Electrohydrodynamic printing for scalable MoS2 flake coating: application to gas sensing device. (23rd September 2016)

• Record Type: Journal Article
• Authors: Lim, Sooman; Cho, Byungjin; Bae, Jaehyun; Kim, Ah Ra; Lee, Kyu Hwan; Kim, Se Hyun; Hahm, Myung Gwan; Nam, Jaewook
• Is Part Of: Nanotechnology. Volume 27:Number 43(2016)
• Publication Date: 2016-09-23
• Subjects: molybdenum disulfide flake -- electrohydrodynamic printing -- liquid exfoliation -- gas sensor; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/0957-4484/27/43/435501
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Scalable sub-micrometer molybdenum disulfide ( MoS 2 ) flake films with highly uniform coverage were created using a systematic approach. An electrohydrodynamic (EHD) printing process realized a remarkably uniform distribution of exfoliated MoS 2 flakes on desired substrates. In combination with a fast evaporating dispersion medium and an optimal choice of operating parameters, the EHD printing can produce a film rapidly on a substrate without excessive agglomeration or cluster formation, which can be problems in previously reported liquid-based continuous film methods. The printing of exfoliated MoS 2 flakes enabled the fabrication of a gas sensor with high performance and reproducibility for NO 2 and NH 3 .