Using Open-Source, 3D Printable Optical Hardware To Enhance Student Learning in the Instrumental Analysis Laboratory
Using Open-Source, 3D Printable Optical Hardware To Enhance Student Learning in the Instrumental Analysis Laboratory
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DOI：
10.1021/acs.jchemed.7b00480
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发表时间：
2018-04-01
影响因子：
3
通讯作者：
Pauls, Steve
中科院分区：
文献类型：
--
作者：
Davis, Eric J.;Jones, Michael;Pauls, Steve
增材制造（3D打印）是一种对化学教育工作者来说具有近乎无限潜力的技术。然而，它在高等教育中的应用受到3D打印和3D计算机辅助设计（CAD）专业知识的双重要求的限制。因此，它在化学课程中的应用已经在分子模型和过程的宏观可视化的3D模型的创建内。随着廉价3D打印机的商业化，我们试图通过设计可以安装在试验板上并用于构建化学仪器的系统，提供一系列用于化学研究或教育的光学支架和工具。这些设计包括用于0.5、1和2英寸的柱面透镜或反射镜的底座。直径，0.5英寸衍射光栅、可调光学狭缝、比色皿支架、步进电机（NEMA 17）适配器和模块化3D打印试验板。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本地格式（*.SLDPRT）和3D对象的标准文件交换格式（*.STL）格式上传到https://github.com/EdavisAPU/Education-Optics，以供使用，修改或协作。所有文件都是在MIT开源许可证下发布的（针对设计进行了修改）。与市售产品相比，本文中提出的原型提供了显著的成本节约，许多设计比商业等同物便宜1-2个数量级。此外，这些设计已被利用在上师仪器分析课程的学生设计和建造了一个可见光分光光度计使用这些光学器件。所得到的仪器的数据，并与市售的分光光度计进行比较。
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.