September 3rd, 2007
Nano Dandelions
Abstract:
Under an electron microscope they look like dandelions. In the journal Angewandte Chemie, Xiao-Fang Shen and Xiu-Ping Yan explain their nanoscopic bouquets: They consist of spread-out bundles of nanowires made of lead and the amino acid l-cysteine. The Chinese researchers have discovered a new, cost-effective method by which ordered nanostructures can be produced on a large scale, at room temperature, and under atmospheric pressure.
The properties of nanomaterials are not determined exclusively by their chemical composition; other characteristics such as structure and morphology, as well as the form, size, and spatial distribution of the individual particles, also play a role. It is equally important for the construction of future nanocomponents that nanomaterials can be produced with controlled "architecture". For example, one-dimensional nanoobjects, known as nanowires, are needed for the (opto)electronics of the future and for the construction of superordinate structures.
Source:
innovations-report.de
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