Results 41 to 50 of about 3,171,566 (182)

Matter Effects in Active-Sterile Solar Neutrino Oscillations [PDF]

open access: yes, 2009
The matter effects for solar neutrino oscillations are studied in a general scheme with an arbitrary number of sterile neutrinos, without any constraint on the mixing, assuming only a realistic hierarchy of neutrino squared-mass differences in which the ...
Giunti, C., Li, Y. F.
core   +1 more source

Active Matter on Asymmetric Substrates

open access: yes, 2011
For collections of particles in a thermal bath interacting with an asymmetric substrate, it is possible for a ratchet effect to occur where the particles undergo a net dc motion in response to an ac forcing.
Drocco, J.   +4 more
core   +1 more source

Informational active matter

open access: yes, 2023
Abstract Many biomolecular systems can be viewed as ratchets that rectify environmental noise through measurements and information processing. As miniaturized robots cross the scale of unicellular organisms, on-board sensing and feedback open new possibilities for propulsion strategies that exploit fluctuations rather than fight them.
Bryan VanSaders, Vincenzo Vitelli
openaire   +3 more sources

Active Microrheology in Active Matter Systems: Mobility, Intermittency and Avalanches

open access: yes, 2015
We examine the mobility and velocity fluctuations of a driven particle moving through an active matter bath of self-mobile disks for varied density or area coverage and varied activity.
Reichhardt, C., Reichhardt, C. J. Olson
core   +1 more source

Anisotropic swim stress in active matter with nematic order [PDF]

open access: yes, 2018
Active Brownian Particles (ABPs) transmit a swim pressure $\Pi^{swim}=n\zeta D^{swim}$ to the container boundaries, where $\zeta$ is the drag coefficient, $D^{swim}$ is the swim diffusivity and $n$ is the uniform bulk number density far from the ...
Brady, John F., Yan, Wen
core   +3 more sources

Macroscopic, artificial active matter

open access: yesNational Science Open
Artificial active matters on a macroscopic scale, including vibrating particles, robots, and camphor boats, have attracted increasing attentions due to their uniform properties, rich and easily controllable parameters, convenient observation, and the ...
Ning Luhui   +6 more
doaj   +1 more source

Effective temperature of active complex matter

open access: yes, 2011
We use molecular dynamics simulations to study the dynamics of an ensemble of interacting self-propelled semi-flexible polymers in contact with a thermal bath. Our intention is to model complex systems of biological interest.
Cugliandolo, Leticia F.   +2 more
core   +1 more source

Formulate Adaptive Biphasic Scaffold via Sequential Protein‐Instructed Peptide Co‐Assembly

open access: yesAdvanced Science
To ensure compositional consistency while mitigating potential immunogenicity for stem cell therapy, synthetic scaffolds have emerged as compelling alternatives to native extracellular matrix (ECM).
Yazhou Chen   +8 more
doaj   +1 more source

Active Matter Ratchets with an External Drift

open access: yes, 2013
When active matter particles such as swimming bacteria are placed in an asymmetric array of funnels, it has been shown that a ratchet effect can occur even in the absence of an external drive. Here we examine active ratchets for two dimensional arrays of
Reichhardt, C., Reichhardt, C. J. Olson
core   +1 more source

Rotaxanes with a photoresponsive macrocycle modulate the lipid bilayers of large and giant unilamellar vesicles

open access: yesCommunications Chemistry
Rotaxanes equipped with actuators hold great potential for developing highly functional molecular machines. Such systems could significantly enhance our ability to study and manipulate biological and artificial membranes.
Udyogi N. K. Conthagamage   +10 more
doaj   +1 more source

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