Mark, you are welcome. 
Grepper, you are correct, gold is the most malleable of all metals, 1 gram can be beaten into a sheet of 1 m².
I have used this analogy to demonstrate that burr-related phenomena may belong in the nanoscale domain, which means that at least one dimension should be smaller than 50 nm. Referring to Mike’s searching the width of the apex of a standard DE razor blade is about 100 nm (0.1 micron). Based on this figure I am convinced that many segments of the hanging burr, which are not firmly attached to edge, should be considered as nanoscale objects.
Matter behaves differently at nanoscale! Many parameters are significantly different from those of the bulk material. Hardness of metal can be several times larger when the grain size is reduced to nanoscale dimensions.
Nanoscale seems to be the key to so called "smart materials".
Jan
Grepper, you are correct, gold is the most malleable of all metals, 1 gram can be beaten into a sheet of 1 m².
I have used this analogy to demonstrate that burr-related phenomena may belong in the nanoscale domain, which means that at least one dimension should be smaller than 50 nm. Referring to Mike’s searching the width of the apex of a standard DE razor blade is about 100 nm (0.1 micron). Based on this figure I am convinced that many segments of the hanging burr, which are not firmly attached to edge, should be considered as nanoscale objects.
Matter behaves differently at nanoscale! Many parameters are significantly different from those of the bulk material. Hardness of metal can be several times larger when the grain size is reduced to nanoscale dimensions.
Nanoscale seems to be the key to so called "smart materials".
Jan