Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 조윌렴 | * |
dc.date.accessioned | 2016-08-28T10:08:46Z | - |
dc.date.available | 2016-08-28T10:08:46Z | - |
dc.date.issued | 2012 | * |
dc.identifier.issn | 0957-4484 | * |
dc.identifier.other | OAK-9220 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/223011 | - |
dc.description.abstract | In spite of high piezoelectricity, only a few one-dimensional ferroelectric nano-materials with perovskite structure have been used for piezoelectric nanogenerator applications. In this paper, we report high output electrical signals, i.e.an open-circuit voltage of 3.2V and a closed-circuit current of 67.5nA (current density 9.3nAcm 2) at 0.38% strain and 15.2%s 1 strain rate, using randomly aligned lead-free KNbO 3 ferroelectric nanorods (∼1μm length) with piezoelectric coefficient (d 33∼55pmV 1). A flexible piezoelectric nanogenerator is mainly composed of KNbO 3-poly(dimethylsiloxane) (PDMS) composite sandwiched by Au/Cr-coated polymer substrates. We deposit a thin poly(methyl methacrylate) (PMMA) layer between the KNbO 3-PDMS composite and the Au/Cr electrode to completely prevent dielectric breakdown during electrical poling and to significantly reduce leakage current during excessive straining. The flexible KNbO 3-PDMS composite device shows a nearly frequency-independent dielectric constant (∼3.2) and low dielectric loss (<0.006) for the frequency range of 10 2-10 5Hz. These results imply that short and randomly aligned ferroelectric nanorods can be used for a flexible high output nanogenerator as well as high-k capacitor applications by performing electrical poling and further optimizing the device structure. © 2012 IOP Publishing Ltd. | * |
dc.language | English | * |
dc.title | Lead-free KNbO 3 ferroelectric nanorod based flexible nanogenerators and capacitors | * |
dc.type | Article | * |
dc.relation.issue | 37 | * |
dc.relation.volume | 23 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | Nanotechnology | * |
dc.identifier.doi | 10.1088/0957-4484/23/37/375401 | * |
dc.identifier.wosid | WOS:000308810800008 | * |
dc.identifier.scopusid | 2-s2.0-84865439314 | * |
dc.author.google | Jung J.H. | * |
dc.author.google | Chen C.-Y. | * |
dc.author.google | Yun B.K. | * |
dc.author.google | Lee N. | * |
dc.author.google | Zhou Y. | * |
dc.author.google | Jo W. | * |
dc.author.google | Chou L.-J. | * |
dc.author.google | Wang Z.L. | * |
dc.contributor.scopusid | 조윌렴(7103322276) | * |
dc.date.modifydate | 20240123091004 | * |