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FRANCE-SCIENCE-BIOLOGY-BEDBUGS
EMBARGOED UNTIL APRIL 9, 2013, 23:15 GMT
A handout combination of pictures released by the Royal Society on April 9, 2013 shows the fabrication process of biomimetic surfaces from bean leaves. (1–3) A negative molding material is poured onto a leaf surface, and pressure is applied. (4–6) The leaf is removed, and the negative mold is filled with the positive replica material. (7) The negative mold is removed leaving the replica. (b,c) LV-SEM (Low Vacuum Scanning Electron Microscope) images of the bean leaf show the surface density of trichomes and the recurved, sharp trichome tips. (d,e) SEM images of the replicate materials appear identical to the natural leaves. In a journal of Britain's prestigious Royal Society, US entomologists on April 9 reported progress in a quest to emulate anti-bedbug defence found in the hairs of leaves from the kidney-bean plant, known by its Latin name of Phaseolus vulgaris. In rural Bulgaria, Serbia and other parts of the Balkans, these leaves are scattered on the floor next to the bed, snagging the blood-sucking little parasites during their night-time forays. AFP PHOTO / ROYAL SOCIETY
RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / ROYAL SOCIETY" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
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Detalii fotografie |
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Paris, FRANCE |
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AFP / Mediafax Foto |
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10 Aprilie 2013 |
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2461 x 1524 (1.3 MB) |
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