In one aspect of the invention, {HEAD ~ an integrated assembly} useful in, e.g., sample analysis systems, may be constructed according to {TAIL ~ the invention} wherein complementary microstructures are formed by an etching or similar process in a planar substrate 
constructed according to
In one aspect of the invention , { HEAD ~ an integrated assembly } useful in , e.g. , sample analysis systems , may be constructed according to { TAIL ~ the invention } wherein complementary microstructures are formed by an etching or similar process in a planar substrate
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH