The behaviour of liquid drops and adsorbed films at cleavage surfaces of mica

Bangham, D. H.; Saweris, Z.

doi:10.1039/tf9383400554

Cited by 100 publications

(48 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Historically, studies of epitaxial crystal growth on mica go back at least to the first half of the nineteenth century [1; 2], and contact angle measurements of liquids on mica were also reported at a very early stage [3]. Gas and vapour adsorption work was carried out in the early twentieth century by Langmuir [4], and later Bangham and coworkers [5; 6], who also did wetting experiments [7]. Other early worked focussed on the insulating properties of mica [8], and its use in capacitors and in quarter-wave plates.…”

Section: Introductionmentioning

confidence: 99%

The nature of the air-cleaved mica surface

Christenson

Thomson

2016

Surface Science Reports

115

102

View full text Add to dashboard Cite

The accepted image of muscovite mica is that of an inert and atomically smooth surface, easily prepared by cleavage in an ambient atmosphere. Consequently, mica is extensively used a model substrate in many fundamental studies of surface phenomena and as a substrate for AFM imaging of biomolecules. In this review we present evidence from the literature that the above picture is not quite correct. The mica used in experimental work is almost invariably cleaved in laboratory air, where a reaction between the mica surface, atmospheric CO2 and water occurs immediately after cleavage. The evidence suggests very strongly that as a result the mica surface becomes covered by up to one formula unit of K2CO3 per nm 2 , which is mobile under humid conditions, and crystallizes under drier conditions. The properties of mica in air or water vapour cannot be fully understood without reference to the surface K2CO3, and many studies of the structure of adsorbed water on mica surfaces may need to be revisited. With this new insight, however, the air-cleaved mica should provide exciting opportunities to study phenomena such as two-dimensional ion diffusion, electrolyte effects on surface conductivity, and two-dimensional crystal nucleation.

show abstract

Section: Introductionmentioning

confidence: 99%

The nature of the air-cleaved mica surface

Christenson

Thomson

2016

Surface Science Reports

115

102

View full text Add to dashboard Cite

show abstract

“…Equally complex motion of droplets (attraction, repulsion, chasing etc) has been reported for volatile droplets slowly evaporating at room temperature [2][3][4][5][6][7], but, apart from the conjecture that the phenomena is caused by the Marangoni effect (flow induced by the gradient of surface tension), no quantitative theory has been given. Cira et al [7] reported that evaporating droplets show complex motion even if they are placed on an inert substrate where the wettability is uniform and unchanged.…”

mentioning

confidence: 99%

Vapor-Induced Motion of Liquid Droplets on an Inert Substrate

Man

Doi

2017

Phys. Rev. Lett.

View full text Add to dashboard Cite

Evaporating droplets are known to show complex motion that has conventionally been explained by the Marangoni effect (flow induced by the gradient of surface tension). Here, we show that the droplet motion can be induced even in the absence of the Marangoni effect due to the gradient of evaporation rate. We derive an equation for the velocity of a droplet subject to non-uniform evaporation rate and non-uniform surface tension placed on an inert substrate where the wettability is uniform and unchanged. The equation explains the previously observed attraction-repulsionchasing behaviors of evaporating droplets. *

show abstract

“…In both cases, surface tension gradients result from thermal and/or concentration gradients. The surface flow may significantly interplay with the heat transfer or coating process, possibly leading to film rupture and dendritic instabilities [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Evaporating drops of alkane mixtures

Guéna

Poulard

Cazabat

2007

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Abstract:Alkane mixtures are model systems where the influence of surface tension gradients during the spreading and the evaporation of wetting drops can be easily studied. The surface tension gradients are mainly induced by concentration gradients, mass diffusion being a stabilising process. Depending on the relative concentration of the mixture, a rich pattern of behaviours is obtained. keywords Moving contact line, evaporating drops.

show abstract

The behaviour of liquid drops and adsorbed films at cleavage surfaces of mica

Cited by 100 publications

References 0 publications

The nature of the air-cleaved mica surface

The nature of the air-cleaved mica surface

Vapor-Induced Motion of Liquid Droplets on an Inert Substrate

Evaporating drops of alkane mixtures

Contact Info

Product

Resources

About