Results 1 to 10 of about 154,688 (325)

Orbital torque: Torque generation by orbital current injection [PDF]

Physical Review Research, 2020
We propose a mechanism of torque generation by injection of an orbital current, which we call orbital torque. In a magnetic bilayer consisting of a nonmagnet (NM) and a ferromagnet (FM), we consider a situation where the spin-orbit coupling (SOC) is ...
Dongwook Go, Hyun-Woo Lee
doaj   +7 more sources

Torque generation of Enterococcus hirae V-ATPase. [PDF]

J Biol Chem, 2014
V-ATPase (V(o)V1) converts the chemical free energy of ATP into an ion-motive force across the cell membrane via mechanical rotation. This energy conversion requires proper interactions between the rotor and stator in V(o)V1 for tight coupling among chemical reaction, torque generation, and ion transport.
Ueno H, Minagawa Y, Hara M, Rahman S, Yamato I, Muneyuki E, Noji H, Murata T, Iino R.   +8 more
europepmc   +6 more sources

Switching and Torque Generation in Swarming E. coli [PDF]

Frontiers in Microbiology, 2018
Escherichia coli swarm on semi-solid surfaces with the aid of flagella. It has been hypothesized that swarmer cells overcome the increased viscous drag near surfaces by developing higher flagellar thrust and by promoting surface wetness with the aid of a
Katie M. Ford, Jyot D. Antani, Aravindh Nagarajan, Madeline M. Johnson, Pushkar P. Lele   +4 more
doaj   +5 more sources

The Bacterial Flagellar Motor: Insights Into Torque Generation, Rotational Switching, and Mechanosensing [PDF]

Frontiers in Microbiology, 2022
The flagellar motor is a bidirectional rotary nanomachine used by many bacteria to sense and move through environments of varying complexity. The bidirectional rotation of the motor is governed by interactions between the inner membrane-associated stator
Shuaiqi Guo, Shuaiqi Guo, Jun Liu, Jun Liu   +3 more
doaj   +2 more sources

Optical torque from enhanced scattering by multipolar plasmonic resonance [PDF]

Nanophotonics, 2014
We present a theoretical study of the optical angular momentum transfer from a circularly polarized plane wave to thin metal nanoparticles of different rotational symmetries.
Lee Yoonkyung E., Fung Kin Hung, Jin Dafei, Fang Nicholas X.   +3 more
doaj   +3 more sources

Proton transport and torque generation in rotary biomotors [PDF]

Physical Review E, 2008
We analyze the dynamics of rotary biomotors within a simple nano-electromechanical model, consisting of a stator part and a ring-shaped rotor having twelve proton-binding sites.
A. Yu. Smirnov, B. Alberts, B. D. Cain, Franco Nori, G. S. Kottas, J. Howard, L. G. Mourokh, S. Savel’ev   +7 more
core   +3 more sources

Torque generation by axonemal outer-arm dynein. [PDF]

Biophys J, 2015
Outer-arm dynein is the main engine providing the motive force in cilia. Using three-dimensional tracking microscopy, we found that contrary to previous reports Tetrahymena ciliary three-headed outer-arm dynein (αβγ) as well as proteolytically generated two-headed (βγ) and one-headed (α) subparticles showed clockwise rotation of each sliding ...
Yamaguchi S, Saito K, Sutoh M, Nishizaka T, Toyoshima YY, Yajima J.   +5 more
europepmc   +4 more sources

Spin-Torque Generation in Topological-Insulator-Based Heterostructures [PDF]

Physical Review B, 2016
Heterostructures utilizing topological insulators exhibit a remarkable spin-torque efficiency. However, the exact origin of the strong torque, in particular whether it stems from the spin-momentum locking of the topological surface states or rather from ...
Fischer, Mark H, Kim, Eun-Ah, Manchon, Aurelien, Vaezi, Abolhassan   +3 more
core   +5 more sources

Transcription factor regulation of RNA polymerase's torque generation capacity. [PDF]

Proc Natl Acad Sci U S A, 2019
Significance RNA polymerase (RNAP) carries out transcription from DNA to RNA. The double-stranded helical nature of DNA necessitates RNAP rotation of DNA during active elongation, leading to DNA supercoiling and the accumulation of torsional stress, which may ultimately stall transcription.
Ma J, Tan C, Gao X, Fulbright RM, Roberts JW, Wang MD.   +5 more
europepmc   +5 more sources

Catalytic robustness and torque generation of the F₁-ATPase. [PDF]

Biophys Rev, 2017
The F1-ATPase is the catalytic portion of the FoF1 ATP synthase and acts as a rotary molecular motor when it hydrolyzes ATP. Two decades have passed since the single-molecule rotation assay of F1-ATPase was established. Although several fundamental issues remain elusive, basic properties of F-type ATPases as motor proteins have been well characterized,
Noji H, Ueno H, McMillan DGG.
europepmc   +4 more sources