Smart materials Smart structures 59 Technological innovations 23 Materials 19 Textile fabrics 15 Polymers 11 Biosensors 10 Detectors 8 Nanotechnology 8 Piezoelectric devices 8 Structural control (Engineering) 8 Microactuators 7 Shape memory alloys 7 Building materials 6 Buildings 6 Materials science 6 Microelectromechanical systems 6 Nanostructured materials 6 Adaptive control systems 5 Composite materials 5 Design and construction 5 Electronic apparatus and appliances 5 Molecular electronics 5 Optical transducers 5 Aerospace engineering 4 Automatic data collection systems 4 Biochemical engineering 4 Biomolecules 4 Protective clothing 4 Sensor networks 4