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

Abstract Facile charge transfer between source/drain (S/D) electrodes and organic semiconductor (OSC) channel is crucial for high‐mobility organic field‐effect transistors (OFETs). Herein, a novel OFET geometry is developed by modifying a top‐contact bottom‐gate device structure, termed a buried‐contact OFET, enabling close proximity between the S/D‐OSC interface and conducting channel, consequently decreasing the access contact resistance ( R C,acc ) and overall contact resistance (R C ). Conventional post‐thermal annealing is combined with a burying pressure (pressure‐thermal annealing (PTA)). The synergistic effect of thermal and pressure annealings leads to the softened OSC layer enabling metal electrodes to bury inward by applied pressure. This process induces structural transitions from a top‐contact to buried‐contact configuration, as verified by atomic force microscopy and finite element simulations. Transfer line method and 4‐probe measurements revealed that PTA reduces the contact by 1/3 (65 kΩ cm) and the source‐to‐drain voltage waste due to charge injection from 52% to 31%. Consequently, the field‐effect mobility is four times higher than that of a conventional thermally annealed top‐contact OFET. The density of deep traps ( N tr ) is mainly distributed in the OSC bulk responsible for charge injection. Remarkably, the N tr decreased 30‐fold using PTA, resulting in a shallow sub‐threshold region and a threshold voltage close to zero.

LiDAR-Detectable Dark-Tone Materials In article number 2414876, Jungchul Noh, Chang-Min Yoon, and co-workers comprehensively review LiDAR-detectable dark-tone organic and inorganic materials, providing useful insights for future autonomous vehicle technology. Advancements in developing LiDAR-detectable organic and inorganic pigments with high NIR reflectivity and sophisticated coating systems have enabled autonomous driving, addressing the challenge of NIR reflection in traditional light-absorbing black coatings.

Fiber sensors with an engineered architecture offer a compelling platform for next-generation wearable electronics, owing to their inherent mechanical adaptability and compatibility with textile integration. In this study, a multimodal fiber sensor with a one-dimensional double-helix architecture is introduced, enabling the distinct detection of pressure and strain stimuli within a single device. Strain sensing is realized via piezoresistive changes in a helical conductive fiber, while pressure is detected through piezocapacitive responses between two twisted fiber electrodes separated by a dielectric layer. This structural configuration ensures effective decoupling of signals, yielding a reliable dual-mode operation without cross-interference. The strain-sensing component demonstrates a gauge factor of 0.03 ± 0.001%^-1, high linearity (0.996-0.999), negligible hysteresis, rapid response (∼300 ms) and recovery (∼350 ms) times over a broad strain range (0-300%), and stable performance over 2500 cycles. The pressure sensor exhibits a gauge factor of 0.001 ± 2 × 10^-5 kPa^-1, excellent linearity (0.992), fast response (∼150 ms), and mechanical durability of over 2500 cycles. Practical demonstrations─including joint motion, respiration, tactile force, and airflow detection─validate the sensor's multimodal functionality. By integrating high fidelity, minimal signal interference, and robust structural performance, the proposed double-helix fiber sensor presents a versatile and scalable solution for wearable multimodal sensing applications.

Reliable and noninvasive monitoring of glucose remains a critical challenge for wearable healthcare devices. Conventional enzymatic sensors, while selective, suffer from limited stability and short operational lifetimes, highlighting the need for robust nonenzymatic alternatives. Here, we report a nonenzymatic, noninvasive glucose biosensor fabricated through the combination of laser irradiation (LI) and electroless plating (ELP). LI of a SnO₂/polyurethane acrylate (PUA) composite selectively exposed catalytic sites, enabling uniform Cu/Ni/Au metallization via ELP. The resulting electrodes were well-formed, exhibiting low resistivity (21.94 ± 1.09 mΩ·cm) and strong mechanical stability, maintaining conductivity even after 100,000 folding cycles at a bending radius of 5 mm. Functionalization with catalytic Pt/C endowed the electrodes with high catalytic activity, yielding reliable cyclic voltammetry (CV) responses and superior glucose detection capability. Compared with a commercial electrode, the LI-ELP biosensor achieved nearly 18-fold higher sensitivity (16.3 ± 1.40 vs 0.92 ± 0.10 mA mM^-1 cm^-2) and improved linearity (0.96 vs 0.94) over the 0-0.5 mM glucose range. The superior performance is attributed to the enlarged active surface area, optimized electrode structure, and efficient catalyst utilization, which collectively reduced overpotentials and enhanced charge-transfer efficiency. Overall, these findings establish LI-ELP as an effective and scalable strategy for fabricating durable, conductive, and efficient electrodes, highlighting its strong potential for next-generation wearable biosensors and broader nonenzymatic electrochemical sensing applications.

