I doubt it will ever be available as flocking
paper:
"A[n] ... electroless nickel process ... is used to plate ... a nickel-phosphorus alloy. ... [A] finely controlled etching procedure ... is largely responsible for the very low reflectance of the surface."
It only sounds suitable for rigid solids, probably
metals (though you mght be able to put the nickel-phosphorus alloy on plastic or glass).
paper:
"A[n] ... electroless nickel process ... is used to plate ... a nickel-phosphorus alloy. ... [A] finely controlled etching procedure ... is largely responsible for the very low reflectance of the surface."
It only sounds suitable for rigid solids, probably
metals (though you mght be able to put the nickel-phosphorus alloy on plastic or glass).