Based on the preliminary experimental results, PPy nanoribbons were fabricated on 4'' Silicon/Silicon Dioxide wafer with patterned gold electrode. The length of PPy nanoribbons were varied depending on the pattern. The thickness and width of PPy nanoribbons were fixed to 100 nm and 3 µm, respectively, with lengths of more than 1mm. Electrical transport properties of PPy nanoribbons were investigated by temperature dependent measurements. Liquid ion gated field effect studies and responses to ammonia vapor demonstrate strong potential for these devices as pH and gas sensors.