Publication Date:
2009-02-21
Description:
Generating laterally ordered, ultradense, macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries. We used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains into oriented arrays with quasi-long-range crystalline order over arbitrarily large wafer surfaces. Ordered arrays of cylindrical microdomains 3 nanometers in diameter, with areal densities in excess of 10 terabits per square inch, were produced. The sawtoothed substrate topography provides directional guidance to the self-assembly of the block copolymer, which is tolerant of surface defects, such as dislocations. The lateral ordering and lattice orientation of the single-grain arrays of microdomains are maintained over the entire surface. The approach described is parallel, applicable to different substrates and block copolymers, and opens a versatile route toward ultrahigh-density systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Park, Soojin -- Lee, Dong Hyun -- Xu, Ji -- Kim, Bokyung -- Hong, Sung Woo -- Jeong, Unyong -- Xu, Ting -- Russell, Thomas P -- New York, N.Y. -- Science. 2009 Feb 20;323(5917):1030-3. doi: 10.1126/science.1168108.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19229031" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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