title: Bacterially Antiadhesive, Optically Transparent Surfaces Inspired from Rice Leaves.
abstract: Because of the growing prevalence of antimicrobial resistance strains, there is an increasing need to develop material surfaces that prevent bacterial attachment and contamination in the absence of antibiotic agents. Herein, we present bacterial antiadhesive materials inspired from rice leaves. "Rice leaf-like surfaces" (RLLS) were fabricated by a templateless, self-masking reactive-ion etching approach. Bacterial attachment on RLLS was characterized under both static and dynamic conditions using Gram-negative Escherichia coli O157:H7 and Gram-positive Staphylococcus aureus. RLLS surfaces showed exceptional bacterial antiadhesion properties with a >99.9% adhesion inhibition efficiency. Furthermore, the optical properties of RLLS were investigated using UV-vis-NIR spectrophotometry. In contrast to most other bacterial antiadhesive surfaces, RLLS demonstrated optical-grade transparency (i.e., ≥92% transmission). We anticipate that the combination of bacterial antiadhesion efficiency, optical grade transparency, and the convenient single-step method of preparation makes RLLS a very attractive candidate for the surfaces of biosensors; endoscopes; and microfluidic, bio-optical, lab-on-a-chip, and touchscreen devices.
authors.affiliation: Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843, United States.
authors.forename: Jun Kyun
authors.initials: JK
authors.lastname: Oh
authors.affiliation: Department of Polymer Engineering, The University of Akron , Akron, Ohio 44325, United States.
authors.forename: Xiaoxu
authors.initials: X
authors.lastname: Lu
authors.affiliation: Department of Polymer Engineering, The University of Akron , Akron, Ohio 44325, United States.
authors.forename: Younjin
authors.initials: Y
authors.lastname: Min
authors.affiliation: Department of Horticultural Sciences, Texas A&M University , College Station, Texas 77843, United States.
authors.forename: Luis
authors.initials: L
authors.lastname: Cisneros-Zevallos
authors.affiliation: Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843, United States.|Artie McFerrin Department of Chemical Engineering, Texas A&M University , College Station, Texas 77843, United States.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Akbulut
mesh_terms: D001422:Bacterial Adhesion; D019453:Escherichia coli O157 / Q000648:ultrastructure; D057927:Hydrophobic and Hydrophilic Interactions; D055620:Optical Phenomena; D012275:Oryza / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D011791:Quartz / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D019265:Spectroscopy, Near-Infrared; D013211:Staphylococcus aureus / Q000648:ultrastructure; D017155:Wettability
chemical_list: D011791:Quartz
keywords: bacterial fouling; bioinspiration; biosensors; endoscopes; optical transparency