{"title":"从火花到火焰--分子压电材料的制备、器件的制作和压电效应的演示:一年级本科生的创新实验","authors":"Zhirui Li, Tongxv Qi, Jiayao Liu, Pijun Su, Zhengxiao Tang, Haixia Zhao*, Zhiqiang Dong, Yanping Ren*, Lasheng Long* and Lansun Zheng, ","doi":"10.1021/acs.jchemed.4c00113","DOIUrl":null,"url":null,"abstract":"<p >For the first-year undergraduates, electronegativity, molecular polarity, dipole moment, etc. are all relatively abstract concepts and have been covered in inorganic chemistry or general chemistry courses. In fact, the piezoelectric effect is the macroscopic expression of electric dipole moments and molecular polarity in solids, which is the ability to convert mechanical stress into electricity or vice versa. Based on recent research findings in molecular-based piezoelectric materials, we designed a laboratory experiment including the synthesis of molecular-based piezoelectric material N(CH<sub>3</sub>)<sub>4</sub>GaCl<sub>4</sub>, the fabrication of piezoelectric devices, and the demonstration of piezoelectric effects by illuminating LEDs in order to help the first-year undergraduates to understand these concepts. This experiment enhances students’ comprehension of relatively abstract concepts such as molecular polarity, dipole moment, and the piezoelectric effect. And this experiment not only bridges the gap between cutting-edge research and basic chemistry laboratory teaching but also effectively integrates fundamental principles, methods, and experimental skills related to the inorganic compound preparation and separation, piezoelectric effect generation, and piezoelectric device fabrication. It is a multidisciplinary experiment that covers chemistry, materials science, physics, and energy-related themes, fosters students’ interest in hands-on experimentation, and cultivates their ability to apply theoretical knowledge in practical circumstances. The experiment was carried out successfully in 1 round by 350 first-year undergraduates majoring in chemistry, chemical engineering, and materials science and engineering at Xiamen University and was well received by students and teachers.</p>","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"From Spark to Fire─Preparation of Molecular-Based Piezoelectric Material, Fabrication of Devices, and Demonstration of Piezoelectric Effect: An Innovative Experiment for First-Year Undergraduates\",\"authors\":\"Zhirui Li, Tongxv Qi, Jiayao Liu, Pijun Su, Zhengxiao Tang, Haixia Zhao*, Zhiqiang Dong, Yanping Ren*, Lasheng Long* and Lansun Zheng, \",\"doi\":\"10.1021/acs.jchemed.4c00113\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >For the first-year undergraduates, electronegativity, molecular polarity, dipole moment, etc. are all relatively abstract concepts and have been covered in inorganic chemistry or general chemistry courses. 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And this experiment not only bridges the gap between cutting-edge research and basic chemistry laboratory teaching but also effectively integrates fundamental principles, methods, and experimental skills related to the inorganic compound preparation and separation, piezoelectric effect generation, and piezoelectric device fabrication. It is a multidisciplinary experiment that covers chemistry, materials science, physics, and energy-related themes, fosters students’ interest in hands-on experimentation, and cultivates their ability to apply theoretical knowledge in practical circumstances. The experiment was carried out successfully in 1 round by 350 first-year undergraduates majoring in chemistry, chemical engineering, and materials science and engineering at Xiamen University and was well received by students and teachers.</p>\",\"PeriodicalId\":43,\"journal\":{\"name\":\"Journal of Chemical Education\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-06-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Chemical Education\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.jchemed.4c00113\",\"RegionNum\":3,\"RegionCategory\":\"教育学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical Education","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.jchemed.4c00113","RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
对于本科一年级的学生来说,电负性、分子极性、偶极矩等都是比较抽象的概念,在无机化学或普通化学课程中已经有所涉及。事实上,压电效应是电偶极矩和分子极性在固体中的宏观表现,是将机械应力转化为电能或反之亦然的能力。基于分子压电材料的最新研究成果,我们设计了一个实验,包括合成分子压电材料 N(CH3)4GaCl4、制作压电器件以及通过点亮 LED 演示压电效应,以帮助本科一年级学生理解这些概念。该实验增强了学生对分子极性、偶极矩和压电效应等相对抽象的概念的理解。本实验不仅在前沿研究和基础化学实验教学之间架起了一座桥梁,而且有效地整合了与无机化合物制备和分离、压电效应产生和压电器件制作相关的基本原理、方法和实验技能。该实验涉及化学、材料科学、物理学和能源相关主题,是一个多学科实验,培养了学生动手实验的兴趣,培养了学生在实际环境中应用理论知识的能力。该实验由厦门大学化学、化学工程、材料科学与工程等专业的 350 名一年级本科生参与,已成功进行了 1 轮,受到了师生们的一致好评。
From Spark to Fire─Preparation of Molecular-Based Piezoelectric Material, Fabrication of Devices, and Demonstration of Piezoelectric Effect: An Innovative Experiment for First-Year Undergraduates
For the first-year undergraduates, electronegativity, molecular polarity, dipole moment, etc. are all relatively abstract concepts and have been covered in inorganic chemistry or general chemistry courses. In fact, the piezoelectric effect is the macroscopic expression of electric dipole moments and molecular polarity in solids, which is the ability to convert mechanical stress into electricity or vice versa. Based on recent research findings in molecular-based piezoelectric materials, we designed a laboratory experiment including the synthesis of molecular-based piezoelectric material N(CH3)4GaCl4, the fabrication of piezoelectric devices, and the demonstration of piezoelectric effects by illuminating LEDs in order to help the first-year undergraduates to understand these concepts. This experiment enhances students’ comprehension of relatively abstract concepts such as molecular polarity, dipole moment, and the piezoelectric effect. And this experiment not only bridges the gap between cutting-edge research and basic chemistry laboratory teaching but also effectively integrates fundamental principles, methods, and experimental skills related to the inorganic compound preparation and separation, piezoelectric effect generation, and piezoelectric device fabrication. It is a multidisciplinary experiment that covers chemistry, materials science, physics, and energy-related themes, fosters students’ interest in hands-on experimentation, and cultivates their ability to apply theoretical knowledge in practical circumstances. The experiment was carried out successfully in 1 round by 350 first-year undergraduates majoring in chemistry, chemical engineering, and materials science and engineering at Xiamen University and was well received by students and teachers.
期刊介绍:
The Journal of Chemical Education is the official journal of the Division of Chemical Education of the American Chemical Society, co-published with the American Chemical Society Publications Division. Launched in 1924, the Journal of Chemical Education is the world’s premier chemical education journal. The Journal publishes peer-reviewed articles and related information as a resource to those in the field of chemical education and to those institutions that serve them. JCE typically addresses chemical content, activities, laboratory experiments, instructional methods, and pedagogies. The Journal serves as a means of communication among people across the world who are interested in the teaching and learning of chemistry. This includes instructors of chemistry from middle school through graduate school, professional staff who support these teaching activities, as well as some scientists in commerce, industry, and government.