ライフサイエンスコーパス: friction

1 and propagate outward (stiff substrate/high friction).

2 l properties, biocompatibility, and ultralow friction.

3 spacing that can account for the changes in friction.

4 ing an initial (default) slider position and friction.

5 f the blastoderm and an increase of external friction.

6 well as an exceptionally low coefficient of friction.

7 annel structure can strongly enhance sliding friction.

8 etween two rough bodies controls interfacial friction.

9 s responsible for the enhancement of sliding friction.

10 toward mechanical stimuli such as impact and friction.

11 rmance limits, we altered ceiling and ground friction.

12 s with strongly enhanced adhesion and static friction.

13 na, such as structural phase transitions and friction.

14 ntimate contact is reduced, thereby reducing friction.

15 cture theory to fundamental understanding of friction.

16 ts taking advantage of flexing, adhesion and friction.

17 nocontacts-the elementary building blocks of friction.

18 at this can also strongly affect interfacial friction.

19 um model of biofilm growth against substrate friction.

20 ing the red giant phase and shrinks owing to friction.

21 s in fault-normal stress, which affect fault friction.

22 nds to stay in motion but is often slowed by friction.

23 , allowing us to question the nature of this friction.

24 ctively resulting in spatially heterogeneous friction.

25 able to detect the long sought after vacuum friction(7-10) near a surface under realistic conditions

26 esistance forces due to tissue elasticity or friction(8-10).

27 y proposed to be driven by the activation of friction above an onset stress needed to overcome repuls

28 ko feet, where hierarchical features enhance friction across the contact area.

29 amorphous layer that would have formed upon friction against bone, antler, ivory or wood.

30 at results from a balance between weight and friction, allowing us to question the nature of this fri

31 their global motion is controlled by solvent friction alone, with ruggedness of their energy landscap

32 We show that Hec1 tail phosphorylation tunes friction along polymerizing microtubules and yet does no

33 greater at the Nankai Trough owing to higher friction, although initially overpressured fluid at the

34 Phase-specific friction analysis revealed higher coefficient of frictio

35 ity emerges as a result of relatively higher friction and a non-planar geometry of the Main Himalayan

36 enhanced flexural strength by increasing the friction and adhesion between the 2D graphene nanosheets

37 Friction and adhesion were positively correlated, as wer

38 t efforts have focused on enhancing the anti-friction and anti-wear properties of lubricants by incor

39 al-element alloys that contribute to lattice friction and back stress hardening, as a general strateg

40 regional variation in the type of financial friction and calibrate it to measured variation in regio

41 equent merger, possibly because of dynamical friction and collisions within the cloud or later gas dr

42 er such properties as adhesion, lubrication, friction and corrosion, and is important in many process

43 a semi-ellipse section channel with minimum friction and erosion.

44 adhesion were positively correlated, as were friction and fin ray angle.

45 Displacements, timescale, friction and force constant of the underlying dynamics a

46 ach for measuring local evolution of dynamic friction and has important implications for understandin

47 e methods probe different facets of internal friction and have been applied to disparate molecular sy

48 ar dynamics simulations, fully incorporating friction and inelastic collisions, are designed to repro

49 le of a polypeptide to be the sum of solvent friction and internal friction timescales.

50 p surface is characterized by rate-weakening friction and its lateral dimensions exceed a critical nu

51 igue-resistant hydrogel coatings exhibit low friction and low wear against natural cartilages.

52 We show that, when the apparent friction and packing fraction are normalized by their co

53 heir rheological properties such as apparent friction and packing fraction are still elusive when ine

54 crobalance (QCM) study of tuning interfacial friction and slip lengths for aqueous suspensions of TiO

55 fects of overpressurized fluids, low dynamic friction and stress concentrations induced by deep fault

56 important step toward an accurate theory of friction and substrate-mediated interactions between bac

57 s from the interplay between the anisotropic friction and the active force field.

58 led system by considering both thermodynamic friction and the entropic cost of precisely directing a

59 This result makes a link between friction and the plasticity of amorphous materials where

60 ctions can be used to engineer interfilament friction and thus tune the properties of fibrous composi

61 experimental observations of layer-dependent friction and transient frictional strengthening on graph

62 The reduced friction and wear at ambient temperature is due to the p

63 could bring further improvements by reducing friction and wear between moving parts.

64 Minimizing friction and wear continues to be a challenge, and recen

65 as highly effective lubricant additives for friction and wear reduction.

66 cating oil additives with high efficiency in friction and wear reduction.

