Lim, Taeho Bae, Seong Hee Yu, Sung Ho Baek, Kyung-Youl Cho, Sangho 2024-01-19T12:02:52Z 2024-01-19T12:02:52Z 2022-05-12 2022-05 1598-5032 https://pubs.kist.re.kr/handle/201004/115229 Light Detection and Ranging (LiDAR) is a representative sensor for autonomous vehicles (AVs) by recognizing surrounding objects through detecting the reflected near-infrared (NIR) light However, this sensor has a weakness in recognizing the conventional carbon black-based dark-tone cars due to their low NIR reflectance. This cognitive impairment is a potential factor in a car accident in the AV system. Therefore, it is necessary to develop a dark-tone paint that can be applied to LiDAR by reflecting NIR In this work, we developed a NIR reflective dark-tone bilayer system. As the bottom layer (surfacer layer), we used a conventional NIR-reflective surfacer. For the dark-tone top layer (basecoat layer), organic pigment-based paints were prepared. Various combinations of organic pigments such as perylene, copper(II) phthalocyanine, perylene diimide derivatives were studied to give a dark tone. After optimization, the developed bilayers exhibited dark tone with low L* values (less than 25) and high reflectance in the NIR region, over 60%, especially at 905 nm. Therefore, we expect the developed bilayer system to be applied as a dark-tone paint detectable by LiDAR. English 한국고분자학회 Near-Infrared Reflective Dark-Tone Bilayer System for LiDAR-Based Autonomous Vehicles Article 10.1007/s13233-022-0037-5 1 Macromolecular Research, v.30, no.5, pp.342 - 347 Macromolecular Research 30 5 342 347 N scie scopus kci ART002841161 000789821800002 Polymer Science Polymer Science Article; Early Access PERYLENE TOXICITY LiDAR paint organic pigments perylenediimide perylene copper(II) phthalocyanine