Abstract Maintaining human body temperature is one of the basic needs for living, which requires high‐performance thermal insulation materials to prevent heat exchange with external environment. However, most widely used fibrous always suffer from heavy weight, weak mechanical property, and moderate capacity suppress transfer, resulting in limited personal cold protection performance. Here, an ultralight, mechanically robust, thermally insulating polyimide (PI) aerogel directly synthesized...

Incorporating passive heating structures into personal thermal management technologies could effectively mitigate the escalating energy crisis. However, current materials struggle to balance thickness and insulating capability, resulting in compromised comfort, space efficiency, limited thermoregulatory performance. Here, a dual air-gelation strategy, is developed directly synthesize ultrathin self-sustainable metafabric with 3D dual-network structure during electrospinning. Controlling...

Abstract Maintaining human body temperature under low is crucial to well‐being, thereby urgently requiring for high‐performance warmth retention materials. However, designing such materials with both mechanical robustness and warming up the complex changing outdoor environments remains challenging. Here, a dual‐network structured aerogel micro‐nanofiber/MXene sponge directly synthesized by synchronous occurrence of electrospinning electrospraying. Tailoring phase inversion solution jet...

A low temperature environment poses significant challenges to the global economy and public health. However, existing cold-protective materials still struggle with trade-off between thickness thermal resistance, resulting in poor thermal-wet comfort limited personal cold protection performance. Here, a scalable strategy, based on electrospinning solution casting, is developed create aerogel micro/nanofiber membranes hierarchical cellular architecture by manipulating phase separation of...

Despite advances in motor control of current upper limb prosthetic devices, many users still experience poor prosthesis embodiment due to a lack sensory feedback. Previous studies have focused on novel tactile sensor development, neuron-like (neuromorphic) encoding, and stimulation develop sensorized prosthetics. However, the real-time dynamics information feedback not yet been addressed. In this work, we developed neuromorphic closed-loop system that integrates sensing transcutaneous...

In order to improve the light extraction for deep ultraviolet emitting diodes (DUV-LEDs), surface microstructure based on a parabola cone array is used and optimized in work. optimization of structure, inverse design particle swarm intelligent algorithm applied maximize extraction. The results show that compared with traditional planar structure improves efficiency by more than 200%. addition, influence designed propagation also explored comparing field distribution process DUV-LEDs. It...

To realize an effective and universal walking assist robot, we developed a weight-supporting wearable Human-Machine system, namely exoskeleton. Based on human hinge model kinesiology analysis, designed novel mechanical structure with bodyweight supporting. Then, the sensor actuator units were optimized. Finally, proposed control method based foot plantar pressure crotch contact force. The prototype experiment results indicated it could relieve user's knee ankle pressure, thus assisting...

<title>Abstract</title> Incorporating passive heating structures into personal thermal management technologies could effectively mitigate the escalating energy crisis. However, current materials struggle to balance thickness and insulating capability, resulting in compromised comfort, space efficiency, limited thermoregulatory performance. Here, a novel air-gelation strategy, is developed directly synthesize ultrathin self-sustainable metafabric with 3D dual-aerogel structural network during...

The AlGaN-based ultraviolet-C light emitting diodes (UVC LEDs) exhibit low extraction efficiency (LEE), and patterning substrate surfaces is considered an effective solution. In this work, a simplified model based on the process of typical flip-chip UVC LEDs proposed, which accelerates simulations illustrates transmission patterned substrates more clearly. It found that, different from case in InGaN-based visible LEDs, patterns enhance LEE by modulating transmittance. effects sub-micron are...

A novel method of utilizing an intelligent algorithm to guide the light extraction surface structure designing process for deep-ultraviolet emitting diodes (DUV-LEDs) is proposed and investigated. Two kinds structures based on truncated pyramid array (TPA) cone (TCA) are applied, which expected suppress total internal reflection (TIR) effect increase efficiency (LEE). By addressing particle swarm optimization (PSO), TPA TCA microstructures constructed sapphire layer flip-chip DUV-LEDs...

We report the realization of a dislocation prevention and thermal transport network by adopting carbon nanotube (CNT) films on commercially available patterned sapphire substrate (PSS), using which high-quality gallium nitride (GaN) epilayer device with improved performance are achieved at same time. High fill factor CNT easy accessibility lifted above patterns introduce second selective area growth subsequent to micron-scale PSS, leading further reduction in threading density (TDD) without...

PURPOSE: Exoskeletons have been developed as promising devices for restoration of function patients with motor extremity impairment. Despite recent significant advancements in rehabilitation robotic technology, there remains a critical need functional and reliable interface between user device. Directly interfacing the peripheral nervous system has potential to decode intention, however, current nerve interfaces that utilize penetrating, intrafascicular, or extraneural cuff electrodes...