title: Micro-dressing of a carbon nanotube array with MoS2 gauze.
abstract: Few-layer MoS2 film has been successfully assembled over an array of CNTs. Using different focused laser beams with different wavelengths, site selective patterning of either the MoS2 film or the supporting CNT array is achieved. This paves the way for applications and investigations into the fundamental properties of the hybrid MoS2/CNT material with a controlled architecture. Through Raman mapping, straining and electron doping of the MoS2 film as a result of interaction with the supporting CNT array are detected. The role of the MoS2 film was further emphasized with a lower work function being detected from Ultra-violet Photoelectron Spectrsocopy (UPS) measurements of the hybrid material, compared to the CNT array. The effect of the changes in the work function was illustrated through the optoelectronic behavior of the hybrid material. At 0 V, 3.49 nA of current is measured upon illuminating the sample with a broad laser beam emitting laser light with a wavelength of 532 nm. With a strong response to external irradiation of different wavelengths, and changes to the power of the excitation source, the hybrid material has shown potential for applications in optoelectronic devices.
authors.affiliation: Department of Physics, Blk S12, Faculty of Science, National University of Singapore, 2 Science Drive 3, Singapore 117542. physowch@nus.edu.sg.
authors.forename: Sharon Xiaodai
authors.initials: SX
authors.lastname: Lim
authors.forename: Kah Whye
authors.initials: KW
authors.lastname: Woo
authors.forename: Junju
authors.initials: J
authors.lastname: Ng
authors.forename: Junpeng
authors.initials: J
authors.lastname: Lu
authors.forename: Siu Yi
authors.initials: SY
authors.lastname: Kwang
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zhang
authors.forename: Eng Soon
authors.initials: ES
authors.lastname: Tok
authors.forename: Chorng-Haur
authors.initials: CH
authors.lastname: Sow