High-precision drop shape analysis (HPDSA) of quasistatic contact angles on silanized silicon wafers with different surface topographies during inclining-plate measurements: Influence of the surface roughness on the contact line dynamics

Heib, Florian; Hempelmann, Rolf; Munief, Walid-Madhat; Ingebrandt, Sven; Fug, Frank; Possart, Wulff; Groß, Katja; Schmitt, Michael

doi:10.1016/j.apsusc.2015.03.032

Cited by 32 publications

(12 citation statements)

References 44 publications

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“…The findings reveal that the solid fraction varies with in 0.4 ≤ f ≤ 0.6; however, statistically, over 90% of the data remains within the range of 0.6 ≥ f ≥ 0.57 and the average value of the solid fraction is in the order of f = 0.58. Moreover, several tests are carried out for the water droplet contact angle measurements on the crystallized surface in line with the previous studies 22 , 23 to ensure the correct measurement of the droplet contact angle. Table 3 gives the droplet receding and advancing angles, and contact angle hysteresis for various inclination angles.…”

Section: Resultsmentioning

confidence: 93%

“…The sessile drop tests were conducted on the crystallized sample surfaces using a goniometer (Kyowa model - DM 501) through which the water droplet contact angle was measured incorporating the technique proposed in the previous studies 22 , 23 . High-precision drop shape analysis (HPDSA) was incorporated in the measurements 22 , 23 . The water droplet contact angle is found to be varying from 134° to 136°.…”

Section: Experimental and Validation Of Flow Velocity Inside Dropletmentioning

confidence: 99%

“…The water droplet contact angle is found to be varying from 134° to 136°. A test rig was designed and realized to investigate the droplet pinning on the hydrophobic surface 22 ; in which case, the data produced were enabled to analyze the dynamic behavior of the droplets on the inclined hydrophobic surface. To monitor and record the droplet geometric feature on the inclined hydrophobic surface with different angles, Dantec Dynamics (SpeedSense 9040) high-speed camera was utilized.…”

Section: Experimental and Validation Of Flow Velocity Inside Dropletmentioning

confidence: 99%

See 2 more Smart Citations

A Water Droplet Pinning and Heat Transfer Characteristics on an Inclined Hydrophobic Surface

Al‐Sharafi

Yilbaş

Ali

et al. 2018

Sci Rep

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A water droplet pinning on inclined hydrophobic surface is considered and the droplet heat transfer characteristics are examined. Solution crystallization of polycarbonate is carried out to create hydrophobic characteristics on the surface. The pinning state of the water droplet on the extreme inclined hydrophobic surface (0° ≤ δ ≤ 180°, δ being the inclination angle) is assessed. Heat transfer from inclined hydrophobic surface to droplet is simulated for various droplet volumes and inclination angles in line with the experimental conditions. The findings revealed that the hydrophobic surface give rise to large amount of air being trapped within texture, which generates Magdeburg like forces between the droplet meniscus and the textured surface while contributing to droplet pinning at extreme inclination angles. Two counter rotating cells are developed for inclination angle in the range of 0° < δ < 20° and 135° < δ < 180°; however, a single circulation cell is formed inside the droplet for inclination angle of 25° ≤ δ ≤ 135°. The Nusselt number remains high for the range of inclination angle of 45° ≤ δ ≤ 135°. Convection and conduction heat transfer enhances when a single and large circulation cell is formed inside the droplet.

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Section: Resultsmentioning

confidence: 93%

Section: Experimental and Validation Of Flow Velocity Inside Dropletmentioning

confidence: 99%

Section: Experimental and Validation Of Flow Velocity Inside Dropletmentioning

confidence: 99%

See 1 more Smart Citation

A Water Droplet Pinning and Heat Transfer Characteristics on an Inclined Hydrophobic Surface

Al‐Sharafi

Yilbaş

Ali

et al. 2018

Sci Rep

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“…During the synthesizing of silica particles, orthosilicate (TEOS) is used and the surface roughness of the particles can be altered slightly by the functionalized shell and the cell size increases slightly in the region of spongy structures. 41,42 This is, mainly, caused by the condensing units of monomer, which can grow at a faster rate than the nucleation rate. 43 This, in turn, enhances the agglomeration of functionalized silica particles.…”

Section: Resultsmentioning

confidence: 99%

Reversible exchange of wetting state of a hydrophobic surface via phase change material coating

et al. 2018

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“…The surface has a specific structure, generally porous, which leads to an increased wetting capacity of the liquids. A special influence also has the quality of the surface, implicitly roughness [17].…”

Section: Experimental Partmentioning

confidence: 99%

Analysis of Contact Angle for Metallic Materials in Wastewater Pumps

Savin¹,

Nejneru²,

Tugui³

et al. 2019

Rev. Chim.

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Immersed wastewater pumps work in aggressive corrosive environments and physicochemical phenomena of corrosion and erosion take place at the liquid-solid interface. Due to the type of interaction between the two media when the basic metallic material is hydrophobic, corrosion phenomena can occur with the erosion due to the movement of the solid particles in the liquid. If the liquid is exposed to the hydrophilic base material, the corrosion phenomena occur in a laminar layer, having partial protection role. In this paper, the contact angle between the metals forming the pump components and the different corrosive media with different composition and pH was measured.

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High-precision drop shape analysis (HPDSA) of quasistatic contact angles on silanized silicon wafers with different surface topographies during inclining-plate measurements: Influence of the surface roughness on the contact line dynamics

Cited by 32 publications

References 44 publications

A Water Droplet Pinning and Heat Transfer Characteristics on an Inclined Hydrophobic Surface

A Water Droplet Pinning and Heat Transfer Characteristics on an Inclined Hydrophobic Surface

Reversible exchange of wetting state of a hydrophobic surface via phase change material coating

Analysis of Contact Angle for Metallic Materials in Wastewater Pumps

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