• 文献标题:   Optically Forged Diffraction-Unlimited Ripples in Graphene
  • 文献类型:   Article
  • 作  者:   KOSKINEN P, KARPPINEN K, MYLLYPERKIO P, HILTUNEN VM, JOHANSSON A, PETTERSSON M
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF PHYSICAL CHEMISTRY LETTERS
  • ISSN:   1948-7185
  • 通讯作者地址:   Univ Jyvaskyla
  • 被引频次:   1
  • DOI:   10.1021/acs.jpclett.8b02461
  • 出版年:   2018

▎ 摘  要

In nanofabrication, just as in any other craft, the scale of spatial details is limited by the dimensions of the tool at hand. For example, the smallest details of direct laser writing with far-field light are set by the diffraction limit, which is approximately half of the used wavelength. In this work, we overcome this universal assertion by optically forging graphene ripples that show features with dimensions unlimited by diffraction. Thin sheet elasticity simulations suggest that the scaled-down ripples originate from the interplay between substrate adhesion, in-plane strain, and circular symmetry. The optical forging technique thus offers an accurate way to modify and shape 2D materials and facilitates the creation of controllable nanostructures for plasmonics, resonators, and nano optics.