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Pneumatic Multi-Mode Silicone Actuator With Pressure, Vibration, and Cold Thermal Feedback
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DOI：10.1109/tmm.2026.3673479.png)
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Abstract
En 中文
A wide range of haptic feedback is crucial for achieving high realism and immersion in virtual environments. Therefore, a multi-modal haptic interface that provides various haptic signals simultaneously is highly beneficial. This paper introduces a novel silicone fingertip actuator that is pneumatically actuated, delivering a realistic and effective haptic experience by simultaneously providing pressure, vibrotactile, and cold thermal feedback. The actuator features a design with multiple air chambers, each with controllable volume achieved through pneumatic valves connected to compressed air tanks. The lower air chamber generates pressure feedback, while the upper chamber produces vibrotactile feedback. In addition, two lateral air nozzles utilize a vortex tube to generate a cold thermal sensation. To showcase the system’s capabilities, we designed two unique 3D surfaces in the virtual environment: a frozen meat surface and an abrasive icy surface. These surfaces simulate tactile perceptions of coldness, pressure, and texture. Comprehensive performance assessments and user studies were conducted to validate the actuator’s effectiveness, highlighting its diverse feedback capabilities compared to traditional actuators that offer only single feedback modalities.
Keywords:
Multi-mode haptic feedback
pneumatic
silicone actuator
thermal feedback
vortex tube
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