67 Friction and wear were measured in every direction on th

68 der and orientation affect the tribological (friction and wear) performance of gallium nitride (GaN),

69 n when nano-objects are introduced to reduce friction and wear.

70 ed the direction of motion using anisotropic friction, and alternate contractions of the girdle muscl

71 nge of phenomena including surface adhesion, friction, and colloid stability but their contribution o

72 e to tailor the surface wettability, surface friction, and electrical conductivity is demonstrated.

73 generation, protein clustering by asymmetric friction, and entropic expansion forces will help advanc

74 zed across variations in scenario, material, friction, and motion energy.

75 ay be induced by electronic excitation under friction, and the nanoscale current-voltage spectra anal

76 interaction, sliding kinematics, interfacial friction, and their combination.

77 tion correlate with the presence of internal friction, and theoretical models of polymer dynamics pro

78 The hydrogel skins also provide superior low-friction, antifouling, and ionically conductive surfaces

79 , which establish that nonuniform growth and friction are fundamental determinants of stress anisotro

80 The combined high wear resistance and low friction are linked to the formation of an ultra-nanocry

81 rpreted by showing that classical sources of friction are minimized, so that the aerodynamical resist

82 in the transverse direction and low surface friction are undesirable for applications requiring resi

83 teractions with the substrate by adhesion or friction are widely accepted as a prerequisite for mamma

84 perimentally testable evidence that internal friction arises from concerted, crankshaft-like dihedral

85 mooth and protective tissue that enables low friction articulation of synovial joints.

86 y flow is screened, can be achieved by using friction as a control parameter.

87 anical work, and passive interfaces generate friction as the kinetochore moves along microtubules [3,

88 mall particles may be subject to adhesion or friction, as expected theoretically and numerically.

89 rgy dissipation arise from the thermodynamic friction associated with pushing a system out of equilib

90 al take issue with our main conclusion that friction at the glacier bed does not control fast glacie

91 y processes from which it is derived, namely friction at the ice-bed interface and form drag, and the

92 treat promote basal freezing which increases friction at the tongue by stabilizing an efficient basal

93 ly characterize the nature of the trans side friction based on MD simulations.

94 action (HFSR), in which sites of pressure or friction become inflamed and painful, thus significantly

95 MoS(2)-GO solid lubricant in mitigating wear-friction behavior of steel-on-steel tribopair in a multi

96 e ball bearings to reduce the coefficient of friction between both hard and soft natural surfaces in

97 triction, which mainly relies on the surface friction between cells and the channel wall.

98 scribe an elegant biophysical model in which friction between lipids and BAR-domain proteins drives t

99 e teeth cleaning techniques, such as through friction between teeth and food during chewing.

100 e steady-state cell velocity via the viscous friction between the cell and the channel walls.

101 via a hydrodynamic mechanism based on Darcy friction between the contracting network and the surroun

102 both the biofilm and the substrate, and the friction between them.

103 The coated wires reduce friction by eightfold, and remain stable over 50 test cy

104 Furthermore, we demonstrate that friction can be reduced by modification of the body's sh

105 e analytically and numerically how radiation friction can dramatically enhance the energy gain by ele

106 d along <1[Formula: see text]00> while lower friction coefficient always appeared along <1[Formula: s

107 strength is the product of a slip-weakening friction coefficient and the local effective normal stre

108 the fundamental physics of the laminar skin friction coefficient and the related drag reduction due

109 On the contrary, higher friction coefficient can be observed along <1[Formula: s

110 Friction coefficient determined by tribology measurement

111 t could be shown for the first time that the friction coefficient during swing phase was statisticall

112 ults have revealed a drastic decrease of the friction coefficient for velocities close to the maximum

113 nism can be associated with the reduction of friction coefficient of the deformed sample.

114 n recently formulated in which a generalized friction coefficient quantifies the energetic efficiency

115 that static conditions can underestimate the friction coefficient rather than reflecting the in vivo

116 The static friction coefficient was found to be [Formula: see text]

117 N; a 60 degrees periodicity of wear rate and friction coefficient was observed.

118 nical data (brittle compressive strength and friction coefficient) obtained for each of the zones sug

119 inulin) and their effects on water mobility, friction coefficient, thermal behavior, crystalline patt

120 sely proportional to the square root of that friction coefficient.

121 cuum and show that it is associated with low friction coefficients (~0.3).

