We demonstrate a promising method of nanoscale domain engineering, which al
lows us to fabricate regular nanoscale domain patterns consisting of strict
ly oriented arrays of nanodomains (diameter down to 30 nm and density up to
100 mu m(-2)) in lithium niobate. We produce submicron domain patterns thr
ough multiplication of the domain spatial frequency as compared with the el
ectrode one. The fabrication techniques are based on controlled backswitche
d poling. (C) 2000 American Institute of Physics. [S0003-6951(00)01402-9].