Results 51 to 60 of about 140,438 (194)

Hydrodynamics of metachronal paddling: effects of varying Reynolds number and phase lag [PDF]

open access: yesRoyal Society Open Science, 2019
Negatively buoyant freely swimming crustaceans such as krill must generate downward momentum in order to maintain their position in the water column. These animals use a drag-based propulsion strategy, where pairs of closely spaced swimming limbs are ...
Mitchell P. Ford   +3 more
doaj   +1 more source

Oceanic lobate ctenophores possess feeding mechanics similar to the impactful coastal species Mnemiopsis leidyi

open access: yesLimnology and Oceanography, Volume 67, Issue 12, Page 2706-2717, December 2022., 2022
Abstract Lobate ctenophores are often numerically dominant members of oceanic epipelagic and midwater ecosystems. Despite this, little is known about their trophic ecology. Multiple, co‐occurring species are often found in these ecosystems and appear to feed similarly via feeding currents that entrain prey.
Malaika Cordeiro   +4 more
wiley   +1 more source

Influence of metachronal ciliary wave motion on peristaltic flow of nanofluid model of synovitis problem

open access: yesAIP Advances, 2022
In this article, we have considered the effect of metachronal ciliary wave motion on the peristaltic flow of the Buongiorno nanofluid model for the synovitis problem.
Asha S. Kotnurkar, Namrata Kallolikar
doaj   +1 more source

Metachronal waves in magnetic micro-robotic paddles for artificial cilia [PDF]

open access: yesCommunications Materials, 2021
AbstractBiological cilia generate fluid movement within viscosity-dominated environments using beating motions that break time-reversal symmetry. This creates a metachronal wave, which enhances flow efficiency. Artificially mimicking this behaviour could improve microfluidic point-of-care devices, since viscosity-dominated fluid dynamics impede fluid ...
Andrew D. Gilbert   +5 more
openaire   +3 more sources

A Synthetic Minimal Beating Axoneme

open access: yesSmall, Volume 18, Issue 32, August 11, 2022., 2022
Cilia and flagella are cellular appendages that beat rhythmically to transport fluids and propel living organisms. The authors report the reconstitution of a synthetic cilium from the bottom up using biological building blocks, namely microtubules and axonemal dynein.
Isabella Guido   +7 more
wiley   +1 more source

Metachronal wave formation in 3D cilia arrays for mucus transport

open access: green, 2017
Propulsion by beating cilia is an universal phenomenon developed by nature as a way to propel fluids. For the particular case of the human body, cilia are responsible for the left-right asymmetry of the heart in the early embryonic development, for the transport of nutrients in the brain, and for the transport of bronchial mucus in the mucociliary ...
Chateau, Sylvain   +3 more
openaire   +4 more sources

Recent Progress in Active Mechanical Metamaterials and Construction Principles

open access: yesAdvanced Science, Volume 9, Issue 1, January 5, 2022., 2022
Active mechanical metamaterials (AMMs) are newly emerged metamaterials in recent decades. Due to the elaborately designed internal micro‐structures and stimuli‐responsive characteristics, AMMs have both the advantages of unusual mechanical properties of mechanical metamaterials and the smart actuation functions of active materials.
Jixiang Qi   +10 more
wiley   +1 more source

Amphibious Transport of Fluids and Solids by Soft Magnetic Carpets

open access: yesAdvanced Science, Volume 8, Issue 21, November 3, 2021., 2021
Artificial magnetic cilia on a soft carpet can be made via a self‐assembly route based on the Rosensweig instability. Soft carpets can transport both liquids and solid objects that are larger and heavier than the artificial cilia, using a crowd‐surfing effect.This amphibious transportation is locally and reconfigurably tunable by simple micromagnets or
Ahmet F. Demirörs   +10 more
wiley   +1 more source

Tailoring Flexible Arrays for Artificial Cilia Actuators

open access: yesAdvanced Intelligent Systems, Volume 3, Issue 10, October 2021., 2021
Inspired by structures, rhythms, and functions of natural cilia, artificial cilia actuators that can respond to stimuli such as light, electric, magnetism, etc. are developed to facilitate particle/fluid manipulation, sensing, robot design, and many other fields.
Xiaoxuan Zhang   +4 more
wiley   +1 more source

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