We use 4,4’ azo-bis-(4-cyanopentanoic acid) as chain transfer agent in a photopolymer with triethanolamine/yellowish eosin as initiator system. It is possible to work in a particular conditions to get a chain transfer effect minimizing the decomposition of 4,4’ azo-bis-(4-cyanopentanoic acid) by the sensitized dye. The improved photopolymer has a low scattering due to the low molecular weight o...

The development of suitable recording media for applications such as holographic optical elements and holographic data storage are of significant research and commercial interest. In this paper, a photopolymer material developed by Bayer MaterialScience is examined using various optical techniques and then characterised using the Non-local Photo-polymerization Driven Diffusion model. This mater...

A method for recording of holograms on spherical substrates is presented. As recording material we used a photopolymer placed between two spherical glass plates that are concentric.

A two-step method of writing high di raction efciency holographic gratings in photopolymer using just one writing beam during the second step is discussed. The technique is based on the use of weak gratings (<1%) recorded during a rst step which during the second step are illuminated with a single beam to form strong highly e cient holographic gratings. The weak grating provides a second interf...

Photopolymer Formulations In article number 2100094, Julian Thiele and coworkers describe a set of newly developed hydrophilic hydrophobic photopolymer formulations, processed by sophisticated example Digital Light Processing-based 3D printing to fabricate microfluidic flow cells with planar channel geometries that exhibit spatially tailored wetting behavior. The applicability these is exemplar...

A temperature-resistant organic phosphate with a photolabile o-nitrobenzyl protecting group is introduced in visible light curable thiol-click photopolymer, as reported by Sandra Schlögl, Thomas Griesser et al. their Communication (e202215525). The sequence-dependent λ-orthogonality of the curing and cleavage enables an efficient network formation at 451 nm, without premature release catalyst. ...

The number of layers of a micro-holographic disk is limited by wavefront aberration which is strongly dependent on the photopolymer initiation, termination and inhibition kinetics. 3D metrology is used to validate predicted index profiles.