大学MOOC Explore the Materials——From an Atom to a Device(北京航空航天大学)1463730162 最新慕课完整章节测试答案
Chapter 1 Materials and Devices An Introduction
文章目录
- Chapter 1 Materials and Devices An Introduction
- Chapter 10. 2D materials
- Chapter 11. Flexible Electronics
- Chapter 3 Corrosion and Protection of Metallic Materials
- Chapter 4 Inorganic Non-metallic Materials
- Chapter 5. Polymer Materials
- Chapter 6. Magnetic Materials
- Chapter 8. Energy Materials and Devices
- Chapter 9. Advanced thermoelectric materials
- Final Exam
第一章测验
1、单选题：
The basic unit of materials is_____, which can bond directly together to form materials, or convert into ions, or assemble into molecules.
选项：
A: nucleus
B: electron
C: proton
D: atom
答案: 【 atom】
2、单选题：
Crystalline structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material. We often use ____to illustrate the 3D structure, which is an array of 'small boxes' infinitely repeating in three spatial directions.
选项：
A: unit cell
B: crystal lattice
C: grain
D: cuboid
答案: 【 crystal lattice】
3、单选题：
Atoms could be bonded in different patterns, we call them chemical bonds. The three main types of chemical bonds are metallic, ionic and ______bonds.
选项：
A: atomic
B: covalent
C: covalence
D: molecular
答案: 【 covalent】
4、多选题：
According to chemical composition, materials are usually classified as metals, __________, polymers and _________.
选项：
A: alloys
B: ceramics
C: inorganic
D: composites
答案: 【 ceramics;
composites】
5、填空题：
The sequence of different scales is macro, mini, meso, ______, nano and atomic.
答案: 【 micro】
Chapter 10. 2D materials
第十章测验
1、单选题：
Graphene can be peeled off by tape from bulk graphite, because the ___ force between the layers is pretty weak.
选项：
A: electrostatic force
B: van der Waals
C: covalent bond
D: ionic bond
答案: 【 van der Waals】
2、单选题：
_________is the most promising one to get large area and high-quality 2D materials for the applications of electronics.
选项：
A: Mechanical exfoliation
B: Intercalation and Selective etching
C: Hydrothermal
D: Chemical vapor deposition (CVD)
答案: 【 Chemical vapor deposition (CVD)】
3、多选题：
Compared to bulk materials and other nanomaterials, graphene has the following advantages: ______.
选项：
A: the thinnest materials
B: flexible and transparent
C: high ratio of surface atoms
D: quantum phenomena
答案: 【 the thinnest materials;
flexible and transparent;
high ratio of surface atoms;
quantum phenomena】
4、多选题：
Generally, there are two different strategies to get ultrathin 2D materials: ________method and _________ method.
选项：
A: top-down
B: top growth
C: bottom-up
D: bottom growth
答案: 【 top-down;
bottom-up】
5、多选题：
For 2D materials, the following methods have been developed as effective ones to tune their properties: ____________.
选项：
A: defects
B: doping or alloying
C: phase engineering
D: heterostructure
E: intercalation
答案: 【 defects;
doping or alloying;
phase engineering;
heterostructure;
intercalation】
6、判断题：
2D materials can be applied in semiconductors, quantum devices and energy devices.
选项：
A: 正确
B: 错误
答案: 【 正确】
Chapter 11. Flexible Electronics
第十一章测验
1、单选题：
In order to achieve both flexible and electroactive in materials and devices, one strategy is to integrate ____ with thin size onto flexible substrate.
选项：
A: electronics
B: semiconductors
C: metals
D: polymer
答案: 【 electronics 】
2、多选题：
To realize sensing functions, materials with energy conversion abilities are crucial fundamentals. Typical energy conversion phenomena in materials includes___________.
选项：
A: piezoelectric
B: pyroelectric
C: therm