Development of durable and superhydrophobic nanodiamond coating on aluminum surfaces for improved hygiene of food contact surfaces

Foodborne illness outbreaks caused by bacterial pathogens may take place on a large scale and result in millions of hospitalizations thousands deaths every year throughout the world. One key strategy for dealing with this global issue is design smart surfaces coatings which inhibit reduce attachment. This can mitigate contamination cross-contamination during farm-to-table food processing, promoting safety, hygiene. Herein, we reported durable superhydrophobic coating aluminum fabricated sequential deposition ultrahard nanodiamond, self-assembly l-3,4-dihydroxyphenylalanine (l-dopamine), chemical modification an organoflurosilane. achieved static, advancing, receding water contact angles 159.0 ± 2.5°,154.0 2.4°; 153.7 1.7°, respectively, representing super-repellency low overall root mean square (rms) roughness 173.5 69.6 nm. In comparison to bare, unmodified aluminum, coated prevented attachment 99.5% applied Escherichia coli O157:H7 (E.coli O157:H7) 99.0% Staphylococcus aureus (S. aureus) cells. addition, due presence nanodiamond building blocks, demonstrated high mechanical resistance against scratching endured at least 10,000 shearing/rubbing cycles nylon surface. Overall, anticipate that implementation could improve safety hygiene food-contact require harsher operational conditions.