Fabric composites inspired by the structure of polar bear hair for collecting solar thermal energy

Moth‐Eye‐Inspired Gradient Impedance Microwave Absorption Materials with Multiband Compatible Stealth Characteristic

“…[31] In order to maintain bodies warm, polar bear was covered hollow and crimped hairs on their thick fat fur to effectively absorb and reflect infrared radiation. [32] Among many biological models, moth eye structures have been widely used as antireflective materials due to their excellent structural antireflective properties to visible light at sub-wavelength scale. [33,34] Moreover, the design of structure and size enables its unique synaptic structure to be applied to microwave absorption.…”

Transparent and Bendable Silica Aerogels Integrated with CsxWO3 Films for Photothermal Temperature Self-Regulating Systems

“…As is well-known, the polar bear is a typical animal that survives in cold regions and can tolerate extreme temperatures of −80 °C, which is attributed to its skin structure with multiple warming mechanisms (Figure S1, Supporting Information). 16 The polar bear's hair has a low thermal conductivity (0.02785−0.04886 W/(m•K)) that prevents heat loss 17 and allows most of the sunlight to pass through, 18 the dark skin can absorb sunlight and convert it into heat, and the polar bear has a 10 cm layer of fat that can play a role in temperature regulation. 19 This particular skin structure, with its multiple thermoregulatory mechanisms, ensures that polar bears can live in the harsh Arctic.…”