Publication detail

Dynamic characteristics of water spreading over laser-textured aluminum alloy surfaces

RAUDENSKÝ, M. BARTULI, E. KUZNETSOV, G.V. FEOKTISTOV, D.V. ORLOVA, E.G. ZYKOV, I.Y. ZHUIKOV, A.V.

Original Title

Dynamic characteristics of water spreading over laser-textured aluminum alloy surfaces

Type

journal article in Web of Science

Language

English

Original Abstract

Laser texturing has great potential for controlling wetting properties as well as spreading dynamics of liquid small volumes on technological metal surfaces. In this work, nanosecond pulse laser was used to create some ordered and anisotropic textures on aluminum alloy surfaces. The dynamic characteristics and contact angle hysteresis were obtained by increasing and decreasing the droplet volume. In this wetting/dewetting cycle, we recorded fluctuational movements of the three-phase contact line over the surfaces with an ordered texture when the capillary number tends to zero. These movements are caused by activity of forces leading to fluid circulation in the droplet, as well as inertia and gravity. To determine the contact angle hysteresis when the three-phase contact line fluctuates, we developed a new approach. We showed that the contact angle hysteresis depends on the droplet state (the presence of air cushions in the cavities in a thin near-surface layer) largely than on the roughness. We found the influence of repeated wetting cycles (multiple advancing and receding liquid movement) on the dynamic characteristics of water spreading over the laser-textured aluminum alloy surfaces. The molecular-kinetic and hydrodynamic models were used to interpret the liquid movement over the surfaces with ordered and anisotropic textures.

Keywords

Three-phase contact line; Aluminum alloy; Contact angle hysteresis; Fluctuations; Wetting; Spreading

Authors

RAUDENSKÝ, M.; BARTULI, E.; KUZNETSOV, G.V.; FEOKTISTOV, D.V.; ORLOVA, E.G.; ZYKOV, I.Y.; ZHUIKOV, A.V.

Released

20. 10. 2020

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

0927-7757

Periodical

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Year of study

603

Number

125253

State

Kingdom of the Netherlands

Pages from

1

Pages to

11

Pages count

11

URL

https://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=D6dk2Su8QCzUB3OpXAV&page=1&doc=1

BibTex

@article{BUT170220,
  author="Miroslav {Raudenský} and Erik {Bartuli}",
  title="Dynamic characteristics of water spreading over laser-textured aluminum alloy surfaces",
  journal="Colloids and Surfaces A: Physicochemical and Engineering Aspects",
  year="2020",
  volume="603",
  number="125253",
  pages="1--11",
  doi="10.1016/j.colsurfa.2020.125253",
  issn="0927-7757",
  url="https://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=D6dk2Su8QCzUB3OpXAV&page=1&doc=1"
}