A nanopatterned template for use in manufacturing nanoscale objects. The
nanopatterned template contains a nanoporous thin film with a
periodically ordered porous geomorphology which is made from a process
comprising the steps of: (a) using a block copolymerization process to
prepare a block copolymer comprising first and second polymer blocks, the
first and second polymer blocks being incompatible with each other; (b)
forming a thin film under conditions such that the first polymer blocks
form into a periodically ordered topology; and (c) selectively degrading
the first polymer blocks to cause the thin film to become a nanoporous
material with a periodically ordered porous geomorphology. In a preferred
embodiment, the block copolymer is poly(styrene)-poly(L-lactide)
(PS-PLLA) chiral block copolymer, the first polymer is poly(L-lactide),
and the second polymer is polystyrene. Experimental results show that the
first polymer blocks can be formed into a hexagonal cylindrical
geomorphology with its axis perpendicular to a surface of the thin film.
After hydrolysis to selectively degrade the first polymer blocks, a thin
film having a series of repeated nanoscale hexagonal-cylindrical channels
is obtained.