Repositori institucional URV
| URV's Author/s: | Baulin, Vladimir |
| Author, as appears in the article.: | Ivanova E; Hasan J; Webb H; Gervinskas G; Juodkazis S; Truong V; Wu A; Lamb R; Baulin V; Watson G; Watson J; Mainwaring D; Crawford R |
| Author's mail: | vladimir.baulin@urv.cat |
| Author identifier: | 0000-0003-2086-4271 |
| Journal publication year: | 2013 |
| Publication Type: | Journal Publications |
| APA: | Ivanova E; Hasan J; Webb H; Gervinskas G; Juodkazis S; Truong V; Wu A; Lamb R; Baulin V; Watson G; Watson J; Mainwaring D; Crawford R (2013). Bactericidal activity of black silicon. Nature Communications, 4(), -. DOI: 10.1038/ncomms3838 |
| Papper original source: | Nature Communications. 4 |
| Abstract: | Black silicon is a synthetic nanomaterial that contains high aspect ratio nanoprotrusions on its surface, produced through a simple reactive-ion etching technique for use in photovoltaic applications. Surfaces with high aspect-ratio nanofeatures are also common in the natural world, for example, the wings of the dragonfly Diplacodes bipunctata. Here we show that the nanoprotrusions on the surfaces of both black silicon and D. bipunctata wings form hierarchical structures through the formation of clusters of adjacent nanoprotrusions. These structures generate a mechanical bactericidal effect, independent of chemical composition. Both surfaces are highly bactericidal against all tested Gram-negative and Gram-positive bacteria, and endospores, and exhibit estimated average killing rates of up to ∼450,000 cells min -1 cm -2. This represents the first reported physical bactericidal activity of black silicon or indeed for any hydrophilic surface. This biomimetic analogue represents an excellent prospect for the development of a new generation of mechano-responsive, antibacterial nanomaterials. © 2013 Macmillan Publishers Limited. All rights reserved. |
| Article's DOI: | 10.1038/ncomms3838 |
| Link to the original source: | https://www.nature.com/articles/ncomms3838 |
| Papper version: | info:eu-repo/semantics/publishedVersion |
| licence for use: | https://creativecommons.org/licenses/by/3.0/es/ |
| Department: | Enginyeria Química |
| Licence document URL: | https://repositori.urv.cat/ca/proteccio-de-dades/ |
| Thematic Areas: | Zootecnia / recursos pesqueiros Saúde coletiva Química Psicología Planejamento urbano e regional / demografia Physics and astronomy (miscellaneous) Physics and astronomy (all) Odontología Nutrição Multidisciplinary sciences Multidisciplinary Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências General physics and astronomy General medicine General chemistry General biochemistry,genetics and molecular biology Farmacia Engenharias iv Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência da computação Chemistry (miscellaneous) Chemistry (all) Biotecnología Biodiversidade Biochemistry, genetics and molecular biology (miscellaneous) Biochemistry, genetics and molecular biology (all) Astronomia / física Antropologia / arqueologia |
| Keywords: | Wing surfaces Turgor pressure Substrate Spore coat Platform Nanowires Laser Cells Bacillus-subtilis Adhesion |
| Entity: | Universitat Rovira i Virgili |
| Record's date: | 2024-10-12 |
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