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Creators/Authors contains: "Han, Sang Sub"

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  1. ; ; ; (, ACS Applied Materials & Interfaces)
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  2. ; ; ; ; ; ; (, ACS Nano)
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  3. ; ; ; ; ; ; ; ; (, ACS Applied Materials & Interfaces)
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  4. ; ; ; ; ; ; ; ; ; ; et al (, Nano Letters)
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  5. ; ; ; ; ; ; ; ; ; ; et al (, Nano Letters)
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  6. ; ; ; ; ; ; ; ; ; ; et al (, ACS Nano)
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  7. ; ; ; ; ; ; ; ; ; (, Nanotechnology)
    Abstract Crystallographically anisotropic two-dimensional (2D) molybdenum disulfide (MoS 2 ) with vertically aligned (VA) layers is attractive for electrochemical sensing owing to its surface-enriched dangling bonds coupled with extremely large mechanical deformability. In this study, we explored VA-2D MoS 2 layers integrated on cellulose nanofibers (CNFs) for detecting various volatile organic compound gases. Sensor devices employing VA-2D MoS 2 /CNFs exhibited excellent sensitivities for the tested gases of ethanol, methanol, ammonia, and acetone; e.g. a high response rate up to 83.39% for 100 ppm ethanol, significantly outperforming previously reported sensors employing horizontally aligned 2D MoS 2 layers. Furthermore, VA-2D MoS 2 /CNFs were identified to be completely dissolvable in buffer solutions such as phosphate-buffered saline solution and baking soda buffer solution without releasing toxic chemicals. This unusual combination of high sensitivity and excellent biodegradability inherent to VA-2D MoS 2 /CNFs offers unprecedented opportunities for exploring mechanically reconfigurable sensor technologies with bio-compatible transient characteristics. 
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  8. ; ; ; ; ; ; ; ; ; ; et al (, ACS Nano)
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  9. ; ; ; ; ; ; ; ; ; (, ACS Nano)
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  10. ; ; ; ; ; ; ; ; ; ; et al (, Chemistry of Materials)
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