期刊
NANO LETTERS
卷 17, 期 6, 页码 3862-3869出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b01323
关键词
Superlattice; colloidal crystals; field-driven assembly; grazing incidence small-angle X-ray scattering; Ag nanocrystals
类别
资金
- Lawrence Livermore National Laboratory Directed Research and Development Program [16-ERD-033]
- U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- Office of Science, Office of Basic Energy Sciences, the U.S Department of Energy [DE-AC02-05CH11231]
Nanocrystal superlattices are typically fabricated by either solvent evaporation or destabilization methods that require long time periods to generate highly ordered structures. In this paper, we report for the first time the use of electric fields to reversibly drive nanocrystal assembly into superlattices without changing solirent volume or composition, and show that this method only takes 20 min to produce polyhedral colloidal crystals, which would otherwise need days or weeks. This method offers a way to control the lattice constants and degree of preferential orientation for superlattices and can suppress the uniaxial superlattice contraction associated with solvent evaporation. In situ small-angle X-ray scattering experiments indicated that nanocrystal superlattices were formed while solvated, not during drying.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据