Berramdane Kheloud, G Ramírez Manuel, Zezza Paola, Lucío María Isabel, Bañuls María-José, Maquieira Ángel, Morales-Vidal Marta, Beléndez Augusto, Pascual Inmaculada
I.U. Física Aplicada a las Ciencias y las Tecnologías Universidad de Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Spain.
Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain.
Polymers (Basel). 2022 May 20;14(10):2089. doi: 10.3390/polym14102089.
The storage of time-stable holographic gratings in hydrogel matrices when the material is immersed in aqueous media is a real challenge at present. The optimization of the storage stages of the holograms must be properly investigated to identify the most suitable development processes. For this reason, this work is focused on the study of the optimization of the washing stages of the hydrogels based on acrylamide and ,'-methylenebis(acrylamide) once unslanted transmission holograms have been stored. High-performance liquid chromatography and UV-visible measurements have been employed in our system to analyze the composition of the washing solutions. PBST and DMSO:HO are used as solvents in the washing stages. The diffraction efficiencies are measured during the washing stages and after the storing of the holograms during several days in PBST. Maximum diffraction efficiencies of 38 and 27.6% are reached when PBST and DMSO:HO are employed, respectively, for the washing process. Holograms show temporal stability after being stored immersed in PBST at 4 °C for 4 days.
当材料浸入水性介质中时，在水凝胶基质中存储时间稳定的全息光栅是目前一项实际挑战。必须对全息图存储阶段进行优化研究，以确定最合适的显影过程。因此，这项工作聚焦于研究基于丙烯酰胺和N,N'-亚甲基双丙烯酰胺的水凝胶在存储非倾斜透射全息图后洗涤阶段的优化。我们的系统采用高效液相色谱和紫外可见测量来分析洗涤溶液的成分。PBST和二甲基亚砜:水在洗涤阶段用作溶剂。在洗涤阶段以及全息图在PBST中存储数天后测量衍射效率。当分别使用PBST和二甲基亚砜:水进行洗涤过程时，最大衍射效率分别达到38%和27.6%。全息图在4℃下浸入PBST中存储4天后显示出时间稳定性。
