Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1098/rsta.2016.0110 |
Hierarchical structures of cactus spines that aid in the directional movement of dew droplets | |
Malik, F. T.1; Clement, R. M.1; Gethin, D. T.2; Kiernan, M.5; Goral, T.4; Griffiths, P.1; Beynon, D.2; Parker, A. R.3 | |
通讯作者 | Malik, F. T. |
来源期刊 | PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
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ISSN | 1364-503X |
EISSN | 1471-2962 |
出版年 | 2016 |
卷号 | 374期号:2073 |
英文摘要 | Three species of cactus whose spines act as dew harvesters were chosen for this study: Copiapoa cinerea var. haseltoniana, Mammillaria columbiana subsp. yucatanensis and Parodia mammulosa and compared with Ferocactus wislizenii whose spines do not perform as dew harvesters. Time-lapse snapshots of C. cinerea showed movement of dew droplets from spine tips to their base, even against gravity. Spines emanating from one of the areoles of C. cinerea were submerged in water laced with fluorescent nanoparticles and this particular areole with its spines and a small area of stem was removed and imaged. These images clearly showed that fluorescent water had moved into the stem of the plant. Lines of vascular bundles radiating inwards from the surface areoles (from where the spines emanate) to the core of the stem were detected usingmagnetic resonance imaging, with the exception of F. wislizenii that does not harvest dew on its spines. Spine microstructures were examined using SEM images and surface roughness measurements (R-a and R-z) taken of the spines of C. cinerea. It was found that a roughness gradient created by tapered microgrooves existed that could potentially direct surface water from a spine tip to its base. This article is part of the themed issue ’Bioinspired hierarchically structured surfaces for green science’. |
英文关键词 | water harvesters cacti dew harvesters magnetic resonance imaging fluorescent water |
类型 | Article |
语种 | 英语 |
国家 | Wales ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000391135200001 |
WOS关键词 | SURFACE-STRUCTURES ; WATER ; COLLECTION ; DESERT ; DROPS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
来源机构 | University of Oxford |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/195433 |
作者单位 | 1.Swansea Univ, Inst Life Sci, Coll Med, Swansea SA2 8PP, W Glam, Wales; 2.Swansea Univ, Coll Engn, Swansea SA2 8PP, W Glam, Wales; 3.Univ Oxford, Green Templeton Coll, 43 Woodstock Rd, Oxford OX2 6HG, England; 4.Nat Hist Museum, Imaging & Anal Ctr, Cromwell Rd, London SW7 5BD, England; 5.Cyden, Technium 2, Kings Rd, Swansea SA1 8PJ, W Glam, Wales |
推荐引用方式 GB/T 7714 | Malik, F. T.,Clement, R. M.,Gethin, D. T.,et al. Hierarchical structures of cactus spines that aid in the directional movement of dew droplets[J]. University of Oxford,2016,374(2073). |
APA | Malik, F. T..,Clement, R. M..,Gethin, D. T..,Kiernan, M..,Goral, T..,...&Parker, A. R..(2016).Hierarchical structures of cactus spines that aid in the directional movement of dew droplets.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,374(2073). |
MLA | Malik, F. T.,et al."Hierarchical structures of cactus spines that aid in the directional movement of dew droplets".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 374.2073(2016). |
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