A Tangled Web: Young, Laplace, and the Surface Tension Law

Physiology ◽  
1993 ◽  
Vol 8 (4) ◽  
pp. 179-183
Author(s):  
S. Marsh Tenney
Keyword(s):  
Surface Tension ◽  
History Of

The nagging issue of priority complicated the important discovery by two great scientists. Their lives and the subsequent history of their work reveal amusing and sometimes unusual relationships.

Last Patents on Bubble Electrospinning

2020 ◽  
Vol 14 (1) ◽  
pp. 5-9 ◽  
Author(s):  
Guo-Liang Liu ◽  
Yu-Meng Zhang ◽  
Dan Tian ◽  
Bang-Ze Zhou ◽  
Zhen-Qian Lu ◽  
...  
Keyword(s):  
Surface Tension ◽  
Electrostatic Force ◽  
Mechanical Force ◽  
Single Bubble ◽  
Information Industry ◽  
Pharmaceutical Application ◽  
History Of ◽  
Environmental Industry

Due to their unique properties, nanofibers have been widely used in various areas, for example, information industry, pharmaceutical application, environmental industry, textile and clothing, etc. Bubble electrospinning is one of the most important non-needle electrospinning methods for nanofiber fabrication. It usually uses polymer bubbles for the production of nanomaterials by using electrostatic force, flowing air or mechanical force to overcome the surface tension of bubbles. Bubble electrospinning mainly includes bubble electrospinning and blown bubble electrospinning. History of the development of bubble electrospinning is briefly introduced in this article, and the most promising patents on the technology are elucidated. The methods of bubble electrospinning are single bubble electrospinning, porous bubble electrospinning, blown bubble electrospinning, electrostatic-fieldassisted blown bubble spinning and others. These different bubble electrospinning methods are also discussed in this paper.

The toroidal bubble

1968 ◽  
Vol 32 (1) ◽  
pp. 97-112 ◽  
Author(s):  
T. J. Pedley
Keyword(s):  
Surface Tension ◽  
Viscous Fluid ◽  
Energy Equation ◽  
Bubble Surface ◽  
Inviscid Fluid ◽  
Initial Instant ◽  
Bubble Volume ◽  
Toroidal Bubble ◽  
History Of ◽  
Impulse Equation

It has been observed by Walters & Davidson (1963) that release of a mass of gas in water sometimes produces a rising toroidal bubble. This paper is concerned with the history of such a bubble, given that at the initial instant the motion is irrotational everywhere in the water. The variation of its overall radius a with time may be predicted from the vertical impulse equation, and it should be possible to make the same prediction by equating the rate of loss of combined kinetic and potential energy to the rate of viscous dissipation. This is indeed seen to be the case, but not before it is recognized that in a viscous fluid vorticity will continually diffuse out from the bubble surface, destroying the irrotationality of the motion, and necessitating an examination of the distribution of vorticity. The impulse equation takes the same form as in an inviscid fluid, but the energy equation is severely modified. Other results include an evaluation of the effect of a hydrostatic variation in bubble volume, and a prediction of the time which will have elapsed before the bubble becomes unstable under the action of surface tension.

Sign in / Sign up

Export Citation Format

Share Document