This study investigates the impact of incorporating aluminum (Al) as a promoter into a Co/MgAl 2 O 4 (MA) catalyst for the CO 2 reforming of CH 4 with C 2 H 6 . The Co/MA catalyst exhibited the highest initial conversion of CH 4 and CO 2 ; however, both values gradually declined over the time. In contrast, all Al-promoted catalysts maintained stable conversions, and the CoAl(0.50)/MA catalyst demonstrated notable catalytic stability after 50 h of reaction. The weight of the Al-promoted catalyst either remained constant or increased slightly compared with the Al-unpromoted catalyst during CH 4 -TGA, indicating superior resistance to coking. Although the exact location of the Al species could not be determined experimentally, it can be inferred that the appropriate addition of Al to the Co/MA catalyst may partially form a CoAl 2 O 4 phase, which facilitates CO 2 activation and suppresses carbon deposition. This suggests that the Al promoter kinetically controls the rate of carbon deposition and oxidation on the Co/MA catalyst. • Al-incorporated Co/MA demonstrated good catalytic stability for CO 2 reforming of CH 4 with C 2 H 6 . • CoAl(x)/MA exhibited less and slow carbon deposition than Co/MA during CH 4 -TGA. • CoAl(x)/MA enhanced CO 2 activation, as evidenced by CO 2 -TPSR. • Al modifier effectively enhanced the coking resistance for both C 2 H 4 and C 3 H 6 .

Organic neuromorphic electronics using conjugated polymers as an active layer attract a lot of attention, for that their synaptic plasticity can be easily tuned by tailoring of the molecular chain structures. Herein, we synthesize a series of conjugated polymers based on a backbone engineering strategy, using thiophene (T), selenophene (Se), bithiophene (BT) and terthiophene (TT) as donors and diketopyrrolopyrrole (DPP) as acceptor, i.e., PTDPP-T, PTDPP-Se, PTDPP-BT and PTDPP-TT, and used these conjugated polymers to fabricate thin-film synaptic transistors. We investigated the correlation between chemical structures, aggregation states, film morphology, mobility and synaptic plasticity. When BT was used as the donor, the conjugated polymer exhibited the strongest preaggregation, formed a nanowire-structured crystal morphology, and had the appropriate monomer conjugation length, resulting in the highest field-effect mobility ∼1.33 cm² V^-1 s^-1. PTDPP-BT synaptic transistor showed the most favorable synaptic plasticity, in terms of response amplitude, plasticity regulation, and high-pass filtering, and applied to image processing and associated learning. The device was also used for wearable applications and successfully demonstrated for real-time wearable motion cognition, which provides an approach for the development of future neuromorphic devices.

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

Abstract Facile charge transfer between source/drain (S/D) electrodes and organic semiconductor (OSC) channel is crucial for high‐mobility organic field‐effect transistors (OFETs). Herein, a novel OFET geometry is developed by modifying a top‐contact bottom‐gate device structure, termed a buried‐contact OFET, enabling close proximity between the S/D‐OSC interface and conducting channel, consequently decreasing the access contact resistance ( R C,acc ) and overall contact resistance (R C ). Conventional post‐thermal annealing is combined with a burying pressure (pressure‐thermal annealing (PTA)). The synergistic effect of thermal and pressure annealings leads to the softened OSC layer enabling metal electrodes to bury inward by applied pressure. This process induces structural transitions from a top‐contact to buried‐contact configuration, as verified by atomic force microscopy and finite element simulations. Transfer line method and 4‐probe measurements revealed that PTA reduces the contact by 1/3 (65 kΩ cm) and the source‐to‐drain voltage waste due to charge injection from 52% to 31%. Consequently, the field‐effect mobility is four times higher than that of a conventional thermally annealed top‐contact OFET. The density of deep traps ( N tr ) is mainly distributed in the OSC bulk responsible for charge injection. Remarkably, the N tr decreased 30‐fold using PTA, resulting in a shallow sub‐threshold region and a threshold voltage close to zero.