The loss of an upper limb leads to severe psychological and physical impairment. Neuroprosthetic hands with sensory feedback have restorative potential. Recreating the sensing ability of human skin using flexible sensors, a critical component of sensory feedback, has been demonstrated to improve functionality and users' satisfaction with prosthetic hands. The skin is a powerful and sophisticated organ for perception in the environment. People can feel and perceive the real world due to many nonuniform receptors (mechano, thermal, pain) embedded in the human skin. In recent years, new materials and fabrication strategies have been developed to make the artificial skin close to or even beyond the sensing ability of human skin, which could have profound implications for prosthetics. Here, we review the sensing mechanism of the human skin and the design methods of flexible sensors for mimicking the corresponding ability, covering the sense of force, thermal, and pain. We further discuss the future opportunities and challenges of high-performance flexible neuroprosthetic sensors.

Wearable biosensors have gained substantial attention in healthcare for their ability to provide real-time, non-invasive, and continuous monitoring of physiological biomarkers. However, challenges such as low selectivity, limited stability, and integration complexity in biofluid environments hinder their broader application. Molecularly imprinted polymers (MIPs), with their synthetic and biomimetic recognition capabilities, offer a promising strategy to address these limitations. MIPs serve the functionality by forming highly specific recognition sites that match the size, shape, and chemical properties of target analytes, enabling selective detection even in complex matrices like sweat or interstitial fluid. This review comprehensively overviews recent advances in wearable molecularly imprinted polymer (MIP)-based biosensors. We first introduce the fundamental principles and signal transduction mechanisms of MIP sensors, followed by an in-depth discussion of design and fabrication strategies tailored for flexible platforms. Finally, the applications of wearable MIP sensors are summarized across three major domains, including stress hormone monitoring, metabolic biomarker tracking, and therapeutic drug detection. We also conclude with an outlook on current challenges and highlight future directions for realizing next-generation wearable diagnostics based on MIP technology.

Wireless charging delivers power wirelessly across an air gap to recharge electronic devices without requiring direct physical connections. The rapid advancements in wireless charging technologies and the emergence of commercial products have introduced an alternative to overcome the energy limitations of traditional portable, battery-operated devices. This paper offers an in-depth review of radio frequency (RF)-based wireless charging, emphasizing its applications in flexible electronics. We begin with a comprehensive overview of wireless charging methods, followed by a detailed introduction to RF-based charging principles. We then review the applications of RF-based charging in wearable devices, biomedical systems, integrated flexible and stretchable electronics, and on-body wireless data transmission. Wireless charging, RF, flexible electronic, wearable devices.

Degradable organic neuromorphic transistors, emerging as a promising platform for sustainable electronics, address the evolving demands of future artificial intelligence technologies. By synergizing the computational efficiency of neuromorphic architectures with eco-friendly attributes, these devices offer a dual advantage in computational performance and environmental sustainability. Current research on such transistors, while primarily at the laboratory scale, opens new avenues at the intersection of sustainable materials and neuromorphic computing. This review highlights recent advances in electronically controlled and optoelectronically co-reconfigurable organic neuromorphic transistors in degradable electronics. Furthermore, leveraging established expertise in organic electronics, we critically examine key challenges, including material selection and device engineering in this nascent field.

Thermally activated delayed fluorescence (TADF) materials have garnered extensive attention, as they can attain 100% exciton utilization without the necessity of introducing precious metal atoms. Since the breakthrough of electroluminescent devices based on pure organic TADF materials, this field has experienced rapid development with the design and synthesis of thousands of new TADF molecules in the past decade. Among them, TADF materials with multi-channel charge transfer (MCCT) have become a research hotspot in recent years because of advantages such as the increased utilization rate of triplet excitons by opening more reverse intersystem crossing channels through degenerate molecular orbitals and the capability of obtaining emitted light with different wavelengths and spectral shapes by regulating the charge transfer processes of different channels. In this review, we have meticulously summarized the latest research accomplishments of TADF materials with MCCT reported in recent years by commencing from molecular design, photophysical properties and the performance of organic light-emitting diodes (OLEDs). The objective is to clarify the relationship between structure and performance and to offer references for follow-up work. Ultimately, the existing challenges of MCCT-based TADF materials are presented and the prospects for their future development directions are also delineated.

Flexible organic crystals (FOCs) represent an innovative category of organic crystalline materials distinguished by their remarkable ability to undergo elastic deformation or bending when subjected to external forces, all while maintaining the integrity of their crystalline order. This challenges the conventional perception that organic crystals are inherently brittle and fragile. The studies indicate that FOCs can maintain their functional characteristics during the mechanical processes, underscoring their remarkable adaptability and their promising potential for innovative applications in diverse fields, including electronics, optics, and materials science. Besides, FOCs can be designed to respond to various stimuli including light, heat, or mechanical stress, enhancing their versatility in smart materials and actuator applications. This adaptability spans a wide range of uses, from micro-scale devices to larger and more complex systems. Although rapid advancement has been achieved in the field, there is still a need for a comprehensive understanding of the material design and development routes for FOCs. This perspective provides a concise yet comprehensive summary of the current understanding of FOCs. It explores the origins of their flexibility and the mechanisms underlying deformations, such as elastic bending. Additionally, it illustrates typical examples of FOCs, with a particular emphasis on the optoelectronic changes that occur in deformed crystals, which can aid in the development of FOCs and broaden their practical applications effectively.

