Flexible Transparent Iontronic Film for Interfacial Capacitive Pressure Sensing

Baoqing Nie, Ruya Li, Jennifer Cao, James D Brandt, Tingrui Pan

Research output: Contribution to journalArticlepeer-review

249 Scopus citations


A flexible, transparent iontronic film is introduced as a thin-film capacitive sensing material for emerging wearable and health-monitoring applications. Utilizing the capacitive interface at the ionic-electronic contact, the iontronic film sensor offers a large unit-area capacitance (of 5.4 μF cm-2) and an ultrahigh sensitivity (of 3.1 nF kPa-1), which is a thousand times greater than that of traditional solid-state counterparts.

Original languageEnglish (US)
Pages (from-to)6055-6062
Number of pages8
JournalAdvanced Materials
Issue number39
StatePublished - Oct 1 2015


  • capacitive sensing
  • electrical double layers
  • interfacial capacitances
  • ionic gels
  • pressure sensors

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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