title: Room temperature rubbing for few-layer two-dimensional thin flakes directly on flexible polymer substrates.
abstract: The functional layers of few-layer two-dimensional (2-D) thin flakes on flexible polymers for stretchable applications have attracted much interest. However, most fabrication methods are "indirect" processes that require transfer steps. Moreover, previously reported "transfer-free" methods are only suitable for graphene and not for other few-layer 2-D thin flakes. Here, a friction based room temperature rubbing method is proposed for fabricating different types of few-layer 2-D thin flakes (graphene, hexagonal boron nitride (h-BN), molybdenum disulphide (MoS₂), and tungsten disulphide (WS₂)) on flexible polymer substrates. Commercial 2-D raw materials (graphite, h-BN, MoS₂, and WS₂) that contain thousands of atom layers were used. After several minutes, different types of few-layer 2-D thin flakes were fabricated directly on the flexible polymer substrates by rubbing procedures at room temperature and without any transfer step. These few-layer 2-D thin flakes strongly adhere to the flexible polymer substrates. This strong adhesion is beneficial for future applications.
authors.affiliation: School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
authors.forename: Shenglin
authors.initials: S
authors.lastname: Jiang
authors.forename: Wenli
authors.initials: W
authors.lastname: Zhou
authors.forename: Xiangshui
authors.initials: X
authors.lastname: Miao
authors.forename: Yike
authors.initials: Y
authors.lastname: Zeng
authors.forename: Guangzu
authors.initials: G
authors.lastname: Zhang
authors.forename: Sisi
authors.initials: S
authors.lastname: Liu
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