Low-Toxicity Photopolymer for Reflection Holography

Abstract

A novel composition for a low-toxicity, water-soluble, holographic photopolymer capable of recording bright reflection gratings with diffraction efficiency of up to 50% is reported. The unique combination of two chemical components, namely, a chain transfer agent and a free radical scavenger, is reported to enhance the holographic recording ability of a diacetone acrylamide (DA)-based photopolymer in reflection mode by 3-fold. Characterization of the dependence of diffraction efficiency of the reflection gratings on spatial frequency, recording intensity, exposure energy, and recording wavelength has been carried out for the new low-toxicity material. The use of UV postexposure as a method of improving the stability of the photopolymer-based reflection holograms is reported. The ability of the modified DA photopolymer to record bright Denisyuk holograms which are viewable in different lighting conditions is demonstrated.

Printable ink lenses, diffusers, and 2D gratings

“…Photopolymer-based volumetric holograms are analogous to silver-halide chemistry, but it requires strict control over the photopolymer properties and stabilization of the interference patterns. 11 Photoresist-based surface holograms are limited in personalization due to the high cost of preparing the master hologram. 12 Master surface holograms can be created to emboss rainbow surface holograms; however, volumetric holograms cannot be replicated by this method.…”

Современное Состояние Разработки Светочувствительных Сред Для Голографии (Обзор)

“…Кроме того, оказалось, что глицерин повышает ста-бильность композиций и улучшает оптическое качество голограмм [38]. Регистрирующие среды этого типа обес-печивают получение отражательных голограмм с ДЭ, достигающей 50% [39].…”

Volume Holography: Novel Materials, Methods and Applications

“…Beyond the specific material characteristics, discussed in Section 2.1.1, there are additional requirements for the composition of novel biomedical material systems, such as biocompatibility and non-toxicity [53]. Investigations on cellular behavior on one-and two-dimensional surface topography may be used to evaluate cytotoxicity and cytocompatibility as a function of mechanical properties, such as the cross-linking degree.…”