Show simple item record

dc.contributor.authorZhang, Yong Qiang
dc.contributor.authorChen, Kai
dc.contributor.authorShen, Hao
dc.contributor.authorWang, Yue Cun
dc.contributor.authorHedhili, Mohamed N.
dc.contributor.authorZhang, Xixiang
dc.contributor.authorLi, Ju
dc.contributor.authorShan, Zhi Wei
dc.date.accessioned2021-03-29T05:58:24Z
dc.date.available2021-03-29T05:58:24Z
dc.date.issued2021-03-24
dc.date.submitted2020-09-24
dc.identifier.citationZhang, Y.-Q., Chen, K., Shen, H., Wang, Y.-C., Hedhili, M. N., Zhang, X., … Shan, Z.-W. (2021). Achieving room-temperature M2-phase VO2 nanowires for superior thermal actuation. Nano Research. doi:10.1007/s12274-021-3355-6
dc.identifier.issn1998-0000
dc.identifier.issn1998-0124
dc.identifier.doi10.1007/s12274-021-3355-6
dc.identifier.urihttp://hdl.handle.net/10754/668332
dc.description.abstractVanadium dioxide (VO2) has emerged as a promising micro-actuator material for its large amplitude and high work density across the transition between the insulating (M1 and M2) and metallic (R) phase. Even though M2–R transition offers about 70% higher transformation stress than M1–R structural phase transition, the application of the M2 phase in the micro-actuators is hindered by the fact that previously, M2 phase can only stay stable under tensile stress. In this work, we propose and verify that by synthesizing the VO2 nanowires under optimized oxygen-rich conditions, stoichiometry change can be introduced into the nanowires (NWs) which in turn yield a large number free-standing single-crystalline M2-phase NWs stable at room temperature. In addition, we demonstrate that the output stress of the M2-phase NWs is about 65% higher than that of the M1-phase NWs during their transition to R phase, quite close to the theoretical prediction. Our findings open new avenues towards enhancing the performance of VO2-based actuators by using M2–R transition. [Figure not available: see fulltext.].
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation of China (Nos. 52031011, 91860109, 51927801, and 51621063), the National Key Research and Development Program of China (Nos. 2017YFB0702001 and 2016YFB0700404), 111 Project 2.0 of China (No. BP2018008), and funding from the Science and Technology Departments of Shaanxi and Xi’an, China (Nos. 2016KTZDGY-04-03, 2016KTZDGY-04-04, and 201805064ZD15CG48). The authors appreciate the helpful discussions and suggestions from Prof. Evan Ma from John Hopkins University (JHU). Y. Q. Z. acknowledges King Abdullah University of Science & Technology (KAUST) to support his six-months research and study at KAUST as an exchange student. We also appreciate the support from the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies, and the Collaborative Innovation Center of High-End Manufacturing Equipment at Xi’an Jiaotong University, China. J. L. acknowledges support by National Science Foundation (No. CMMI-1922206). Authors declare no competing interests.
dc.publisherSpringer Nature
dc.relation.urlhttp://link.springer.com/10.1007/s12274-021-3355-6
dc.rightsArchived with thanks to Nano Research
dc.titleAchieving room-temperature M2-phase VO2 nanowires for superior thermal actuation
dc.typeArticle
dc.contributor.departmentSurface Science
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalNano Research
dc.rights.embargodate2022-03-24
dc.eprint.versionPost-print
dc.contributor.institutionCenter for Advancing Materials Performance from the Nanoscale, State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, 710049, China
dc.contributor.institutionDepartments of Nuclear Science and Engineering and Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
kaust.personHedhili, Mohamed N.
kaust.personZhang, Xixiang
dc.date.accepted2021-01-21
dc.identifier.eid2-s2.0-85102870491
dc.date.published-online2021-03-24
dc.date.published-print2021-11


Files in this item

Thumbnail
Name:
Nano Research-ZW Shan.pdf
Size:
1.956Mb
Format:
PDF
Description:
Accepted Manuscript
Embargo End Date:
2022-03-24

This item appears in the following Collection(s)

Show simple item record