Linear microfluidic array device and cassette for temperature gradient microfluidics

A microfluidic chip comprising:

• a first plurality of microfluidic channels each in fluid communication with one of a first plurality of inlets;
• and
• a second plurality of microfluidic channels each in fluid communication with one of a second plurality of inlets;
• wherein the first plurality of inlets have a first spacing along a first linear path, wherein a central region of the first plurality of microfluidic channels have a second spacing along a second linear path, and wherein the first spacing is greater than the second spacing;
• wherein the second plurality of inlets have the first spacing along a third linear path;
• wherein the first and second plurality of inlets are non-colinear;
• and
• wherein the first and second plurality of microfluidic channels are interlaced in parallel in the central region with consecutive channel spacing along the second linear path less than the second spacing.