A spin polarization enhancement artificial magnet comprises combinations of positive spin asymmetry interfaces and inverse spin asymmetry interfaces arranged antiferromagnetically such that current passed through the SPEA magnet has enhanced spin polarization. A one-sided swing arm having an outer end portion, a support portion including a strut assembly, and an inner end portion is pivotally mounted on the rear end of the chassis. The modified scan list is of a reduced number of a reduced size relative to the formal scan list, thereby permitting subsequent selection, made from the modified scan list, by a selector of a target radio network to be made in a reduced amount of time. Various electrical, optical and electro-optical devices can be formed from the composites. This composition has various catalytic applications. 0 in one molecule having an absolute molecular weight of 1,190,000 measured through GPC-MALLS, and a melt flow rate of from 1.