High dynamic range cationic two-photon photopolymerization

Y. Boiko; J. M. Costa; M. Wang; S. Esener

doi:10.1117/12.429388

High dynamic range cationic two-photon photopolymerization

Y. Boiko, J. M. Costa, M. Wang, S. Esener

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Cationic-induced two-photon photopolymerization is demonstrated at 710 nm, using an isopropylthioxanthone / diarylidonium salt initiating system for the cationic polymerization of an epoxide. The polymerization threshold J_2th is found to be approximately 1 GW/cm², with a dynamic range of > 100, i.e. the material can be fully polymerized at intensities > 100 times the threshold level without damage. The polymerization rate R is found to be proportional to the m=1.7 power of the intensity, or R = [C (J-J_2th)]^m = [C (J-J_2th)]^1.7, which implies a significantly stronger localization the photochemical response than that of free radical photoinitiators. R and J_2th significantly improve when the concentration z of the initiator (onium salt) increases.

Original language	English (US)
Pages (from-to)	212-220
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4279
DOIs	https://doi.org/10.1117/12.429388
State	Published - 2001
Externally published	Yes
Event	Organic Photonic Materials and Devices III - San Jose, CA, United States Duration: Jan 24 2001 → Jan 25 2001

Keywords

Cationic
Free radical
Microfabrication
Photopolymerization
Threshold
Two-photon absorption

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.429388

Cite this

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title = "High dynamic range cationic two-photon photopolymerization",

abstract = "Cationic-induced two-photon photopolymerization is demonstrated at 710 nm, using an isopropylthioxanthone / diarylidonium salt initiating system for the cationic polymerization of an epoxide. The polymerization threshold J2th is found to be approximately 1 GW/cm2, with a dynamic range of > 100, i.e. the material can be fully polymerized at intensities > 100 times the threshold level without damage. The polymerization rate R is found to be proportional to the m=1.7 power of the intensity, or R = [C (J-J2th)]m = [C (J-J2th)]1.7, which implies a significantly stronger localization the photochemical response than that of free radical photoinitiators. R and J2th significantly improve when the concentration z of the initiator (onium salt) increases.",

keywords = "Cationic, Free radical, Microfabrication, Photopolymerization, Threshold, Two-photon absorption",

author = "Y. Boiko and Costa, {J. M.} and M. Wang and S. Esener",

year = "2001",

doi = "10.1117/12.429388",

language = "English (US)",

volume = "4279",

pages = "212--220",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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publisher = "SPIE",

note = "Organic Photonic Materials and Devices III ; Conference date: 24-01-2001 Through 25-01-2001",

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TY - JOUR

T1 - High dynamic range cationic two-photon photopolymerization

AU - Boiko, Y.

AU - Costa, J. M.

AU - Wang, M.

AU - Esener, S.

PY - 2001

Y1 - 2001

N2 - Cationic-induced two-photon photopolymerization is demonstrated at 710 nm, using an isopropylthioxanthone / diarylidonium salt initiating system for the cationic polymerization of an epoxide. The polymerization threshold J2th is found to be approximately 1 GW/cm2, with a dynamic range of > 100, i.e. the material can be fully polymerized at intensities > 100 times the threshold level without damage. The polymerization rate R is found to be proportional to the m=1.7 power of the intensity, or R = [C (J-J2th)]m = [C (J-J2th)]1.7, which implies a significantly stronger localization the photochemical response than that of free radical photoinitiators. R and J2th significantly improve when the concentration z of the initiator (onium salt) increases.

AB - Cationic-induced two-photon photopolymerization is demonstrated at 710 nm, using an isopropylthioxanthone / diarylidonium salt initiating system for the cationic polymerization of an epoxide. The polymerization threshold J2th is found to be approximately 1 GW/cm2, with a dynamic range of > 100, i.e. the material can be fully polymerized at intensities > 100 times the threshold level without damage. The polymerization rate R is found to be proportional to the m=1.7 power of the intensity, or R = [C (J-J2th)]m = [C (J-J2th)]1.7, which implies a significantly stronger localization the photochemical response than that of free radical photoinitiators. R and J2th significantly improve when the concentration z of the initiator (onium salt) increases.

KW - Cationic

KW - Free radical

KW - Microfabrication

KW - Photopolymerization

KW - Threshold

KW - Two-photon absorption

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DO - 10.1117/12.429388

M3 - Conference article

AN - SCOPUS:0034878447

SN - 0277-786X

VL - 4279

SP - 212

EP - 220

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Organic Photonic Materials and Devices III

Y2 - 24 January 2001 through 25 January 2001

ER -

High dynamic range cationic two-photon photopolymerization

Abstract

Keywords

ASJC Scopus subject areas

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