Micha Asscher.

• Localización: Scientific American, ISSN 0036-8733, Vol. 291, Nº. 6, 2004, págs. 49-49
• Idioma: inglés
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• Resumen

  • Focuses on the methods developed by Micha Asscher, a chemist at the Hebrew University of Jerusalem, to facilitate the construction of nanostructures with incompatable substances. Assembling wires and other intricate structures on any surface can prove tricky because not all materials combine well. Conversely, pairs of materials that interact strongly can bond too tightly to weave into sophisticated patterns. In May, Micha Asscher and his colleagues revealed a way to lay down a pattern of almost any substance on any other for novel nanometer scale devices such as those used in microelectronics and catalysts. Their method deposits a layer of inert xenon--supercooled to a solid at roughly-250 degrees Celsius-between two substances. When this sandwich is heated, the xenon evaporates and the bottom layer absorbs the top one. The researchers say their method could make conducting wires less than 30 nanometers wide yet millimeters long.