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[Selected as a Front-Cover in Advanced Functional Materials]출


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    Bioinspired Geometry-Switchable Janus Nanofibers for Eye-Readable H₂Sensors (Adv. Funct. Mater. 29/2017)

    A highly sensitive, eye-readable hydrogen sensor based on an arthropod-sensilla-inspired H2-reactive Janus nanofiber (H-NFs) array is presented by Changhyun Pang, Taeyoon Lee, and co-workers in article number 1701618. The H-NFs exhibit reversible structural deformations with fast response time (5.1 s), when exposed to flammable concentrations of hydrogen gas. The resulting change in optical transmittance is visually apparent without further instrumentation.


    Link to journal article


    Sensors: Bioinspired Geometry-Switchable Janus Nanofibers for Eye-Readable H2 Sensors: Heetak Han, Sangyul Baik, Borui Xu, Jungmok Seo, Sanggeun Lee, Sera Shin, Jaehong Lee, Ja Hoon Koo, Yongfeng Mei, Changhyun Pang＊, Taeyoon Lee＊



    [2017, Press released - Agence France-Presse (AFP) and cover page of a number of UK Presses]

      Our article “A wet-tolerant adhesive patch inspired by protuberances in suction of octopi (Baik et al), ” was featured in a number of AFP & UK Presses.


      [AFP]-interview [AFP & Times Live]- New

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      Octopus-inspired adhesive could heal wounds (physicsworld.com) by Tim Wogan | June 14, 2017

      Solid and structural mechanics expert Nicola Pugno of the University of Trento in Italy believes that the work is significant. He points out that while the adhesiveness of a large conventional suction cup is comparable or slightly higher that the new surface, large suction cups cannot attach to very small or rough surfaces.

      He also says that producing a film embedded with microscopic conventional suction cups would be very difficult: "A suction cup seems to be simple but, as a geometry, it's quite complex: it's tapered, for example." "Perhaps the most interesting aspect is that they were able to produce in large area these microscopic, strange suction cups with the peculiar geometry of the octopus suction cups. When you understand all the physics and optimise everything, perhaps you can achieve an order of magnitude increase in adhesion strength."

      Researchers make adhesive patch that sucks like an octopus (AFP & Times Live )19 June 2017 - 10:44


      & The others.



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