Impact of nanodroplets on cone-textured surfaces

Liu, Hanyi; Zhang, Jun; Luo, Jiao; Wen, Dongsheng

doi:10.1103/physreve.107.065101

Phys. Rev. E

2023

DOI: 10.1103/physreve.107.065101

|View full text |Cite

Impact of nanodroplets on cone-textured surfaces

Hanyi Liu

Jun Zhang

Jiao Luo

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Bounce and contact mode regimes for drop impact on smooth surfaces: The influence of gas kinetics and electrostatics

Liu,

Zhang

2024

Physics of Fluids

View full text Add to dashboard Cite

When liquid drops impact on solid surfaces, an air layer forms in between the drop and the surface, acting as a cushion to mitigate the impact. In this work, we focus on delineating the bounce and contact mode regimes of impacting drops on smooth surfaces, specifically discerning whether drops rebound from the air layer or make contact with the solid surfaces, and pinpointing the precise contact modes between the drop and solid surfaces by resolving the gas film evolution and rupture. Our simulation model incorporates gas kinetics and electrostatics effects, both of which have been validated by experiments documented in the literature or theoretical models regarding thin film instabilities. We undertake a comprehensive review and categorization of the contact modes and elucidate how they change under different conditions of impact velocities, ambient pressures, and electric field intensities. We also provide some perspectives on the regime map for the lubricated surfaces, which contains an unresolved issue that the critical Weber number for bouncing-wetting transition is significantly reduced compared to the solid smooth surfaces like mica. These insights have noteworthy practical implications offering guidance for a wide range of scenarios, from normal-pressure environments to low-pressure conditions at high altitudes, encompassing high electric field conditions such as nanogenerators as well as low electric field conditions resembling glass surfaces with static electricity.

show abstract

Bounce and contact mode regimes for drop impact on smooth surfaces: The influence of gas kinetics and electrostatics

Liu,

Zhang

2024

Physics of Fluids

View full text Add to dashboard Cite

show abstract

Impact forces of drops falling on inclined superhydrophobic surfaces

Xu,

Zhang,

2024

Applied Physics Letters

View full text Add to dashboard Cite

Due to its scientific significance and practical applications, the common natural phenomena of drops impacting on inclined surfaces have attracted extensive attention. Previous research has primarily reported the distinct morphology and dynamic behavior of drops impacting on inclined superhydrophobic surfaces compared to the impact on the horizontal scenarios. One distinguished feature of drop impingement on inclined surfaces is the asymmetric shapes of the drop, which accounts for different underlying physics compared to the impacts on horizontal surfaces. However, the impact forces exerted by the inclined surface during impingement have remained unknown. In this study, we present a direct measurement of the normal impact force of drops on inclined superhydrophobic surfaces using a high-precision force sensor. We observe the temporal evolution of the force and identify two peak forces occurring during the spreading and retraction stages, respectively. Our findings lie on investigating the variation of these two peak forces with the normal Weber number, based on scaling arguments. We reveal that the asymmetrical morphology of the drop must be taken into account especially in the scenarios of large impact velocities and large tilt angles to revise the theoretical model of the second peak force. The physics reported in this work sheds new light on the impingement of drops.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Impact of nanodroplets on cone-textured surfaces

Cited by 2 publications

References 66 publications

Bounce and contact mode regimes for drop impact on smooth surfaces: The influence of gas kinetics and electrostatics

Bounce and contact mode regimes for drop impact on smooth surfaces: The influence of gas kinetics and electrostatics

Impact forces of drops falling on inclined superhydrophobic surfaces

Contact Info

Product

Resources

About