Pulse Oximetry Using Organic Optoelectronics under Ambient Light
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- Donggeon Han
- Department of Electrical Engineering and Computer Sciences University of California Berkeley CA 94720 USA
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- Yasser Khan
- Department of Electrical Engineering and Computer Sciences University of California Berkeley CA 94720 USA
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- Jonathan Ting
- Department of Electrical Engineering and Computer Sciences University of California Berkeley CA 94720 USA
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- Juan Zhu
- Department of Electrical Engineering and Computer Sciences University of California Berkeley CA 94720 USA
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- Craig Combe
- Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955‐6900 Saudi Arabia
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- Andrew Wadsworth
- Department of Chemistry Imperial College London London SW72AZ UK
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- Iain McCulloch
- Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955‐6900 Saudi Arabia
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- Ana C. Arias
- Department of Electrical Engineering and Computer Sciences University of California Berkeley CA 94720 USA
説明
<jats:title>Abstract</jats:title><jats:p>Light absorption in oxygenated and deoxygenated blood varies appreciably over the visible and near‐infrared spectrum. Pulse oximeters use two distinct wavelengths of light to measure oxygen saturation SpO<jats:sub>2</jats:sub> of blood. Currently, light‐emitting diodes (LEDs) are used in oximeters, which need additional components to drive them and negatively impact the overall size of the sensor. In this work, an ambient light oximeter (ALO) is demonstrated, which can measure photoplethysmography signals and SpO<jats:sub>2</jats:sub> using various kinds of ambient light, avoiding the use of LEDs. Spectral filters are combined with organic photodiodes to create the ALO with sensitivity peaks at green (525 nm), red (610 nm), and near‐infrared (740 nm) wavelengths. Finally, the wearable ALO is used to measure photoplethysmography signals and SpO<jats:sub>2</jats:sub> on the index finger in different indoor and outdoor lighting conditions and the measurements are validated with commercial pulse oximeters under normal and ischemic conditions.</jats:p>
収録刊行物
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- Advanced Materials Technologies
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Advanced Materials Technologies 5 (5), 2020-03-06
Wiley
