Can nature-inspired surface and interface designs offer practical solutions for anti-icing?

Icing is a widespread phenomenon that adversely impacts industrial operations and daily life. Icing presents significant risks to an individual's safety and efficiency. This study reviewed ice nucleation and nature-inspired anti-icing methods, offering valuable insights into the calculation of Gibbs free energy and the critical nucleation radius. A range of anti-icing techniques is examined, encompassing thermal, mechanical, ultrasonic, microwave, superhydrophobic, and slippery liquid-infused porous surface technologies. This investigation explores anti-icing methods inspired by nature, including self-removing condensation, reducing the duration of solid-liquid interactions, directing condensate jumping, preventing ice formation through antifreeze proteins, inhibiting ice nucleation with alcohol, and employing self-lubricating surfaces. Even with the shift in surface characteristics from hydrophilic to superhydrophobic, the critical radius for nucleation was consistently measured around 3.87 nm in all cases. The approach employing superhydrophobic magnetically responsive blade arrays achieved a droplet contact time of 2.9 ms and an energy transfer efficiency of nearly 95 %, surpassing the effectiveness of traditional bouncing droplet methods. The design of texture and materials plays a vital role in improving anti-icing characteristics. The integration of nanoparticles with hybrid composites has significantly enhanced self-lubricating materials, achieving an impressive 97.8 % reduction in wear rate, while the friction coefficient values have decreased to 0.12 across a wide range of temperatures. Durable and environmentally resilient coatings, energy-independent active mechanisms, and standardized benchmarking protocols will be essential for advancing the next generation of anti-icing technologies.