Modified coffee rings for 1-D electronics: Size considerations

We study modified coffee rings formed by different size nanowires as the solute where they are dispersed evaporates for their applications for 1D, anisotropic conductivity. Nanocellulose nanowires 5nm in diameter and 5 μm in length in water and silver nanowires (AgNWs) 135 ± 15 nm in diameter and 35...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2017-03, Vol.646 (1), p.26-30
Main Authors: Martínez-Miranda, L. J., Blyskal, Andrew, Michaels, Christina K., Jang, Soo-Hwan, Hu, Liangbing
Format: Article
Language:English
Subjects:
Alcohols
Coffee
coffee rings
Deposition
Evaporation
Flow velocity
Isopropanol
lyotropic liquid crystalline
Nanostructure
Nanowires
Nanowires (NW)
NW size
phase diagram
Photolithography
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Summary:We study modified coffee rings formed by different size nanowires as the solute where they are dispersed evaporates for their applications for 1D, anisotropic conductivity. Nanocellulose nanowires 5nm in diameter and 5 μm in length in water and silver nanowires (AgNWs) 135 ± 15 nm in diameter and 35 ± 15 μm in length in isopropyl alcohol are deposited on photolithographed gratings of varying depth (0.5, 0.35 and 0.25 μm) with a width of 10 μm. The deposition results in a modified coffee ring that has a structure whose resulting phase varies as a function of the nanowire concentration and the depth of the grating. We find that there is a dependence on the length of the NWs on the flow velocity.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2017.1283919