Related Experiment Video
Updated: May 20, 2026

Air Filter Devices Including Nonwoven Meshes of Electrospun Recombinant Spider Silk Proteins
Published on: May 8, 2013
Durable asymmetric silk fabric with rapid heat conduction, spectral selectivity and sweat transfer capabilities for
Zirong Li1, Leilei Wu1, Changxu Jian1
1Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, China.
Abstract:
Silk fabric (SF) is a high-end textile frequently utilized in summer apparel. However, its ultraviolet absorption reduces the solar energy reflection, and the inherent hydrophilicity impedes effective sweat evaporation, thereby significantly compromising thermal-moisture comfort. Herein, we fabricated a multifunctional Janus SF with rapid heat dissipation, unidirectional moisture conduction and radiative cooling capabilities through a feasible two-step process. Briefly, hydrophilic Al2O3 nanoparticles were covalently anchored on the outer side (A-side) of Janus SF, whereas a hydrophobic boron nitride (BN) nanosheet-doped layer was fabricated on the inner side (B-side) via polycondensation reaction. The optimized Janus SF demonstrated exceptional solar reflectivity (93.62 %) and infrared emissivity (92.08 %), alongside enhanced thermal conductivities (1.45 W/K/m in-plane and 0.182 W/K/m through-plane). Additionally, the wettability gradient between the hydrophilic A-side and hydrophobic B-side provided a robust driving force for moisture transport, endowing Janus SF with a distinguished unidirectional transportation index of 809.43 % and a satisfactory water evaporation rate of 88.49 g/(m2·h), thereby ensuring prolonged thermal-moisture comfort. Notably, this Janus fabric displayed remarkable outdoor practical cooling effect (∼5.6 °C) compared to bare skin, accompanying with good biocompatibility and outstanding wearability. Overall, such durable, scalable and multifunctional Janus SF provides innovative inspiration for designing next-generation passive cooling fabrics.
Related Concept Videos
Thermosensation
Responses to Heat and Cold Stress
Mechanism of heat transfer
Equipments Used to Measure Body Temperature
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
Thermal Stress
Thermoregulation

