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Biomimetic dual sensing polymer nanocomposite for biomedical applications
Abdalla M Omar1, Mohamed H Hassan1,2, Evangelos Daskalakis1,2
1Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom.
Frontiers in Bioengineering and Biotechnology
|March 6, 2024
Summary
Researchers developed a novel dual sensing polymer nanocomposite for advanced wearable devices. This material mimics skin mechanoreceptors to simultaneously detect slow and fast pressure changes, enabling precise vital sign monitoring.
Area of Science:
- Materials Science
- Biomedical Engineering
- Nanotechnology
Background:
- Growing demand for multi-functional sensing materials in wearable devices and implantable sensors.
- Human physiology requires materials capable of detecting both slow and fast pressure fluctuations.
- Mimicking skin mechanoreceptors (SA and FA) is key for developing advanced biomedical sensors.
Purpose of the Study:
- To develop a novel dual sensing polymer nanocomposite for biomedical applications.
- To combine capacitive and piezoelectric properties in a single material.
- To enable simultaneous detection of slow and fast pressure fluctuations.
Main Methods:
- Fabrication of a polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP)-based nanocomposite.
- Utilizing electrospinning with controlled parameters and nucleating agents like Carbon Black (CB).
- Enhancing β-phase crystallinity, fiber thickness, and morphology for dual sensing capabilities.
Main Results:
- The developed PVDF-HFP/CB nanocomposite exhibits dual sensing capabilities for both slow and fast pressure changes.
- Achieved high capacitance (5.37 nF) and output voltage (1.51 V).
- Demonstrated potential for accurate and reliable measurements in biomedical applications.
Conclusions:
- The novel PVDF-HFP/CB nanocomposite successfully integrates capacitive and piezoelectric properties.
- This material effectively mimics biological mechanoreceptors for dual pressure sensing.
- The developed nanocomposite shows significant promise for advanced wearable and implantable sensing devices.
