Colloid mobilization by fluid displacement fronts in channels

Lazouskaya, Volha; Wang, Lian‐Ping; Or, Dani; Wang, Gang; Caplan, Jeffrey; Jin, Yan

doi:10.1016/j.jcis.2013.05.078

Cited by 63 publications

(55 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach has since been adopted, e.g. by works which have had in mind applications in environmental sciences [15], and, perhaps more relevant to our case, in the intricate cleaning technology of the semiconductor industry [16]. The detachment of MWNTs specifically has also been investigated experimentally [17], but under such conditions that the liquid interface played no role.…”

Section: Interfacial Forces As a Factor In Particle Detachmentmentioning

confidence: 99%

On-chip purification via liquid immersion of arc-discharge synthesized multiwalled carbon nanotubes

et al. 2016

View full text Add to dashboard Cite

Section: Interfacial Forces As a Factor In Particle Detachmentmentioning

confidence: 99%

On-chip purification via liquid immersion of arc-discharge synthesized multiwalled carbon nanotubes

et al. 2016

View full text Add to dashboard Cite

“…According to the literature22, F γ will reach its maximum when δ = ( π + α )/2. Thus, the horizontal component can be obtained as…”

Section: Theoretical Considerationsmentioning

confidence: 99%

Self-cleaning of Surfaces: the Role of Surface Wettability and Dust Types

Quan

Zhang

et al. 2016

Sci Rep

117

View full text Add to dashboard Cite

The self-cleaning property is usually connected to superhydrophobic surfaces (SHSs) where the dust particles can be easily removed by the rolling motion of droplets. It seems that superhydrophobicity (its durability is questionable nowadays) is a necessity. However here, it is disclosed that self-cleaning can also be realized on an ordinary surface by droplet impinging. The effects of surface wettability and the types of dust particles are considered. The self-cleaning is realized by two steps: (1) the pickup of particles by the water-air interface of an impinging droplet, (2) the release of the impinging droplets from the surface. It can be observed that only the trailing edges of the droplets can pick up particles when the droplets recoil from the inclined surfaces. The hydrophilic surface can also achieve self-cleaning under some conditions. This interesting finding may be helpful for the successful implementation of self-cleaning with common surfaces.

show abstract

“…The detachment of nano-and microscale particles from solid surfaces to liquids is an intricate phenomenon when it occurs at the liquid-air-solid contact line [1,2], a.k.a. the wetting line.…”

Section: Introductionmentioning

confidence: 99%

Experimental studies on the detachment of multi-walled carbon nanotubes by a mobile liquid interface

Hokkanen

Lautala

Flahaut

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. A B S T R A C TRetention and detachment of colloidal particles from surfaces is often considered only in terms of spontaneous chemical dispersion when the surface is already fully submerged. Nevertheless, interfacial processes, where the particles are caught on a mobile liquid contact line by capillary effects are ubiquitous. Theoretical description of such interfacial processes exist for spherical microcolloids, while for anisotropic shapes the literature is limited. Arc-discharge synthesized multiwalled carbon nanotube (MWNT) material contains besides the very anisotropic tubes also irregular amorphous carbon particles (ACP) that both are strongly hydrophobic. As a water-air-solid contact line is swept over a deposition of MWNT material on a hydrophilic substrate, it causes selective detachment of the spherical ACPs over the one dimensional MWNTs. In this work we investigate the detachment process and the balance between the surface tension force and adhesive forces. Our results show that on hydrophilic substrates the surface tension force of the liquid interface dominates over adhesion, sweeping away most of the material. However, clean MWNTs oriented perpendicular to the contact line are able to resist detachment. On the other hand, on hydrophobic surfaces adhesive forces dominate, possibly via the hydrophobic interaction. We discuss these results with conventional models of capillarity and adhesion, including the van der Waals force and the electrostatic double layer interaction. However, a fully satisfactory analysis will require e.g. computational modelling of the problem.

show abstract

Colloid mobilization by fluid displacement fronts in channels

Cited by 63 publications

References 56 publications

On-chip purification via liquid immersion of arc-discharge synthesized multiwalled carbon nanotubes

On-chip purification via liquid immersion of arc-discharge synthesized multiwalled carbon nanotubes

Self-cleaning of Surfaces: the Role of Surface Wettability and Dust Types

Experimental studies on the detachment of multi-walled carbon nanotubes by a mobile liquid interface

Contact Info

Product

Resources

About