课程名称︰奈米电子导论 课程性质︰ 课程教师︰ 开课学院：电资学院 开课系所︰电机系 考试日期（年月日）︰2022/04/06 考试时限（分钟）：180 试题 : 1. (4 pts) Please list four basic fabrication processes that can be used in micro/nano fabrication. 2. (9 pts) Please briefly introduce the process of photolithography. 3. (4 pts) Please name two differences between "positive photoresist" and "negative photoresist". 4. (8 pts) Please give a general description of the instruments required to develop nanotechnology-based semiconductor technology? And the related fields of development? 请大致说明以半导体技术为基础的奈米科技其发展所需的仪器设备? 以 及相关发展的领域? 5. (9 pts) How is the energy band formed? (Describe the behavior of electrons.) In contrast, how is the quantum well formed? 为什麽会形成能带?请就电子的行为描述之,相对的量子井又是如何形成? 6.(5 pts) Which microcavity can be fabricated on a chip with potentially the highest quality factor Q? (a) microsphere, (b) microtoroid, (c) photonic crystal, (d) microdisk. 7. (4 pts) What kind of microcavities will have the highest enhancement of spontaneous emission? (a) high Q and large volume, (b) low Q and small volume, (c) high Q and small volume, (d) low Q and large volume. 8. (4 pts) At which temperature will it be possible to observe the quantum confinement effect in a semiconductor structure with feature size of 80 nm? (a) 4K, (b) 273K, (c) 500K, (d) 1000K. 9. (4 pts) Which of the following materials in general has the highest material gain? (a) bulk semiconductor, (b) quantum wells, (c) quantum wires, (d) quantum dots. 10. (3 pts) Please give THREE different self-emitting display technologies (自发光显示技术)。 11. (2 pts) Please give TWO different non-self-emitting display technologies (非自发光显示技术) 12. (4 pts) Many displays nowadays feature a specification of high resolution (高解析度), such as a 4K x 2K display or a 440 ppi display. Please explain what does 4K x 2K mean? What is the meaning of 440 ppi? (hint: angular or spatial resolution of human eyes/retina) 13. (4 pts) Please explain the meaning of "color gamut" (色域范围) and "gray level"(灰阶) that are often listed in the specifications of display products. 14. (2 pts) Usually for a display screen, at least tens of images/frames per second (i.e.,frame rate, 画面更新率) should be provided so that one can see a continuous, dynamic video presentation. Please briefly explain the reason/mechanism. 15. (2 pts) Please briefly explain the structure of the liquid crystal device (液 晶元件) and how it functions as an optical switch device in the liquid crystal displays (LCDs)? ================================试题结束================================ _ _ _ _ _ 6.-9.参考解答: (b)(c)(a)(d) --

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