Certain thermoplastic additives that induce simultaneously low clarity and high nucleation efficacy are provided. In one implementation, a first layer comprising a metal and a non-metal impurity is formed over a region of a silicon comprising substrate where a silicide interconnection is desired. This assembly has two collars that mutually engage and surround a hopper flange. There are low battery power read-outs and automatic shutoffs. Also provided are compositions comprising, methods of preparing, and methods of using the subject compounds.