Popis: |
Poly (vinyl alcohol) hydrogels can be exhibit reversible volume and shape response to a variety of chemical and physical stimulate such as temperature, pH, molecules, and specific ions. The present study introduce a sensor based on polyvinyl alcohol, PVA, as a composed impedance and show its advantages over conventional materials. The Impedance measurements were carried out covering a frequency range from 10 Hz to 8×106 Hz. The designed and built a polyvinyl alcohol sensor can be used as a transducer for the measurement a biological variable. |