Fabrication of three-dimensional structures of resist by proton beam writing

Yusuke Furuta, Naoyuki Uchiya, Hiroyuki Nishikawa, Junji Haga, Takahiro Sato, Masakazu Oikawa, Yasuyuki Ishii, Tomihiro Kamiya

研究成果: Article査読

21 被引用数 (Scopus)


The fabrication of three-dimensional (3D) structures was demonstrated by proton beam writing (PBW) using a MeV light-ion microbeam system at Japan Atomic Energy Agency. The fabrication of the 3D structures was performed using PBW in a thick SU-8 layer with a thickness of up to 50 μm, which is a typical negative resist. The authors exposed the negative resist on a silicon substrate to focused MeV proton beams within 1 μm in diameter, using two different beam energies to obtain two different depths in the resist aiming at fabrication of 3D structures. The two different beam energies were obtained using a 75 μm Kapton film as a beam energy degrader to generate 1.6 MeV proton beam from 3.0 MeV, or using the accelerator voltage control in order to produce beam energy of 1.2 MeV. The 3D lines and space structures with the same shape were fabricated using the two different methods. An Arc de Triomphe shape was also manufactured to demonstrate the superior and unique features of the PBW as a versatile tool for deep micromachining for 3D structures with high aspect ratio.

ジャーナルJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
出版ステータスPublished - 2007

ASJC Scopus subject areas

  • 凝縮系物理学
  • 電子工学および電気工学


「Fabrication of three-dimensional structures of resist by proton beam writing」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。