Simultaneous “Clean-and-Repair” of Surfaces Using Smart Droplets
Abstract
Abstract An autonomous self‐healing system, inspired by transportation processes inherent to biology, is described for materials transportation and repair. The selected model system combines inorganic nanoparticles (NPs) on damaged substrates with functional emulsion droplets that pick up the particles from pristine portions of the substrate and deposit them into damaged regions. The droplets are stabilized by polymer surfactants containing phosphorylcholine groups, a polymer composition selected to impart surfactant properties for droplet stabilization as well as fouling resistance to prevent irreversible droplet adsorption on the substrates. Both the NP pickup (cleaning) and drop off (repair) steps are conducted in a system driven by an imposed flow and characterized by fluorescence microscopy. To evaluate and optimize the efficiency of this NP transportation process, the effect of both the chemical composition of the polymer surfactant and the NP surface chemistry is investigated. Interfacial interactions proved enabling for these NP transportation processes, specifically those involving NP/droplet, NP/substrate, and droplet/substrate interactions. Ultimately, droplets capable of both picking up and dropping off NPs are realized by adjusting fluid/fluid and fluid/substrate interactions, with electrostatic interactions between NPs and droplets proving most effective.
- Publication Date:
- Research Org.:
- Univ. of Massachusetts, Amherst, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE
- OSTI Identifier:
- 1611164
- Alternate Identifier(s):
- OSTI ID: 1488620
- Grant/Contract Number:
- SC0008876; DE‐SC0008876
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Functional Materials
- Additional Journal Information:
- Journal Volume: 29; Journal Issue: 5; Journal ID: ISSN 1616-301X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; chemistry; science & technology - other topics; materials science; physics; clean-and-repair; emulsion droplets; materials self-healing; nanoparticle deposition; zwitterionic polymer
Citation Formats
Sathyan, Ashlin, Yang, Zhefei, Bai, Ying, Kim, Hyunki, Crosby, Alfred J., and Emrick, Todd. Simultaneous “Clean-and-Repair” of Surfaces Using Smart Droplets. United States: N. p., 2018.
Web. doi:10.1002/adfm.201805219.
Sathyan, Ashlin, Yang, Zhefei, Bai, Ying, Kim, Hyunki, Crosby, Alfred J., & Emrick, Todd. Simultaneous “Clean-and-Repair” of Surfaces Using Smart Droplets. United States. https://doi.org/10.1002/adfm.201805219
Sathyan, Ashlin, Yang, Zhefei, Bai, Ying, Kim, Hyunki, Crosby, Alfred J., and Emrick, Todd. Thu .
"Simultaneous “Clean-and-Repair” of Surfaces Using Smart Droplets". United States. https://doi.org/10.1002/adfm.201805219. https://www.osti.gov/servlets/purl/1611164.
@article{osti_1611164,
title = {Simultaneous “Clean-and-Repair” of Surfaces Using Smart Droplets},
author = {Sathyan, Ashlin and Yang, Zhefei and Bai, Ying and Kim, Hyunki and Crosby, Alfred J. and Emrick, Todd},
abstractNote = {Abstract An autonomous self‐healing system, inspired by transportation processes inherent to biology, is described for materials transportation and repair. The selected model system combines inorganic nanoparticles (NPs) on damaged substrates with functional emulsion droplets that pick up the particles from pristine portions of the substrate and deposit them into damaged regions. The droplets are stabilized by polymer surfactants containing phosphorylcholine groups, a polymer composition selected to impart surfactant properties for droplet stabilization as well as fouling resistance to prevent irreversible droplet adsorption on the substrates. Both the NP pickup (cleaning) and drop off (repair) steps are conducted in a system driven by an imposed flow and characterized by fluorescence microscopy. To evaluate and optimize the efficiency of this NP transportation process, the effect of both the chemical composition of the polymer surfactant and the NP surface chemistry is investigated. Interfacial interactions proved enabling for these NP transportation processes, specifically those involving NP/droplet, NP/substrate, and droplet/substrate interactions. Ultimately, droplets capable of both picking up and dropping off NPs are realized by adjusting fluid/fluid and fluid/substrate interactions, with electrostatic interactions between NPs and droplets proving most effective.},
doi = {10.1002/adfm.201805219},
journal = {Advanced Functional Materials},
number = 5,
volume = 29,
place = {United States},
year = {Thu Dec 20 00:00:00 EST 2018},
month = {Thu Dec 20 00:00:00 EST 2018}
}
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