Switchable wettability applicable to nonplanar surfaces
Source abstract
Abstract
Abstract We present a temperature-responsive hydrophilic–hydrophobic switchable coating (S3C) applicable to nonplanar surfaces and based on a temperature-responsive polymer with embedded sprayed microparticles. The S3C was hydrophilic at lower temperature, with contact angle (CA) of ≈6.7° and hydrophobic with CA of ≈138.7° at higher temperature, with a transition temperature of ≈34.4 °C. We investigated the influence of a streamline-shaped object coated with S3C on the hydrodynamic drag force (FD). An experiment showed an unprecedented modulation value of ≈79%; that is, the FD changes from (0.79 ± 0.04) mN at a temperature of ≈20 °C to (0.17 ± 0.13) mN at 50 °C. This type of coating could be employed for various devices such as underwater vehicles to modulate FD based on the desired tasks, either to lower it or to increase it for saving energy or deceleration.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Advanced Sensor and Energy Harvesting Materials · Micro and Nano Robotics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
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