摩擦發光

摩擦發光(英語:Triboluminescence)是將材料拉開、撕開、刮劃、壓碎或互相摩擦而發的現象(參見摩擦學)。這現象尚未完全了解,但似乎是由靜電荷分離又結合引起。術語來自希臘語τρίβειν(“摩擦”)和拉丁語lumen(光)。破開晶體和撕膠紙時可觀察到摩擦發光。

水楊酸尼古丁摩擦發光

例子编辑

普通材料编辑

石英摩擦發光

某些居家材料和物質可展示此特性:

  • 普通壓敏膠紙(“透明膠紙”)與膠紙卷分離的地方會發光。[1]蘇聯科學家在1953年觀察到在真空撕膠紙會發X光。[2]2008年,X光生成機制獲進一步研究。[3][4][5]類似的X光也可在金屬中觀察到。[6]
  • 在黑暗中打開用膠水黏着的信封可看到藍色閃光。[來源請求]
  • 破開糖晶體會產生微小電場分開正電荷和負電荷,電荷試圖結合時產生火花。Wint-O-Green Life Savers特別適合產生這種火花,因為冬青油(水楊酸甲酯)是熒光物,可將紫外綫轉化為藍光[7][8]

參見编辑

  1. ^ Sanderson, Katharine. Sticky tape generates X-rays. Nature. 22 October 2008: news.2008.1185. doi:10.1038/news.2008.1185. 
  2. ^ Karasev, V. V; Krotova, N. A; Deryagin, Boris Vladimirovich. A study of electron emission during the stripping a layer of a high polymer from glass in a vacuum. 1953. OCLC 1037003456. 
  3. ^ Camara, C. G.; Escobar, J. V.; Hird, J. R.; Putterman, S. J. Correlation between nanosecond X-ray flashes and stick-slip friction in peeling tape. Nature. 2008, 455 (7216): 1089–1092. Bibcode:2008Natur.455.1089C. S2CID 4372536. doi:10.1038/nature07378. 
  4. ^ Chang, Kenneth. Scotch Tape Unleashes X-Ray Power. The New York Times. 2008-10-23 [2017-02-25]. (原始内容存档于2017-09-30). 
  5. ^ Katherine Bourzac. X-Rays Made with Scotch Tape. Technology Review. 2008-10-23 [2012-10-09]. (原始内容存档于2012-05-14). 
  6. ^ Krishna, G N; Chowdhury, S.K.Roy; Biswas, A. X-Ray Emission during Rubbing of Metals (PDF). Tribology in Industry. 2014, 36 (3): 229–235. ProQuest 2555415391. 
  7. ^ Triboluminescence. (原始内容存档于2009-10-20). 
  8. ^ Triboluminescence. Sciencenews.org. 1997-05-17 [2012-10-09]. (原始内容存档于1997-06-26).