astronomy

Jürgen Rödel

Jürgen Rödel is a astronomy 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 Jürgen Rödel rather than just read about it. In short: Jürgen Rödel (born September 17, 1958 in Hof) is a German materials scientist and professor of non-metallic inorganic materials at the Technische Universität Darmstadt. He is particularly well known for his fundamental and pioneering work on the mechanical and functional properties of ceramics.

Key takeaways

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

Reference excerpt

Jürgen Rödel (born September 17, 1958 in Hof) is a German materials scientist and professor of non-metallic inorganic materials at the Technische Universität Darmstadt. He is particularly well known for his fundamental and pioneering work on the mechanical and functional properties of ceramics. This includes his research work on the sintering behaviour of ceramics and the development of lead-free piezoceramics. Until then, lead-free piezo materials were considered impossible. Through meticulous research, he found the first lead-free systems with "Giant" elongation. In 2008, he received the Gottfried Wilhelm Leibniz Prize, the highest award for German researchers, for his contributions to the development of ferroelectric functional ceramics, new lead-free piezoelectric ceramics and novel gradient materials.

Life From 1977 to 1983, Rödel studied materials science at the University of Erlangen and ceramics at the University of Leeds. Rödel received his diploma in materials science from the University of Erlangen. In 1988, he received his Ph.D. in materials science from the University of California, Berkeley. In 1992, he habilitated in materials science at the TU Hamburg-Harburg. Since 1994 he has been professor of non-metallic inorganic materials at the Technische Universität Darmstadt.

Work In 2019, Rödel has acquired the research grant Reinhart-Koselleck project funded by the German Research Foundation (DFG). It was the first time for the Technische Universität Darmstadt that the grant was brought to the university. With the support he is currently working on improving ceramics by disrupting their atomic structure. His team is concentrating on a type of crystal defect that, although trivial for metals, has so far seemed unthinkable for hard ceramics. The mechanical deformation of ceramics takes place under controlled pressure and temperature.

Publications Rödel, Jürgen; Jo, Wook; Seifert, Klaus T. P.; Anton, Eva-Maria; Granzow, Torsten; Damjanovic, Dragan (2009). "Perspective on the Development of Lead-free Piezoceramics". Journal of the American Ceramic Society. 92 (6). Wiley: 1153–1177. doi:10.1111/j.1551-2916.2009.03061.x. ISSN 0002-7820. Zhang, Shan-Tao; Kounga, Alain Brice; Aulbach, Emil; Ehrenberg, Helmut; Rödel, Jürgen (10 September 2007). "Giant strain in lead-free piezoceramics Bi0.5Na0.5TiO3–BaTiO3–K0.5Na0.5NbO3 system". Applied Physics Letters. 91 (11). AIP Publishing: 112906. Bibcode:2007ApPhL..91k2906Z. doi:10.1063/1.2783200. ISSN 0003-6951. Jo, Wook; Dittmer, Robert; Acosta, Matias; Zang, Jiadong; Groh, Claudia; Sapper, Eva; Wang, Ke; Rödel, Jürgen (27 May 2012). "Giant electric-field-induced strains in lead-free ceramics for actuator applications – status and perspective". Journal of Electroceramics. 29 (1). Springer Science and Business Media LLC: 71–93. doi:10.1007/s10832-012-9742-3. ISSN 1385-3449. S2CID 137408263.

Awards 1992: Heinz-Maier-Leibnitz-Preis 2003: Fellow of the American Ceramic Society 2008: Gottfried-Wilhelm-Leibniz-Preis 2013: Member of the German Academy of Science and Engineering (Acatech) 2016: IEEE Ferroelectrics Recognition Award 2018: Robert B. Sosman Award 2020: Fellow of the Materials Research Society

References

External links His Website at the Technische Universität Darmstadt

Worked examples

Example 1 — a first encounter with Jürgen Rödel

Start with the simplest possible case. Write down what Jürgen Rödel claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Jürgen Rödel 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 Jürgen Rödel 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 Jürgen Rödel

In research: Jürgen Rödel appears in astronomy 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 Jürgen Rödel 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: Jürgen Rödel is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1958 births, Academic staff of Technische Universität Darmstadt, Alumni of the University of Leeds, so understanding it makes those chapters shorter.
In everyday life: Look for Jürgen Rödel 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 Jürgen Rödel in 20 minutes

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

Frequently asked questions

What is Jürgen Rödel in simple terms?

Why does Jürgen Rödel matter?

Because it connects several astronomy 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 Jürgen Rödel?

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 Jürgen Rödel.