Super-sensitive nanobrush-based carbon nanofiber aggregates
A carbon nanofiber aggregate of exceptional sensitivity is developed. Our approach involves the development and utilization of a novel nanobrush structure of carbon nanofiber within the mortar matrix. The high number of nanostructures in the nanobrush, particularly near the electrodes, results in a...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S026412752400008X |
| _version_ | 1797301614863712256 |
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| author | Bhagirath Joshi Jiaji Wang Xiaonan Shan Y.L. Mo Thomas T.C. Hsu |
| author_facet | Bhagirath Joshi Jiaji Wang Xiaonan Shan Y.L. Mo Thomas T.C. Hsu |
| author_sort | Bhagirath Joshi |
| collection | DOAJ |
| description | A carbon nanofiber aggregate of exceptional sensitivity is developed. Our approach involves the development and utilization of a novel nanobrush structure of carbon nanofiber within the mortar matrix. The high number of nanostructures in the nanobrush, particularly near the electrodes, results in a greater number of nanogaps, leading to a substantial improvement in sensitivity. We are able to detect forces as small as 1 N using this sensor. The carbon nanofiber brush (CNFB) provides a well-defined conductive path for the piezoresistive functioning of the super-sensitive carbon nanofiber aggregate (SSCNFA) with significantly reduced cost. The influence of scanning frequency in impedance is rigorously investigated with alternating current (AC) based on two methods. SSCNFAs are tested in uniaxial compression to determine the highly sensitive face of cube sensor. An SSCNFA (0.05 % CNFs, dense electrodes) and a CNFA (0.5 % CNFs, wide-spaced electrodes) were tested in a sweep-frequency test under parallel compression to compare the super-sensitive performance of the new sensor. The gauge factors at various frequencies were determined. The electrical impedance measured at various frequencies provides versatility to the SSCNFA for stress monitoring. Four fixed-frequency tests were conducted to determine the resolution under uniaxial compression and examine repeatability. |
| first_indexed | 2024-03-07T23:25:07Z |
| format | Article |
| id | doaj.art-c12943a5158d48c4af2dcf0a3a2e44fa |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-07T23:25:07Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-c12943a5158d48c4af2dcf0a3a2e44fa2024-02-21T05:23:51ZengElsevierMaterials & Design0264-12752024-02-01238112636Super-sensitive nanobrush-based carbon nanofiber aggregatesBhagirath Joshi0Jiaji Wang1Xiaonan Shan2Y.L. Mo3Thomas T.C. Hsu4Department of Civil and Environmental Engineering, University of Houston, Houston, TX, United StatesDepartment of Civil Engineering, the University of Hong Kong, Hong Kong, China; Corresponding authors.Department of Electrical and Computer Engineering, University of Houston, Houston, TX, United States; Corresponding authors.Department of Civil and Environmental Engineering, University of Houston, Houston, TX, United States; Corresponding authors.Department of Civil and Environmental Engineering, University of Houston, Houston, TX, United StatesA carbon nanofiber aggregate of exceptional sensitivity is developed. Our approach involves the development and utilization of a novel nanobrush structure of carbon nanofiber within the mortar matrix. The high number of nanostructures in the nanobrush, particularly near the electrodes, results in a greater number of nanogaps, leading to a substantial improvement in sensitivity. We are able to detect forces as small as 1 N using this sensor. The carbon nanofiber brush (CNFB) provides a well-defined conductive path for the piezoresistive functioning of the super-sensitive carbon nanofiber aggregate (SSCNFA) with significantly reduced cost. The influence of scanning frequency in impedance is rigorously investigated with alternating current (AC) based on two methods. SSCNFAs are tested in uniaxial compression to determine the highly sensitive face of cube sensor. An SSCNFA (0.05 % CNFs, dense electrodes) and a CNFA (0.5 % CNFs, wide-spaced electrodes) were tested in a sweep-frequency test under parallel compression to compare the super-sensitive performance of the new sensor. The gauge factors at various frequencies were determined. The electrical impedance measured at various frequencies provides versatility to the SSCNFA for stress monitoring. Four fixed-frequency tests were conducted to determine the resolution under uniaxial compression and examine repeatability.http://www.sciencedirect.com/science/article/pii/S026412752400008XSuper SensitiveCarbon NanofibersSmart MaterialsFrequency ResponseElectrical PropertiesMechanical Testing |
| spellingShingle | Bhagirath Joshi Jiaji Wang Xiaonan Shan Y.L. Mo Thomas T.C. Hsu Super-sensitive nanobrush-based carbon nanofiber aggregates Materials & Design Super Sensitive Carbon Nanofibers Smart Materials Frequency Response Electrical Properties Mechanical Testing |
| title | Super-sensitive nanobrush-based carbon nanofiber aggregates |
| title_full | Super-sensitive nanobrush-based carbon nanofiber aggregates |
| title_fullStr | Super-sensitive nanobrush-based carbon nanofiber aggregates |
| title_full_unstemmed | Super-sensitive nanobrush-based carbon nanofiber aggregates |
| title_short | Super-sensitive nanobrush-based carbon nanofiber aggregates |
| title_sort | super sensitive nanobrush based carbon nanofiber aggregates |
| topic | Super Sensitive Carbon Nanofibers Smart Materials Frequency Response Electrical Properties Mechanical Testing |
| url | http://www.sciencedirect.com/science/article/pii/S026412752400008X |
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