Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and Modeling
In this work, the working performance of Platinum (Pt), solvent-free nanoparticle (NP)-based strain sensors made on a flexible substrate has been studied. First, a new model has been developed in order to explain sensor behaviour under strain in a more effective manner than what has been previously...
| المؤلفون الرئيسيون: | , , , |
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| التنسيق: | مقال |
| اللغة: | English |
| منشور في: |
MDPI AG
2020-05-01
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| سلاسل: | Sensors |
| الموضوعات: | |
| الوصول للمادة أونلاين: | https://www.mdpi.com/1424-8220/20/9/2584 |
| _version_ | 1827717670220333056 |
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| author | Evangelos Aslanidis Evangelos Skotadis Evangelos Moutoulas Dimitris Tsoukalas |
| author_facet | Evangelos Aslanidis Evangelos Skotadis Evangelos Moutoulas Dimitris Tsoukalas |
| author_sort | Evangelos Aslanidis |
| collection | DOAJ |
| description | In this work, the working performance of Platinum (Pt), solvent-free nanoparticle (NP)-based strain sensors made on a flexible substrate has been studied. First, a new model has been developed in order to explain sensor behaviour under strain in a more effective manner than what has been previously reported. The proposed model also highlights the difference between sensors based on solvent-free and solvent-based NPs. As a second step, the ability of atomic layer deposition (ALD) developed Al<sub>2</sub>O<sub>3</sub> (alumina) thin films to act as protective coatings against humidity while in adverse conditions (i.e., variations in relative humidity and repeated mechanical stress) has been evaluated. Two different alumina thicknesses (5 and 11 nm) have been tested and their effect on protection against humidity is studied by monitoring sensor resistance. Even in the case of adverse working conditions and for increased mechanical strain (up to 1.2%), it is found that an alumina layer of 11 nm provides sufficient sensor protection, while the proposed model remains valid. This certifies the appropriateness of the proposed strain-sensing technology for demanding applications, such as e-skin and pressure or flow sensing, as well as the possibility of developing a comprehensive computational tool for NP-based devices. |
| first_indexed | 2024-03-10T20:05:40Z |
| format | Article |
| id | doaj.art-98b91527ddea418fb1ec11b6965ca6c7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T20:05:40Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-98b91527ddea418fb1ec11b6965ca6c72023-11-19T23:16:47ZengMDPI AGSensors1424-82202020-05-01209258410.3390/s20092584Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and ModelingEvangelos Aslanidis0Evangelos Skotadis1Evangelos Moutoulas2Dimitris Tsoukalas3Department of Applied Physics, National Technical University of Athens, 15780 Athens, GreeceDepartment of Applied Physics, National Technical University of Athens, 15780 Athens, GreeceDepartment of Applied Physics, National Technical University of Athens, 15780 Athens, GreeceDepartment of Applied Physics, National Technical University of Athens, 15780 Athens, GreeceIn this work, the working performance of Platinum (Pt), solvent-free nanoparticle (NP)-based strain sensors made on a flexible substrate has been studied. First, a new model has been developed in order to explain sensor behaviour under strain in a more effective manner than what has been previously reported. The proposed model also highlights the difference between sensors based on solvent-free and solvent-based NPs. As a second step, the ability of atomic layer deposition (ALD) developed Al<sub>2</sub>O<sub>3</sub> (alumina) thin films to act as protective coatings against humidity while in adverse conditions (i.e., variations in relative humidity and repeated mechanical stress) has been evaluated. Two different alumina thicknesses (5 and 11 nm) have been tested and their effect on protection against humidity is studied by monitoring sensor resistance. Even in the case of adverse working conditions and for increased mechanical strain (up to 1.2%), it is found that an alumina layer of 11 nm provides sufficient sensor protection, while the proposed model remains valid. This certifies the appropriateness of the proposed strain-sensing technology for demanding applications, such as e-skin and pressure or flow sensing, as well as the possibility of developing a comprehensive computational tool for NP-based devices.https://www.mdpi.com/1424-8220/20/9/2584flexible sensorsnanoparticle sensorstunneling modelenduranceatomic layer depositionstrain sensors |
| spellingShingle | Evangelos Aslanidis Evangelos Skotadis Evangelos Moutoulas Dimitris Tsoukalas Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and Modeling Sensors flexible sensors nanoparticle sensors tunneling model endurance atomic layer deposition strain sensors |
| title | Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and Modeling |
| title_full | Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and Modeling |
| title_fullStr | Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and Modeling |
| title_full_unstemmed | Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and Modeling |
| title_short | Thin Film Protected Flexible Nanoparticle Strain Sensors: Experiments and Modeling |
| title_sort | thin film protected flexible nanoparticle strain sensors experiments and modeling |
| topic | flexible sensors nanoparticle sensors tunneling model endurance atomic layer deposition strain sensors |
| url | https://www.mdpi.com/1424-8220/20/9/2584 |
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