Green smart multifunctional wooden roofs enabled by single-step hydrophobic laser-induced graphene fabrication.

Global warming, contributing to the worsening climate crisis, has led to more frequent heavy snowfall and rainfall. This causes corrosion, mold, and structural damage to roofs, which shortens the roofs' lifespan and potentially creates safety hazards. Addressing these challenges, we propose an approach to develop a multifunctional roof crucial for proactive adaptation to extreme weather. In this article, we present hydrophobic laser-induced graphene (LIG) onto wood in a single-step process using femtosecond-laser-direct-writing (FsLDW) technology in ambient air without additional chemical treatment. This hydrophobic LIG, showcasing a high electrical conductivity of 10.0 Ω·sq⁻1 and a high contact angle of 148.8°, seamlessly integrates onto roofs, creating cost-effective, fast, eco-friendly, and smart roofing solutions. The hydrophobic surface of these LIG electrodes incorporates a heating function of LIG showcasing their versatility in providing waterproofing, drying wood, and facilitating de-icing functions. This eco-friendly invention, reliant solely on laser patterning on wood, not only extends roof lifespan but also relieves concerns about electronic waste and recycling, promising the integration of green, smart, and sustainable roofing solutions. We demonstrated the facile fabrication of hydrophobic laser-induced graphene (LIG) surfaces on natural wood using femtosecond laser in a single-step process, designed for multifunctional roofing applications. [Display omitted] • Hydrophobic femtosecond laser-induced graphene (LIG) was fabricated on natural wood in a single step. • High-quality hydrophobic LIG electrodes were produced on wood without requiring additional treatment. • The LIG exhibited low electrical conductivity (10.0 Ω·sq⁻1) and a high contact angle (148.8°). • Hydrophobic LIG-embedded wood demonstrated applications in waterproofing, wood moisture drying, and de-icing. • Multifunctional hydrophobic LIG was utilized for green, smart, and multifunctional roofing solutions. [ABSTRACT FROM AUTHOR]