A wirelessly programmable, skin-integrated thermo-haptic stimulator system for virtual reality

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(22)

Published: May 20, 2024

Sensations of heat and touch produced by receptors in the skin are essential importance for perceptions physical environment, with a particularly powerful role interpersonal interactions. Advances technologies replicating these sensations programmable manner have potential not only to enhance virtual/augmented reality environments but they also hold promise medical applications individuals amputations or impaired sensory function. Engineering challenges achieving interfaces precise spatial resolution, power-efficient operation, wide dynamic range, fast temporal responses both thermal modulation, forms that can extend over large regions body. This paper introduces wireless, skin-compatible interface thermo-haptic modulation designed address some challenges, ability deliver patterns enhanced vibrational displacement high-speed stimulation. Experimental computational investigations quantify mechanical efficiency vertically stacked design layout stimulators supports real-time, closed-loop control mechanisms. The platform is effective conveying information through skin, as demonstrated robotic prosthetics interactions pressure/temperature-sensitive displays.

Language: Английский

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Towards ultrastretchability, multimodal instability, and static nonreciprocity in kirigami metamaterials

Soft Science, Journal Year: 2025, Volume and Issue: 5(2)

Published: April 14, 2025

Kirigami, known for its ultra-softness, ultra-lightness, and high stretchability, is at the forefront of research in advanced materials structural design. However, inherent flexibility sensitivity pose significant challenges mechanical characterization, as conventional rigid-body assumptions are inadequate. Key hurdles include developing flexible tensile mechanics designing high-curvature structures to prevent fracture cut edges. Despite advancements nanoscale synthesis large-scale deployable kirigami systems that enhance geometric material design, lack robust models describe complex in-plane out-of-plane buckling under extreme conditions hampers further theoretical applied progress. Current reciprocal theories struggle capture nonlinearities, multi-stability, asymmetry characteristic deformation. Static nonreciprocity offers a promising alternative by distinguishing forward reverse responses, breaking time-reversal symmetry, providing deeper insights. Moving forward, establishing framework based on nonreciprocal properties will be essential overcoming existing challenges, driving breakthroughs mechanics, enabling innovative applications areas such soft robotics, systems, electronics.

Language: Английский

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Flexible electronics for cardiovascular monitoring on complex physiological skins

iScience, Journal Year: 2024, Volume and Issue: 27(9), P. 110707 - 110707

Published: Aug. 12, 2024

Cardiovascular diseases (CVDs) pose a significant global health threat, responsible for considerable portion of worldwide mortality. Flexible electronics enable continuous, noninvasive, real-time, and portable monitoring, providing an ideal platform personalized healthcare. Nevertheless, challenges persist in sustaining stable adherence across diverse intricate skin environments, hindering further advancement toward clinical applications. Strategies such as structural design chemical modification can significantly enhance the environmental adaptability monitoring performance flexible electronics. This review delineates processing techniques, including modification, to mitigate signal interference from sebaceous skin, motion artifacts motion, infection risks fragile thereby enabling accurate key cardiovascular indicators complex physiological environments. Moreover, it delves into potential strategic development improvement ensure their alignment with environment requirements, facilitating transition

Language: Английский

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Ultra-lightweight carbon nanocomposites as microwave absorber with high absorbing performance derived from flour

Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 8(1)

Published: Dec. 4, 2024

Language: Английский

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