title: Coalescence and polygonization of Au nanoparticles embedded in liquid-crystalline lipid membrane.
abstract: Coarsening behavior of Au nanoparticles (AuNPs) embedded in a liquid crystalline lipid (1,2-dioleoyl-3-trimethylammonium-propane, DOTAP) membrane was investigated by heat treating the AuNP-embedded DOTAP membrane at 80 degrees C with 15% and 80% relative humidity (RH). The coarsening rate was (D) to approximately t0.6 regardless of the humidity; however, the spatial distribution and the coarsening mechanism differed depending on the humidity. In addition, extended treatment at 15% RH resulted in formation of large polygonized AuNPs from the lipid segregation.
authors.affiliation: Division of Materials Science and Engineering, Hanyang University, Seoul, 133-791, Korea.
authors.forename: Seung Jae
authors.initials: SJ
authors.lastname: Lee
authors.forename: Hyeun Hwan
authors.initials: HH
authors.lastname: An
authors.forename: Won Bae
authors.initials: WB
authors.lastname: Han
authors.forename: Hee-Soo
authors.initials: HS
authors.lastname: Kim
authors.forename: Yongdeok
authors.initials: Y
authors.lastname: Kim
authors.forename: Chong Seung
authors.initials: CS
authors.lastname: Yoon