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European Microscopy Congress 2016: Proceedings || Visualization of GFP mouse embryos and embryonic hearts using various tissue clearing methods and 3D imaging modalities
摘要： The paper discusses the use of various imaging and microscopy techniques for the study of materials, focusing on the visualization of clear and stained specimens. It details the application of these methods in identifying and analyzing the structural and compositional characteristics of materials, with a particular emphasis on their utility in materials science and engineering.
关键词： imaging,materials science,visualization,stained specimens,microscopy
更新于2025-09-10 09:29:36
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Exploring the Gel State: Optical Determination of Gelation Times and Transport Properties of Gels with an Inexpensive 3D-Printed Spectrophotometer
摘要： The study of gels and their properties is a compelling topic both technologically and scienti?cally, and should therefore be emphasized in chemistry and material science syllabuses. In the present laboratory experiment, we propose two experiences, aimed at introducing gelation and gel transport properties using silica gels made from sodium silicate and sodium citrate bu?er. In particular, gelation times are used to teach kinetics and optical properties to ?rst and second year General Chemistry students. Gelation times are determined by measuring the increment in scattering intensity with a 3D-printed spectrophotometer. The gel transport properties are presented to further exemplify Fickian and non-Fickian behavior through ionic dyes di?using in gels. A qualitative description is obtained from charge interactions, and a quantitative description utilizing the di?usion coe?cient is achieved by analyzing absorbance pro?les. These tasks were designed to encourage students to work with unusual topics in a holistic way, approaching new materials, properties, and DIY equipment. Blueprints for the spectrophotometer, resources for instructors, and a detailed students’ guide are provided together with a short report model to promote critical discussion of the observations.
关键词： Transport Properties,Physical Chemistry,Materials Science,Second-Year Undergraduate,Hands-On Learning/Manipulatives,First-Year Undergraduate/General
更新于2025-09-09 09:28:46