Synergistic Antibacterial Surface with Liquid Repellency and Enhanced Photothermal Bactericidal Activity.
Li-Hui ZhangJia-Lei YangYun-Yun SongYan LiuZhong-Qiang ZhangPublished in: Langmuir : the ACS journal of surfaces and colloids (2023)
The presence of microorganisms on biomedical devices and food packaging surfaces poses an important threat to human health. Superhydrophobic surfaces, a powerful tool to combat pathogenic bacterial adhesion, are threatened by their poor robustness. As a supplement, photothermal bactericidal surfaces may be expected to kill adhered bacteria. Using copper mesh as a mask, we prepared a superhydrophobic surface with a homogeneous conical array. The surface shows synergistic antibacterial properties, including a superhydrophobic character against bacterial adhesion and photothermal bactericidal activity. As a result of the excellent liquid repellency, the surface could highly repel the adherence of bacteria after immersing in a bacterial suspension for 10 s (95%) and 1 h (57%). Photothermal graphene can easily eliminate most adhered bacteria during the subsequent treatment of near-infrared (NIR) radiation. After a self-cleaning wash, the deactivated bacteria were easily rinsed off the surface. Furthermore, this antibacterial surface exhibited an approximately 99.9% resisted bacterial adhesion rate regardless of planar and various uneven surfaces. The results offer promising advancement of an antibacterial surface combining both adhesion resistance and photothermal bactericidal activity in fighting microbial infections.
Keyphrases
- photodynamic therapy
- cancer therapy
- biofilm formation
- human health
- drug delivery
- drug release
- risk assessment
- candida albicans
- silver nanoparticles
- climate change
- cell migration
- microbial community
- insulin resistance
- ionic liquid
- obstructive sleep apnea
- escherichia coli
- radiation therapy
- type diabetes
- weight loss
- high throughput
- staphylococcus aureus
- high resolution
- anti inflammatory
- skeletal muscle
- sleep apnea
- mass spectrometry
- fluorescence imaging
- cystic fibrosis
- cell adhesion