2004
DOI: 10.1103/physreve.69.031802
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Tuning of microcapsule adhesion by varying the capsule-wall thickness

Abstract: The adhesion area and topology of spherical hollow polyelectrolyte shells adhering to flat glass or polyelectrolyte-covered glass surfaces are studied. Strong adhesion is found for anionic poly(sodium 4-styrenesulfonate)-terminated shells on cationic poly(ethylene imine)-covered glass, while no adhesion of those shells on uncoated glass is found. The adhering shells are deformed and obtain a truncated sphere topology with a circular adhesion disk. The radius of the adhesion disks can reach up to 50% of the she… Show more

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Cited by 61 publications
(79 citation statements)
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“…For future work it appears most promising to study the relation between modulus, adhesion and local curvature of shells as well as shape transitions. For the systems we have presented one expects that mechanics and adhesion can independently be varied which appears most promising also for applications [53]. Also for polyelectrolyte multilayer capsules, we show that the laws of continuum mechanics hold down to dimensions of the order of 10 nm.…”
Section: Discussionmentioning
confidence: 89%
“…For future work it appears most promising to study the relation between modulus, adhesion and local curvature of shells as well as shape transitions. For the systems we have presented one expects that mechanics and adhesion can independently be varied which appears most promising also for applications [53]. Also for polyelectrolyte multilayer capsules, we show that the laws of continuum mechanics hold down to dimensions of the order of 10 nm.…”
Section: Discussionmentioning
confidence: 89%
“…For fi lm thickness measurements the capsule single wall thickness was determined as half of the height of the collapsed fl at regions on dried capsules using bearing analysis to generate height histograms. [ 72 ] CLSM : Confocal images of capsules were obtained with a LSM 510 NLO META inverted confocal laser scanning microscope equipped with a 63 × 1.4 oil immersion objective lens (Zeiss, Germany). The excitation/ emission wavelengths were 488/515 nm.…”
Section: Methodsmentioning
confidence: 99%
“…Various kinds of microcapsules are synthesized with different sizes and membrane thicknesses h [42,43,[52][53][54]. The deformability of microcapsules can be varied widely by controlling the membrane elastic properties and capsule shapes.…”
Section: Introductionmentioning
confidence: 99%