title: Magnetically mediated vortexlike assembly of gold nanoshells.
abstract: Gold nanoshells currently attract increasing research interests due to the important role in many subjects. For practical applications, random arrangement of the nanoparticles is often unfavored so that the assembly of gold nanoshells is becoming a central issue. We here proposed to utilize time-variant magnetic field to direct the assembly of gold nanoshells. It was discovered that the alternating magnetic field can mediate the vortex-like assembly of gold nanoshells. The mechanism was explored and thought to be relative with the electric field of induction which caused the thermal gradient on the substrate and the electric force. The vortexlike structure as well as the assembly mechanism will play an important role in research and application of gold nanomaterials.
authors.affiliation: State Key Laboratory of Bioelectronics and Jiangsu Key Laboratory of Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210009, P. R. China.
authors.forename: Jianfei
authors.initials: J
authors.lastname: Sun
authors.forename: Jian
authors.initials: J
authors.lastname: Dong
authors.forename: Dongke
authors.initials: D
authors.lastname: Sun
authors.forename: Zhirui
authors.initials: Z
authors.lastname: Guo
authors.forename: Ning
authors.initials: N
authors.lastname: Gu
mesh_terms: D006046:Gold / Q000737:chemistry*; D060526:Magnetic Fields; D057145:Nanoshells / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D006046:Gold