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4d ago

Liquid-Metal Skin Patch Enables Continuous Blood Pressure Monitoring

Researchers are embedding wireless connectivity with AI-driven analysis to make the flexible, cuffless sensor practical for daily hypertension management.

Representational image showing a small, transparent, flexible electronic patch adhered to the skin on a fingertip. The patch contains intricate metallic circuit patterns, highlighting the concept of wearable, skin-like electronics designed for continuous health monitoring.
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Overview

  • The patch measures blood pressure by detecting time delays between electrical signals (ECG) and mechanical pulse waves at the wrist for real-time data.
  • Selective laser sintering fuses liquid-metal particles into ultrathin, skin-like circuits that stretch up to 700% and withstand over 10,000 deformation cycles.
  • In lab comparisons, the device tracked rapid blood pressure changes before and after exercise more precisely than conventional cuff monitors.
  • The study, led by Professor Seung Hwan Ko of Seoul National University with co–first authors Jung Jae Park and Sangwoo Hong, was published in Advanced Functional Materials.
  • Next-phase development will integrate wireless communication and AI-driven data analysis to support seamless, continuous hypertension tracking outside clinical settings.