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dc.contributor.authorXiong, Jiaqingen_US
dc.contributor.authorLuo, Hongshengen_US
dc.contributor.authorGao, Daceen_US
dc.contributor.authorZhou, Xinranen_US
dc.contributor.authorCui, Pengen_US
dc.contributor.authorThangavel, Gurunathanen_US
dc.contributor.authorParida, Kaushiken_US
dc.contributor.authorLee, Pooi Seeen_US
dc.identifier.citationXiong, J., Luo, H., Gao, D., Zhou, X., Cui, P., Thangavel, G., . . . Lee, P. S. (2019). Self-restoring, waterproof, tunable microstructural shape memory triboelectric nanogenerator for self-powered water temperature sensor. Nano Energy, 61, 584-593. doi:10.1016/j.nanoen.2019.04.089en_US
dc.description.abstractThe thermal induced temporal changes of microstructured shape memory polymer for self-recovery triboelectric nanogenerator can be indigenously harnessed for water energy harvesting and water temperature sensing, simultaneously. Here, tunable microarchitectures of a thermally triggered shape memory polymer are realized by electrospinning, namely mats of microfibers (MFs), microspheres (MSs), and microspheres-nanofibers (MSNFs). The tunable microarchitectured shape memory triboelectric nanogenerators (mSM-TENG) exhibit self-restoring ability in both macro shape and micro morphology, while attaining enhanced and alterable triboelectric output (∼150–320 V, ∼2.5–4 μA cm−2) due to increased frictional effects enabled by the high surface roughness. Typically, the MFs mat is realized as a skin-contact-driven shape memory TENG, serving well as wearable power source due to variable temporary shapes that are realizable under heating. At the micro level, self-restoring capability enabled by thermal stimuli renders the deformed mats capable of restoring to the original microstructures, affording the durable TENGs with prolonged lifetime. By the aid of a cellulose oleoyl ester, waterproof mat based TENGs with retentive rough surface are attainable for harvesting energy from both cold and hot water. Accordingly, a deformed waterproof TENG is found to be recoverable in shape under hot water. The gradient surface roughness delivers distinguishable triboelectric outputs during the structural recovery process, enabling a water energy harvester with sensing ability for water temperature (25 ± 5 °C to 95 °C), promising for self-powered waterproof wearable electronics and smart wastewater management system.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofNano Energyen_US
dc.rights© 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (
dc.titleSelf-restoring, waterproof, tunable microstructural shape memory triboelectric nanogenerator for self-powered water temperature sensoren_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsShape Memoryen_US
dc.description.acknowledgementThis work was supported by the Competitive Research Program (Award No. NRF-CRP13-2014-02), and Campus for Research Excellence and Technological Enterprise (CREATE) that is supported by the National Research Foundation, Prime Minister’s Office, Singapore.en_US
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