122 t even if the dynamic and static microscopic friction coefficients are identical, but disappears for

123 M, zwitterionic bottlebrush polymers exhibit friction coefficients as low as ~10(-3) at such concentr

124 We show that both static and dynamic friction coefficients decrease with viscosity and that d

125 h lead to moderate or high friction, whereas friction coefficients down to [Formula: see text] are ob

126 reduction in the shear stress and the local friction coefficients have been computed over a wide ran

127 id-solid phase transitions occur and explain friction coefficients spanning several orders of magnitu

128 w solid lubricant reduced the coefficient of friction (COF) by 85% between two steel surfaces compare

129 aphene matrix that provides a coefficient of friction (COF) of 0.01.

130 the TFMG coatings achieved a coefficient of friction (COF) of just approximately 0.05, which is abou

131 The low coefficient-of-friction (CoF) of Zr-based MG-coated dicing blades was s

132 Productivity losses were estimated with a friction cost approach for physical inactivity related m

133 plified in a scenario where spatially random friction counter-intuitively results in a highly directi

134 Increased ceiling friction decreased velocity by decreasing stride length

135 ctional motion of the colony interface, with friction depending on the local concentration of the non

136 nts decrease with viscosity and that dynamic friction depends on the dimensionless Sommerfeld number

137 d the associated enhancement of steady-state friction, diminishes as the number of two-dimensional la

138 dy-friction legged crawling" with body drag, friction-dominated leg thrust, but no media flow as in a

139 FRET and PET measurements show that internal friction dominates unfolded-state dynamics at low denatu

140 d prevent it from early transition, reducing friction drag.

141 by top-down microfabrication (dry adhesives, friction driven), and represent a unique fluid (aqueous)

142 We call this mechanism friction-driven scission (FDS).

143 show that their motion is dominated by skin friction due to the boundary layer that forms in the flu

144 that protects it, experiences internal chain friction during folding.

145 port on novel measurements of evolving local friction during spontaneously developing mini-earthquake

146 In contrast, internal friction effects are important for polymers of modest le

147 ase PilU may improve retraction only in high-friction environments.

148 lacier sliding is independent of basal drag (friction), even where drag balances most of the driving

149 agnitude of earthquakes is determined by the friction evolution along faults.

150 Yet dynamic friction evolution is one of the biggest uncertainties i

151 r any given component takes into account the friction exerted by all other species and is invariant w

152 Here we investigate the friction experienced by centimeter-sized bodies sliding

153 nsight from laboratory solid-state creep and friction experiments can successfully explain the spatia

154 We present friction experiments performed on both dry and fluid-per

155 Using friction experiments, we demonstrate that, at seismic sl

156 e need for operational models describing the friction factor f in streams remains undisputed given it

157 The main novelty is that the friction factor of vegetated flow can be expressed as f(

158 timal kirigami designs capable of modulating friction for a range of surfaces, including ice, by eval

159 tion analysis revealed higher coefficient of friction for B2 compared to L1(2).

160 tem dynamics are polymer-like with increased friction for low silica loadings, they turn network-like

161 ler than a theoretical value that assumes no friction for the dye molecule's permeation through the p

162 w-layer two-dimensional materials the static friction force gradually strengthens for a few initial a

163 scale study of the decay of the interfacial friction force in rock, observed in experiemntal studies

164 The adhesion and friction forces can then be inferred indirectly using Fu

165 applied to footwear outsoles generate higher friction forces in the forefoot and transversally to the

166 cantilever to directly measure adhesion and friction forces with nanonewton force resolutions.

167 prings, and with the environment via sliding friction forces.

168 on and compaction of fibers held together by friction forces.

169 surements are consistent with rate-and-state friction formulations supplemented with flash heating bu

170 New technologies for sequencing, aided by friction-free approaches to data sharing, could have an

171 dictable toe pad friction with probabilistic friction from their claws, which they drag to find surfa

172 o of active stress zetaDeltamu, and per-area friction gamma, we evaluated the response to laser ablat

173 intrinsically disordered proteins, internal friction has a large influence, as demonstrated with sev

174 Molecular dynamics with electronic friction has been used to model the effect of electron-h

175 The observed friction has complex evolution, featuring initial veloci

176 his peculiar behavior is caused by radiation friction, i.e., the energy loss of an accelerated charge

177 Reducing friction improves efficiency by lowering energy/fuel use

178 Friction in ordered atomistic layers plays a central rol

179 Internal friction in proteins, in particular, affects how fast th

180 te a simple, well-controlled system in which friction in self-organized structures can be studied fro

181 Our results support the feasibility of low-friction in situ energy harvesting from both liquids and

182 arthquake nucleation based on rate-and-state friction in the manner of spring-sliders, and analyze co

183 erning the folding and the level of internal friction in the molecule, but it is challenging to measu

184 oherent and quantitative picture of internal friction in unfolded proteins that could not be attained

185 we explore the molecular origins of internal friction in unfolded proteins using atomistic simulation

186 echanical properties, in particular ultralow friction, in contrast to their bulk counterparts.

