ライフサイエンスコーパス: friction

1 t can be conceptually understood as 'protein friction'.

2 na, such as structural phase transitions and friction.

3 ntimate contact is reduced, thereby reducing friction.

4 cture theory to fundamental understanding of friction.

5 ts taking advantage of flexing, adhesion and friction.

6 nocontacts-the elementary building blocks of friction.

7 at this can also strongly affect interfacial friction.

8 formation exhibits little or no evidence of friction.

9 landscape, likely due to increased internal friction.

10 ich exceeds the force of gravity and viscous friction.

11 c forces overcome gravity-loaded grain-grain friction.

12 ffusion coefficient can reflect interleaflet friction.

13 namic cycle working at finite power and zero friction.

14 ected if the solvent were the only source of friction.

15 ty of torsion angle isomerization to solvent friction.

16 e provide the dominant mechanism of internal friction.

17 rties, including superhydrophobicity and low friction.

18 explained by a rate theory including memory friction.

19 trategy to reduce biofouling and interfacial friction.

20 tating faster than is allowed by gravity and friction.

21 tion, with faster channels producing smaller friction.

22 ting activation free energy and contact line friction.

23 re forces are described by isotropic Coulomb friction.

24 annel structure can strongly enhance sliding friction.

25 etween two rough bodies controls interfacial friction.

26 s responsible for the enhancement of sliding friction.

27 toward mechanical stimuli such as impact and friction.

28 rmance limits, we altered ceiling and ground friction.

29 s with strongly enhanced adhesion and static friction.

30 act and substantially reduced coefficient of friction (~0.004).

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

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

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

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

35 uted in a diffuse network can decrease basal friction and accelerate ice flow, whereas channelized ba

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

37 h using ex vivo and in vitro measurements of friction and apoptosis.

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

39 a direct correlation between coefficient of friction and chondrocyte apoptosis in the superficial la

40 ated the relationship between coefficient of friction and chondrocyte death using ex vivo and in vitr

41 In some applications, they are subjected to friction and deformation during contact with each other

42 , lubrication dysfunction leads to increased friction and degeneration of these systems.

43 Understanding nanoscale friction and dissipation is central to nanotechnology.

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

45 hat the strong coupling between contact-line friction and geometric confinement gives rise to a new s

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 to GUVs, there is also a strong increase in friction and in mean first passage time normal to the ce

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 s of low water contact angle hysteresis, low friction and mechanical robustness can find application

52 splays an analogous physical response to the friction and noise that drive the heat current through a

53 ants overcoming a barrier in the presence of friction and noise.

54 nificantly lowered the static coefficient of friction and number of apoptotic chondrocytes.

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

56 erized by their vibrational spectra, impact, friction and thermal sensitivity data and, in the case o

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

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

59 The reported results suggest that friction and triboelectrification have a common origin t

60 Friction and triboelectrification of materials show a st

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

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

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

64 ubricant additives, resulting in significant friction and wear reduction along with distinct tribofil

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

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

67 Friction and wear remain as the primary modes of mechani

68 Friction and wear were measured in every direction on th

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

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

71 he physical parameters (such as the membrane friction) and the biochemical interactions governing the

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

73 cally with sliding velocity as in solid-like friction, and exhibit complex dependence on the filament

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

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

76 erized by their vibrational spectra, impact, friction, and thermal sensitivity data and, in the case

77 at the folding events with greatest internal friction are those that mainly involve helix formation,

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

79 A theoretical analysis reveals that channel friction arises from coupling the dynamics of the confor

80 ding transition paths, we show that internal friction arises when torsion angle changes are an import

81 wer dissipation was dominated by the viscous friction around the IHC stereocilia bundle--the IHC ster

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

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

84 hat these effects result from inter particle friction, as lubrication forces are overcome.

85 give rise to a drastically enhanced viscous friction, as revealed by the slow relaxation of an attac

86 rque induced on the cells while reducing the friction at the cell-cell and cell-substrate interfaces,

87 Continuous sidewall friction at the contact interface of the oscillator indu

88 e molecules cannot explain the extremely low friction at the high pressures of such joints.

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

90 he surface of human cartilage it reduces the friction at the interface and acts as a lubricant.

91 our newly developed Green-Kubo relation for friction at the liquid-solid interface.

92 Friction at the nanoscale has revealed a wealth of behav

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

94 of the rupture zone; our knowledge of fault friction based on these estimates therefore needs to be

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

96 d kinesin density, which, in contrast to the friction behaviour between microtubules and kinesin-8, c

97 and depend on filament polarity, with NuMA's friction being lower when moving toward minus ends, EB1'

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

99 se that surfactin-producing cells reduce the friction between cells and their substrate, thereby faci

100 capsid DNA mobility is caused by the sliding friction between closely packaged DNA strands, as a resu

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

102 Friction between ordered, atomically smooth surfaces at

103 that ezrin acts as a link that leads to low friction between the membrane and the cortex.

