Using Open-Source, 3D Printable Optical Hardware To Enhance Student Learning in the Instrumental Analysis Laboratory,Journal of Chemical Education

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Using Open-Source, 3D Printable Optical Hardware To Enhance Student Learning in the Instrumental Analysis Laboratory
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2018-02-09 00:00:00 , DOI: 10.1021/acs.jchemed.7b00480
Eric J. Davis ₁ , Michael Jones ₁ , D. Alex Thiel ₁ , Steve Pauls ₂

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Additive manufacturing (3D printing) is a technology with near-unlimited potential for the chemical educator. However, its adoption into higher education has been limited by the dual requirements of expertise in 3D printing and 3D computer-aided design (CAD). Thus, its reported utilization in the chemistry curriculum has been within the creation of 3D models for the macroscopic visualization of molecular models and processes. With the commercialization of inexpensive 3D printers, we seek to provide a series of optical mounts and tools for use in chemical research or education by designing systems which may be mounted on a breadboard and used to construct chemical instrumentation. These designs include mounts for cylindrical lenses or mirrors with 0.5, 1, and 2 in. diameters, 0.5 in. diffraction gratings, an adjustable optical slit, cuvette holders, stepper motor (NEMA 17) adapters, and a modular, 3D printed breadboard. All designs were created using Solidworks CAD, and have been provided in Supporting Information and uploaded to https://github.com/EdavisAPU/Education-Optics in both Solidworks native format (*.SLDPRT) and a standard file exchange format for 3D objects (*.STL) format for use, modification, or collaboration. All files are released under the MIT Open-Source license (modified for Design). In comparison with commercially available products, the prototypes presented herein provide significant cost-savings, with many designs 1–2 orders of magnitude cheaper than commercial equivalents. In addition, these designs have been utilized in an upper division instrumental analysis course as students designed and constructed a visible spectrophotometer using these optical devices. Data from the resultant instrument is presented and compared with a commercially available spectrophotometer.

中文翻译：

使用开源的3D可打印光学硬件在仪器分析实验室增强学生的学习

增材制造（3D打印）是化学教育工作者具有无限潜力的技术。但是，其在高等教育中的应用受到3D打印和3D计算机辅助设计（CAD）专业知识双重要求的限制。因此，据报道其在化学课程中的利用属于分子模型和过程的宏观可视化的3D模型的创建之内。随着廉价3D打印机的商业化，我们寻求通过设计可安装在面包板上并用于构造化学仪器的系统，提供一系列用于化学研究或教育的光学安装架和工具。这些设计包括用于直径为0.5、1和2英寸，衍射光栅为0.5英寸的柱面透镜或反射镜的安装座，可调节的光学狭缝，比色杯支架，步进电机（NEMA 17）适配器，以及模块化的3D打印面包板。所有设计都是使用Solidworks CAD创建的，并已在“支持信息”中提供，并以Solidworks本机格式（* .SLDPRT）和3D对象的标准文件交换格式上传到https://github.com/EdavisAPU/Education-Optics。（* .STL）格式以供使用，修改或协作。所有文件均根据MIT开源许可证（针对设计进行了修改）发布。与市售产品相比，本文介绍的原型可节省大量成本，并且许多设计都比市售同类产品便宜1-2个数量级。此外，随着学生使用这些光学设备设计和制造可见分光光度计，这些设计已被用于上层仪器分析课程。

更新日期：2018-02-09

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