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) |
|---|---|
| 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