104 ong the direction of movement due to viscous friction between the membrane and the cytoskeleton-attac

105 ower dissipation was determined by the shear friction between the two flat surfaces of the STS.

106 Yet the nature of the sliding friction between two aligned filaments interacting throu

107 We characterized friction by analyzing hysteresis in the force-displaceme

108 xperiments have shown that the corresponding friction can be separated into wet friction, which is de

109 We show that stick-slip friction can be tuned from maximal to nearly frictionles

110 ult friction experiments, demonstrating that friction can generate sufficient heat to induce melting

111 ce Forces Apparatus, we show that stick-slip friction can induce permanent morphological changes (a c

112 periments confirm, that MAPs with asymmetric friction can move directionally within actively moving m

113 ) species may be explained by the mechanical friction caused by the coating application by brush that

114 Young's modulus of >800 kPa and equilibrium friction coeffcient of <0.3.

115 0.5 wt% GNP exhibited a 23% reduction in the friction coefficient along with a promising 70% wear rat

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

117 We computed the friction coefficient and coefficient of viscosity of the

118 Furthermore, the low friction coefficient and excellent scratch resistance ma

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

120 that (i) wear is not directly related to the friction coefficient but (ii) more directly related to s

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

122 The resulting apparent friction coefficient of 0.08 is considerably smaller tha

123 or measuring the hydrodynamic, translational friction coefficient of biological macromolecules.

124 The mean friction coefficient of condylar cartilage against steel

125 consistent method to estimate the effective friction coefficient of landslides.

126 are well explained in terms of an effective friction coefficient of the protein induced by the local

127 This method uses a constant basal friction coefficient that reproduces the first-order lan

128 nearly fivefold larger than the hydrodynamic friction coefficient that was measured when the transduc

129 al simulations of landslides require a small friction coefficient to reproduce the extension of their

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

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

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

133 Amorphous carbon, given its low friction coefficient, is responsible for flash weakening

134 resence of the actin shell leads to a larger friction coefficient.

135 , at 0.074, displayed a significantly higher friction coefficient.

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

137 suggest that because the rolling and sliding friction coefficients differ substantially, the spheres

138 Friction coefficients measured for this system were as l

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

140 The increased friction considerably decelerates association in the oth

141 alternating velocities, force constants, and friction constants along the surface of the filopodia.

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

143 Increased ceiling friction decreased velocity by decreasing stride length

144 We show that friction decreases with increasing volume or, more funda

145 Instead steric factors and medium friction determine the reaction pathway, with the steric

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

147 uncover the atomistic origin of the observed friction domains using a cantilever torsion microscopy i

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

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

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

151 The recent detection of the electronic-friction drop caused by the onset of superconductivity i

152 e to the interplay between wall fracture and friction during deformation.

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

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

155 and its operating time finite, thus implying friction effects at short cycle times.

156 an explanation for the variation of internal friction effects from protein to protein and across the

157 s have revealed strong evidence for internal friction effects.

158 acterized in terms of sensitivities (impact, friction, electrostatic) and thermal stabilities, and th

159 This dramatic confinement-induced friction enhancement we argue to be due to a combination

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

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

162 lting induced via rapid heating during fault friction experiments, demonstrating that friction can ge

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

164 Under parabolic base flow the friction factor overshoots Moody's correlation.

165 We found that the interlayer friction for insulating BNNTs results in ultrahigh visco

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

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

168 ve previously undetected oscillations in the friction force between water and carbon nanotubes and sh

169 Friction force fluctuations are always accompanied by tw

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

171 tile cells at the periphery of the film, and friction forces associated with two types of cellular fl

172 tic molecular dynamics simulations to obtain friction forces for the relative sliding of peptide chai

173 Importantly, friction forces increased up to 2, 10, and 5 times after

174 matic specification of their separation, the friction forces, and the mass of each body.

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

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

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

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

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

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

181 The observed friction has complex evolution, featuring initial veloci

182 As for any mechanical system, friction impedes movements of the hair bundle and thus c

183 Reducing friction improves efficiency by lowering energy/fuel use

184 ssemblies; thus, it is desirable to minimize friction in a number of applications.

185 Friction in ordered atomistic layers plays a central rol

186 vances, the molecular origins underlying dry friction in proteins have remained unclear.

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

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

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

190 odels, we are able to determine the internal friction in the folding of several peptides and miniprot

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

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

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

194 ing is understanding the origin of "internal friction" in folding dynamics, experimentally identified

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

196 ughness in the energy landscape, or internal friction, in these peptides.

