Since 1987 Struycken employed so-called flat parallel (colour) waves alongside the sine waves he was already using, which were three-dimensional in character. This is a principle in which a one-dimensional wave can endlessly propagate in a three-dimensional space in any given direction as a function of time and space.
In the TKN series, several moments in time have been laid over each other. The entire page sheet is filled with regularly placed, denely packed dots. They form lines and shapes that appear to move in all directions. The even distribution of the colours used ensures a lively moiré effect.