Polymer-Mediated Adhesion: Nanoscale Surface Morphology and Failure Mechanisms
نویسندگان
چکیده
منابع مشابه
Supramolecular surface adhesion mediated by azobenzene polymer brushes.
Surface immobilised polymer brushes containing azobenzene units were prepared using a combination of microcontact chemistry and surface-initiated atom transfer radical polymerisation (SI-ATRP). These brushes were investigated using AFM, XPS and UV/vis spectroscopy. It was shown that two surfaces bearing azobenzene brushes can be glued together in the presence of a β-cyclodextrin polymer and hol...
متن کاملMechanisms of failure in nanoscale metallic glass.
The emergence of size-dependent mechanical strength in nanosized materials is now well-established, but no fundamental understanding of fracture toughness or flaw sensitivity in nanostructures exists. We report the fabrication and in situ fracture testing of ∼70 nm diameter Ni-P metallic glass samples with a structural flaw. Failure occurs at the structural flaw in all cases, and the failure st...
متن کاملAdhesion mechanisms at soft polymer interfaces.
Based on several significant examples, we analyse the adhesion mechanisms at soft polymer interfaces with a special emphasis first on the role of connector molecules, that is, polymer chains bound to the interface and which transmit stress through a stretching and extraction mechanism, and second on the necessary relay that must be taken by additional dissipation mechanisms acting at larger sca...
متن کاملHigh efficiency polymer solar cells with vertically modulated nanoscale morphology.
Nanoscale morphology has been shown to be a critical parameter governing charge transport properties of polymer bulk heterojunction (BHJ) solar cells. Recent results on vertical phase separation have intensified the research on 3D morphology control. In this paper, we intend to modify the distribution of donors and acceptors in a classical BHJ polymer solar cell by making the active layer riche...
متن کاملAdhesion-Related Failure Mechanisms in Micromechanical Devices
Adhesion-related failures occurs in microelectromechanical systems (MEMS) when suspended elastic members unexpectedly stick to their substrates. This type of device failure is one of the dominant sources of yield loss in MEMS. This paper reviews the physical mechanisms responsible for the failure from both the theoretical and practical stand point. In general, the failure requires two different...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Macromolecules
سال: 2020
ISSN: 0024-9297,1520-5835
DOI: 10.1021/acs.macromol.0c02343