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Examination of the photoinitiation processes in photopolymer materials
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Image of FIG. 1.
FIG. 1.

Flow chart of the photoinitiation mechanisms present in our photopolymer material.

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FIG. 2.

Experimental setup used to monitor time varying transmittance curves.

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FIG. 3.

(a) Experimental data and nonlinear fit to a transmission curve, , using Eq. (20) with error bars indicating experimental reproducibility, and (b) the corresponding photosensitizer concentration, .

Image of FIG. 4.
FIG. 4.

Schematic of the experimental processes involved to determine the rate of recovery of photosensitizer after an exposure, .

Image of FIG. 5.
FIG. 5.

Theoretical fit to experimentally determined photosensitizer recovery concentration for three different exposure times: (solid line), (long dashed line), and (short dashed line).

Image of FIG. 6.
FIG. 6.

Schematic representation of the experiments carried to calculate the concentration of photosensitizer bleached per second of exposure.

Image of FIG. 7.
FIG. 7.

Concentration of bleached photosensitizer (dots) obtained experimentally as a function of exposure time and a best fit using Eq. (27) (solid line).


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Table I.

Parameter values extracted from fits to experimental transmittance curves for a range of material layer thicknesses. In all cases .

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Table II.

Parameter values estimated from transmittance curves for a range of intensities and constant layer thickness .

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Table III.

Extracted parameter values from fits to experimental determined photosensitizer recovery curves.

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Table IV.

Experimental results obtained for .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Examination of the photoinitiation processes in photopolymer materials