關於此課程：This course is a continuation of Electrodynamics: An Introduction. Here, we will cover different methods of calculating an electric field. In addition, we will introduce polarization, dielectrics, and how electric fields create dipoles. Learners will • Be able to apply symmetry and other tools to calculate the electric field. • Understand what susceptibility, polarization, and dipoles are. Additionally, students will learn to visualize Maxwell equations in order to apply the derived mathematics to other fields, such as heat/mass diffusion and meso-scale electromechanical properties, and to create patents that could lead to potential innovations in energy storage and harvesting. The approach taken in this course complements traditional approaches, covering a fairly complete treatment of the physics of electricity and magnetism, and adds Feynman’s unique and vital approach to grasping a picture of the physical universe. Furthermore, this course uniquely provides the link between the knowledge of electrodynamics and its practical applications to research in materials science, information technology, electrical engineering, chemistry, chemical engineering, energy storage, energy harvesting, and other materials related fields.
此課程適用人群：This course is primarily for people who have completed the first course (Electrodynamics, an introduction), which was aimed at third- and fourth-year undergraduates with background of materials science and engineering as well as chemical engineering. It is also for graduate students, gifted independent students, and professionals with an interest in electrodynamics and its applications.
製作方： Korea Advanced Institute of Science and Technology
教學方： Seungbum Hong, Associate Professor
Materials Science and Engineering
| 級別 | 高級設置 |
| 承諾學習時間 | 2-3 hours/week |
| 語言 | 英語（English） |
| 硬件要求 | N/A |
| 如何通過 | 通過所有計分作業以完成課程。 |
授課大綱
第 1 週
The Electric Field in Various Circumstances
The primary focus of the first portion of this module is the concept of dipole moments, both for a single molecule and an arbitrary distribution. The equations for both the potential and the electric field of a dipole are derived within the first part of the lecture. This lecture also describes the method of images and how it can be applied to solving the electric field from different geometries.
3 個視頻, 1 個閱讀材料
- 視頻: 1-1 Equations of the Electrostatic Potential
- 視頻: 1-2 The Dipole Approximation for an Arbitrary Distribution
- Reading: Lecture Slides (Week 1)
已評分: Week 1 Quiz
第 2 週
The Electric Field in Various Circumstances (cont'd)
In this module, we cover how to solve for 2D electric fields, and also introduce some basic applications for electrostatics. We describe how imaginary numbers can be used to plot the electric field and equipotential surfaces. Then, we discuss how concepts such as natural resonance, potential distribution, and grid spacing can help design modern devices and experiments.
2 個視頻, 1 個閱讀材料
- 視頻: 2-2 Colloidal Particles and Grid Fields
- Reading: Lecture Slides (Week 2)
已評分: Week 2 Quiz
第 3 週
Electrostatic Energy
This module introduces the importance of electrostatic energy and describes how to evaluate it. It also covers how to use the concept of virtual work and how that can be used to find force; specifically we examine this in respect to capacitors. Finally, we discuss where the electrostatic energy can be located.
2 個視頻, 1 個閱讀材料
- 視頻: 3-2 Energy in Ionic Crystals and Electrostatic Fields
- Reading: Lecture Slides (Week 3)
已評分: Week 3 Quiz
第 4 週
Introduction to Dielectrics
In the first module concerning dielectrics, we discuss what constitutes a dielectric material and how their presence effects the operation of a capacitor. Then, we cover many ways to characterize a dielectric such as susceptibility and displacement. Finally, we investigate the forces on a dielectric with respect to the capacitor.
2 個視頻, 1 個閱讀材料
- 視頻: 4-2 Nonuniform Dielectrics and Forces
- Reading: Lecture Slides (Week 4)
已評分: Week 4 Quiz
第 5 週
Dielectrics (cont'd)
This module starts by describing how to obtain polarization for molecules under an electric field. Then, we cover methods to solve for the dielectric constant, such as Clausius-Mossotti Equation and Onsager Equation. Our last topic covered is the concept of ferroelectricity and how ferroelectric materials can be modeled by the Curie-Weiss law and other methods.
3 個視頻, 1 個閱讀材料
- 視頻: 5-2 The Electric Field in Cavities and Solid Dielectrics
- Reading: Lecture Slides (Week 5)
- 視頻: Summary
已評分: Week 5 Quiz
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製作方
Korea Advanced Institute of Science and Technology
The Korea Advanced Institute of Science and Technology (KAIST) was established in 1971 by the Korean government as the nation’s first research-intensive graduate school for science, engineering and technology. It has now grown into one of the world’s best universities, delivering top notch education and research programs for undergraduate and graduate students. KAIST encourages interdisciplinary and convergent research across a wide spectrum of disciplines, as well as strong collaborations with industry and global institutions.
