Investigation of MoS2 and Graphene Nanosheets by Magnetic Force Microscopy

被引：120

作者：

Li, Hai ^{[1
]}

Qi, Xiaoying ^{[2
]}

Wu, Jumiati ^{[1
]}

Zeng, Zhiyuan ^{[1
]}

Wei, Jun ^{[2
]}

Zhang, Hua ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Singapore Inst Mfg Technol, Singapore 638075, Singapore

来源：

ACS NANO | 2013年 / 7卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

magnetic force microscopy; MoS2; graphene; nanosheet; phase shift; SINGLE-LAYER MOS2; OPTICAL-IDENTIFICATION; NANOPARTICLES; OXIDE; MICA;

D O I：

10.1021/nn400443u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

For the first time, magnetic force microscopy (MFM) is used to characterize the mechanically exfoliated single- and few-layer MoS2 and graphene nanosheets. By analysis of the phase and amplitude shifts, the magnetic response of MoS2 and graphene nanosheets exhibits the dependence on their layer number. However, the solution-processed single-layer MoS2 nanosheet shows the reverse magnetic signal to the mechanically exfoliated one, and the graphene oxide nanosheet has not shown any detectable magnetic signal. Importantly, graphene and MoS2 flakes become nonmagnetic when they exceed a certain thickness.

引用

页码：2842 / 2849

页数：8

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