The invention provides an optical device that enables a mutual electrical connection between the stacked semiconductor substrates to be realized with ease and high reliability and to provide for miniaturization. The compositions of such co-dispersions are based on blends of epoxy resins and at least a phenolic novolac resin within the profile viscosity versus temperature in the ranges from 1 500 000 to 300 mPas at 80\xb0 C. The formatted data within an identified structure is filtered by the tag to identify an identified data element type form the plurality of data element types. A representation of the pointer is modified in response to the termination of the idle time period associated with the pointer. The aerosolizing apparatus includes a plurality of spray sites each having a tip end, the spray sites cooperating with a charge source to result in an aerosolized spray from at least one tip end, a plurality of discharge electrodes downstream of the tip ends, and a plurality of reference electrodes downstream of the plurality of discharge electrodes. A first plurality of wheel assemblies are interconnected to the lower surface of the first leg and a second plurality of wheel assemblies are interconnected to the lower surface of the second leg.