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Mechanical Phenomena

About: Mechanical Phenomena is a research topic. Over the lifetime, 197 publications have been published within this topic receiving 5442 citations.


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Journal ArticleDOI
TL;DR: In this article, the state of the art in the thermal, mechanical, microstructural, and technological fields of hot stamping is reviewed, and the investigations of all process sequences, from heating of the blank to hot stamps and subsequent further further processes are described.

1,397 citations

Journal ArticleDOI
TL;DR: The general issues that will be critical to the success of any type of next-generation mechanical biosensor are explained, such as the need to improve intrinsic device performance, fabrication reproducibility and system integration, and the need for a greater understanding of analyte-sensor interactions on the nanoscale.
Abstract: Mechanical interactions are fundamental to biology. Mechanical forces of chemical origin determine motility and adhesion on the cellular scale, and govern transport and affinity on the molecular scale. Biological sensing in the mechanical domain provides unique opportunities to measure forces, displacements and mass changes from cellular and subcellular processes. Nanomechanical systems are particularly well matched in size with molecular interactions, and provide a basis for biological probes with single-molecule sensitivity. Here we review micro- and nanoscale biosensors, with a particular focus on fast mechanical biosensing in fluid by mass- and force-based methods, and the challenges presented by non-specific interactions. We explain the general issues that will be critical to the success of any type of next-generation mechanical biosensor, such as the need to improve intrinsic device performance, fabrication reproducibility and system integration. We also discuss the need for a greater understanding of analyte–sensor interactions on the nanoscale and of stochastic processes in the sensing environment.

893 citations

Journal ArticleDOI
TL;DR: This work shows that incorporation of sacrificial bonds into a self-repairable network dramatically improves the overall mechanical properties of this covalently cross-linked polymer network, which can self-heal via olefin cross-metathesis.
Abstract: Polymers that repair themselves after mechanical damage can significantly improve their durability and safety. A major goal in the field of self-healing materials is to combine robust mechanical and efficient healing properties. Here, we show that incorporation of sacrificial bonds into a self-repairable network dramatically improves the overall mechanical properties. Specifically, we use simple secondary amide side chains to create dynamic energy dissipative hydrogen bonds in a covalently cross-linked polymer network, which can self-heal via olefin cross-metathesis. We envision that this straightforward sacrificial bonding strategy can be employed to improve mechanical properties in a variety of self-healing systems.

350 citations

Journal ArticleDOI
TL;DR: This review provides insight into the mechanical phenomena that occur in suspended mechanical structures when either biological adsorption or interactions take place on their surface: mass, surface stress, effective Young's modulus and viscoelasticity.
Abstract: The advances in micro- and nanofabrication technologies enable the preparation of increasingly smaller mechanical transducers capable of detecting the forces, motion, mechanical properties and masses that emerge in biomolecular interactions and fundamental biological processes. Thus, biosensors based on nanomechanical systems have gained considerable relevance in the last decade. This review provides insight into the mechanical phenomena that occur in suspended mechanical structures when either biological adsorption or interactions take place on their surface. This review guides the reader through the parameters that change as a consequence of biomolecular adsorption: mass, surface stress, effective Young's modulus and viscoelasticity. The mathematical background needed to correctly interpret the output signals from nanomechanical biosensors is also outlined here. Other practical issues reviewed are the immobilization of biomolecular receptors on the surface of nanomechanical systems and methods to attain that in large arrays of sensors. We then describe some relevant realizations of biosensor devices based on nanomechanical systems that harness some of the mechanical effects cited above. We finally discuss the intrinsic detection limits of the devices and the limitation that arises from non-specific adsorption.

334 citations

Journal ArticleDOI
01 Dec 1984-Wear
TL;DR: In this paper, a review of the thermal and mechanical properties of sliding systems is presented, including mechanisms of frictional heating and the distribution of heat during sliding friction, the experimental measurement and analysis of surface and near-surface temperatures resulting from frictional heat, thermal deformation around sliding contacts and the changes in contact geometry caused by thermal deformations, and the thermomechanical stress distribution around the frictionally heated and thermally deformed contact spots.

255 citations

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20213
202012
201910
201813
201718
20167