physics

Hongxing Jiang

Hongxing Jiang 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 Hongxing Jiang rather than just read about it. In short: Hongxing Jiang (Chinese: 江红星) is a Chinese-American physicist and engineer working in the field of wide bandgap semiconductors and photonic devices. He is the original inventor of MicroLED.

Key takeaways

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

Reference excerpt

Hongxing Jiang (Chinese: 江红星) is a Chinese-American physicist and engineer working in the field of wide bandgap semiconductors and photonic devices. He is the original inventor of MicroLED. In 2000, the research team led by Hongxing Jiang and Jingyu Lin (Chinese: 林景瑜) at Kansas State University (KSU) realized the operation of the first MicroLED and passive driving MicroLED microdisplay. In 2009, he and his colleagues at III-N Technology, Inc. (3N) and Texas Tech University (TTU) patented and realized the first active driving high-resolution and video-capable microLED microdisplay in VGA format (640 x 480 pixels) via heterogeneous integration of MicroLED array with CMOS active-matrix driver and the work was published in the following years. The single-chip high-voltage DC/AC LEDs via on-chip integration of mini- and MicroLED arrays developed by their team in 2002 have been widely commercialized for general solid-state lighting and automobile headlights. Under the support of DARPA-MTO’s SUVOS, CMUVT, DUVAP, and VIGIL programs, their research team has contributed to the early developments of III-nitride deep UV emitters and detectors and InGaN energy devices in the United States. These include the development of the first deep UV picosecond time-resolved optical spectroscopy system (down to 195 nm) for characterizing ultrawide bandgap (UWBG) semiconductor materials, the first prediction and confirmation that Al-rich AlGaN deep UV emitters emit light in the transverse-magnetic (TM) mode, the demonstration of the first UV/blue photonic crystal LED (PC-LED), and AlN deep UV avalanche detectors with an ultrahigh specific detectivity. His team was also one of the first to determine the Mg acceptor energy level in AlN optically and electrically and to demonstrate the conductivity control in Al-rich AlGaN. Supported by ARPA-E, their research team has developed crystal growth technologies for producing thick epitaxial films (or quasi-bulk crystals) of hexagonal boron nitride (h-BN) UWBG semiconductor in large wafer sizes and realized h-BN thermal neutron detectors with a record high detection efficiency. While in graduate school at Syracuse University (SU), Hongxing Jiang and Jingyu Lin developed the first analytical formalism based on Newtonian gravitational force to describe the orbit of a star moving into and out of a galaxy and predicated the phenomenon of mass precession. This effect has been used by astrophysicists to constrain the abundance of dark matter in the Solar System and the Galactic Center.

Education He obtained PhD in physics in 1986 from Syracuse University under the guidance of Arnold Honig. He received his BS in physics in 1981 from Fudan University, China. He came to US for graduate studies through the CUSPEA program.

Career He has been working on III-nitride wide bandgap semiconductors since 1995. Currently, he is a co-director of the Nanophotonics Center and the inaugural Edward E. Whitacre Jr. endowed chair and Horn Distinguished Professor of Electrical & Computer Engineering within the Edward E. Whitacre Jr. College of Engineering at Texas Tech University (TTU). To be designated a Horn Professor is the highest honor received by a Texas Tech faculty member. In 2008, he relocated his research group to TTU from Kansas State University where he was a University Distinguished Professor of Physics.

Awards Recipient of “Global SSL Award of Outstanding Achievements” 2021 for his invention of microLED, awarded by the International SSL (Solid-State Lighting) Alliance (ISA) Elected Fellow of the National Academy of Inventors for the invention and development of microLED, 2018 Fellow of the American Association for the Advancement of Science, 2016 Fellow of SPIE - the international society for optics and photonics, 2015 Fellow of the Optical Society of America, 2014 Fellow of the American Physical Society, 2010

References

Illustrations

Worked examples

Example 1 — a first encounter with Hongxing Jiang

Start with the simplest possible case. Write down what Hongxing Jiang 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 Hongxing Jiang 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 Hongxing Jiang 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 Hongxing Jiang

In research: Hongxing Jiang 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 Hongxing Jiang 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: Hongxing Jiang is common in secondary-school and first-year university syllabi. It links to neighbouring topics 20th-century American medical doctors, 20th-century Chinese physicists, 21st-century American physicists, so understanding it makes those chapters shorter.
In everyday life: Look for Hongxing Jiang 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.

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How to study Hongxing Jiang in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Hongxing Jiang 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 Hongxing Jiang out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hongxing Jiang in simple terms?

Hongxing Jiang (Chinese: 江红星) is a Chinese-American physicist and engineer working in the field of wide bandgap semiconductors and photonic devices. He is the original inventor of MicroLED.

Why does Hongxing Jiang 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 Hongxing Jiang?

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 Hongxing Jiang.