The present disclosure is generally directed to an embolic material which, in some embodiments, may be in the form of a microsphere or a plurality of microspheres. One embodiment of the present invention is that it implements a multi-degree motion robot arm to move wafers from a loading area to a WIP station where the wafers are then loaded into wafer boats on a rotating cantilever system or directly onto a specialized and reconfigurable paddle designed to hold wafers. Specifically, disclosed is a detector for chemical sensor devices by which a substance to be measured is detected by adsorbing the substance contained in a medium on the surface thereof. The receiver includes a channel estimator configured to derive a channel estimation for all of the multiplicity of transmit antennas using the received pilot reference signals and known or estimated spatial correlation among the multiplicity of transmit antennas. A power steering pump connected with the reservoir pumps fluid between the reservoir and the motor. Usually the user activated cursor control device is a computer control mouse, but the invention may operate effectively with joy sticks and trackballs.