Fluidic devices and fabrication methods for microfluidics

Abstract

A fluidic device including a body having a surface and one or more channels located in the body. Recesses are defined on said surface. The one or more channels can have respective boundaries. A layer of adhesive including one or more panel-shaped pieces having a pattern based on the pattern of boundaries of the channels can be formed and applied on the surface of the body. It is further controlled that the layer of adhesive has respective boundaries surrounding the boundaries of the one or more channels.

1 . A fluidic device comprising:
 a body having a surface and one or more channels located in the body and defining one or more recesses on said surface, the one or more channels having respective boundaries; and   a layer of adhesive placed on the surface, wherein the layer of adhesive includes one or more panel-shaped pieces having a pattern which is based on the pattern of boundaries of the one or more recesses.   
     
     
         2 . The fluidic device of  claim 1 , wherein the surface is an exposed surface of the body. 
     
     
         3 . The fluidic device of  claim 1 , further comprising a substrate and wherein the surface is bonded to the substrate by means of the layer of adhesive. 
     
     
         4 . The fluidic device of  claim 1 , wherein the body includes protrusions which protrude from the surface and surrounds the one or more channels, such protrusions separating the layer of adhesive from the one or more channels. 
     
     
         5 . The fluidic device of  claim 4 , wherein the surface has depressed regions which accommodate the layer of adhesive and define said protrusions, said protrusions being able to avoid contact between the layer of adhesive and fluid passing through the one or more channels. 
     
     
         6 . The fluidic device of  claim 1 , wherein a small offset is interposed between boundaries of the one or more channels and boundaries of the layer of adhesive. 
     
     
         7 . The fluidic device of  claim 1 , wherein a plurality of panel-shaped pieces of the layer of adhesive are applied on respective selective zones of the surfaces and define thermal guards for a fluid passing through the one or more channels. 
     
     
         8 . The fluidic device of  claim 1 , wherein the layer of adhesive of different material are applied on the surface. 
     
     
         9 . The fluidic device of  claim 1 , the fluidic device being a microchip. 
     
     
         10 . A fluidic device comprising:
 a body having a surface and one or more channels located in the body and defining recesses on said surface, the one or more channels having respective boundaries; and   a layer of adhesive, structurally independent from the body and including one or more panel-shaped pieces having a pattern which is based on a pattern of boundaries of the channels such that a boundary of the layer of adhesive surrounds the boundaries of the one or more channels.