Atomic Scale Imaging Instrumentation: Hands On Visualization for Undergraduate Education

化学(12)使用扫描隧道显微镜和原子力显微镜在原子和分子水平上的可视化已成为过去十年来科学和技术中最重要的进步之一。虽然新化学教科书中原子成像技术的例子增强了学生对原子和分子的可视化，但缺乏贯穿整个课程的实验室经验阻碍了学习过程。作为最近校园对材料的广泛重视的一部分，我们正在将这一重要的新技术纳入整个本科化学课程，弥合课程作业和实验室之间的差距。为实现这一目标，正在根据指导性探究教学方法，为较低级别的化学课程创建三个实验室示范模块，并在较高级别的分析和无机/材料课程中创建四个动手实验室。在无机/材料实验室的成功经验的基础上，这种方法包括遵循验证式体验和更开放的问题供学生探索。在演示模块和动手实验中使用的样本类型被设计为使学生既体验到理想固体表面的原子排列的可视化，又体验到在表面和界面上附着组件。该项目主要从研究文献中改编了一些实验，以创建这些新的演示模块和动手实验室。通过与布鲁姆社区学院的合作，确保了新材料在两年制大学课程中的适用性，特别是作为化学技术课程中仪器分析的一部分。

Chemistry (12) Visualization at atomic and molecular levels using STM and AFM has become one of the most important advancements in science and technology in the last decade. While examples of atomic imaging techniques in new chemistry textbooks have enhanced students' visualization of atoms and molecules, the lack of laboratory experiences integrated across the curriculum has impeded the learning processes. As part of a recent campus wide emphasis on materials, we are building this important new technique into the entire undergraduate chemistry curriculum, bridging the gap between coursework and the laboratory. This is being achieved by creating three laboratory demonstration modules for lower level chemistry courses and four hands-on laboratories in upper level analytical and inorganic/materials courses based on the guided inquiry approach to education. Building on the successful experience on this campus in the inorganic/materials laboratory, this approach involves following a verification-type experience with a more open-ended question for students to explore. The types of samples used in the demonstration modules and in the hands-on experiments are designed so that students experience both the visualization of atomic arrangements of ideal solid surfaces, and also adlayer assemblies on surfaces and interfaces. This project adapts a number of experiments primarily from the research literature to create these new demonstration modules and hands-on laboratories. Through collaboration with Broome Community College, the applicability of the new materials to the two-year college curriculum is being assured, specifically for use as part of Instrumental Analysis in the Chemical Technology Program.