Flexible tactile sensor with high sensitivity based on dual-porous dielectric layer

In this paper, the design and manufacturing of a highly sensitive capacitive-based soft pressure sensor for wearable electronic devices are presented, critical factors need to be considered including low manufacturing cost and a wide range of application scenarios. In this work, a facile approach is developed for a novel dual-porous dielectric layer is produced by incorporating the fermentation processing during sugar bulk modification. The fabricated sensors exhibit fast response and high sensitivity in the low pressure range to be able to detect weak pressure down to the weight of a mung bean. The sensor also exhibit fast response and relaxation. As a practical demonstration, the capacitive sensor is embedded into a glove for grasp motion monitoring during activities of daily living.