Nano‐Newton Transverse Force Sensor Using a Vertical GaN Nanowire based on the Piezotronic Effect

Enhanced transverse force sensitivity of vertically aligned GaN nanowires is demonstrated using the piezotronic effect. The transverse force sensitivity is calculated to be 1.24 ± 0.13 ln(A)/nN, with a resolution better than 16 nN and the response time less than 5 ms. The nano-Newton force resolution shows the potential for piezoelectric semiconductor materials to be used as the main building block for micro-/nanosensor arrays or artificial skin. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.