Paper as a Substrate for Sensor Applications: A Review

Paper-based sensor is a new alternative technology to build low cost and simple fabricated sensor applications. This paper described fabrication process technologies of paper-based sensors and their applications for force, tactile, oxygen, and humidity sensor. Paper-based sensors are much easier in fabrication and can reduce production cost, such as the clean room requirement. The piezoresistive effect is applied in force and tactile sensor by using low-cost paper substrate. Meanwhile, the paper-based substrate is used in the oxygen and humidity sensor as a new method to enhance adhesive between substrate and sensing material.