Wearable, stable, highly sensitive hydrogel–graphene strain sensors
A stable and highly sensitive graphene/hydrogel strain sensor is designed by introducing glycerol as a co-solvent in the formation of a hydrogel substrate and then casting a graphene solution onto the hydrogel in a simple, two-step method. This hydrogel-based strain sensor can effectively retain wat...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Beilstein-Institut
2019-02-01
|
| Series: | Beilstein Journal of Nanotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjnano.10.47 |
| _version_ | 1811278429648060416 |
|---|---|
| author | Jian Lv Chuncai Kong Chao Yang Lu Yin Itthipon Jeerapan Fangzhao Pu Xiaojing Zhang Sen Yang Zhimao Yang |
| author_facet | Jian Lv Chuncai Kong Chao Yang Lu Yin Itthipon Jeerapan Fangzhao Pu Xiaojing Zhang Sen Yang Zhimao Yang |
| author_sort | Jian Lv |
| collection | DOAJ |
| description | A stable and highly sensitive graphene/hydrogel strain sensor is designed by introducing glycerol as a co-solvent in the formation of a hydrogel substrate and then casting a graphene solution onto the hydrogel in a simple, two-step method. This hydrogel-based strain sensor can effectively retain water in the polymer network due to the formation of strong hydrogen bonding between glycerol and water. The addition of glycerol not only enhances the stability of the hydrogel over a wider temperature range, but also increases the stretchability of the hydrogel from 800% to 2000%. The enhanced sensitivity can be attributed to the graphene film, whereby the graphene flakes redistribute to optimize the contact area under different strains. The careful design enables this sensor to be used in both stretching and bending modes. As a demonstration, the as-prepared strain sensor was applied to sense the movement of finger knuckles. Given the outstanding performance of this wearable sensor, together with the proposed scalable fabrication method, this stable and sensitive hydrogel strain sensor is considered to have great potential in the field of wearable sensors. |
| first_indexed | 2024-04-13T00:35:42Z |
| format | Article |
| id | doaj.art-63a50930c5be48b58a7894e623d5b87b |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-04-13T00:35:42Z |
| publishDate | 2019-02-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-63a50930c5be48b58a7894e623d5b87b2022-12-22T03:10:20ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862019-02-0110147548010.3762/bjnano.10.472190-4286-10-47Wearable, stable, highly sensitive hydrogel–graphene strain sensorsJian Lv0Chuncai Kong1Chao Yang2Lu Yin3Itthipon Jeerapan4Fangzhao Pu5Xiaojing Zhang6Sen Yang7Zhimao Yang8School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P. R. ChinaSchool of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P. R. ChinaSchool of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P. R. ChinaDepartment of NanoEngineering, University of California, San Diego, La Jolla, California 92093, USADepartment of NanoEngineering, University of California, San Diego, La Jolla, California 92093, USASchool of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P. R. ChinaSchool of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P. R. ChinaSchool of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P. R. ChinaSchool of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P. R. ChinaA stable and highly sensitive graphene/hydrogel strain sensor is designed by introducing glycerol as a co-solvent in the formation of a hydrogel substrate and then casting a graphene solution onto the hydrogel in a simple, two-step method. This hydrogel-based strain sensor can effectively retain water in the polymer network due to the formation of strong hydrogen bonding between glycerol and water. The addition of glycerol not only enhances the stability of the hydrogel over a wider temperature range, but also increases the stretchability of the hydrogel from 800% to 2000%. The enhanced sensitivity can be attributed to the graphene film, whereby the graphene flakes redistribute to optimize the contact area under different strains. The careful design enables this sensor to be used in both stretching and bending modes. As a demonstration, the as-prepared strain sensor was applied to sense the movement of finger knuckles. Given the outstanding performance of this wearable sensor, together with the proposed scalable fabrication method, this stable and sensitive hydrogel strain sensor is considered to have great potential in the field of wearable sensors.https://doi.org/10.3762/bjnano.10.47graphenehigh sensitivityhydrogelstrain sensorwearable sensor |
| spellingShingle | Jian Lv Chuncai Kong Chao Yang Lu Yin Itthipon Jeerapan Fangzhao Pu Xiaojing Zhang Sen Yang Zhimao Yang Wearable, stable, highly sensitive hydrogel–graphene strain sensors Beilstein Journal of Nanotechnology graphene high sensitivity hydrogel strain sensor wearable sensor |
| title | Wearable, stable, highly sensitive hydrogel–graphene strain sensors |
| title_full | Wearable, stable, highly sensitive hydrogel–graphene strain sensors |
| title_fullStr | Wearable, stable, highly sensitive hydrogel–graphene strain sensors |
| title_full_unstemmed | Wearable, stable, highly sensitive hydrogel–graphene strain sensors |
| title_short | Wearable, stable, highly sensitive hydrogel–graphene strain sensors |
| title_sort | wearable stable highly sensitive hydrogel graphene strain sensors |
| topic | graphene high sensitivity hydrogel strain sensor wearable sensor |
| url | https://doi.org/10.3762/bjnano.10.47 |
| work_keys_str_mv | AT jianlv wearablestablehighlysensitivehydrogelgraphenestrainsensors AT chuncaikong wearablestablehighlysensitivehydrogelgraphenestrainsensors AT chaoyang wearablestablehighlysensitivehydrogelgraphenestrainsensors AT luyin wearablestablehighlysensitivehydrogelgraphenestrainsensors AT itthiponjeerapan wearablestablehighlysensitivehydrogelgraphenestrainsensors AT fangzhaopu wearablestablehighlysensitivehydrogelgraphenestrainsensors AT xiaojingzhang wearablestablehighlysensitivehydrogelgraphenestrainsensors AT senyang wearablestablehighlysensitivehydrogelgraphenestrainsensors AT zhimaoyang wearablestablehighlysensitivehydrogelgraphenestrainsensors |