physics

Hannu Häkkinen

Hannu Häkkinen 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 Hannu Häkkinen rather than just read about it. In short: Hannu Häkkinen (born 1962) is a Finnish physicist and professor of computational nanoscience at the University of Jyväskylä. Education and career Hannu Häkkinen studied physics at the University of Jyväskylä and received his master's degree in 1988.

Key takeaways

Hannu Häkkinen belongs to physics; place it in that map before memorising details.
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Reproduce the core statement of Hannu Häkkinen from memory before moving on to harder problems.

Reference excerpt

Hannu Häkkinen (born 1962) is a Finnish physicist and professor of computational nanoscience at the University of Jyväskylä.

Education and career Hannu Häkkinen studied physics at the University of Jyväskylä and received his master's degree in 1988. He earned his doctorate in 1991. Emil Aaltonen Foundation granted him the Young Researcher Award from his doctoral dissertation (Effective Medium Studies of Dislocations and Surfaces in FCC Metal). Häkkinen started his scientific career at the faculty of University of Jyväskylä. He has held there several teaching and research posts from 1987. After his graduation, Häkkinen worked as a post-doctoral fellow at the Georgia Institute of Technology, Atlanta from November 1992 to August 1994. Then he returned to Jyväskylä and worked as a senior teaching assistant at the university of Jyväskylä from 1994 to 1998. Between 1998 and 2003 he was again in the Georgia Institute of Technology, this time working as an academy researcher and a senior research scientist. From 2007 Häkkinen has been a professor of computational nanoscience in the University of Jyväskylä. The professorship is a joint position in Physics and Chemistry Departments. He was nominated the scientific director of the Nanoscience Center in the University of Jyväskylä in 2012. University of Jyväskylä is organizing the International Symposium on Small Particles and Inorganic Clusters (ISSPIC) in August 2016. Professor Häkkinen is the chairman of the conference. From 2016 to 2020 he is working as an academy professor at the Academy of Finland. He was awarded the Theodor Homén Prize in 2008 by the Finnish Society of Sciences and Letters.

Research Professor Häkkinen's special interests as a scientist are nanoscience and nanotechnology. Most of his work is related to the different types of nano-structures. He has studied electronic, optical, magnetic, chemical and catalytic properties of bare, supported, and ligand-protected metal nanoparticles. He has also done research with carbon nanotubes and graphene. Some of Häkkinen's work after 2010 was related to the structural and chemical properties of metal nanoparticle/bionanoparticle (virus) hybrids. Normally a virus is so small that observing it is quite impossible. Häkkinen developed a specific method in which he attached a self-made 1 to 3 nanometer sized gold particles onto the surface proteins of enteroviruses. The golden nanoparticles act as markers. After the operation the exact location of the viruses could be examined by electron beam imaging. The method made also possible to study the surface structure of the virus.

Publications Hannu Häkkinen has published (or has been a co-author in) nearly 200 scientific publications. Most of them have appeared in the notable series and journals of physics and chemistry (for example Journal of the American Chemical Society).

References

External links Homepage of Professor Häkkinen, University of Jyväskylä Publications Hannu Häkkinen's scientific articles ResearchGate.net

Worked examples

Example 1 — a first encounter with Hannu Häkkinen

Start with the simplest possible case. Write down what Hannu Häkkinen 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 Hannu Häkkinen 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 Hannu Häkkinen 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 Hannu Häkkinen

In research: Hannu Häkkinen 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 Hannu Häkkinen 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: Hannu Häkkinen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1962 births, Academic staff of the University of Jyväskylä, Finnish physicists, so understanding it makes those chapters shorter.
In everyday life: Look for Hannu Häkkinen 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 Hannu Häkkinen in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Hannu Häkkinen 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.
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Frequently asked questions

What is Hannu Häkkinen in simple terms?

Hannu Häkkinen (born 1962) is a Finnish physicist and professor of computational nanoscience at the University of Jyväskylä. Education and career Hannu Häkkinen studied physics at the University of Jyväskylä and received his master's degree in 1988.

Why does Hannu Häkkinen 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 Hannu Häkkinen?

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 Hannu Häkkinen.