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Langmuir-Blodgett assembly of nanowires

Nanowires or nanotubes should have the ability to manipulate if they are to become practical electronic components. Researcher Yang of University of California proved that optical materials like zinc oxide can form nanowires to act as lasers, and he has succeeded in mating nanowires of different materials to create one-dimensional junctions akin to transistor junctions.
In the technique nanowires are floated on top of a liquid and then compressed to make the nanowires align and clump together tightly. This technique is called Langmuir-Blodgett assembly. Using this technique monolayer measuring 20 square centimeters in area was created. This could slip onto a flexible surface such as a plastic polymer. Each silver nanowire is about 50 nanometers across and 2-3 microns long with a pentagonal cross section and pyramidal tip. Monolayer can be layered into stacks of alternating semiconductor (silicon) and conductor (silver) to produce many types of devices.
With monolayer of metal and monolayer of semiconductor multilayer transfers can be done to get flexible devices and it can be stacked up to make flexible composites. The researchers say large-scale assembly process developed to assemble nanowires over a large area will have a significant impact in the nanoscience/technology field.

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