Threshold enhancement in two-photon photopolymerization

Yuri Boiko, M. Shane Bowen, Mark Wang, Joe Costa, Sadik Esener

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

It is demonstrated that threshold reduction of two-photon polymerization is achievable by means traditionally employed for sensitivity enhancement for single photon photoinitiation, such as heavy atom enhancement of intersystem crossing, electron donor agent, concentration increase of initiator. It is shown that measured threshold is in reverse proportion to square root of initiator concentration, whereas observed length of induction period exhibits reverse proportionality to the square of light intensity. Overall, experimentally observed threshold values of two-photon induced photopolymerization are effected by all intermediate stages of energy transformation in the photochemical sequences leading to photoinitiation, in particular, inter-system crossing of excited initiating molecules as well as by monomer reactivity.

Original languageEnglish (US)
Pages (from-to)254-263
Number of pages10
JournalUnknown Journal
Volume4097
StatePublished - 2000
Externally publishedYes

Fingerprint

Photopolymerization
Photons
initiators
thresholds
augmentation
photons
Polymerization
luminous intensity
proportion
induction
polymerization
reactivity
monomers
Monomers
Electrons
Light
Atoms
Molecules
sensitivity
atoms

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Boiko, Y., Bowen, M. S., Wang, M., Costa, J., & Esener, S. (2000). Threshold enhancement in two-photon photopolymerization. Unknown Journal, 4097, 254-263.

Threshold enhancement in two-photon photopolymerization. / Boiko, Yuri; Bowen, M. Shane; Wang, Mark; Costa, Joe; Esener, Sadik.

In: Unknown Journal, Vol. 4097, 2000, p. 254-263.

Research output: Contribution to journalArticle

Boiko, Y, Bowen, MS, Wang, M, Costa, J & Esener, S 2000, 'Threshold enhancement in two-photon photopolymerization', Unknown Journal, vol. 4097, pp. 254-263.
Boiko Y, Bowen MS, Wang M, Costa J, Esener S. Threshold enhancement in two-photon photopolymerization. Unknown Journal. 2000;4097:254-263.
Boiko, Yuri ; Bowen, M. Shane ; Wang, Mark ; Costa, Joe ; Esener, Sadik. / Threshold enhancement in two-photon photopolymerization. In: Unknown Journal. 2000 ; Vol. 4097. pp. 254-263.
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