Abstract
The use of superhydrophobic surfaces (SHSs) is now emerging as an attractive platform for the realization of one-dimensional (1D) nanostructures with potential applications in many nanotechnological and biotechnological fields. To this purpose, a strict control of the nanostructures size and their spatial arrangement is highly required. However, these parameters may be strongly dependent on the complex evaporation dynamics of the sessile droplet on the SHS. In this work, we investigated the effect of the evaporation dynamics on the size and the spatial arrangement of self-assembled 1D DNA bundles. Our results reveal that different arrangements and bundle size distributions may occur depending on droplet evaporation stage. These results contribute to elucidate the formation mechanism of 1D nanostructures on SHSs.
Highlights
One-dimensional (1D) nanostructures such as polymeric, small molecules and inorganic types are currently under much investigation for their unique mechanical, optical, and electronic properties, as well as possible applications in design and realization of novel biomedical devices [1]
The behavior of water drops deposited on superhydrophobic surfaces under evaporation conditions consists of two states: either the drop sits on the tops of the pillars
We investigated the size distribution and the spatial arrangement of self-assembled DNA bundles formed by droplet evaporation on superhydrophobic surfaces
Summary
One-dimensional (1D) nanostructures such as polymeric, small molecules and inorganic types are currently under much investigation for their unique mechanical, optical, and electronic properties, as well as possible applications in design and realization of novel biomedical devices [1]. Over the past 20 years, most of the research efforts have been devoted to the synthesis of 1D nanostructures. Luca Businaro and Marco De Spirito share equal credit for senior authorship. Businaro Istituto di Fotonica e Nanotecnologie-CNR, Via Cineto Romano 42, 00156 Rome, Italy
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