An octopus possesses the capabilities of superior adaptability with complex environment, dexterous movements, sensitive perception, and distributed neural control, due to the entirely soft body and numerous ganglia in both its brain and tentacles, therefore regarded as an example of embodied intelligence. Here, we present a fully stretchable sensory soft robotic tentacle with suction and grasping abilities. The tentacle is equipped with carbon nanotube-based suction cup units, and each unit is integrated with triboelectric and strain sensors. Additionally, by employing multi-granularity scanning deep cascade forest (gcForest) algorithm, through the integration and training of multimodal data, the average recognition rate can achieve 100% for distinguishing different types of fruits, and 98.40% for differentiating objects with varying shapes and/or hardness. In the complex spatial reconstruction task of a checkerboard pattern composed of 9 distinct materials and 25 pattern conditions, the sensory system attains a 97.92% reconstruction accuracy with assist of the gcForest algorithm. Notably, only 40 datasets per category are required for training. Our study highlights the sensitivity and robustness of this octopus-inspired soft robotic sensory system, superior accuracy of cross-modal data, and excellence of gcForest algorithm in few-shot learning, with great promise for human-robot interaction applications.

Controlling nanoscale morphology is essential for boosting organic solar cells (OSCs) performance, especially as highly conjugated fused-ring small molecule acceptors tend to aggregate excessively due to strong π–π interactions. Here, we present a straightforward morphology tuning approach by leveraging electrostatic interactions between the solvent and the non-fullerene acceptor BTP-eC9. By replacing chlorobenzene with bromobenzene, characterized by a higher boiling point and a more negative electrostatic potential, the solvent–acceptor interactions are strengthened and the film formation process is delayed. This modification extends the film formation time window, effectively suppresses excessive acceptor crystallization, and promotes favorable phase separation with appropriate domain size, thereby reducing recombination losses and improving carrier extraction. Consequently, PM6: BTP-eC9-based devices achieve a power conversion efficiency of 18.5%, with a short-circuit current density of 28.2 mA cm⁻² and a fill factor of 76.7%. Our results reveal the critical role of solvent electrostatics in shaping active layer morphology and demonstrate a scalable, additive-free strategy for enhancing OSC performance.

Flexible wireless charging energy storage devices enable simultaneous energy harvesting and storage in a fully untethered manner, offering promising solutions for next-generation wearable electronics. Herein, we develop a conformal and shape-adaptive all-MXene-printed flexible wireless charging supercapacitor on an ultra-thin polyethylene (PE) substrate. The device seamlessly integrates wireless charging coils (WCCs) and micro-supercapacitors (MSCs) via high-precision direct ink writing, enabling dynamic deformation and intimate contact with arbitrarily curved surfaces without compromising electrical performance. The unique circuit architecture achieves a wireless power transfer efficiency of 57.1%. The MSCs deliver an areal capacitance of 66.18 mF cm⁻² at 0.1 mA cm⁻² and a high energy density of 29.7 μWh cm⁻² at a power density of 70 μW cm⁻². After only 6 min of wireless charging, the integrated device outputs 1.51 mW of power-sufficient to illuminate an LED. The conformal shape-adaptive design not only enhances mechanical adaptability and user comfort in wearable systems but also ensures reliable energy storage under real-world deformation scenarios. This work provides a versatile platform for the design of multifunctional, seamlessly integrated, and self-powered energy modules tailored for future wearable electronics.

Simultaneously achieving high efficiency, high color purity, and low efficiency roll-off remains a critical challenge in deep-blue organic light-emitting diodes (OLEDs). Herein, we strategically synthesize two novel rigid tetradentate Pt(II) emitters incorporated with a new polycyclic aromatic hydrocarbon molecular skeleton, 7,12-dihydro-5H-7,12-[1,2]benzenonaphtho[2,3-b]carbazole (BNCz) (PtJY1 and PtJY2). A three-dimensional triptycene group is firstly merged into the carbazole ligand, together with bulky steric substituents in the benzocarbene unit, to synergistically suppress inter- and intramolecular interactions, enhance molecular rigidity, and modulate excited-state properties. PtJY1 and PtJY2 exhibit ultra-narrow deep-blue emission in toluene at room temperature, with peaks at 461.8 and 464.2 nm and full-width at half-maximum (FWHM) values of 16.6 and 15.1 nm, respectively. High photoluminescence quantum yields (Φ_PL) of 95% and 99% are achieved in doped host films. Corresponding deep-blue OLEDs achieve maximum external quantum efficiencies (EQE_max) of 29.3% and 31.2%, with Commission Internationale de l’Éclairage (CIE)_y of 0.133 and small FWHM values of 21 and 19 nm, respectively. At 1000 cd/m², the EQEs are retained at 27.0% and 27.8%, exhibiting extremely low efficiency roll-off. Notably, the device performance of PtJY2 ranks among the best-balanced Pt(II)- and Ir(III)-based blue phosphorescent OLEDs with CIE_y < 0.15. This work provides a valuable strategy for developing highly efficient, narrow-spectrum deep-blue tetradentate Pt(II) emitters for optimal performance in OLED applications.