physics

Hiromichi Kataura

Hiromichi Kataura 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 Hiromichi Kataura rather than just read about it. In short: Hiromichi Kataura (片浦弘道, Kataura Hiromichi) is a Japanese scientist known for his work on synthesis and characterization of single-wall and double-wall carbon nanotubes and on encapsulation of water, fullerenes and other organic molecules into carbon nanotubes. Kataura is the leader of self-assembled nano-electronics group at the National Institute of Advanced Industrial Science and Technology (AIST).

Key takeaways

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

Reference excerpt

Hiromichi Kataura (片浦弘道, Kataura Hiromichi) is a Japanese scientist known for his work on synthesis and characterization of single-wall and double-wall carbon nanotubes and on encapsulation of water, fullerenes and other organic molecules into carbon nanotubes. Kataura is the leader of self-assembled nano-electronics group at the National Institute of Advanced Industrial Science and Technology (AIST).

Kataura plot

Kataura plot is a graph relating the energy of the band gaps in a carbon nanotube and its diameter. A nanotube of certain diameter can be metallic M or semiconducting S; it can have several band gaps, conventionally labeled as S11, S22, M11, M22, etc. This property results in multiple branches in the Kataura plot. The original article on the Kataura plot has been reported in a lesser-known journal Synthetic Metals. Nevertheless, this article has been cited more than 1900 times in peer-reviewed scientific journals between 2000 and January 2020.

References

External links Official website Prof. Shigeo Maruyama - Kataura plot calculations

Illustrations

Worked examples

Example 1 — a first encounter with Hiromichi Kataura

Start with the simplest possible case. Write down what Hiromichi Kataura 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 Hiromichi Kataura 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 Hiromichi Kataura 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 Hiromichi Kataura

In research: Hiromichi Kataura 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 Hiromichi Kataura 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: Hiromichi Kataura is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1959 births, Japanese nanotechnologists, Japanese physicists, so understanding it makes those chapters shorter.
In everyday life: Look for Hiromichi Kataura 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 Hiromichi Kataura in 20 minutes

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

Frequently asked questions

What is Hiromichi Kataura in simple terms?

Why does Hiromichi Kataura 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 Hiromichi Kataura?

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 Hiromichi Kataura.