Hierarchical Double-Shell Black Nanoparticles Prepared by PVP-Assisted Coating as LiDAR-Detectable Pigments for Autonomous Vehicle Applications
발표자
임지수 (인하대학교)
연구책임자
윤창민 (인하대학교)
초록
내용
In this study, hierarchical black double-shell nanoparticles (HBDS NPs) with superb near-infrared (NIR) reflectance are synthesized to improve LiDAR sensor recognition in autonomous driving systems. The HBDS NPs are fabricated through sequential processes involving titanium tetraisopropoxide (TTIP) sol-gel synthesis, sodium borohydride (NaBH4) reduction, and ammonia (NH4OH) etching. Polyvinylpyrrolidone (PVP) is employed as an interfacial agent to ensure robust adhesion between the titania shells and silica cores, creating stable double-shell architectures. And then, HBDS NPs are integrated into hydrophilic varnish and spray-coated onto various substrates. As a result, the HBDS NP-based coatings applied objects exhibit outstanding NIR reflectance (~40.6 R%) while maintaining excellent black coloration, verified by colorimeter. Importantly, practical LiDAR detection performance of objects coated with HBDS NPs are significantly enhanced, comparable to the white objects. These results suggest that HBDS NP coatings represent a viable solution for advanced, safety-focused coatings in autonomous vehicles.
- 본 연구는 2025년 정부(방위사업청)의 재원으로 국방과학연구소의 지원을 받아 수행된 미래도전국방기술 연구개발사업임(No.915066201).