Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal Monitoring
Abstract Flexible sensors are currently the subject of intensive research, as they allow cost‐effective and environmentally friendly production of large‐area, flexible, and when fabricated on ultrathin substrates, highly conformable devices. Among many intriguing applications, tactile and biosignal...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-09-01
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| Series: | Advanced Electronic Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aelm.202201333 |
| _version_ | 1797688348844752896 |
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| author | Esther Karner‐Petritz Andreas Petritz Takafumi Uemura Naoko Namba Teppei Araki Tsuyoshi Sekitani Barbara Stadlober |
| author_facet | Esther Karner‐Petritz Andreas Petritz Takafumi Uemura Naoko Namba Teppei Araki Tsuyoshi Sekitani Barbara Stadlober |
| author_sort | Esther Karner‐Petritz |
| collection | DOAJ |
| description | Abstract Flexible sensors are currently the subject of intensive research, as they allow cost‐effective and environmentally friendly production of large‐area, flexible, and when fabricated on ultrathin substrates, highly conformable devices. Among many intriguing applications, tactile and biosignal monitoring, where lightweight sensors with high wearing comfort are particularly interesting, is focused on here. The required spatiotemporal resolution of the signals is achieved by integrating the sensors in an active matrix configuration. Organic ferroelectric transducers of high uniformity, characterized, for example, by a sensitivity spread of only 1.5%, are combined with similarly uniform ultralow noise level organic thin film transistors operating below 5 V, showing, for example, a threshold voltage variation of just 0.13 V, in a 12 × 12 sensor array. The transistors transition frequency of up to 160 kHz (saturation range) and 17 kHz (linear range) allows for a high spatiotemporal resolution of ≈3 mm at a frame rate of 1400 fps. The thickness of only 2.8 µm renders the organic active matrix sensor sheet ultraflexible and therefore virtually imperceptible on the human skin. Real‐time monitoring of tactile modes in a subset of 8 × 3 pixels and of the pulse wave including heart rate and blood pressure using four sensors of the matrix is demonstrated. |
| first_indexed | 2024-03-12T01:30:49Z |
| format | Article |
| id | doaj.art-f8a2889d5431498f8342015eef62c069 |
| institution | Directory Open Access Journal |
| issn | 2199-160X |
| language | English |
| last_indexed | 2024-03-12T01:30:49Z |
| publishDate | 2023-09-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj.art-f8a2889d5431498f8342015eef62c0692023-09-12T05:36:19ZengWiley-VCHAdvanced Electronic Materials2199-160X2023-09-0199n/an/a10.1002/aelm.202201333Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal MonitoringEsther Karner‐Petritz0Andreas Petritz1Takafumi Uemura2Naoko Namba3Teppei Araki4Tsuyoshi Sekitani5Barbara Stadlober6The Institute of Scientific and Industrial Research (SANKEN) Osaka University Ibaraki Osaka 567‐0047 JapanThe Institute of Scientific and Industrial Research (SANKEN) Osaka University Ibaraki Osaka 567‐0047 JapanThe Institute of Scientific and Industrial Research (SANKEN) Osaka University Ibaraki Osaka 567‐0047 JapanThe Institute of Scientific and Industrial Research (SANKEN) Osaka University Ibaraki Osaka 567‐0047 JapanThe Institute of Scientific and Industrial Research (SANKEN) Osaka University Ibaraki Osaka 567‐0047 JapanThe Institute of Scientific and Industrial Research (SANKEN) Osaka University Ibaraki Osaka 567‐0047 JapanJOANNEUM RESEARCH Forschungsgesellschaft mbH MATERIALS – Institute for Sensors Photonics and Manufacturing Technologies Franz‐Pichler Straße 30 Weiz 8160 AustriaAbstract Flexible sensors are currently the subject of intensive research, as they allow cost‐effective and environmentally friendly production of large‐area, flexible, and when fabricated on ultrathin substrates, highly conformable devices. Among many intriguing applications, tactile and biosignal monitoring, where lightweight sensors with high wearing comfort are particularly interesting, is focused on here. The required spatiotemporal resolution of the signals is achieved by integrating the sensors in an active matrix configuration. Organic ferroelectric transducers of high uniformity, characterized, for example, by a sensitivity spread of only 1.5%, are combined with similarly uniform ultralow noise level organic thin film transistors operating below 5 V, showing, for example, a threshold voltage variation of just 0.13 V, in a 12 × 12 sensor array. The transistors transition frequency of up to 160 kHz (saturation range) and 17 kHz (linear range) allows for a high spatiotemporal resolution of ≈3 mm at a frame rate of 1400 fps. The thickness of only 2.8 µm renders the organic active matrix sensor sheet ultraflexible and therefore virtually imperceptible on the human skin. Real‐time monitoring of tactile modes in a subset of 8 × 3 pixels and of the pulse wave including heart rate and blood pressure using four sensors of the matrix is demonstrated.https://doi.org/10.1002/aelm.202201333biosignal monitoringe‐health patcheselectronic skinsorganic ferroelectric transducersorganic electronicsultraflexible sensor sheets |
| spellingShingle | Esther Karner‐Petritz Andreas Petritz Takafumi Uemura Naoko Namba Teppei Araki Tsuyoshi Sekitani Barbara Stadlober Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal Monitoring Advanced Electronic Materials biosignal monitoring e‐health patches electronic skins organic ferroelectric transducers organic electronics ultraflexible sensor sheets |
| title | Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal Monitoring |
| title_full | Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal Monitoring |
| title_fullStr | Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal Monitoring |
| title_full_unstemmed | Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal Monitoring |
| title_short | Ultraflexible Organic Active Matrix Sensor Sheet for Tactile and Biosignal Monitoring |
| title_sort | ultraflexible organic active matrix sensor sheet for tactile and biosignal monitoring |
| topic | biosignal monitoring e‐health patches electronic skins organic ferroelectric transducers organic electronics ultraflexible sensor sheets |
| url | https://doi.org/10.1002/aelm.202201333 |
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