Effect of characteristic dimension of surface structure and particles on the contact line motion of sessile suspended droplet evaporation

Yutaka Yamda, Akihiko Horibe

Research output: Contribution to journalConference article

Abstract

The three-phase contact line (TPCL) motion during evaporation of nanofluid sessile droplet was experimentally investigated to reveal the effect of characteristic surface structure and dimensions of contained materials on evaporation profiles. Nano and microstructured surfaces were prepared through chemical treatment and two sizes of SiO2 spherical particles were used as deposition materials. The contact angle and contact base radius profiles were studied through captured side view images and the sessile droplet method. Discontinuous TPCL motion was observed on micro/nano hierarchical structure, while continuous contact line receding during evaporation was seen on nanostructured surface. In addition, nanofluid with low particle concentration showed large contact angle and contact radius jump relative to dense nanofluid. This finding shows that the increase the amount of deposited materials on the TPCL regions should lead the undeformable liquid-vapor interface, and it showed opposite trend compared to the result reported by flat surface. The result found in this study will help to understand the deposition patterns on the superhydrophobic surface which is an important issue for evaporation-driven supraparticles fabrication.

Original languageEnglish
Pages (from-to)699-704
Number of pages6
JournalInternational Heat Transfer Conference
Volume2018-August
Publication statusPublished - Jan 1 2018
Event16th International Heat Transfer Conference, IHTC 2018 - Beijing, China
Duration: Aug 10 2018Aug 15 2018

Fingerprint

Surface structure
Contacts (fluid mechanics)
Evaporation
evaporation
Contact angle
liquid-vapor interfaces
radii
profiles
flat surfaces
trends
fabrication
Vapors
Fabrication
Liquids

Keywords

  • Materials deposition
  • Particles suspension
  • Sessile droplet evaporation
  • Three-phase contact line

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

@article{1c25c44313294f0696c77fe6ec8756a7,
title = "Effect of characteristic dimension of surface structure and particles on the contact line motion of sessile suspended droplet evaporation",
abstract = "The three-phase contact line (TPCL) motion during evaporation of nanofluid sessile droplet was experimentally investigated to reveal the effect of characteristic surface structure and dimensions of contained materials on evaporation profiles. Nano and microstructured surfaces were prepared through chemical treatment and two sizes of SiO2 spherical particles were used as deposition materials. The contact angle and contact base radius profiles were studied through captured side view images and the sessile droplet method. Discontinuous TPCL motion was observed on micro/nano hierarchical structure, while continuous contact line receding during evaporation was seen on nanostructured surface. In addition, nanofluid with low particle concentration showed large contact angle and contact radius jump relative to dense nanofluid. This finding shows that the increase the amount of deposited materials on the TPCL regions should lead the undeformable liquid-vapor interface, and it showed opposite trend compared to the result reported by flat surface. The result found in this study will help to understand the deposition patterns on the superhydrophobic surface which is an important issue for evaporation-driven supraparticles fabrication.",
keywords = "Materials deposition, Particles suspension, Sessile droplet evaporation, Three-phase contact line",
author = "Yutaka Yamda and Akihiko Horibe",
year = "2018",
month = "1",
day = "1",
language = "English",
volume = "2018-August",
pages = "699--704",
journal = "International Heat Transfer Conference",
issn = "2377-424X",

}

TY - JOUR

T1 - Effect of characteristic dimension of surface structure and particles on the contact line motion of sessile suspended droplet evaporation

AU - Yamda, Yutaka

AU - Horibe, Akihiko

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The three-phase contact line (TPCL) motion during evaporation of nanofluid sessile droplet was experimentally investigated to reveal the effect of characteristic surface structure and dimensions of contained materials on evaporation profiles. Nano and microstructured surfaces were prepared through chemical treatment and two sizes of SiO2 spherical particles were used as deposition materials. The contact angle and contact base radius profiles were studied through captured side view images and the sessile droplet method. Discontinuous TPCL motion was observed on micro/nano hierarchical structure, while continuous contact line receding during evaporation was seen on nanostructured surface. In addition, nanofluid with low particle concentration showed large contact angle and contact radius jump relative to dense nanofluid. This finding shows that the increase the amount of deposited materials on the TPCL regions should lead the undeformable liquid-vapor interface, and it showed opposite trend compared to the result reported by flat surface. The result found in this study will help to understand the deposition patterns on the superhydrophobic surface which is an important issue for evaporation-driven supraparticles fabrication.

AB - The three-phase contact line (TPCL) motion during evaporation of nanofluid sessile droplet was experimentally investigated to reveal the effect of characteristic surface structure and dimensions of contained materials on evaporation profiles. Nano and microstructured surfaces were prepared through chemical treatment and two sizes of SiO2 spherical particles were used as deposition materials. The contact angle and contact base radius profiles were studied through captured side view images and the sessile droplet method. Discontinuous TPCL motion was observed on micro/nano hierarchical structure, while continuous contact line receding during evaporation was seen on nanostructured surface. In addition, nanofluid with low particle concentration showed large contact angle and contact radius jump relative to dense nanofluid. This finding shows that the increase the amount of deposited materials on the TPCL regions should lead the undeformable liquid-vapor interface, and it showed opposite trend compared to the result reported by flat surface. The result found in this study will help to understand the deposition patterns on the superhydrophobic surface which is an important issue for evaporation-driven supraparticles fabrication.

KW - Materials deposition

KW - Particles suspension

KW - Sessile droplet evaporation

KW - Three-phase contact line

UR - http://www.scopus.com/inward/record.url?scp=85068341146&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068341146&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85068341146

VL - 2018-August

SP - 699

EP - 704

JO - International Heat Transfer Conference

JF - International Heat Transfer Conference

SN - 2377-424X

ER -