For purposes of comparison between silicon CD tips and our CNT tips, we can derive the same types of tip metrics from the design dimensions of the CNT tips. For the B-tip, the tip width is 2rB, the overhang is rB − d/2, and the VEH is rB, where rB is the radius of the ball and d is the diameter of the CNT shaft. For the J-tip, these dimensions are lt sin θt + d/2, lt sin θt − d/2, and d/2, respectively, where lt is the length of the bent portion of the CNT, θt is the angle of bending, and d is the diameter of the CNT shaft. For B-tips, a typical value of d is 40 nm, and a typical value of rB is 30 nm. For J-tips, a typical value of lt is 200 nm, and a typical value of θt is 30 deg.