Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensors
Abstract The interest in highly sensitive sensors is rapidly increasing for detecting very tiny signals for Internet of Things devices. Here, we achieve ultra-sensitive correlated breathable sensors based on freestanding VO2 membranes. We fabricate the membranes by growing VO2 films onto sacrificial...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-02-01
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| Series: | Nano Convergence |
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| Online Access: | https://doi.org/10.1186/s40580-025-00476-3 |
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| author | Dongha Kim Dongju Lee Jiseok Park Jihoon Bae Aiping Chen Judith L. MacManus-Driscoll Sungwon Lee Shinbuhm Lee |
| author_facet | Dongha Kim Dongju Lee Jiseok Park Jihoon Bae Aiping Chen Judith L. MacManus-Driscoll Sungwon Lee Shinbuhm Lee |
| author_sort | Dongha Kim |
| collection | DOAJ |
| description | Abstract The interest in highly sensitive sensors is rapidly increasing for detecting very tiny signals for Internet of Things devices. Here, we achieve ultra-sensitive correlated breathable sensors based on freestanding VO2 membranes. We fabricate the membranes by growing VO2 films onto sacrificial Sr3Al2O6 layer grown on SrTiO3, selectively dissolving the Sr3Al2O6 in water, and then rendering freestanding VO2 membrane on nanomesh. The nanomeshes are extremely flexible, sweat permeable, and readily skin-adhesive. The resistance of the VO2 membranes is reversibly tuned by human’s tiny mechanical stimuli and breath stimuli. The stimuli modulate the Peierls dimerization of one-dimensional V−V chains in the VO2 lattice which concomitantly controls the electron correlation and hence resistivity. Since our breathable sensors operate based on quantum-mechanical correlation effects, their sensitivity is 1−2 orders of magnitude higher than conventional tactile and respiratory sensors based on other materials. Thus, the freestanding membranes of correlated oxides on epidermal nanomeshes are multifunctional platforms for developing ultra-sensitive correlated breathable sensors. Graphical Abstract |
| format | Article |
| id | doaj-art-7787e3c44d434f33b4541a9b0ba2fc28 |
| institution | Kabale University |
| issn | 2196-5404 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano Convergence |
| spelling | doaj-art-7787e3c44d434f33b4541a9b0ba2fc282025-02-09T12:49:48ZengSpringerOpenNano Convergence2196-54042025-02-011211910.1186/s40580-025-00476-3Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensorsDongha Kim0Dongju Lee1Jiseok Park2Jihoon Bae3Aiping Chen4Judith L. MacManus-Driscoll5Sungwon Lee6Shinbuhm Lee7Department of Physics and Chemistry, Department of Emerging Materials Science, DGISTDepartment of Physics and Chemistry, Department of Emerging Materials Science, DGISTDepartment of Physics and Chemistry, Department of Emerging Materials Science, DGISTDepartment of Physics and Chemistry, Department of Emerging Materials Science, DGISTCenter for Integrated Nanotechnologies, Los Alamos National LaboratoryDepartment of Materials Science and Metallurgy, University of CambridgeDepartment of Physics and Chemistry, Department of Emerging Materials Science, DGISTDepartment of Physics and Chemistry, Department of Emerging Materials Science, DGISTAbstract The interest in highly sensitive sensors is rapidly increasing for detecting very tiny signals for Internet of Things devices. Here, we achieve ultra-sensitive correlated breathable sensors based on freestanding VO2 membranes. We fabricate the membranes by growing VO2 films onto sacrificial Sr3Al2O6 layer grown on SrTiO3, selectively dissolving the Sr3Al2O6 in water, and then rendering freestanding VO2 membrane on nanomesh. The nanomeshes are extremely flexible, sweat permeable, and readily skin-adhesive. The resistance of the VO2 membranes is reversibly tuned by human’s tiny mechanical stimuli and breath stimuli. The stimuli modulate the Peierls dimerization of one-dimensional V−V chains in the VO2 lattice which concomitantly controls the electron correlation and hence resistivity. Since our breathable sensors operate based on quantum-mechanical correlation effects, their sensitivity is 1−2 orders of magnitude higher than conventional tactile and respiratory sensors based on other materials. Thus, the freestanding membranes of correlated oxides on epidermal nanomeshes are multifunctional platforms for developing ultra-sensitive correlated breathable sensors. Graphical Abstracthttps://doi.org/10.1186/s40580-025-00476-3Correlated breathable sensorVO2Freestanding membraneEpidermal nanomeshSr3Al2O6Tactile sensor |
| spellingShingle | Dongha Kim Dongju Lee Jiseok Park Jihoon Bae Aiping Chen Judith L. MacManus-Driscoll Sungwon Lee Shinbuhm Lee Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensors Nano Convergence Correlated breathable sensor VO2 Freestanding membrane Epidermal nanomesh Sr3Al2O6 Tactile sensor |
| title | Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensors |
| title_full | Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensors |
| title_fullStr | Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensors |
| title_full_unstemmed | Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensors |
| title_short | Freestanding VO2 membranes on epidermal nanomesh for ultra-sensitive correlated breathable sensors |
| title_sort | freestanding vo2 membranes on epidermal nanomesh for ultra sensitive correlated breathable sensors |
| topic | Correlated breathable sensor VO2 Freestanding membrane Epidermal nanomesh Sr3Al2O6 Tactile sensor |
| url | https://doi.org/10.1186/s40580-025-00476-3 |
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