A coverage robot includes a drive configured to maneuver the robot as directed by a controller, a stasis indication wheel rotatable about a first axis perpendicular to a direction of forward travel, and a suspension supporting the wheel. Preferred embodiments of the massively parallel interface structures provide massively parallel integrated circuit test assemblies. The first channel is largest and allows for delivery of blood to a patient in an amount sufficient to maintain the patient’s metabolism and perfusion throughout the treatment or surgery. The thickness of the drift region is much larger than the width of the space charge region at a defined breakdown voltage; and the thickness of the rear-side emitter region is greater than 5 \u03bcm. However, no perfect page alignment is assumed here, since we are dealing with real images.