Calculations of van der Waals adhesion

Harrach, HS von

doi:10.1016/0040-6090(74)90301-0

Cited by 23 publications

(3 citation statements)

References 10 publications

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“…According to whether the adhesion comes from the interface, and whether it is related to the fluid medium, we divide the common ordered structure‐related bioadhesion strategies into three main categories: direct interface interaction‐related, interface fluid mechanics‐related and negative pressure‐related. Among them, the direct interfacial interaction mainly refers to the mechanical interlocking (Figure 1A,B) and van der Waals forces (Figure 1C–F) enhanced by the ordered structure 79–82 . The second type, the adhesion force originated from interface fluid mechanics is mainly reflected in the considerable capillary force or Stefan adhesion brought by the ordered structure (Figure 1G–I).…”

Section: Structure‐related Adhesionmentioning

confidence: 99%

Bio‐inspired adhesive hydrogel for biomedicine—principles and design strategies

Yang

Lai

et al. 2022

Smart Medicine

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The adhesiveness of hydrogels is urgently required in various biomedical applications such as medical patches, tissue sealants, and flexible electronic devices. However, biological tissues are often wet, soft, movable, and easily damaged. These features pose difficulties for the construction of adhesive hydrogels for medical use. In nature, organisms adhere to unique strategies, such as reversible sucker adhesion in octopuses and nontoxic and firm catechol chemistry in mussels, which provide many inspirations for medical hydrogels to overcome the above challenges. In this review, we systematically classify bioadhesion strategies into structure‐related and molecular‐related ones, which cover almost all known bioadhesion paradigms. We outline the principles of these strategies and summarize the corresponding designs of medical adhesive hydrogels inspired by them. Finally, conclusions and perspectives concerning the development of this field are provided. For the booming bio‐inspired adhesive hydrogels, this review aims to summarize and analyze the various existing theories and provide systematic guidance for future research from an innovative perspective.

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Section: Structure‐related Adhesionmentioning

confidence: 99%

Bio‐inspired adhesive hydrogel for biomedicine—principles and design strategies

Yang

Lai

et al. 2022

Smart Medicine

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“…Electrostatic bonding may be regarded as a special case of physisorption and also leads to relatively poor adhesion [17]. When two materials of very different electron affinities are brought together an electrical double layer forms which contributes to the adhesion (as has been suggested is the case for evaporated metal coatings on polymers [18]).…”

Section: Interfacial Bonding Structure and Adhesionmentioning

confidence: 99%

Interfaces and Adhesion

Bull

1992

Eurocourses: Mechanical and Materials Science

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ABSTRACT. In most applications the mmImum criterion for adequate coating performance is that it remains attached to the substrate over the lifetime of the component. Control of the factors affecting adhesion is thus essential and this equates to careful control of the structure and composition of the interfacial layers if the best performance of the coating is to be achieved. Practical adhesion is a macroscopic property which depends on chemical and mechanical bonding at the interface, residual stress and the presence of any stresses imposed by the application and the mechanism of interfacial failure which depends on the coating and substrate materials and the working environment. In this paper the mechanisms of adhesion and how these relate to interfacial structure are discussed in detail. In addition techniques for assessing and improving adhesion are also reviewed.

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“…In spite of these advantages of electroless plating, the weak adhesion originates from van der Waals forces between the atoms of the metal layer and the ceramic substrate has prohibited the application of this technique [9,10]. The nature and the structure of interfacial region ultimately determine such performance.…”

Section: Introductionmentioning

confidence: 98%