Most everyone who has worked in an industrial setting is probably familiar with the lost wax process for fine detail casting of molten metal. Wiki has an entry.
Based on extending or commercializing the (presumed) concept which is shown in the Enculescu paper, there is very likely to be a version of lost wax which is adaptable to the dedicated manufacturing of a matrix of nickel nanotubes. This kind of matrix is probably even adaptable to mass production and robotics, to low cost. Caveat - this is not too different from the Haisch Moddell patent which IIRC has not produced any measurable gain. IOW - it was a failure. However, they were not looking at LENR so they may have missed the proper application the basic idea. For instance, cold wax sheet could be punctured by a laser array and a scanning mirror, so that millions of holes are the result - and then the resulting surface could be thinly plated, following which the wax is removed. Essentially that appears to be what has been done in the image. It could then be possible to leach out the phosphorus, which they did not do. This final result would be based on the demonstrated premise that typical electroless nickel plating fluid allows such fine levels of detail at the nanoscale. That is a surprise. The tubes could be hollow as well, as apparently happens in Enculescu's process - in the image below. Apparently very accurate control of the level of nickel deposited can be engineered - which would not only allow the plating fluid to enter a porous wax inverse mold, but also to allow the tubes to be hollow. http://www.science24.com/paper/11457 This is what seems to be a marvelous image of what can be done, in principal, with nickel nanotubes via electroless deposition. Perhaps a gram or two of this actual material should be tried in LENR, due to the possibility of entrapment of hydrogen in the tubes in one dimension, as we have discussed. Kevin or Fran may have already ordered the electroless nickel controller and plating fluid on eBay :-)
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