Screen-printed interdigitated microelectrodes employment in dielectrophoretic manipulation of MWCNTs
As key enablers of Industry 4.0 and Internet of Things, sensors are among the first devices which are to encounter fast physical transformation (from rigid to flexible) as of large-scale utilization of printing technologies. In order to step-up this process, adaptation of conventional fabrication te...
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| Veröffentlicht in: | Mikrochimica acta (1966) 2023-11, Vol.190 (11), p.453-453, Article 453 |
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| container_title | Mikrochimica acta (1966) |
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| creator | Olariu, Marius Andrei Filip, Tudor Alexandru Peptu, Catalina Anisoara Turcan, Ina |
| description | As key enablers of Industry 4.0 and Internet of Things, sensors are among the first devices which are to encounter fast physical transformation (from rigid to flexible) as of large-scale utilization of printing technologies. In order to step-up this process, adaptation of conventional fabrication technologies (based on metallization) employed in sensors’ development should be tested and demonstrated. Within this paper, we are reporting the functionality of dielectrophoresis (DEP) for electromanipulation of multi-walled carbon nanotubes (MWCNTs) as sensing element, at the level of printed interdigitated electrodes. First, we present the flatbed screen-printed process of interdigitated microelectrodes on flexible substrate with tailored geometries employed afterwards for generating convenient dielectrophoretic forces of optimal magnitude and frequency for trapping MWCNTs. Successful dielectrophoresis operability of MWCNTs across silver-based screen-printed μIDE (interdigitated microelectrodes) provided with electrode gaps of ≈ 150 μm was validated and suitable values of the signal frequencies for avoiding parasitic electrokinetic phenomena (AC electro-osmosis, electrothermal effect) occurring simultaneously with DEP were identified. Time-dependent effect of DEP over MWCNTs bridges formation is discussed, as well as voltage magnitude contribution.
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| doi_str_mv | 10.1007/s00604-023-06023-3 |
| format | Article |
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Successful dielectrophoresis operability of MWCNTs across silver-based screen-printed μIDE (interdigitated microelectrodes) provided with electrode gaps of ≈ 150 μm was validated and suitable values of the signal frequencies for avoiding parasitic electrokinetic phenomena (AC electro-osmosis, electrothermal effect) occurring simultaneously with DEP were identified. Time-dependent effect of DEP over MWCNTs bridges formation is discussed, as well as voltage magnitude contribution.
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| subjects | Analytical Chemistry Characterization and Evaluation of Materials Chemistry Chemistry and Materials Science Dielectrophoresis Electrodes Electroosmosis Flatbed Industry 4.0 Internet of Things Metallizing Microelectrodes Microengineering Multi wall carbon nanotubes Nanochemistry Nanotechnology Nanotubes Original Paper Sensors Silver Substrates |
| title | Screen-printed interdigitated microelectrodes employment in dielectrophoretic manipulation of MWCNTs |
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