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Nano-scale poling of polymer films

R. Castagna, A. Milner, J. Zyss, Y. Prior, Advanced Materials 25, 2234–2238 (2013).

Spots of second harmonic generation (SHG) are produced from nanopatterned sub-micrometer areas of nonlinear polymer media. Information is written by using a biased-AFM tip, a highly nonlinear polymer (poly(methyl metha-acrylate)-co-Disperse Red 1), and a novel “floating-tip nanolithography” (FTN) technique. Dipoles are oriented and aligned at the nanoscale under the biased-AFM tip, resulting in SHG production. The information is storable over weeks

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