• 文献标题:   Laser Writing Block Copolymer Self-Assembly on Graphene Light-Absorbing Layer
  • 文献类型:   Article
  • 作  者:   JIN HM, LEE SH, KIM JY, SON SW, KIM BH, LEE HK, MUN JH, CHA SK, KIM JS, NEALEY PF, LEE KJ, KIM SO
  • 作者关键词:   block copolymer, selfassembly, directed selfassembly, laser, graphene, photothermal effect
  • 出版物名称:   ACS NANO
  • ISSN:   1936-0851 EI 1936-086X
  • 通讯作者地址:   Korea Adv Inst Sci Technol
  • 被引频次:   51
  • DOI:   10.1021/acsnano.5b07511
  • 出版年:   2016

▎ 摘  要

Recent advance of high-power laser processing allows for rapid, continuous, area-selective material fabrication, typically represented by laser crystallization of silicon or oxides for display applications. Two-dimensional materials such as graphene exhibit remarkable physical properties and are under intensive development for the manufacture of flexible devices. Here we demonstrate an area-selective ultrafast nanofabrication method using low intensity infrared or visible laser irradiation to direct the self-assembly of block copolymer films into highly ordered manufacturing-relevant architectures at the scale below 12 nm. The fundamental principles underlying this light-induced nanofabrication mechanism include the self-assembly of block copolymers to proceed across the disorder order transition under large thermal gradients, and the use of chemically modified graphene films as a flexible and conformal light-absorbing layers for transparent, nonplanar, and mechanically flexible surfaces.