Recent studies in emerging flexible humidity sensors have achieved great developments in advanced manufacturing methods, as well as innovative applications including human health care detection, plant health management and noncontact human-machine interfaces. Capacitive-type humidity sensors have gained much attention due to reliable humidity sensing performance, low power consumption and facile structural designs. Generally, the performance of a capacitive humidity sensor is strongly correlated with the dielectric permittivity of functional materials between sensing electrodes.
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Source: Phys.org