منابع مشابه
Wide-angle noncontact and small-angle contact cameras.
The theoretical wide-angle model of the human eye and the principle of separation of ophthalmoscopic illumination and observation apertures have been used to design two fundamentally different ophthalmoscopic cameras: a 90 degree wide-angle, noncontact camera and a high-resolution macula-disc camera. The chief advantage of the 90 degree noncontact camera is the increase in contrast achieved by ...
متن کاملEffective contact angle for rough boundary
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t We provide rigorous justification for the classical Wenzel equation for the roughness enhanced effective con...
متن کاملReliable measurement of the receding contact angle.
Surface wettability is usually evaluated by the contact angle between the perimeter of a water drop and the surface. However, this single measurement is not enough for proper characterization, and the so-called advancing and receding contact angles also need to be measured. Measuring the receding contact angle can be challenging, especially for extremely hydrophobic surfaces. We demonstrate a r...
متن کاملLubrication Approximation with Prescribed Nonzero Contact Angle
We prove long{time existence for a weak solution s(t; x) 0 of the lubrication approximation @ t s + @ x (s @ 3 x s) = 0 in fs > 0g with prescribed contact angle of, say, 4 (@ x s) 2 = 1 on @fs > 0g :
متن کاملAnalysis of Contact Angle in Capillary Invasion
The correct knowledge of the physical processes that control the fluid-fluid interface displacement at the pore-level is of increasing interest due to the growing possibility of direct simulation of immiscible displacement offered by the strong development of computers’ performance and numeric methods and to the increasing accuracy in three-dimensional reconstruction methods. Flow of immiscible...
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ژورنال
عنوان ژورنال: Langmuir
سال: 2018
ISSN: 0743-7463,1520-5827
DOI: 10.1021/acs.langmuir.8b01276