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Engineering Single Nanopores on Gold Nanoplates by Tuning Crystal Screw Dislocation
Author(s) -
Zhai Yueming,
Zhang Fan,
Zhang Bo,
Gao Xiaohu
Publication year - 2017
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.201703102
Subject(s) - nanopore , materials science , nanotechnology , nanostructure , nanometre , dislocation , template , etching (microfabrication) , colloidal gold , nanoparticle , composite material , layer (electronics)
Compared with the large variety of solid gold nanostructures, synthetic approaches for their hollow counterparts are limited, largely confined to chemical and irradiation‐based etching of preformed nanostructures. In particular, the preparation of through nanopore structures is extremely challenging. Here, a unique strategy for direct synthesis of gold nanopores in solution without the need for sacrificial templates or postsynthesis processing is reported. By controlling the degree of crystal screw dislocation, a single through pore with diameter ranging from sub‐nanometer to tens of nanometers, in the center of large gold nanoplates, can be engineered with precision. Ionic current rectification behaviors are observed using the gold nanopore, potentially enabling new capabilities in biosensing, sequencing, and imaging.