Imperceptible electrooculography graphene sensor system for human-robot interface
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- Imperceptible electrooculography graphene sensor system for human-robot interface
- Ameri, Shideh Kabiri; Kim, Myungsoo; Kuang, Irene Agnes; Perera, Withanage K.; Alshiekh, Mohammed; Jeong, Hyoyoung; Topcu, Ufuk; Akinwande, Deji; Lu, Nanshu
- Issue Date
- NATURE RESEARCH
- NPJ 2D MATERIALS AND APPLICATIONS, v.2
- Electrooculography (EOG) is a method to record the electrical potential between the cornea and the retina of human eyes. Despite many applications of EOG in both research and medical diagnosis for many decades, state-of-the-art EOG sensors are still bulky, stiff, and uncomfortable to wear. Since EOG has to be measured around the eye, a prominent area for appearance with delicate skin, mechanically and optically imperceptible EOG sensors are highly desirable. Here, we report an imperceptible EOG sensor system based on noninvasive graphene electronic tattoos (GET), which are ultrathin, ultrasoft, transparent, and breathable. The GET EOG sensors can be easily laminated around the eyes without using any adhesives and they impose no constraint on blinking or facial expressions. High-precision EOG with an angular resolution of 4 degrees of eye movement can be recorded by the GET EOG and eye movement can be accurately interpreted. Imperceptible GET EOG sensors have been successfully applied for human-robot interface (HRI). To demonstrate the functionality of GET EOG sensors for HRI, we connected GET EOG sensors to a wireless transmitter attached to the collar such that we can use eyeball movements to wirelessly control a quadcopter in real time.
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