Microcapsule mechanics : From stability to function

Titelangaben

Neubauer, Martin Peter ; Pöhlmann, Melanie ; Fery, Andreas:
Microcapsule mechanics : From stability to function.
In: Advances in Colloid and Interface Science. Bd. 207 (2014) . - S. 65-80.
ISSN 0001-8686
DOI: https://doi.org/10.1016/j.cis.2013.11.016

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Abstract

Microcapsules are reviewed with special emphasis on the relevance of controlled mechanical properties for func- tional aspects. At first, assembly strategies are presented that allow control over the decisive geometrical param- eters, diameter and wall thickness, which both influence the capsule's mechanical performance. As one of the most powerful approaches the layer-by-layer technique is identified. Subsequently, ensemble and, in particular, single-capsule deformation techniques are discussed. The latter generally provide more in-depth information and cover the complete range of applicable forces from smaller than pN to N. In a theory chapter, we illustrate the physics of capsule deformation. The main focus is on thin shell theory, which provides a useful approximation for many deformation scenarios. Finally, we give an overview of applications and future perspectives where the specific design of mechanical properties turns microcapsules into (multi-)functional devices, enriching especially life sciences and material sciences.