physics

Li Aizhen

Li Aizhen is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Li Aizhen rather than just read about it. In short: Li Aizhen (Chinese: 李爱珍; born May 1936) is a Chinese scientist at the Chinese Academy of Sciences Shanghai Institute of Microsystem and Information Technology (Chinese: 中国科学院上海微系统与信息技术研究所). An expert in semiconductor material, she was elected a foreign associate of the United States National Academy of Sciences in 2007.

Key takeaways

Li Aizhen belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Li Aizhen to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Li Aizhen from memory before moving on to harder problems.

Reference excerpt

Li Aizhen (Chinese: 李爱珍; born May 1936) is a Chinese scientist at the Chinese Academy of Sciences Shanghai Institute of Microsystem and Information Technology (Chinese: 中国科学院上海微系统与信息技术研究所). An expert in semiconductor material, she was elected a foreign associate of the United States National Academy of Sciences in 2007.

Biography Born in Guangbian Village, Yongning Town, Shishi, Fujian Province, Li graduated from Quanzhou First High School in 1954, and entered Fudan University to study chemistry. She started her research career at Shanghai Institute of Metallurgy of CAS—now Shanghai Institute of Microsystem and Information Technology—in 1958. From August 1980 to October 1982, Li was a visiting scholar at department of electronic engineering of Carnegie-Mellon University in the United States. During her stay in the States, she visited Bell Labs and met with Alfred Y. Cho, the "father of molecular beam epitaxy". On May 1, 2007, Li was elected a foreign associate of the United States National Academy of Sciences (NAS), thus became the first female Chinese scientist to receive this honor. As of 2018 Li has not been admitted into the Chinese Academy of Sciences (CAS), and is the only non-academician from China who has been elected into the NAS as a foreign associate. She is also a recipient of the 2004 Academy of Sciences for the Developing World (TWAS) Prize in Engineering Sciences.

Contributions Li has made substantial contributions to the development of electronic devices and laser technology.

Honours and awards 2003 Member of the Asia Pacific Academy of Materials (APAM) 2004 Academy of Sciences for the Developing World (TWAS) Prize in Engineering Sciences May 2007 Foreign associate of the National Academy of Sciences (NAS)

References

Worked examples

Example 1 — a first encounter with Li Aizhen

Start with the simplest possible case. Write down what Li Aizhen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Li Aizhen before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Li Aizhen ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Li Aizhen

In research: Li Aizhen appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Li Aizhen in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Li Aizhen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1936 births, Chinese women physicists, Fudan University alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Li Aizhen outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Li Aizhen” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Li Aizhen in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Li Aizhen means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Li Aizhen out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Li Aizhen in simple terms?

Why does Li Aizhen matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Li Aizhen?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Li Aizhen.