Premium
Conformal Nanocoatings with Uniform and Controllable Thickness on Microstructured Surfaces: A General Assembly Route
Author(s) -
Hou Yi,
Wang Zhen,
Cai Chao,
Hao Xi,
Li Dongdong,
Zhao Ning,
Zhao Yiping,
Chen Li,
Ma Hongwei,
Xu Jian
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201704131
Subject(s) - materials science , conformal coating , anti reflective coating , conformal map , nanotechnology , quartz crystal microbalance , nanostructure , nanoparticle , layer (electronics) , coating , adsorption , mathematical analysis , chemistry , mathematics , organic chemistry
Abstract Assembling nanoparticles (NPs) on various surfaces are intensively investigated for the construction of functional nanocoatings; however, it is still a challenge to fabricate conformal nanocoatings uniformly on surfaces having micro‐ or nanostructures. Herein, it is demonstrated that the negatively charged SiO 2 NPs and the positively charged silicon coupling agent can be assembled layer‐by‐layer on the microstructures based on the combination of electrostatic interaction and condensation reaction. Conformal nanocoatings with controllable thickness are formed on the microstructured surfaces with different compositions and morphologies. The formation mechanism is confirmed by using quartz crystal microbalance with dissipation (QCM‐D) to study the assembly process in real time. The universality of this method is illustrated by using other reactive building blocks with opposite charge to build up the conformal nanocoatings. Application in the preparation of antireflective nanocoatings on nonplanar optical materials is demonstrated. This simple, versatile, and scalable strategy for the preparation of conformal nanocoatings is promising for practical applications.