DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yun, Seong-Yun | ko |
dc.contributor.author | Tcho, Il-Woong | ko |
dc.contributor.author | Kim, Weon-Guk | ko |
dc.contributor.author | Kim, Do-Wan | ko |
dc.contributor.author | Son, Joon-Ha | ko |
dc.contributor.author | Lee, Sang-Won | ko |
dc.contributor.author | Choi, Yang-Kyu | ko |
dc.date.accessioned | 2022-06-22T06:00:37Z | - |
dc.date.available | 2022-06-22T06:00:37Z | - |
dc.date.created | 2022-04-11 | - |
dc.date.created | 2022-04-11 | - |
dc.date.created | 2022-04-11 | - |
dc.date.issued | 2022-05 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.10, no.19, pp.10383 - 10390 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/297052 | - |
dc.description.abstract | As interest in wearable electronics continues to increase, a triboelectric nanogenerator (TENG) which uses a conductive liquid as a single electrode has attracted considerable attention. Even though a liquid-based TENG is attractive for power supply to drive a wearable device due to its intrinsic shape-adaptability, a mechanical weakness is problematic. To improve its weak mechanical robustness, here, a TENG was developed using a shear thickening fluid (STF-TENG) that has a Janus-face property of a solid and a liquid. It is composed of an eco-friendly material: water, corn starch, salt (NaCl), which is preferable for an ‘appropriate technology’. The viscosity of the shear thickening fluid increases as the shear rate increases. The unique behaviours of the STF-TENG were compared to two control TENGs, composed of a conventional liquid and a solid electrode, respectively, and analyzed in terms of a shear thickening effect (STE). Unlike the two control TENGs, the electrical output of the STF-TENG varied according to the applied shear rate. In detail, the STF-TENG takes advantage of a larger contact area at a low shear rate produced by low velocity applied pressure, and a greater contact force at a high shear rate produced by high velocity applied pressure. The STF-TENG showed an inherent impact-absorbing property, which was evaluated using a metal ball dropped from various heights. After a durability test of 102,600 cycles of contact-separation, the output voltage of the STF-TENG did not decrease. Its mechanical robustness was confirmed by a stabbing experiment with a pointed gimlet. Thus, the proposed STF-TENG can protect a human body from strong impact while simultaneously harvesting biomechanical energy. These distinctive features can be favourably utilized as a multi-functional sensor without the need for an external power supply such as a battery. As a practical application, the STF-TENG was demonstrated as an impact monitoring system linked to a smartphone to provide a warning when a strong impulse was applied to the human body. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Mechanically robust triboelectric nanogenerator with a shear thickening fluid for impact monitoring | - |
dc.type | Article | - |
dc.identifier.wosid | 000789380800001 | - |
dc.identifier.scopusid | 2-s2.0-85129943464 | - |
dc.type.rims | ART | - |
dc.citation.volume | 10 | - |
dc.citation.issue | 19 | - |
dc.citation.beginningpage | 10383 | - |
dc.citation.endingpage | 10390 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/D2TA01209J | - |
dc.contributor.localauthor | Choi, Yang-Kyu | - |
dc.contributor.nonIdAuthor | Yun, Seong-Yun | - |
dc.contributor.nonIdAuthor | Son, Joon-Ha | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | RHEOLOGY | - |
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