Friction and wear properties in MEMS

Wang, Weiyuan; Wang, Yuelin; Bao, Haifei; Xiong, Bin; Bao, Ming

doi:10.1016/s0924-4247(01)00821-4

Cited by 82 publications

(44 citation statements)

References 20 publications

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“…It reveals the microstructure possesses low friction coefficient. This similar result was also investigated by other research [37]. The friction coefficient as detected by SPM is lower than the macro-friction.…”

Section: Friction Testsupporting

confidence: 88%

Nanomechanical properties of nanocrystalline Ni–Fe mold insert

Yeh

Fang

2004

Journal of Alloys and Compounds

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Section: Friction Testsupporting

confidence: 88%

Nanomechanical properties of nanocrystalline Ni–Fe mold insert

Yeh

Fang

2004

Journal of Alloys and Compounds

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“…This method can easily be utilized to explore a variety of additional properties that depend on roughness, including the type of roughness (patterned vs. random), range of lateral and vertical roughness (from a few nm to microns), and change in elastic modulus by using different UV curable polymers. Thus, this method can be applied in a straightforward way to mimic and understand the tribological behavior of a number of real world applications and devices [57,58].…”

Section: Discussionmentioning

confidence: 99%

Role of nanometer roughness on the adhesion and friction of a rough polymer surface and a molecularly smooth mica surface

2007

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Friction and adhesion measurements between surfaces of cross-linked, stiff polymers of varying roughness against smooth, bare mica surfaces were carried out in dry air as well as in the presence of lubricating oil. The nominal (macroscopic) contact area varies with the applied load according to the Johnson, Kendall and Roberts (JKR) theory, yet shows significant hysteresis due to the irreversibility arising from the loading/unloading curves of multiple asperities. Upon introducing the oil between the surfaces, the critical shear stress is reduced to zero due to the elimination of the adhesion force. However, the effect is less noticeable on the friction coefficient. Lastly, the effect of increasing the (RMS) roughness was greatest over the first few nanometers due to the diminution of the adhesion-controlled contribution to the friction, after which a further increase in roughness had less dramatic effects. A model is presented to account for the observed adhesion hysteresis during repeated loading/unloading cycles of purely elastically deforming rough surfaces.

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“…Characterization and control of such phenomena are of key importance in every kind of machinery [3,4], as well as biological systems at different scales [5]. The dynamics of any two objects rubbed against each other is ultimately governed by atomic-scale interactions between the microscopic asperities that build up the effective contact area [6].…”

mentioning

confidence: 99%

Energy Loss Triggered by Atomic-Scale Lateral Force

et al. 2013

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We perform bimodal atomic force microscopy measurements on a Br-doped NaCl (001) surface to investigate the mechanisms behind frequency shift and energy dissipation contrasts. The peculiar pattern of the dissipated energy in the torsional channel, related to frictional processes, is increased at the positions of Br impurities, otherwise indistinguishable from Cl ions in the other measured channels. Our simulations reveal how the energy dissipates by the rearrangement of the tip apex and how the process is ultimately governed by lateral forces. Even the slightest change in lateral forces, induced by the presence of a Br impurity, is enough to trigger the apex reconstruction more often, thus increasing the dissipation contrast; the predicted dissipation pattern and magnitude are in good quantitative agreement with the measurements.

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Friction and wear properties in MEMS

Cited by 82 publications

References 20 publications

Nanomechanical properties of nanocrystalline Ni–Fe mold insert

Nanomechanical properties of nanocrystalline Ni–Fe mold insert

Role of nanometer roughness on the adhesion and friction of a rough polymer surface and a molecularly smooth mica surface

Energy Loss Triggered by Atomic-Scale Lateral Force

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