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Thermoplasmonic effect onto Toad physiology signals by plasmonic microchip structure.
S Akbari1, S M Hamidi2, H Eftekhari3
1Magneto-Plasmonic Lab, Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran.
Scientific Reports
|August 27, 2021
Summary
Researchers developed a flexible, wearable plasmonic biosensor for real-time physiological signal monitoring. This novel device accurately detects heartbeats and demonstrates sensitivity to temperature changes, paving the way for improved cardiovascular disease screening.
Area of Science:
- Biomedical Engineering
- Materials Science
- Cardiovascular Research
Background:
- Cardiovascular diseases are a leading cause of death globally, particularly in regions with limited early detection facilities.
- Real-time monitoring of physiological signals via wearable biosensors is crucial for proactive health management.
- Current screening methods often overlook the importance of continuous physiological monitoring.
Purpose of the Study:
- To propose a novel two-dimensional flexible and wearable gold-covered plasmonic sensor for physiological signal recording.
- To integrate nano-array resonant nanowire patterns on a plasmonic device platform for enhanced sensitivity.
- To evaluate the sensor's capability in detecting and recording heartbeats and assessing thermoplasmonic effects.
Main Methods:
- Fabrication of a flexible, wearable gold-covered plasmonic sensor with nano-array resonant nanowire patterns.
- Integration of the sensor onto a platform for real-time physiological signal acquisition.
- Recording of toad heart signals, comparing normal states with those under external laser heating.
- Analysis of surface plasmon waves paired with electric heart pulse waves for signal detection.
Main Results:
- The plasmonic sensor successfully recorded and detected the heartbeat of a toad with high accuracy.
- The sensor demonstrated sensitivity to changes in the toad's body temperature induced by laser heating.
- The thermoplasmonic effect was observed, manifesting as flattened T and P waves in the heart signal due to temperature variations.
Conclusions:
- The developed flexible and wearable plasmonic sensor is highly sensitive for physiological signal detection, including heart rate.
- The sensor's ability to detect thermoplasmonic effects highlights its potential for advanced cardiovascular monitoring.
- This technology offers a promising avenue for improving early detection and management of cardiovascular diseases, especially in resource-limited settings.
