What you have is garter stitch, done as all knits or all purls. The back of a knit is a purl, the back of a purl is a knit, so it looks the same on both sides, whether you did them as purls or knits. The one picture where you were doing it in knit then switched to purls, with the gap is actually stockinette stitch for 3 rows. I'm not sure what you mean by wanting the sts perpendicular to the needle. What you're seeing parallel to the needle is the row of purl bumps. Maybe you mean you want them to be stockinette stitch with all the knits on one side and all the purls on the other side. To do that, you alternate a knit row with a purl row.
sue- knitting heretic