astronomy

Nadrian Seeman

Nadrian Seeman 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 Nadrian Seeman rather than just read about it. In short: Nadrian C. "Ned" Seeman (December 16, 1945 – November 16, 2021) was an American nanotechnologist and crystallographer known for inventing the field of DNA nanotechnology. Biography Seeman studied biochemistry at the University of Chicago and crystallography at the University of Pittsburgh.

Key takeaways

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

Reference excerpt

Nadrian C. "Ned" Seeman (December 16, 1945 – November 16, 2021) was an American nanotechnologist and crystallographer known for inventing the field of DNA nanotechnology.

Biography Seeman studied biochemistry at the University of Chicago and crystallography at the University of Pittsburgh. He was a postdoctoral researcher with Alexander Rich at MIT. He became a faculty member at the State University of New York at Albany, and in 1988 moved to the Department of Chemistry at New York University. He is most noted for his development of the concept of DNA nanotechnology beginning in the early 1980s. In fall 1980, while at a campus pub, Seeman was inspired by the M. C. Escher woodcut Depth to realize that a three-dimensional lattice could be constructed from DNA. He realized that this could be used to orient target molecules, simplifying their crystallographic study by eliminating the difficult process of obtaining pure crystals. In pursuit of this goal, Seeman's laboratory published the synthesis of the first three-dimensional nanoscale object, a cube made of DNA, in 1991. This work won the 1995 Feynman Prize in Nanotechnology. The concept of the dissimilar double DNA crossover introduced by Seeman, was important stepping stone towards the development of DNA origami. The goal of demonstrating designed three-dimensional DNA crystals was achieved by Seeman in 2009, nearly thirty years after his original elucidation of the idea. The concepts of DNA nanotechnology later found further applications in DNA computing, DNA nanorobotics, and self-assembly of nanoelectronics. He shared the Kavli Prize in Nanoscience 2010 with Donald Eigler “for their development of unprecedented methods to control matter on the nanoscale.” He was a fellow of the Norwegian Academy of Science and Letters. He was an atheist. Seeman died on November 16, 2021, at the age of 75.

Notable publications Seeman, N (1982). "Nucleic acid junctions and lattices". Journal of Theoretical Biology. 99 (2): 237–47. Bibcode:1982JThBi..99..237S. doi:10.1016/0022-5193(82)90002-9. PMID 6188926.—Considered to be the earliest paper outlining the concepts of DNA nanotechnology Chen, Junghuei; Seeman, Nadrian C. (1991). "Synthesis from DNA of a molecule with the connectivity of a cube". Nature. 350 (6319): 631–3. Bibcode:1991Natur.350..631C. doi:10.1038/350631a0. PMID 2017259. S2CID 4347988.—The synthesis of the DNA cube Winfree, Erik; Liu, Furong; Wenzler, Lisa A.; Seeman, Nadrian C. (6 August 1998). "Design and self-assembly of two-dimensional DNA crystals". Nature. 394 (6693): 529–544. Bibcode:1998Natur.394..539W. doi:10.1038/28998. ISSN 0028-0836. PMID 9707114. S2CID 4385579.—The synthesis of two-dimensional periodic lattices of double crossover molecules Mao, Chengde; Sun, Weiqiong; Shen, Zhiyong; Seeman, Nadrian C. (14 January 1999). "A DNA Nanomechanical Device Based on the B-Z Transition". Nature. 397 (6715): 144–146. doi:10.1038/16437. ISSN 0028-0836. PMID 9923675. S2CID 4406177.—The first DNA-based nanomechanical device Seeman, Nadrian C. (June 2004). "Nanotechnology and the double helix". Scientific American. 290 (6): 64–75. Bibcode:2004SciAm.290f..64S. doi:10.1038/scientificamerican0604-64. PMID 15195395.—A popular science article explaining the field of DNA nanotechnology Zheng, Jianping; Birktoft, Jens J.; Chen, Yi; Wang, Tong; Sha, Ruojie; Constantinou, Pamela E.; Ginell, Stephan L.; Mao, Chengde; Seeman, Nadrian C. (2009). "From molecular to macroscopic via the rational design of a self-assembled 3D DNA crystal". Nature. 461 (7260): 74–7. Bibcode:2009Natur.461...74Z. doi:10.1038/nature08274. PMC 2764300. PMID 19727196.—The synthesis of three-dimensional periodic lattices of tensegrity triangle molecules Gu, Hongzhou; Chao, Jie; Xiao, Shou-Jun; Seeman, Nadrian C. (2010). "A proximity-based programmable DNA nanoscale assembly line". Nature. 465 (7295): 202–5. Bibcode:2010Natur.465..202G. doi:10.1038/nature09026. PMC 2872101. PMID 20463734.—A DNA-based molecular assembly line

Illustrations

Worked examples

Example 1 — a first encounter with Nadrian Seeman

Start with the simplest possible case. Write down what Nadrian Seeman 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 Nadrian Seeman 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 Nadrian Seeman 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 Nadrian Seeman

In research: Nadrian Seeman 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 Nadrian Seeman 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: Nadrian Seeman is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1945 births, 2021 deaths, American atheists, so understanding it makes those chapters shorter.
In everyday life: Look for Nadrian Seeman 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 Nadrian Seeman in 20 minutes

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

Frequently asked questions

What is Nadrian Seeman in simple terms?

Nadrian C. "Ned" Seeman (December 16, 1945 – November 16, 2021) was an American nanotechnologist and crystallographer known for inventing the field of DNA nanotechnology. Biography Seeman studied biochemistry at the University of Chicago and crystallography at the University of Pittsburgh.

Why does Nadrian Seeman 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 Nadrian Seeman?

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 Nadrian Seeman.