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Bhadra CM, Werner M, Baulin VA, Truong VK, Kobaisi MA, Nguyen SH, Balcytis A, Juodkazis S, Wang JY, Mainwaring DE, Crawford RJ, Ivanova EP. Subtle Variations in Surface Properties of Black Silicon Surfaces Influence the Degree of Bactericidal Efficiency. NANO-MICRO LETTERS 2018; 10:36. [PMID: 30393685 PMCID: PMC6199077 DOI: 10.1007/s40820-017-0186-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/21/2017] [Indexed: 05/10/2023]
Abstract
One of the major challenges faced by the biomedical industry is the development of robust synthetic surfaces that can resist bacterial colonization. Much inspiration has been drawn recently from naturally occurring mechano-bactericidal surfaces such as the wings of cicada (Psaltoda claripennis) and dragonfly (Diplacodes bipunctata) species in fabricating their synthetic analogs. However, the bactericidal activity of nanostructured surfaces is observed in a particular range of parameters reflecting the geometry of nanostructures and surface wettability. Here, several of the nanometer-scale characteristics of black silicon (bSi) surfaces including the density and height of the nanopillars that have the potential to influence the bactericidal efficiency of these nanostructured surfaces have been investigated. The results provide important evidence that minor variations in the nanoarchitecture of substrata can substantially alter their performance as bactericidal surfaces.
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Affiliation(s)
- Chris M Bhadra
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Marco Werner
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Avinguda dels Països Catalans 26, 43007, Tarragona, Spain
| | - Vladimir A Baulin
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Avinguda dels Països Catalans 26, 43007, Tarragona, Spain
| | - Vi Khanh Truong
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Mohammad Al Kobaisi
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Song Ha Nguyen
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - Armandas Balcytis
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
- Melbourne Center for Nanofabrication, 151 Wellington Road, Clayton, VIC, 3168, Australia
| | - Saulius Juodkazis
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
- Melbourne Center for Nanofabrication, 151 Wellington Road, Clayton, VIC, 3168, Australia
| | - James Y Wang
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | - David E Mainwaring
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
| | | | - Elena P Ivanova
- School of Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122, Australia.
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