Micro-fabrication of biodegradable polymers using focused ion beam

Satoshi Okubo*, Tomohiro Takahashi, Yuya Takasawa, Tomoko Gowa, Takashi Sasaki, Naotsugu Nagasawa, Masao Tamada, Akihiro Oshima, Seiichi Tagawa, Masakazu Washio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Microfabrication of biodegradable polymers such as poly(butylene succinate-co-adipate) (PBSA) and poly(Ε-caprolactone) (PCL) were demonstrated using focused ion beam (FIB) with maskless direct etching. As the result, the micro structures of PBSA and PCL were obtained. The etching depth of both PBSA and PCL were increased with increasing FIB fluence, and the etching rates were estimated to be about 1.3 x 10-18 μm/(ions cm-2) and 1.2 × 10-18 μm/(ions cm-2), respectively. Moreover, very thin films of PBSA and PCL were made by spin-coating method. The thicknesses of the spin-coated samples were about 200 nm, and the surface roughness was less than 10 nm (RMS). The fine structures such as micro-gear of PBSA and PCL were obtained without solid debris. The line width of the fabricated structure was about 250 nm.

Original languageEnglish
Pages (from-to)393-397
Number of pages5
JournalJournal of Photopolymer Science and Technology
Issue number3
Publication statusPublished - 2010


  • Biodegradable polymer
  • Focused ion beam (FIB), Maskless direct etching, Spin-coating, PBSA, PCL

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry


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