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A Green Approach to Tribology
Published in Girma Biresaw, K.L. Mittal, Surfactants in Tribology, 2019
Nadia G. Kandile, David R.K. Harding
Nanotribology is the science that studies friction, wear, adhesion, and lubrication phenomena in the 1–100 nm range. Nanotribology deals with nanostructured surfaces, nanoagents (ingredients, additives), and nanoprocesses (Table 10.8).
On the hybrid atomistic-continuum model for vibrational analysis of α-, β-, and γ-graphyne circular nano-plates
Published in Waves in Random and Complex Media, 2022
Babak Azizi, Mohammad Hosseini, Mojtaba Shariati
Nanotechnology has attracted the attention of many scientists and engineers, but what is the reason for scientists’ interest in nanoscience? Often, the behavior of a material on small scale is very different from the behavior of the same material on macro scale, for this reason, many efforts have been made and are being made to understand the properties of materials in small dimensions. Nanomechanics is a branch of nanoscience that studies the physical-mechanical properties of physical systems such as tensile (elasticity), thermal and kinetic properties at small scales. As a field of nanoscience, nanomechanics provides the scientific basis for nanotechnology. Some of the well-established nanomechanical fields are nanotribology, micro- and nano-electromechanical systems (MEMS/NEMS), nanobiotechnology, and nanofluids.
Dynamics of the overdamped three-layer model with the incommensurate structure
Published in Waves in Random and Complex Media, 2019
Y. Yang, Jasmina Tekić, X. R. Hong, L. P. Jia, P. Wei, W. S. Duan
Colloidal particles have attracted growing interests in many branches of physics such as melting, defect dynamics, the fractionation, segregation and ordering on 2D and 1D periodic substrates [1–6]. Especially, the ability of laser interference potentials to trap and control colloidal particles opens up a new potential area. A beautiful example is the study of friction between colloidal crystals [7]. Colloidal friction provides an unprecedented real-time insight into the basic dynamical mechanisms, and it has been studied by several authors [8–11]. These investigations use the simple model in which there is a moving harmonic chain above the substrate. More complicated systems such as the chain of harmonically interacting atoms confined between two moving rigid sinusoidal substrates have been studied by Braun et al. [12]. Those problems of multi-layer dynamics are particularly interesting for the nanotribology, such as lubrication, friction, the wear [13–16]. The three-layer system has been used to study the friction phenomena and the properties of the lubricant films. The lubricant film is usually described as a chain of harmonically interacting atoms confined between two moving rigid sinusoidal substrates [12]. Most models of the previous works on the three-layer system assume that the upper layer is a rigid plate. In our previous works, we have proposed a three-layer model in which the upper layer is not a rigid plate but a harmonic chain of atoms which can also move over the moving middle layer of harmonic chain and the rigid substrate [17–19].
Logical and information aspects in surface science: friction, capillarity, and superhydrophobicity
Published in International Journal of Parallel, Emergent and Distributed Systems, 2018
Dry sliding friction is a fundamental physical phenomenon which occurs almost universally for all classes of materials (metals, polymers, ceramics, composites, etc.) and material combinations. Friction is found for a large range of loadings, from nanonewtons (in nanotribology) to billions of tons (in seismology) and for a wide range of other conditions. On the other hand, the friction force is not considered a fundamental physical force, and it is usually introduced in an ad hoc manner, rather than deduced from the first principles of physics. There are many seemingly unrelated mechanisms leading to friction. These mechanisms include adhesion, elastic and plastic deformation, brittle fracture, rupture crack propagation, etc.