187 nstability was basal freezing and associated friction increase under the glacier tongue.

188 o find that unlike static pure bending where friction increases bending stiffness, a corresponding in

189 tilayer graphene and graphite, and that this friction increases with continued sliding, but the mecha

190 sis of the tribolayers suggested in-operando friction-induced re-orientation of MoS(2) layers that we

191 this escape rate boost extends into the low-friction inertial regime.

192 can be couched as a design principle for low-friction interfaces.

193 The dependence of sliding on basal friction is a key unknown: nonlinear relationships favou

194 nalysis reveals that the evolution of static friction is a manifestation of the natural tendency for

195 Internal friction is an important contribution to protein dynamic

196 This ultralow friction is attributed to sliding at the incommensurate

197 We find that at low velocities, friction is controlled by hydrodynamic flow through the

198 cous damping behavior even when only Coulomb friction is postulated for free vibrations.

199 Lubricin's ability to reduce friction is related to its glycosylation consisting of s

200 ailed, microscopic understanding of hydrogel friction is still emerging.

201 w that the interplay of tissue spreading and friction is sufficient to drive the initial phase of che

202 Conventionally, friction is understood as a mechanism depleting a physic

203 red linear response reveals an instantaneous friction kernel despite the complexity of the bacterial

204 responding to a nonmonotonic behavior in the friction law, [Formula: see text], is present even if th

205 linear poroelastic model and rate-and-state friction law, we compute the changes in crustal stress a

206 ting but not with widely used slip-weakening friction laws.

207 l of an unexplored mode of locomotion--"body-friction legged crawling" with body drag, friction-domin

208 ical-state soil mechanics and rate-and-state friction), less is known about the field-scale environme

209 ulted in increased and decreased interfacial friction levels and slip lengths.

210 e length attaining a maximum at intermediate friction levels.

211 To test for friction-limited folding, we performed a comprehensive t

212 erve as a potential source of internal chain friction-limited folding.

213 regions play a critical role in driving the friction-limited folding.

214 Similarly, the HFG surface friction may be tailored between the two extremes.

215 Here, using spatially resolved position and friction measurements of cold trapped ions in an optical

216 ubricating layer, which, with coefficient of friction mu approximately 0.001 at pressures to over 100

217 ce length [Formula: see text] the trans side friction must be explicitly taken into account to proper

218 r interrelating the contribution of internal friction observed in the two types of experiments and in

219 t a revised understanding of the anisotropic friction observed on graphene and bulk graphite in terms

220 nanocrystals using a framework developed for friction of adatoms on various surfaces.

221 It reduces the coefficient of friction of articular cartilage under boundary mode cond

222 Hence, the question arises how friction of both tissues is affected by physiological te

223 f the physical processes taking place during friction of chert and flint against different materials.

224 s critical for explaining the time-dependent friction of configurationally flexible interfaces.

225 cular mechanisms giving rise to the internal friction of disulfide-reduced mSOD1 might play a role in

226 The macroscopic friction of particulate materials often weakens as the f

227 However, sliding friction of structured rubbery surfaces is almost always

228 Meanwhile, the surface friction of the coated fiber increases twofold as a resu

229 similar strength to an entropic spring, with friction of the fragment matching the unbound state.

230 In these patients, friction of the skin induces mast cell hyper-degranulati

231 e motional time scales of the protein on the friction of the solvent.

232 plet actuation is facilitated by low surface friction on fluorous silica nanoparticle-based superhydr

233 without complications from viscous and solid friction on surfaces.

234 Owing to the friction on the walls of the conduit, this plug becomes

235 nts to investigate the dependence of dynamic friction on transient changes in normal stress, demonstr

236 Through simple finger friction or hand slapping of the wearable TENGs, it succ

237 ion and propagate inward (soft substrate/low friction) or in the central region and propagate outward

238 We find the viscous friction parameter A to be an order of magnitude smaller

239 e were able to measure local interaction and friction parameters using Grazing Incidence Neutron Spin

240 ding test and demonstrated an excellent wear/friction performance in all environments and coating sur

241 Friction plays a key role in how ruptures unzip faults i

242 As friction properties are of major importance for meniscal

243 eraction of repeating sequences to constrain friction properties of creeping segments.

