| Autor: |
Naidonov, A. O., Koval, V. M., Dusheiko, M. H., Barbash, V. A., Yashchenko, O. V. |
| Předmět: |
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| Zdroj: |
Radioelectronics & Communications Systems; Oct2023, Vol. 66 Issue 10, p556-562, 7p |
| Abstrakt: |
The paper is devoted to studying the influence of the configuration of the tenso-sensitive element on the characteristics of bend sensors manufactured on the basis of nanocellulose (NC) and polyvinyl alcohol (PVA) composites. For this purpose, a suspension of NC was extracted during the oxidation of organosolvent cane cellulose in the medium of reagent 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO). Nanocellulose-based composite materials were obtained by mixing the NC suspension and PVA aqueous solution and vacuuming. The films were produced by pouring the mixture into Petri dishes and drying them in a thermal chamber. Technological masks were manufactured from magnetic material using photochemical etching to set different configurations for the tenso-resistors (U-, Π-, UU-, and ΠΠ-type). A metal strain-sensing element (Ti-Ni) was deposited on the surface of films by reactive magnetron sputtering in the argon medium. The atomic force microscopy (AFM) studied the surface morphology of different substrates. The strain-sensitive characteristics of bend sensors were measured, based on which the coefficients of strain-sensitivity, reversibility, and time drift were calculated. It has been established that the maximum value of strain sensitivity (16.19) occurs for sensors based on the NC–PVA composite with Π-type configuration. At the same time, the best reversibility (0.09%) was observed for sensors with a U-type configuration of the sensitive element. The results indicate the potential of using nanocellulose and PVA composites to develop elastic bend sensors in wearable electronics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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