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Thermally Induced Bending of ReS 2 Nanowalls
Author(s) -
Zhang Qin,
Wang Wenjie,
Zhang Jiaqian,
Zhu Xiaohui,
Fu Lei
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.201704585
Subject(s) - materials science , wetting , bending , polymer , microfluidics , composite material , actuator , durability , nanotechnology , engineering , electrical engineering
Abstract Among the variety of stimuli‐responsive materials, temperature‐responsive materials (TRMs) can adapt to the surrounding environment in the presence of a thermal stimulus, and they have attracted considerable attention in sensors, actuators, and surface engineering. However, polymers, as the most representative TRMs, are far from ideal with respect to long‐term reliability and durability. Here, for the first time, an inorganic material, ReS 2 , is analyzed, which possesses an unexpected temperature‐responsive behavior that is triggered by stable and reversible thermally induced bending (TIB). Due to thermal fluctuations in the ReS 2 layers, intrinsic ripples tend to aggravate rapidly with rising temperature. Then, the weak interlayer interaction of ReS 2 is further weakened, thus resulting in interlayer sliding. Due to a decrease in bending rigidity with increasing temperature, out‐of‐plane bending spontaneously occurs in the ReS 2 layers. Interestingly, this TIB of ReS 2 can recover to its initial configuration when the temperature drops, which is further confirmed by the reversible wetting measurement. Above all, the TIB behavior of ReS 2 exhibits great potential in smart applications, such as smart windows and microfluidic devices, and fills the significant gaps of inorganic TRMs.