Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed

doi:10.3390/mi13040555

	Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed
	Zhou, Le 1; Wei, Yi 1,2; Zhang, Hongwen 1; Huang, Zhulin 1; Zhu, Shuyi 1,2; Zhao, Zhipeng 1,2; Guo, Yujing 1,2; Fu, Hao 1,2; Zhao, Qian 1; Cai, Weiping 1,2
刊名	MICROMACHINES
	2022-04-01
卷号	13
关键词	Pt-PS micromotors plasma etching surface roughening Pt-pushed motion speed enhancement
DOI	10.3390/mi13040555
通讯作者	Zhang, Hongwen(hwzhang@issp.ac.cn) ; Cai, Weiping(wpcai@issp.ac.cn)
英文摘要	Spherical Janus micromotors (SJMs) have attracted much attention, and their high-speed motion is highly desired due to their various potential applications. However, the conventional template-deposition method often leads to an active Pt coating with a smooth surface, which is unbeneficial to speed enhancement in terms of catalytic reaction. Here, a facile surface roughening method is presented to fabricate the Pt-polystyrene (PS) SJMs with rough Pt surface (or Pt-r-PS SJMs) by plasma-etching the PS colloidal monolayer and then depositing Pt. The Pt-r-PS SJMs can exhibit directional motion pushed by the Pt in the various H2O2 solutions, and they show much higher motion speeds than the Pt-PS SJMs with smooth Pt surfaces at the same H2O2 concentration. The Pt-pushed motion is related to the locally asymmetric catalytic reaction of the Pt coating on PS. The speed is also associated with the surface roughness of the Pt coating. The Pt film with a rough surface causes enhanced motion speed due to the improvement of reaction catalytic activity. This work presents a new route to enhancing the motor motion speed, which is of significance in designing micromotors with high-speed motion.
资助项目	Natural Science Foundation of China[51971209] ; Natural Science Foundation of China[11974352] ; Natural Science Foundation of China[51771182] ; Natural Science Foundation of China[52072373] ; CASHIPS Director's Fund[BJPY2021B04Y] ; CASHIPS Director's Fund[YZJJ2021QN24]
WOS关键词	AUTONOMOUS MOVEMENT ; FABRICATION
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000786031200001
资助机构	Natural Science Foundation of China ; CASHIPS Director's Fund
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128633]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Hongwen; Cai, Weiping
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Anhui Key Lab Nanomat & Nanotechnol,HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Le,Wei, Yi,Zhang, Hongwen,et al. Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed[J]. MICROMACHINES,2022,13.
APA	Zhou, Le.,Wei, Yi.,Zhang, Hongwen.,Huang, Zhulin.,Zhu, Shuyi.,...&Cai, Weiping.(2022).Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed.MICROMACHINES,13.
MLA	Zhou, Le,et al."Surface Roughening of Pt-Polystyrene Spherical Janus Micromotors for Enhanced Motion Speed".MICROMACHINES 13(2022).