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So far, the properties and mechanisms of TL remain not completely understood. The TL properties emitted during the sliding contact between Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> and SiO<jats:sub>2<\/jats:sub> surfaces were studied along different crystallographic orientations. In this study, the TL intensity of Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> was significantly enhanced as Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> surface was along a particular crystallographic orientation, which is an unconventional phenomenon. TL enhancement of Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> was not affected by air atmosphere and atomic stocking mode of Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub>. The enhancement mechanism of Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> may be influenced by the surface state of Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub>. This work provides a new method to control the intensity of TL and novel ideas to elucidate the TL mechanism.<\/jats:p>","DOI":"10.1038\/srep26324","type":"journal-article","created":{"date-parts":[[2016,5,20]],"date-time":"2016-05-20T20:15:34Z","timestamp":1463775334000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Triboluminescence dominated by crystallographic orientation"],"prefix":"10.1038","volume":"6","author":[{"given":"Kuifang","family":"Wang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liran","family":"Ma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuefeng","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shizhu","family":"Wen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianbin","family":"Luo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2016,5,19]]},"reference":[{"key":"BFsrep26324_CR1","doi-asserted-by":"publisher","first-page":"289","DOI":"10.1021\/ar50128a001","volume":"11","author":"JI Zink","year":"1978","unstructured":"Zink, J. 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