Self-powered eye motion sensor based on triboelectric interaction and near-field electrostatic induction for wearable assistive technologies

Progress inTENGtechnology—A journey from energy harvesting to nanoenergy and nanosystem

“…Beyond the single-functional self-powered physical sensor, TENG technology can also be applied as multifunctional sensors. 58,130,[150][151][152][153][154] As shown in Figure 3E, a 3D symmetric TENG-based gyroscope ball with dual capability of energy harvesting and self-powered sensing was reported for healthcare biomechanical parameters monitoring about the motion, acceleration, and rotation. 58 The TENG-based gyroscope ball can reach up to a sensitivity of 6.08, 5.87, and 3.62 V/g, which demonstrates good performance in hand motion recognition and human activity.…”

“…223 For assisting those disabled or elderly, some special methods of operation are crucial. 154 Pu et al has presented the glasses mounted TENG made by natural latex membrane, FEP, and ITO electrode ( Figure 7G). The proposed device could detect the eye blink induced deformation and programmed the blinking pattern into the control command, to assist the disabled patient to operate the appliance.…”

Wearable triboelectric sensors for biomedical monitoring and human-machine interface

“…The preliminary works reviewed in part 2.1 (pulse, cardiac and micro-motion monitoring based on TSs) indicate an advantage of TS in mechanosensational HMIs because micro motions even like pulses can be detected by it. The following are two examples of eye-movement-based mechanosensational HMIs: an elastic circular-film-based TS glasses driven by eye-blink for communication ( Pu et al., 2017 ); a near-field transmission-tech-introduced eye movement detection system ( Vera Anaya et al., 2020 ).…”

Applying Nanomaterials to Modern Biomedical Electrochemical Detection of Metabolites, Electrolytes, and Pathogens

“…The principle of this limited amount of antibody assay was based on the indirect competition between the immobilized MERS-CoV protein and the pathogenic analyte available in the patient's fluid (unknown virus amount). The binding of the antibody deposited on the electrode surface, insulating the electrode surface, caused the decrease of the electrochemical current of the electrode in Fe(CN) 6 3−/4− solution.…”

“…Limitations to accessing health services, particularly under difficult circumstances, such as a pandemic, may also accelerate the development in easy-to-use and out-of-clinic biosensors [4]. Several wearable sensors that give exciting opportunities to monitor personal physiological parameters, such as body movement [5], eye movement [6], blood pressure [7,8], heart rate [9,10], body temperature [11,12], and respiratory rate [13,14], have been developed. However, another important group of sensors providing complementary data of significant chemical and biochemical markers is attracting attention [15,16].…”