Temperature Dependence of Sessile Bubble Contact Angle at a Water–Silicon Interface

Natalya Evgenyevna Esipova, Anatoly Ivanovich Rusanov, Vladimir Dmitrievich Sobolev

Результат исследований: Научные публикации в периодических изданияхстатья

Аннотация

The goal of this work is the experimental verification of a recently formulated thermodynamic theory of the temperature dependence of sessile bubble contact angle [Rusanov, A.I., Colloid J., 2020, vol. 82, p. 303]. In particular, the possibilities of an increase in small contact angles and a decrease in large ones (larger than 90°) are tested. The experiments are carried out with a bubble at a water–silicon interface using two types of polished silicon plates: clean plates with a water contact angle of 12° and plates with a hydrophobized surface and the water contact angle of 104° within a temperature range 20–80°C. In both cases, the experiments have confirmed the theory. In addition, a temperature pinning effect (anchoring of the three-phase contact line) has been revealed for the sessile bubble.
Язык оригиналаанглийский
Страницы (с-по)522-528
Число страниц7
ЖурналColloid Journal
Том82
Номер выпуска5
DOI
СостояниеОпубликовано - 1 сен 2020

Предметные области Scopus

  • Поверхности и интерфейсы
  • Физическая и теоретическая химия
  • Коллоидная химия и химия поверхности

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