Epidermal radio frequency electronics for wireless power transfer

Xian Huang, Yuhao Liu, Gil Woo Kong, Jung Hun Seo, Yinji Ma, Kyung In Jang, Jonathan A. Fan, Shimin Mao, Qiwen Chen, Daizhen Li, Hank Liu, Chuxuan Wang, Dwipayan Patnaik, Limei Tian, Giovanni A. Salvatore, Xue Feng, Zhenqiang Ma, Yonggang Huang, John A Rogers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


Epidermal electronic systems feature physical properties that approximate those of the skin, to enable intimate, long-lived skin interfaces for physiological measurements, human–machine interfaces and other applications that cannot be addressed by wearable hardware that is commercially available today. A primary challenge is power supply; the physical bulk, large mass and high mechanical modulus associated with conventional battery technologies can hinder efforts to achieve epidermal characteristics, and near-field power transfer schemes offer only a limited operating distance. Here we introduce an epidermal, far-field radio frequency (RF) power harvester built using a modularized collection of ultrathin antennas, rectifiers and voltage doublers. These components, separately fabricated and tested, can be integrated together via methods involving soft contact lamination. Systematic studies of the individual components and the overall performance in various dielectric environments highlight the key operational features of these systems and strategies for their optimization. The results suggest robust capabilities for battery-free RF power, with relevance to many emerging epidermal technologies.

Original languageEnglish (US)
Article number16052
JournalMicrosystems and Nanoengineering
StatePublished - Jan 1 2016


  • Antenna design
  • Epidermal electronics
  • Modularization
  • Silicon nanomembrane
  • Soft-contact lamination
  • Specific absorption rate
  • Wireless power

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science (miscellaneous)
  • Condensed Matter Physics
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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