Antifouling superhydrophobic surfaces with bactericidal and SERS activity

Fouling and contamination of surfaces are prevailing challenges humanities facing today in fields such as healthcare, hospitality, food manufacturing. These strongly motivate the development multifunctional with antifouling antimicrobial properties that coupled sensing capabilities. To address this challenge, we prepared a superhydrophobic surface using eco-friendly materials: polydimethylsiloxane (PDMS) carnauba wax. After deposition thin film Ag, gained surface-enhanced Raman scattering (SERS) activity bactericidal property. The showed extreme liquid repellency towards water common food. strong SERS enabled detection adulterant rhodamine B sausage down to nanomolar level. Notably, excellent two bacteria, E. coli, S. aureus, significantly reducing their adhesion killing. Additionally, anti-fouling behavior against food, even sticky foods yogurt, honey, pomegranate sauce, residual by >97 %. Furthermore, chemical stability dynamic static flow conditions leaching Ag neutral basic solutions was minimal.