We describe a position sensor comprising drive electronics to drive a first tuned resonant circuit at a resonant frequency, a moveable mechanical control associated with a second, passive tuned resonant circuit and read-out electronics coupled to the first tuned resonant circuit to sense a position of the control. Materials include peptides which interfere with sGC\u03b11’s pro-survival functions, thereby resulting in apoptosis of sGC\u03b11-expressing cells. Wheels are coupled to the back leg frame and to front leg frame for contacting a surface for enabling motion. The contact angle is calculated by using the modified form of Washburn equation.