244 investigated the remarkably low and complex friction properties of meniscus and cartilage under cons

245 Further, the friction properties of the exemplary biomaterial were al

246 fault physics and characterization of fault friction properties.

247 in, and could in principle apply to any high-friction protein and membrane assembly.

248 chanical stress from the motile species, and friction provided by the non-motile species, fully repro

249 While no aqueous removal of polyacrylamide friction reducer was observed over a period of 6 months,

250 Polyacrylamide (PAM) based friction reducers are a primary ingredient of slickwater

251 his improved understanding of the physics of friction reduction provides key guidelines for designing

252 r a few days as the till entered an unstable friction regime.

253 us to be small for stable perching when high friction relative to normal force is required because cl

254 Increased ground friction resulted in velocity and stride length attainin

255 When the highly impact- and friction-sensitive compound [VO(N3)3] was reacted with 2

256 Impact, spark, and friction sensitivity measurements, computationally calcu

257 30.1 GPa, an impact sensitivity of 2 J, and friction sensitivity of 20 N make 4 a good candidate as

258 ce (normal loading) while maximizing sliding friction (shear loading).

259 rface, but this trend reverses when required friction shrinks.

260 esponse showed microstructural dependence in friction stir processed, annealed and tensile-deformed s

261 m alloy, Ti-6Al-2Sn-4Zr-6Mo (Ti6246) through friction stir processing (FSP).

262 nd ductile non-equiatomic HEA obtained after friction stir processing (FSP).

263 quantified as functions of alloy chemistry, friction stir processing and tensile deformation.

264 t rat during overground locomotion on a high-friction surface.

265 Using a dynamic friction testing device, three different friction tests

266 s through numerical simulations and in vitro friction testing, as well as via human-gait force-plate

267 mic friction testing device, three different friction tests were conducted to investigate the influen

268 ability to the films examined in macroscopic friction tests.

269 ally that monolayer graphene exhibits higher friction than multilayer graphene and graphite, and that

270 lms nearly eliminate wear, and provide lower friction than tribofilms formed with zinc dialkyldithiop

271 omplex fault system operates at low apparent friction thanks to the combined effects of overpressuriz

272 ing regime of the cylinder with an effective friction that is significantly reduced relative to that

273 temperature rising resulting from electrodes friction, the modified TENG with a cooling system has st

274 relaxation time is as large as the internal friction time.

275 We show that the characteristic internal friction timescale is directly proportional to the times

276 be the sum of solvent friction and internal friction timescales.

277 in the molten globule state lead to internal friction to a similar extent.

278 ing, and twinning, and increases the lattice friction to dislocation motion via a nanoscale segment d

279 d highlights the role of internal forces and friction to function.

280 The neuromuscular model counteracts friction to recover these motion patterns, giving rise t

281 The sensitivity of the internal friction to the disulfide bond status suggests that one

282 Removing economic frictions to allow the production system to fit China's

283 to significant reductions in coefficient of friction (up to approximately 40 %) and wear volume (up

284 s on a strike-slip fault with rate-and-state friction, upward Darcy flow along a permeable fault zone

285 at very high Reynolds numbers, where u(*) is friction velocity related to the surface kinematic stres

286 For friction, we find that a consequence is that stick-slip

287 ord with phenomenological models of internal friction, we find the global reconfiguration timescale o

288 stability and sensitivity toward impact and friction were determined.

289 erse electron momentum being reduced through friction whence the driving laser can accelerate the ele

290 he framework of the Zimm model with internal friction, where the chains still interact and hinder eac

291 the interfaces each lead to moderate or high friction, whereas friction coefficients down to [Formula

292 ent, equilibrium modulus, and coefficient of friction, which are key indicators of cartilage function

293 ing were analyzed in evaluating contact line friction, which characterizes the frictional force on th

294 ace are excited by the energy release during friction, which may be due to the transition of electron

295 ng to this phenomenon is the faults' dynamic friction, which may be reduced during earthquakes with h

296 urface, and unilateral contact and Coulombic friction with an uneven surface.

297 They combine predictable toe pad friction with probabilistic friction from their claws, w

298 ing interfaces that can dynamically modulate friction with soft materials and biological tissues, suc

299 are known to display domains of anisotropic friction with twofold symmetry and anisotropy exceeding

300 roplets into the track, fluid drag, and wall friction, with the droplet radius.