Improving spatial resolution of two-photon microfabrication by using photoinitiator with high initiating efficiency

Jin Feng Xing, Xian Zi Dong, Wei Qiang Chen, Xuan Ming Duan, Nobuyuki Takeyasu, Takuo Tanaka, Satoshi Kawata

Research output: Contribution to journalArticle

148 Citations (Scopus)

Abstract

The lateral spatial resolution (LSR) in two-photon induced polymerization was improved to 80 nm by using an anthracene derivative (9,10-bis-pentyloxy-2,7- bis[2-(4-dimethylamino-phenyl)-vinyl]anthracene (BPDPA)) as a highly sensitive and efficient photoinitiator. Photocurable resin containing 0.18 mol % BPDPA exhibited a low polymerization threshold of 0.64 mW at 800 nm. Theoretical calculations showed that the LSR can be increased by reducing the laser power, indicating that the LSR could be improved using more sensitive initiators in the future.

Original languageEnglish
Article number131106
JournalApplied Physics Letters
Volume90
Issue number13
DOIs
Publication statusPublished - Apr 8 2007
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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