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Haptic technology has the potential to bring tactile richness to touchscreens on smartphones, tablets, and laptops, unlocking new dimensions for digital interaction and communication. Yet, despite notable advancements in visual resolution, the resolution of tactile pixels-referred to as "taxels"-lags significantly behind, limiting the immersive tactile feedback required for a truly enriched user experience. To bridge this gap, the study presents a transparent haptic interface with a 3D architecture that dynamically reconfigures high-resolution taxels through a densely integrated actuator array. Each actuator can be precisely inflated through fluid pressure to deliver tactile feedback with exceptional clarity and density, surpassing both the tactile perception and two-point discrimination thresholds of human fingertips. This haptic interface reveals transformative potential for enhancing touchscreen interactions in applications such as touch panel control, virtual exploration, and gaming, as it can be reversibly attached to various touchscreens and create nuanced topographical features that align with on-screen visuals.
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http://dx.doi.org/10.1002/advs.202511874 | DOI Listing |
Front Neurorobot
August 2025
Technology Research Institute, Arrow Technology Company, ZhuHai, China.
Brain-computer interface (BCI) integration with virtual reality (VR) has progressed from single-limb control to multi-limb coordination, yet achieving intuitive tri-manual operation remains challenging. This study presents a consumer-grade hybrid BCI-VR framework enabling simultaneous control of two biological hands and a virtual third limb through integration of Tobii eye-tracking, NeuroSky single-channel EEG, and non-haptic controllers. The system employs e-Sense attention thresholds (>80% for 300 ms) to trigger virtual hand activation combined with gaze-driven targeting within 45° visual cones.
View Article and Find Full Text PDFSmall Methods
September 2025
Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
A wireless epidermal electrotactile interface is demonstrated through integration of skin-conformal electrodes and flexible circuitry, addressing existing limitations in haptic technology caused by mechanical mismatch and system-level integration challenges. This electrotactile system achieves low stimulation thresholds (<20 V) through optimized electrode-skin modulus matching and improved electrochemical interfaces, enabling pain-free tactile sensation generation across finger pads. The millimeter-scale architecture incorporates multiplexed stimulation channels that spatially map to ISO-standard Braille configurations, demonstrating 91.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
The development of high-performance wearable haptic actuators remains challenging for immersive virtual reality (VR) applications due to limitations in voltage efficiency, low-voltage operation, and tactile fidelity. This work presents conformal elastic electret actuators composed of silica and poly(dimethylsiloxane) (PDMS) nanocomposites and liquid-metal (LM) electrodes, which overcome limitations in skin-device mechanical mismatch and energy efficiency. Through parametric polarization optimization under coupled thermal-electric fields (4 MV/m, 180 °C), the actuators demonstrate low threshold voltage (38.
View Article and Find Full Text PDFAdv Sci (Weinh)
August 2025
State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, 100191, China.
Haptic technology has the potential to bring tactile richness to touchscreens on smartphones, tablets, and laptops, unlocking new dimensions for digital interaction and communication. Yet, despite notable advancements in visual resolution, the resolution of tactile pixels-referred to as "taxels"-lags significantly behind, limiting the immersive tactile feedback required for a truly enriched user experience. To bridge this gap, the study presents a transparent haptic interface with a 3D architecture that dynamically reconfigures high-resolution taxels through a densely integrated actuator array.
View Article and Find Full Text PDFJ Robot Surg
August 2025
Department of Biomedical Engineering, University of Engineering and Technology (UET) Lahore, Narowal Campus, Narowal, Pakistan.
This study aims to design and evaluate a six-degree-of-freedom (6-DOF) master-slave robotic system for remote, contact-free ENT examination, focusing on safety, efficiency, and user workload. A three-axis Cartesian stage with a three-axis spherical wrist was designed for precise, non-contact laryngoscopy. Six participants (3 experts, 3 novices) performed eight phantom and eight in-vivo trials each.
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