On the 8th, Professor Bang Chang-hyun's research team at Sungkyunkwan University announced the development of a vibration haptic patch capable of delivering delicate tactile sensations ranging from rough gravel to gentle waves. They stated that by attaching the patch, users can experience tactile sensations that are hard to distinguish from reality in the three-dimensional virtual world of the metaverse. The research findings were published in the international journal 'Advanced Materials' on the 25th.
Existing wearable haptic devices had limitations in skin adherence and precise tactile transmission due to rigid or inflexible materials. In particular, they struggled to adapt to the curves or elasticity associated with various body movements and were difficult to use for long periods due to sweat and heat issues.
The research team designed an electrically active layer filled with a cushioning gel in a micro-spring structure and developed vibration elements with high elasticity by securely combining stretching electrodes. The electrically active layer consists of materials that change in shape or physical properties when electricity is applied.
The newly developed haptic patch can stretch up to 500% and can output vibrations at the level of smartphones while being securely attached to areas with a lot of movement and complex structure, such as palms or fingers. The researchers noted that its structure, inspired by frog feet, allows for natural sweat and heat dissipation, maintaining excellent performance even in high-temperature and humid environments.
Professor Bang Chang-hyun said, 'This research is an innovative example that overcomes the structural and functional limitations of existing wearable haptic technology, and it can be practically utilized in various industries and medical fields in the future.' He added, 'I expect it to become a core platform for next-generation tactile interface technology.'
References
Advanced Materials (2025), DOI: https://doi.org/10.1002/adma.202503781