NIR-Reflective Black Photonic Films Designed for Effective LiDAR Recognition

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

Conventional dark-tone paints absorb both visible light and near-infrared (NIR) wavelengths, posing a challenge for detection ranging (LiDAR) recognition in autonomous driving. To overcome this issue, various chemical structural coating materials have been explored to selectively reflect NIR. In study, we newly propose colloidal photonic crystals with stopband the NIR range, fabricated through spontaneous formation of crystalline arrays silica particles dispersed photocurable resin, as potential solution. The position is finely adjusted by controlling volume fraction particles, translucent films are rendered black incorporating carbon nanoparticles into interstitial regions. By optimizing concentration black, achieve balance low high LiDAR intensity. These demonstrate superior intensity compared commercial perform on par perylene black-deposited white coating, one most promising LiDAR-assistive currently available, under normal reflection conditions. Additionally, highly durable, thermally stable, nontoxic, environmentally friendly, making them candidates coatings.

Language: Английский

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Designing LiDAR‐Detectable Dark‐Tone Materials with High Near‐Infrared Reflectivity for Autonomous Driving: A Comprehensive Review

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Abstract Autonomous driving relies on the precise recognition of objects using light detection and ranging (LiDAR) technology, that operates at a specific wavelength 905 nm. Black objects, such as carbon black used in vehicle coating, tend to absorb this significantly, which limits performance LiDAR sensors. To address issue, researchers have explored creating dark‐toned materials can be detected by with high NIR reflectivity while maintaining true blackness ( L * < 20 based CIE color coordinates). These fall into two categories: organic inorganic pigments. Organic pigments synthetically adjusted achieve manipulating their functional groups, but achieving remains challenging, often requiring bilayer structure NIR‐reflective white base an upper layer Additionally, need for hydrophobic additives resistance degradation from sunlight further restricts use. In case pigments, desired LiDAR‐detectable properties obtained through careful control composition, structure, morphology, allowing single‐layer coatings appropriate design. This review highlights recent advancements developing outlines future material design strategies autonomous systems.

Language: Английский

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Size-Controlled LiDAR-Detectable Black Pigments: Comparative Study from the Nano- to the Micron-Scale

ACS Applied Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

Language: Английский

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Charge Accumulation Dynamics in Mid-Gap States of Nanocrystals with a Photoresponse Modulation

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Language: Английский

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Preparation of LiDAR-detectable Black Pigments via Recycling the Silicon Sludge Generated from the Semiconductor Manufacturing Processes

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 705, P. 135741 - 135741

Published: Nov. 10, 2024

Language: Английский

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Enhancing the thermal conductivity of epoxy molding compounds by adding SiO2-embedded carbon nanofibers for semiconductor packaging applications

Macromolecular Research, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 23, 2024

Language: Английский

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