In one aspect of the invention, 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 {HEAD ~ a planar substrate} 
In one aspect of the invention , 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 { HEAD ~ a planar substrate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD