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DNA-Directed Magnetic Network Formations with Ferromagnetic Nanoparticles

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We formed a DNA network embedding ferromagnetic cobalt nanoparticles with a 12-nm diameter through a nanoscale self-assembly of DNA molecules on large-scale mica surfaces (12 mm × 12 mm); we then confirmed its structural characteristics with an atomic force microscope. Moreover, noncontact magnetic force microscope measurement revealed that some embedded cobalt nanoparticles have different directions of magnetization, similar to "bits" in magnetic data storage devices.

Document Type: Short Communication


Affiliations: 1: Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan 2: Okada Shiko, Co. Ltd., 1-7-2 Ohori, Matsubara, Osaka 580-0006, Japan 3: Department of Chemistry, Yonsei University, Seoul 120-749, Korea 4: Department of Chemistry, Korea Advanced Institute of Science and Technology, Taejon, 305-701, Korea

Publication date: 2002-12-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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