干旱区生态环境知识资源中心(Arid): A multi-scale model for fluid transport through a bio-inspired passive valve

Arid

DOI	10.1063/1.5126481
	A multi-scale model for fluid transport through a bio-inspired passive valve
	Gravelle, Simon 1,2; Dumais, Jacques 1
通讯作者	Gravelle, Simon
来源期刊	JOURNAL OF CHEMICAL PHYSICS
ISSN	0021-9606
EISSN	1089-7690
出版年	2020
卷号	152 期号:1
英文摘要	Tillandsia landbeckii is a rootless plant thriving in the hyper-arid Atacama Desert of Chile. These plants use unique cellulose-based microscopic structures called trichomes to collect fresh water from coastal fog. The trichomes rely on a passive mechanism to maintain an asymmetrical transport of water: they allow for the fast absorption of liquid water deposited by sporadic fog events while preventing evaporation during extended drought periods. Inspired by the trichome's design, we study fluid transport through a micrometric valve. Combining Grand Canonical Monte Carlo with Non-Equilibrium Molecular Dynamics simulations, we first analyze the adsorption and transport of a fluid through a single nanopore at different chemical potentials. We then scale up the atomic results using a lattice approach, and simulate the transport at the micrometric scale. Results obtained for a model Lennard-Jones fluid and TIP4P/2005 water were compared, allowing us to identify the key physical parameters for achieving a passive hydraulic valve. Our results show that the difference in transport properties of water vapor and liquid water within the cellulose layer is the basis for the ability of the Tillandsia trichome to function as a water valve. Finally, we predict a critical pore dimension above which the cellulose layer can form an efficient valve.
类型	Article
语种	英语
国家	Chile ; England
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000505578700020
WOS关键词	ATACAMA DESERT ; MOLECULAR-DYNAMICS ; WATER DIFFUSION ; ADSORPTION ; PERMEABILITY ; SIMULATIONS ; FRAMEWORK ; SYSTEMS ; GASES ; FLOW
WOS类目	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS研究方向	Chemistry ; Physics
EI主题词	2020-01-07
来源机构	University of London
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312397
作者单位	1.Univ Adolfo Ibanez, Fac Ingn & Ciencias, Vina Del Mar, Chile; 2.Queen Mary Univ London, Sch Engn & Mat Sci, London, England
推荐引用方式 GB/T 7714	Gravelle, Simon,Dumais, Jacques. A multi-scale model for fluid transport through a bio-inspired passive valve[J]. University of London,2020,152(1).
APA	Gravelle, Simon,&Dumais, Jacques.(2020).A multi-scale model for fluid transport through a bio-inspired passive valve.JOURNAL OF CHEMICAL PHYSICS,152(1).
MLA	Gravelle, Simon,et al."A multi-scale model for fluid transport through a bio-inspired passive valve".JOURNAL OF CHEMICAL PHYSICS 152.1(2020).