• 文献标题:   Laser-Induced Graphene Strain Sensors Produced by Ultraviolet Irradiation of Polyimide
  • 文献类型:   Article
  • 作  者:   CARVALHO AF, FERNANDES AJS, LEITAO C, DEUERMEIER J, MARQUES AC, MARTINS R, FORTUNATO E, COSTA FM
  • 作者关键词:   kapton, laserinduced graphene, strain sensor, uv laser
  • 出版物名称:   ADVANCED FUNCTIONAL MATERIALS
  • ISSN:   1616-301X EI 1616-3028
  • 通讯作者地址:   Univ Aveiro
  • 被引频次:   13
  • DOI:   10.1002/adfm.201805271
  • 出版年:   2018

▎ 摘  要

Laser-induced graphene (LIG) can be obtained by irradiation of a polymer by a laser source. The present work demonstrates that it is possible to obtain this kind of material using an ultraviolet laser instead of the typical infrared source. Using this approach, a fourfold decrease in the penetration depth (5 mu m) is achieved, while the spatial resolution is doubled. Electromechanical strain LIG sensors are patterned in polyimide substrates with different thicknesses and their performance to strain, bending, and force inputs is measured. A low-cost arterial pulse wave monitor is built, exploring the high force sensitivity of the sensors produced on the thinner substrates.