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- Title
Composite Films for Time Measurement—A Case Study.
- Authors
Carotenuto, Gianfranco
- Abstract
In fact, since pitches have an apparently solid nature, it is possible to develop a mathematical model for particle sedimentation, which is based on the kinetic friction force acting at filler-matrix interface. As visible, the sedimentation acceleration approaches the acceleration due to gravity with increasing of the metal density and the particle size, and therefore, a raw powder of a noble metal is the most convenient choice for an electrically conductive filler. Since metal particle sedimentation in pitches is a very slow process, the presence in the composite of a percolation structure could represent a trick to have perceptible variations of the electrical conductivity in short time intervals. The working mechanism of these devices is very simple: the sedimentation of the dispersed metallic phase (composite filler) by the effect of gravitational force slowly reduces the extension of the region of pitch where particles are embedded.
- Subjects
TIME measurements; MATERIALS science; AMORPHOUS substances
- Publication
Coatings (2079-6412), 2022, Vol 12, Issue 8, p1118
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings12081118