| 초록 |
In recent decades a great deal of research about photopolymers has been carried out in the field of holographic data storage owing to their great advantages: a relatively large refractive index modulation, high energetic sensitivity, low cost, and no need of post chemical treatment. In spite of these merits, photopolymers have still a fundamental problem that the original image is distorted by volume shrinkage that occurs during photopolymerization of the monomer. To overcome this problem, crosslinked matrix system based on epoxy resin would be beneficial to keep a good dimensional stability during photopolymerization. In connection with these, in this work, we introduce different epoxy monomer and amine hardener with longer chain length from the one previously used, which is expected to reduce the crosslinking density of matrix and thereby enhance energetic sensitivity. |
