Water striders demonstrate an amazing talent which enables them to effectively "row" across water surfaces without immobilization. This ability has previously been ascribed to the wax-like chemistry of the small hairs (setae) found on the legs, and theoretically attributed to the nano/microscaled hierarchical architecture of individual seta using the Cassie-Baxter equations. Here we show experimentally the strength of the contribution of the seta surface architecture to superhydrophobicity by maintaining identical surface chemistry (thin and thick coating of the setae with polydimethylsiloxane). Atomic force microscopy-based force and adhesion measurements of single uncoated and coated seta interacting with water quantitatively demonstrate the efficiency of the topographical component of the setae for repelling water.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.actbio.2010.04.016 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Outcome of Er, Cr:YSGG laser and antioxidant pretreatments on bonding quality to caries-induced dentin.
BMC Oral Health
January 2025
Conservative Dentistry Department, Faculty of Oral and Dental Medicine, Future University, Cairo, Egypt.
Background: This study aimed to assess the influence of different pretreatment protocols and antioxidants application on the shear bond strength (SBS) of universal adhesive to sound (SoD) and caries-induced dentin (CID).
Methods: One hundred and twenty posterior teeth had their occlusal enamel removed, then the specimens were divided into two main groups according to dentin substrates; SoD and CID, three subgroups according to pretreatments protocols control (no pretreatment), NaOCl-treated, and Er, Cr:YSGG-treated and two divisions according to antioxidant application (with and without sodium ascorbate (SA) application). All-Bond Universal (ABU) universal adhesives was applied in self-etch (SE) mode then resin composite discs were built.
Genome-wide identification and functional roles relating to anthocyanin biosynthesis analysis in maize.
BMC Plant Biol
January 2025
Research Institute of Biology and Agriculture, School of Chemistry and Biological Engineering, Shunde Innovation School, Zhongzhi International Institute of Agricultural Biosciences, University of Science and Technology Beijing, Beijing, 100083, China.
Background: Anthocyanin is an important class of water-soluble pigments that are widely distributed in various tissues of plants, and it not only facilitates diverse color changes but also plays important roles in various biological processes. Maize silk, serving as an important reproductive organ and displaying a diverse range of colors, plays an indispensable role in biotic resistance through its possession of anthocyanin. However, the copy numbers, characteristics, and expression patterns of genes involved in maize anthocyanin biosynthesis are not fully understood.
View Article and Find Full Text PDFKinetics of reformation of the S state capable of progressing to the S state after the O release by photosystem II.
Photosynth Res
January 2025
Department of Chemistry, Graduate School of Science and Technology, Proteo-Science Research Center, Ehime University, Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan.
The active site for water oxidation in photosystem II (PSII) comprises a MnCaO cluster adjacent to a redox-active tyrosine residue (Tyr). During the water-splitting process, the enzyme transitions through five sequential oxidation states (S to S), with O evolution occurring during the STyr· to STyr transition. Chloride also plays a role in this mechanism.
View Article and Find Full Text PDFLiquid flows induced in a rotating drum with different fill ratios.
Sci Rep
January 2025
Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Korea.
In the present study, we experimentally investigate the liquid flow induced in a rotating drum (cylindrical tank with a short aspect ratio) aligned horizontally, focusing on the variation in the time-averaged and fluctuating flow structures with different fill ratios. For each fill ratio, controlled by varying the water height, we measure the velocity fields at different cross-sectional planes with particle image velocimetry while varying the rotational speed of the drum. Compared to the condition of a fill ratio of 1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!