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

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

199 of the images enable studies of the viscous friction involved in the flow of liquid within the nanot

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

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

202 Internal friction is an important contribution to protein dynamic

203 itivity of local barrier crossing to solvent friction is expected to contribute to the viscosity depe

204 Friction is generally thought to result mainly from visc

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

206 ssurized zone and obeys a rate-strengthening friction law mu = 0.67 + 0.045ln(v/v(0)) with v(0) = 0.1

207 , we propose an empirical velocity-weakening friction law under a unifying phenomenological framework

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

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

210 The large value of the internal friction leads to the breakdown of the Zimm model.

211 logy with macroscopic granular systems where friction leads to two different types of jammed state.

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

213 e length attaining a maximum at intermediate friction levels.

214 show that lubricin functions as an effective friction-lowering boundary lubricant at the human cornea

215 tions was then estimated using the predicted friction map.

216 load and speed regimes can be represented by friction maps--separating regimes of smooth and stick-sl

217 only the increased deformability but reduced friction may be a factor in enabling invasive cancer cel

218 We propose that this intrinsic source of friction may contribute to the process that sets the hai

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

220 Recently, friction measurements on graphene exfoliated on a silico

221 sts) yielded positive identification of used friction modifier additives.

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

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

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

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

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

227 The interlayer viscous friction of BNNTs suggests that BNNT membranes could ser

228 Whereas the friction of condylar cartilage decreased with increased

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

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

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

232 ndependent of the magnitude of normal force, friction of the disc showed no dependence on sliding spe

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

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

235 without complications from viscous and solid friction on surfaces.

236 we also show that this strong dependence of friction on the structural mismatch, as predicted by man

237 models that account for interleaflet leaflet friction on tracer mobility.

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

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

240 microscopic and systematic investigation of friction, potentially even into the quantum many-body re

241 brating in fluid are subject to high-viscous friction, previous studies considered the STS as the pri

242 lation if the appropriate position-dependent friction profile is included.

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

244 fault physics and characterization of fault friction properties.

245 obtain their region- and direction-dependent friction properties.

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

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

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

249 nction as load-bearing, shock-absorbing, and friction-reducing materials.

250 The underside of the lid is coated with friction-reducing wax crystals, making insects more vuln

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

252 Increased ground friction resulted in velocity and stride length attainin

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

254 0 m s(-1)), as well as acceptable impact and friction sensitivities (IS, 4-30 J; FS, 40-240 N).

255 ood thermal stability, acceptable impact and friction sensitivities, and excellent detonation propert

256 30.1 GPa, an impact sensitivity of 2 J, and friction sensitivity of 20 N make 4 a good candidate as

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

258 degree of concaveness reach a shape-effected friction similar to, and sometimes larger than that of,

259 on to all relaxation times due to intrachain friction sources.

260 ations, we present a phase diagram in strain-friction space that shows chaotic dispersion, crystal fo

261 rformance, and improved thermal, impact, and friction stabilities, then those of its precursor, 3-din

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

263 ia a coordinate that is sensitive to solvent friction, such as rotation about the bridging bond.

264 es, with objects having either a high or low friction surface (i.e. rough or slippery).

265 a viscous medium, grains of sand, or a high-friction surface; additionally they must work to bend th

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

267 d the lateral-medial direction showed higher friction than the anterior-posterior direction on both t

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

269 ills, but also because diversity facilitates friction that enhances deliberation and upends conformit

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

271 tio of protrusive stress to tissue-substrate friction, that allows classification of different phenot

272 With decreasing temperature and mutual friction, the internal dynamics of the superfluid compon

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

274 ure are maintained robustly by autotuning of friction through these internal states, providing a prev

275 namics simulations we estimated the internal friction time scales and found them to agree well with t

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

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

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

279 actility, tissue fluctuations, and effective friction to qualitatively and quantitatively account for

280 associated with a transition from solid-like friction to Stokes's drag, can be induced by coating F-a

281 setse genetic flow, hereafter referred to as friction, to identify natural barriers that isolate tset

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

283 hereas for the semimetallic CNTs the sliding friction vanishes within experimental uncertainty.

284 However, it was unclear why internal friction varied from protein to protein or for different

285 ons under high turbulence [summer night mean friction velocity (u*) = 0.7 m s(-1)], during which bark

286 Stick-slip friction was observed in articular cartilage under certa

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 determined by the solvent viscosity, and dry friction, where frictional effects arise due to the inte

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

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

292 cts with the superfluid component via mutual friction, which damps the motion of quantized vortex lin

293 esponding friction can be separated into wet friction, which is determined by the solvent viscosity,

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

295 model that takes into account border forces, friction with the substrate, and tissue rheology.

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

297 Varying channel properties affects friction, with faster channels producing smaller frictio

298 acquire a local time-averaged coefficient of friction within a large range of intermediate values in

299 Friction within globular proteins or between adhering ma

300 l molecular origin and magnitude of internal friction within the amorphous matrix has remained inacce

301 he framework of the Zimm model with internal friction (ZIF), a large offset of 81.6 ns is needed as a