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Directed Growth of Virus Nanofilaments on a Superhydrophobic Surface.
- Source :
-
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2015 Jun 17; Vol. 7 (23), pp. 12373-9. Date of Electronic Publication: 2015 Jan 20. - Publication Year :
- 2015
-
Abstract
- The evaporation of single droplets of colloidal tobacco mosaic virus (TMV) nanoparticles on a superhydrophobic surface with a hexagonal pillar-pattern results in the formation of coffee-ring type residues. We imaged surface features by optical, scanning electron, and atomic force microscopies. Bulk features were probed by raster-scan X-ray nanodiffraction. At ∼100 pg/μL nanoparticle concentration, the rim of the residue connects to neighboring pillars via fibrous extensions containing flow-aligned crystalline domains. At ∼1 pg/μL nanoparticle concentration, nanofilaments of ≥80 nm diameter and ∼20 μm length are formed, extending normal to the residue-rim across a range of pillars. X-ray scattering is dominated by the nanofilament form-factor but some evidence for crystallinity has been obtained. The observation of sheets composed of stacks of self-assembled nanoparticles deposited on pillars suggests that the nanofilaments are drawn from a structured droplet interface.
Details
- Language :
- English
- ISSN :
- 1944-8252
- Volume :
- 7
- Issue :
- 23
- Database :
- MEDLINE
- Journal :
- ACS applied materials & interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 25602601
- Full Text :
- https://doi.org/10.1021/am507509z