Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/63848
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dc.contributorDepartment of Applied Physicsen_US
dc.creatorLi, Yen_US
dc.creatorHu, Zen_US
dc.creatorLin, Sen_US
dc.creatorLai, SKen_US
dc.creatorJi, Wen_US
dc.creatorLau, SPen_US
dc.date.accessioned2017-02-09T08:30:43Z-
dc.date.available2017-02-09T08:30:43Z-
dc.identifier.issn1616-301Xen_US
dc.identifier.urihttp://hdl.handle.net/10397/63848-
dc.language.isoenen_US
dc.publisherWiley-VCHen_US
dc.rights© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheimen_US
dc.rightsThis is the peer reviewed version of the following article: Li, Y., Hu, Z., Lin, S., Lai, S. K., Ji, W., & Lau, S. P. (2017). Giant anisotropic Raman response of encapsulated ultrathin black phosphorus by uniaxial strain. Advanced Functional Materials, 27(19), 1600986, which has been published in final form at https://doi.org/10.1002/adfm.201600986. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.en_US
dc.titleGiant anisotropic Raman response of encapsulated ultrathin black phosphorus by uniaxial strainen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume27en_US
dc.identifier.issue19en_US
dc.identifier.doi10.1002/adfm.201600986en_US
dcterms.abstractThe giant anisotropic Raman response of encapsulated ultrathin black phosphorus (BP) is reported by uniaxial strain. A modified bending technique is employed to apply precise uniaxial tensile strain along the zigzag or armchair direction of the ultrathin BP encapsulated by a layer of polymethyl methacrylate. The Raman shift rates of the A 1 g, B 2g, and A 2 g modes are significantly distinct for strain applied along different directions. For the strain applied along zigzag direction, the Raman shift rate of the B 2g mode can reach a remarkable value of ≈−11 cm−1/% strain. In addition, the Grüneisen parameter is as high as ≈2.5, which is the largest among all the reported common 2D materials. Density functional perturbation theory calculations are performed to understand the exceptional anisotropic strain response discovering that not only the bond lengths but also the bond angels are changed in the strained ultrathin BP, which lead to the giant anisotropic Raman response. Furthermore, an alternative method based entirely on the strained ultrathin BP and nonpolarized Raman spectroscopy is demonstrated to determine the crystallographic orientations of ultrathin BP. This work paves a way to study the strain-induced anisotropic electrical conductance and magnetotransport properties of BP.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationAdvanced functional materials, 18 May 2017, v. 27, no. 19, 1600986en_US
dcterms.isPartOfAdvanced functional materialsen_US
dcterms.issued2017-05-18-
dc.identifier.scopus2-s2.0-84978245698-
dc.identifier.eissn1616-3028en_US
dc.identifier.artn1600986en_US
dc.identifier.rosgroupid2015004020-
dc.description.ros2015-2016 > Academic research: refereed > Publication in refereed journalen_US
dc.description.validate202209 bckwen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberAP-0656, RGC-B2-0485-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextThe Hong Kong Polytechnic University , the Postdoctoral Science Foundation of China , Hong Kong Scholars Programen_US
dc.description.pubStatusPublisheden_US
dc.identifier.OPUS6659312-
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