After the careful growth of special vertical well aligned ZnO nanowires, mechanical properties are being investigated using different techniques, among which nano-indentation has been used the most frequently.
Critical force that a single nano-wire can withstand is carefully investigated to understand the mechanical applied force limits of our nano-wires before using it as piezoelectric components.
This is then followed by the design of the electro-mechanical device based on these nano-wires. Indeed this is another challenging task. Our aim is develop a nano-generator which provides an efficiency of at least 30%.
Utilizing these piezoelectric harvesters, we aim to develop self-powered systems (for different applications) relying on ambient low frequency mechanical energy available around us.
Photo with gloves above: The nano sensor is very thin and flexible.
Three illustrations below:
(1) The configuration of anisotropic self-powered directions sensor,
(2) a spontaneous response of both sides of the harvester, and
(3) the response of both sides for longer duration.