PIEZORESISTIVE NANOWIRE ARRAY FOR MOTION SENSING

摘要

A device (10) for sensing motion in or of a liquid or a gas is provided, the device (10) comprising at least one array of parallel and spaced-apart piezo resistive nanowires, NWs, (12)and at least two terminal contacts (11), where at least one of the NWs is suspended between and connected to the terminal contacts (11) which are configured to be biased with an external voltage (V) so that a current (I) can flow through the NWs (12), the device being configured such that motion in or of the liquid or gas, and / or motion of particles or biological bodies in the liquid or gas causes vibrations of the NWs (12), causing corresponding fluctuations in the resistance of the NWs (12) and thereby fluctuations in the current (I) flowing through the NWs (12) when the terminal contacts (11) are biased with an external voltage (V). A corresponding method for sensing motion in or of a liquid or a gas is also provided, as well as a method for sensing motion and activity of bacteria, single cells or single-cell organisms present in a liquid or gas, together with a method for drug susceptibility testing based on the method for sensing motion and activity of bacteria, single cells or single-cell organisms.