Ultrathin Hydrogel Films toward Breathable Skin‐Integrated Electronics

On-skin electronics that offer revolutionary capabilities in personalized diagnosis, therapeutics, and human-machine interfaces require seamless integration between the skin and electronics. A common question remains whether an ideal interface can be introduced to directly bridge thin-film electronics with the soft skin, allowing the skin to breathe freely and the skin-integrated electronics to function stably. Here, an ever-thinnest hydrogel is reported that is compliant to the glyphic lines and subtle minutiae on the skin without forming air gaps, produced by a facile cold-lamination method. The hydrogels exhibit high water-vapor permeability, allowing nearly unimpeded transepidermal water loss and free…

• NN
  National Natural Science Foundation of China

  Award: 52003141
• NS
  Natural Science Foundation of Guangdong Province

  Award: 2021A1515010493
• ST
  Science, Technology and Innovation Commission of Shenzhen Municipality

  Awards: RCYX20210609103710028, WDZC20200818092033001
• TS
  Tsinghua-Berkeley Shenzhen institute
• TS
  Tsinghua Shenzhen International Graduate School

  Award: QD2021006N