Patent ID: 7858042

Claim:
A method of fabricating a microfluidic chip, the method comprising: forming a first substrate having a first surface and a second surface that is opposite to the first surface, the first substrate including a first sunken area of a first depth and a second sunken area of a second depth, each formed on the first surface, wherein the second depth is greater than the first depth and the first sunken area and the second sunken area being fluid communicated to each other; forming a second substrate having a first surface and a second surface that is opposite to the first surface, the second substrate being formed of a silicone resin; forming an organic thin film on the first surface of the first substrate; removing a part of the organic thin film from areas of the first surface of the first substrate, the areas to be contact with to the first surface of the second substrate; treating the first surface of the second substrate using an O 2 -plasma process; and adhering the first surface of the second substrate to the first surface of the first substrate to give the microfluidic chip provided with a channel which forms a passage of flow of a fluid and a chamber to receive the fluid, wherein the channel is provided by the first sunken area of the first substrate and the chamber is provided by the second sunken area of the first substrate.