Enhancement of Bacterial Anti−Adhesion Properties on Robust PDMS Micro−Structure Using a Simple Flame Treatment Method

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dc.contributor.authorHoungkamhang, Nongluck
dc.contributor.authorChaisawat, Ploymanee
dc.contributor.authorJoksathit, Waisaree
dc.contributor.authorSamart, Sutichai
dc.contributor.authorChutipaijit, Sutee
dc.contributor.authorRadomyos, Suphichaya
dc.contributor.authorSaengdee, Pawasuth
dc.contributor.authorAtthi, Nithi
dc.date.accessioned2026-08-06T10:36:18Z
dc.date.available2026-08-06T10:36:18Z
dc.date.issued2022-02-01
dc.description.abstractBiofilm−associated infections caused by an accumulation of micro−organisms and pathogens significantly impact the environment, health risks, and the global economy. Currently, a non−biocide−releasing superhydrophobic surface is a potential solution for antibacterial purposes. This research demonstrated a well−designed robust polydimethylsiloxane (PDMS) micro−structure and a flame treatment process with improved hydrophobicity and bacterial anti−adhesion proper-ties. After the flame treatment at 700 ± 20 °C for 15 s, unique flower−petal re−entrant nano−structures were formed on pillars (PIL−F, width: 1.87 ± 0.30 μm, height: 7.76 ± 0.13 μm, aspect ratio (A.R.): 4.14) and circular rings with eight stripe supporters (C−RESS−F, width: 0.50 ± 0.04 μm, height: 3.55 ± 0.11 μm, A.R.: 7.10) PDMS micro−patterns. The water contact angle (WCA) and ethylene glycol contact angle (EGCA) of flame−treated flat−PDMS (FLT−F), PIL–F, and C–RESS−F patterns were (133.9 ± 3.8°, 128.6 ± 5.3°), (156.1 ± 1.5°, 151.5 ± 2.1°), and (146.3 ± 3.5°, 150.7 ± 1.8°), respectively. The Escherichia coli adhesion on the C−RESS−F micro−pattern with hydrophobicity and superoleophobicity was 42.6%, 31.8%, and 2.9% less than FLT−F, PIL−F, and Teflon surfaces. Therefore, the flame−treated C−RESS−F pattern is one of the promising bacterial anti−adhesion micro−structures in practical utilization for various applications.
dc.identifier.citationNanomaterials, 12(3), 2022
dc.identifier.doi10.3390/nano12030557
dc.identifier.issn20794991
dc.identifier.other2-s2.0-85123927199
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/13040
dc.sourceNanomaterials
dc.subjectAntifouling
dc.subjectBacterial anti−adhesion
dc.subjectEscherichia coli
dc.subjectFlame treatment
dc.subjectFlower petal nano−structure
dc.subjectPDMS
dc.subjectRobust micro−structure
dc.subjectSoft lithography
dc.subjectSuperhydrophobic
dc.titleEnhancement of Bacterial Anti−Adhesion Properties on Robust PDMS Micro−Structure Using a Simple Flame Treatment Method
dc.typeArticle

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