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Page 1
Studies on tribology.
Hori Y, Kato K. Hori Y, et al. Proc Jpn Acad Ser B Phys Biol Sci. 2008;84(8):287-320. doi: 10.2183/pjab.84.287. Proc Jpn Acad Ser B Phys Biol Sci. 2008. PMID: 18941304 Free PMC article. Review.
Further theoretical and experimental analyses are made for considering heat generation and temperature rise in hydrodynamic lubrication. The usefulness of the lubrication theory based on the k-epsilon model is also shown for bearings with high eccentricity ra …
Further theoretical and experimental analyses are made for considering heat generation and temperature rise in hydrodynamic lubric …
Elastohydrodynamic Relaxation of Soft and Deformable Microchannels.
Guyard G, Restagno F, McGraw JD. Guyard G, et al. Phys Rev Lett. 2022 Nov 11;129(20):204501. doi: 10.1103/PhysRevLett.129.204501. Phys Rev Lett. 2022. PMID: 36462008
Hydrodynamic flows in compliant channels are of great interest in physiology and microfluidics. ...In this study we provide time-resolved measurements of the relaxation dynamics for thin and soft, rectangular microfluidic channels. We describe our data using a perturbative …
Hydrodynamic flows in compliant channels are of great interest in physiology and microfluidics. ...In this study we provide time-reso …
Elastohydrodynamic Lift at a Soft Wall.
Davies HS, Débarre D, El Amri N, Verdier C, Richter RP, Bureau L. Davies HS, et al. Phys Rev Lett. 2018 May 11;120(19):198001. doi: 10.1103/PhysRevLett.120.198001. Phys Rev Lett. 2018. PMID: 29799224 Free article.
This study thus provides the first experimental evidence of "soft lubrication" at play at small scale, in a system relevant, for example, to the physics of blood microcirculation....
This study thus provides the first experimental evidence of "soft lubrication" at play at small scale, in a system relevant, for exam …
The hydrodynamics of bubble rise and impact with solid surfaces.
Manica R, Klaseboer E, Chan DYC. Manica R, et al. Adv Colloid Interface Sci. 2016 Sep;235:214-232. doi: 10.1016/j.cis.2016.06.010. Epub 2016 Jun 25. Adv Colloid Interface Sci. 2016. PMID: 27378067 Review.
We study this physical phenomenon in terms of forces, which can be of colloidal, inertial, elastic, surface tension and viscous origins. Recent advances in high-speed photography allow for the observation of phenomena on the millisecond scale. ...These experiments confirm …
We study this physical phenomenon in terms of forces, which can be of colloidal, inertial, elastic, surface tension and viscous origi …
Hydrodynamic Elastocapillary Morphing of Hair Bundles.
Ha J, Kim YS, Jiang K, Siu R, Tawfick S. Ha J, et al. Phys Rev Lett. 2020 Dec 18;125(25):254503. doi: 10.1103/PhysRevLett.125.254503. Phys Rev Lett. 2020. PMID: 33416352
We report polymorphic self-assembly of hair arranged in hollow bundles driven by capillarity, hydrodynamics, and elasticity. Bundles emerging from a liquid bath shrink but remain hollow at slow drainage due to the negative pressure of the menisci trapped between the …
We report polymorphic self-assembly of hair arranged in hollow bundles driven by capillarity, hydrodynamics, and elasticity. B …
Normal modes of weak colloidal gels.
Varga Z, Swan JW. Varga Z, et al. Phys Rev E. 2018 Jan;97(1-1):012608. doi: 10.1103/PhysRevE.97.012608. Phys Rev E. 2018. PMID: 29448322 Free article.
We find that the density of states and spatial structure of the normal modes are fundamentally altered by long-ranged hydrodynamic coupling among the particles. Short-ranged coupling due to hydrodynamic lubrication affects only the relaxation rates of short-w …
We find that the density of states and spatial structure of the normal modes are fundamentally altered by long-ranged hydrodynamic co …
Rheology and tribology of chitosan/Acacia gum complex coacervates.
El Abbadi A, Erni P. El Abbadi A, et al. Soft Matter. 2022 Oct 19;18(40):7804-7813. doi: 10.1039/d2sm00881e. Soft Matter. 2022. PMID: 36193837
Acacia gum (Gum Arabic; GA) and chitosan (CTS) form complex coacervates in acidic environments, providing a polymer-rich aqueous material with interesting bio-lubricant properties. We investigate the interplay of the tribology and rheology of these coacervates, demonstrati …
Acacia gum (Gum Arabic; GA) and chitosan (CTS) form complex coacervates in acidic environments, providing a polymer-rich aqueous material wi …
Cartilage-like tribological performance of charged double network hydrogels.
Bonyadi SZ, Demott CJ, Grunlan MA, Dunn AC. Bonyadi SZ, et al. J Mech Behav Biomed Mater. 2021 Feb;114:104202. doi: 10.1016/j.jmbbm.2020.104202. Epub 2020 Nov 15. J Mech Behav Biomed Mater. 2021. PMID: 33243694
In FBS, the lubrication responses were pushed towards elasto-hydrodynamics with nearly all friction coefficient values falling below 0.3. ...These DN hydrogels prove to fulfill, and in some cases surpass, the lubrication demands for cartilage replacement in l …
In FBS, the lubrication responses were pushed towards elasto-hydrodynamics with nearly all friction coefficient values falling …
Reduced Pressure Drop in Viscoelastic Polydimethylsiloxane Wall Channels.
Kim AR, Mitra SK, Zhao B. Kim AR, et al. Langmuir. 2021 Dec 14;37(49):14292-14301. doi: 10.1021/acs.langmuir.1c02087. Epub 2021 Nov 30. Langmuir. 2021. PMID: 34846896
Channels made of PDMS, used for transporting analytes, are integral to these applications. The PDMS viscoelastic nature can induce additional hydrodynamic contributions at the soft wall/fluid interface compared to rigid walls. ...The research findings appear to be unexpect …
Channels made of PDMS, used for transporting analytes, are integral to these applications. The PDMS viscoelastic nature can induce additiona …
Lubricated steady sliding of a rigid sphere on a soft elastic substrate: hydrodynamic friction in the Hertz limit.
Wu H , Moyle N , Jagota A , Hui CY . Wu H , et al. Soft Matter. 2020 Mar 21;16(11):2760-2773. doi: 10.1039/c9sm02447f. Epub 2020 Feb 26. Soft Matter. 2020. PMID: 32100796
Lubricated sliding on soft elastic substrates occurs in a variety of natural and technological settings. It very often occurs in the iso-viscous elasto-hydrodynamic lubrication (EHL) regime (e.g., soft solid, low pressure). ...
Lubricated sliding on soft elastic substrates occurs in a variety of natural and technological settings. It very often occurs …
60 results