Nanoengineered Superhydrophobic Surfaces of Aluminum with Extremely Low Bacterial Adhesivity

被引:189
作者
Hizal, Ferdi [1 ,2 ,3 ]
Rungraeng, Natthakan [4 ]
Lee, Junghoon [1 ]
Jun, Soojin [5 ]
Busscher, Henk J. [2 ,3 ]
van der Mei, Henny C. [2 ,3 ]
Choi, Chang-Hwan [1 ]
机构
[1] Stevens Inst Technol, Dept Mech Engn, Hoboken, NJ 07030 USA
[2] Univ Groningen, Univ Med Ctr Groningen, Antonius Deusinglaan 1, NL-9713 AV Groningen, Netherlands
[3] Univ Groningen, Univ Med Ctr Groningen, Dept Biomed Engn FB40, Antonius Deusinglaan 1, NL-9713 AV Groningen, Netherlands
[4] Mae Fah Luang Univ, Sch Agroind, Food Technol Program, 333 Mool, Muang 57100, Chiang Rai, Thailand
[5] Univ Hawaii Manoa, Dept Human Nutr Food & Anim Sci, 1955 East West Rd,Agr Sci Bldg 216, Honolulu, HI 96822 USA
基金
美国食品与农业研究所;
关键词
bacteria; adhesion; aluminum; anodizing; nanostructures; superhydrophobic; STAPHYLOCOCCUS-EPIDERMIDIS; NANOSTRUCTURES; DETACHMENT; REDUCTION; BIOFILMS; FORCE;
D O I
10.1021/acsami.7b01322
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Bacterial adhesion and biofilm formation on surfaces are troublesome in many industrial processes. Here, nanoporous and nanopillared aluminum surfaces were engineered by anodizing and postetching processes and made hydrophilic (using the inherent oxide layer) or hydrophobic (applying a Teflon coating) with the aim of discouraging bacterial adhesion. Adhesion of Staphylococcus aureus ATCC 12600 (Gram-positive, spherically shaped) and Escherichia coli K-12 (Gram-negative, rod shaped) was evaluated to the nanoengineered surfaces under both static and flow conditions (fluid shear rate of 37 s(-1)). Compared to a nonstructured electropolished flat surface, the nanostructured surfaces significantly reduced the number of adhering colony forming units (CFUs) for both species, as measured using agar plating. For the hydrophilic surfaces, this was attributed to a decreased contact area, reducing bacterial adhesion forces on nanoporous and nanopillared surfaces to 4 and 2 nN, respectively, from 8 nN on flat surfaces. Reductions in the numbers of adhering CFUs were more marked on hydrophobic surfaces under flow, amounting to more than 99.9% and 99.4% for S. aureus and E. coli on nanopillared surfaces, respectively. Scanning electron microscopy revealed 4 few bacteria found on the hydrophobic nanopillared surfaces adhered predominantly to defective or damaged areas, whereas the intact area preserving the original nanopillared morphology was virtually devoid of adhering bacteria. The greater decrease in bacterial adhesion to hydrophobic nanopillared surfaces than to hydrophilic or nanoporous ones is attributed to effective air entrapment in the three-dimensional pillar morphology, rendering them superhydrophobic and slippery, in addition to providing a minimized contact area for bacteria to adhere to.
引用
收藏
页码:12118 / 12129
页数:12
相关论文
共 47 条
  • [1] Evidence for van der Waals adhesion in gecko setae
    Autumn, K
    Sitti, M
    Liang, YCA
    Peattie, AM
    Hansen, WR
    Sponberg, S
    Kenny, TW
    Fearing, R
    Israelachvili, JN
    Full, RJ
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2002, 99 (19) : 12252 - 12256
  • [2] Retention of bacteria on a substratum surface with micro-patterned hydrophobicity
    Bos, R
    van der Mei, HC
    Gold, J
    Busscher, HJ
    [J]. FEMS MICROBIOLOGY LETTERS, 2000, 189 (02) : 311 - 315
  • [3] A review of the biomaterials technologies for infection-resistant surfaces
    Campoccia, Davide
    Montanaro, Lucio
    Arciola, Carla Renata
    [J]. BIOMATERIALS, 2013, 34 (34) : 8533 - 8554
  • [4] Polymeric N-Halamine Latex Emulsions for Use in Antimicrobial Paints
    Cao, Zhengbing
    Sun, Yuyu
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2009, 1 (02) : 494 - 504
  • [5] Wettability of porous surfaces.
    Cassie, ABD
    Baxter, S
    [J]. TRANSACTIONS OF THE FARADAY SOCIETY, 1944, 40 : 0546 - 0550
  • [6] Modulating cellular adhesion through nanotopography
    Decuzzi, Paolo
    Ferrari, Mauro
    [J]. BIOMATERIALS, 2010, 31 (01) : 173 - 179
  • [7] Liquid-infused structured surfaces with exceptional anti-biofouling performance
    Epstein, Alexander K.
    Wong, Tak-Sing
    Belisle, Rebecca A.
    Boggs, Emily Marie
    Aizenberg, Joanna
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2012, 109 (33) : 13182 - 13187
  • [8] Diameter of titanium nanotubes influences anti-bacterial efficacy
    Ercan, Batur
    Taylor, Erik
    Alpaslan, Ece
    Webster, Thomas J.
    [J]. NANOTECHNOLOGY, 2011, 22 (29)
  • [9] Nanocarpet effect: Pattern formation during the wetting of vertically aligned nanorod arrays
    Fan, JG
    Dyer, D
    Zhang, G
    Zhao, YP
    [J]. NANO LETTERS, 2004, 4 (11) : 2133 - 2138
  • [10] Staphylococcal Adhesion, Detachment and Transmission on Nanopillared Si Surfaces
    Hizal, Ferdi
    Choi, Chang-Hwan
    Busscher, Henk J.
    van der Mei, Henny C.
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (44) : 30430 - 30439