their surfaces are selectively functionalized by attaching biotin and streptavidin connector-molecules to the Au-regions. Successive mixing of different suspensions leads to the end-to-end assembly of long and short nanorods. This technique provides the path to build hybrid nano-architectures including nano-honeycombs, nanoladders, and 3D nanorod networks, comprised of controlled material combinations.

Keywords: BIOTIN; GLANCING ANGLE DEPOSITION (GLAD); NANO-ASSEMBLIES; NANORODS; STREPTAVIDIN

Document Type: Short Communication

DOI: http://dx.doi.org/10.1166/jnn.2010.2059

Publication date: March 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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