Theory of the mm Wave IMPATT Diode: A Review

Pal, Biswajit; Khan, Rahmat Ullah; Chakrabarti, P.

doi:10.1080/03772063.1994.11437162

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2002

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“…In this scenario, the receding meniscus moves much faster at some points than others, leading to the development of “fingers” of fluid that can then neck off as isolated droplets. It is possible that such inhomogeneities also lead to an avalanche-type response, which is known to lead to instabilities in formally similar systems …”

Section: Discussionmentioning

confidence: 99%

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Wetting Kinetics of Fluorinated Surfaces

2002

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A comparison has been made of the wetting properties of surfaces formed from bulk perfluorinated thermoplastics, from perfluorinated thermoplastic coatings, and from sol−gel coatings containing perfluoroalkyl chains. All surfaces showed hysteretic behavior, i.e., different advancing and receding contact angles, that was well-described by the Blake−Haynes meniscus-fluctuation theory of wetting kinetics over 2 orders of magnitude of advancing and receding meniscus velocities. The behavior at high wetting speed, and particularly the maximum three-phase contact line velocity, was better described by the Voinov−Cox−de Gennes theory involving viscosity. Best agreement with experiment over the whole range of meniscus velocities was found with the theory of Petrov, which takes both types of effects into account.

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Section: Discussionmentioning

confidence: 99%

“…It is possible that such inhomogeneities also lead to an avalanche-type response, which is known to lead to instabilities in formally similar systems. 43…”

Section: Discussionmentioning

confidence: 99%