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Related Concept Videos

Patch Clamp01:18

Patch Clamp

Many fundamental cell functions such as muscle contraction and nerve transmission rely on the electrical signals produced by the movement of positively and negatively charged ions across the cell membrane. One competent method to record current flowing across the whole cell or single ion channel is the patch-clamp technique.
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...

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Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
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Biomimetic Patch with Wicking-Breathable and Multi-mechanism Adhesion for Bioelectrical Signal Monitoring.

Qian Zhang1, Keju Ji1, Tingwei Huo1

  • 1Jiangsu Provincial Key Laboratory of Bionic Functional Materials, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

ACS Applied Materials & Interfaces
|October 19, 2022
PubMed
Summary

This study introduces a biomimetic patch for wearable bioelectrical monitoring. The innovative design enhances comfort and breathability, enabling accurate physiological signal acquisition even under sweaty conditions.

Keywords:
bioelectrical signal monitoringbiomimetic patchbionic microstructuremulti-mechanism adhesionwicking-breathable

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Wearable Technology

Background:

  • Wearable bioelectrical monitoring devices are vital for remote healthcare, offering continuous physiological data for cardiovascular disease management.
  • Long-term skin contact presents comfort and adhesion challenges, hindering reliable data acquisition, especially with sweat.
  • Current hardware limitations necessitate improved patch design for enhanced user adaptability and consistent performance.

Purpose of the Study:

  • To develop a biomimetic patch with superior wicking-breathable and multi-mechanism adhesion properties.
  • To enhance the comfort and adaptability of wearable monitoring devices for long-term skin contact.
  • To ensure stable and accurate bioelectrical signal monitoring under challenging conditions like sweating.

Main Methods:

  • Designed a biomimetic patch featuring conical through-holes and hexagonal microgrooves for directional sweat transport.
  • Incorporated Ag/Ni microneedle arrays and PDMS-t for multi-mechanism adhesion, ensuring patch stability.
  • Experimentally verified the breathable and drainage capabilities using wicking structural mechanisms.

Main Results:

  • The biomimetic patch demonstrated effective directional sweat transport, achieving significant breathability.
  • Multi-mechanism adhesion ensured stable signal acquisition, overcoming challenges associated with skin contact and sweat.
  • The patch design proved adaptable and comfortable for long-term wear.

Conclusions:

  • The developed biomimetic patch offers a novel solution for enhancing breathability and adaptability in wearable monitoring devices.
  • This advancement facilitates accurate bioelectrical signal monitoring, even in the presence of sweat on human skin.
  • The study paves the way for more comfortable and reliable long-term remote health monitoring systems.