Abstract
Water microdroplets containing graphene oxide and a second solute are shown to spontaneously segregate into sack-cargo nanostructures upon drying. Analytical modeling and molecular dynamics suggest the sacks form when slow-diffusing graphene oxide preferentially accumulates and adsorbs at the receding air-water interface, followed by capillary collapse. Cargo-filled graphene nanosacks can be nanomanufactured by a simple, continuous, scalable process and are promising for many applications where nanoscale materials should be isolated from the environment or biological tissue.
Original language | English (US) |
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Pages (from-to) | 1996-2002 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 12 |
Issue number | 4 |
DOIs | |
State | Published - Apr 11 2012 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering
Keywords
- Graphene
- biocompatibility
- core-shell structures
- encapsulation
- folding
- graphene oxide