Robotics 55 Intelligent control 48 Wireless sensor networks 47 Smart sensors 46 Sensors 42 Internet of things 41 Wearable sensors 41 Detectors. Sensors. Sensor networks 37 Fiber optic sensors 35 Sensor 31 Sensor nodes 31 machine learning 31 sensors 30 Energy efficiency 28 Electrodes 25 Performance 25 Electrochemical sensors 24 human 24 Costs 23 Robots 23 Sensor networks 23 Monitoring 22 Diseases 21 Energy utilization 21 Article 20 Chemical detection 20 Humans 20 Machine learning 20 Scanning electron microscopy 20 Deep learning 19