Journal
JOURNAL OF MATERIALS CHEMISTRY B
Volume 5, Issue 22, Pages 4019-4024Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7tb00787f
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Funding
- National Research Foundation [NRF-NRFF2011-01, NRF-CRP10-2012-07]
- National Research Foundation of Korea [KNRF/2-1605-0017]
- A* STAR-NHG-NTU Skin Research Grant [SRG/14028]
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The structural features of biological organisms have evolved through natural selection to provide highly tailored functions, inspiring numerous biomimetic and biological design strategies. A wide scope of untapped potential lies in harnessing the nanoscale architectural properties of natural biological materials to develop high-performance sensors. Herein, we report the development of an ultrasensitive chemical sensor that is based on the threedimensional (3D) biomimetic templating of a structurally hierarchical butterflywing. In conjunction with graphene sheet coating strategies, the porous 3D architecture enables highly selective detection of diabetes-related volatile organic compounds (VOCs), including a rapid response time (<= 1 s), a low limit of detection (20 ppb), and superior mechanical properties. Taken together, the findings in this work demonstrate the promise of incorporating natural biological materials into high-performance sensors, with excellent potential for wearable and flexible sensors.
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