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Harnessing Colloidal Crack Formation by Flow‐Enabled Self‐Assembly
Author(s) -
Li Bo,
Jiang Beibei,
Han Wei,
He Ming,
Li Xiao,
Wang Wei,
Hong Suck Won,
Byun Myunghwan,
Lin Shaoliang,
Lin Zhiqun
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201700457
Subject(s) - nanotechnology , materials science , photonics , nanomaterials , nanoparticle , electronics , self assembly , engineering , optoelectronics , electrical engineering
Abstract Self‐assembly of nanomaterials to yield a wide diversity of high‐order structures, materials, and devices promises new opportunities for various technological applications. Herein, we report that crack formation can be effectively harnessed by elaborately restricting the drying of colloidal suspension using a flow‐enabled self‐assembly (FESA) strategy to yield large‐area periodic cracks (i.e., microchannels) with tunable spacing. These uniform microchannels can be utilized as a template to guide the assembly of Au nanoparticles, forming intriguing nanoparticle threads. This strategy is simple and convenient. As such, it opens the possibility for large‐scale manufacturing of crack‐based or crack‐derived assemblies and materials for use in optics, electronics, optoelectronics, photonics, magnetic device, nanotechnology, and biotechnology.