Spontaneous Motion and Rotation of Acid Droplets on the Surface of a Liquid Metal

doi:10.1021/acs.langmuir.1c00455

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Spontaneous Motion and Rotation of Acid Droplets on the Surface of a Liquid Metal
	Wang ZL(王占龙)1,2; Wang XH(王晓荷)1,2; Miao Q(苗青)1,2; Gao FF(高斐斐)1,2; Zhao YP(赵亚溥)1,2
刊名	LANGMUIR
	2021-04-13
卷号	37 期号:14 页码:4370-4379
ISSN号	0743-7463
DOI	10.1021/acs.langmuir.1c00455
通讯作者	Zhao, Ya-Pu(yzhao@imech.ac.cn)
英文摘要	Self-propulsion of droplets is of great significance in many fields. The spontaneous horizontal motion and self-jumping of droplets have been well realized in various ways. However, there is still a lack of an effective method to enable a droplet to rotate spontaneously and steadily. In this paper, by employing an acid droplet and a liquid metal, the spontaneous and steady rotation of droplets is achieved. For an acid droplet, it may spontaneously move when it is deposited on the surface of the liquid metal. By adjusting experimental parameters to the proper range, the self-rotation of droplet happens. This phenomenon originates from the fluctuation of the droplet boundary and the collective movement of bubbles that are generated by the chemical reactions between the acid droplet and liquid metal. This rotation has a simpler implementation method and more steady rotation state. Its angular velocity is much higher than that driven by other mechanisms. Moreover, the movements of acid droplets on the liquid metal are classified according to experimental conditions. The internal flow fields, the movements and distribution of bubbles, and the fluctuation of the droplet boundary are also explored and discussed. The theoretical model describing the rotational droplet is given. Our work may deepen the understanding of the physical system transition affected by chemical reactions and provide a new way for the design of potential applications, e.g., micro- and nanodevices.
分类号	二类
资助项目	National Natural Science Foundation of China (NSFC)[11988102] ; NSFC[12032019] ; NSFC[51861145314] ; NSFC[11872363] ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program[XDB22040401]
WOS关键词	WATER ; DROPS ; INTERFACE ; TRANSPORT
WOS研究方向	Chemistry ; Materials Science
语种	英语
WOS记录号	WOS:000640891400036
资助机构	National Natural Science Foundation of China (NSFC) ; NSFC ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program
其他责任者	Zhao, Ya-Pu
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86581]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Wang ZL,Wang XH,Miao Q,et al. Spontaneous Motion and Rotation of Acid Droplets on the Surface of a Liquid Metal[J]. LANGMUIR,2021,37(14):4370-4379.
APA	王占龙,王晓荷,苗青,高斐斐,&赵亚溥.(2021).Spontaneous Motion and Rotation of Acid Droplets on the Surface of a Liquid Metal.LANGMUIR,37(14),4370-4379.
MLA	王占龙,et al."Spontaneous Motion and Rotation of Acid Droplets on the Surface of a Liquid Metal".LANGMUIR 37.14(2021):4370-4379.