Abstract
This paper presents a method to fabricate high purity, single chirality CNT-based sensor systems. Ultracentrifugation is initially used to create an 85% pure (6,5) CNT sample. Electrical breakdown is then used to remove the low resistance and low gauge factor CNTs from the sensor. Overall, this increases the gauge factor of the CNT-based piezoresistive sensor from −22.7 to 34.1. This result indicates that the majority of the impurities in the sensor are removed during the fabrication process.
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