A conformable imager for biometric authentication and vital sign measurement
説明
Flexible imagers can be placed in direct contact with a person’s skin, allowing vital signs to be monitored continuously. However, developing flexible imagers that offer both high definition and high speed has proved challenging. Here we show that a combination of polycrystalline silicon thin-film transistor readout circuits and organic photodiodes with high sensitivity in the near-infrared region can be used to create a conformable imager with a resolution of 508 pixels per inch, a speed of 41 frames per second and a total thickness of only 15 μm. The imager can read out a photocurrent of less than 10 pA with low noise, and can obtain static biometric signals, including images of fingerprints and veins, via soft contact with the skin. It can also be used to map a pulse wave, electronically selecting the best measurement location by analysing the area distribution. A conformable imager with a resolution of 508 pixels per inch, a speed of 41 frames per second and a total thickness of only 15 μm can be used to capture images of fingerprints and veins, and to map pulse waves.
収録刊行物
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- Nature Electronics
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Nature Electronics 3 (2), 113-121, 2020-01-20
Springer Science and Business Media LLC
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詳細情報 詳細情報について
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- CRID
- 1360005518383143168
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- ISSN
- 25201131
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE
