Microfluidic devices with SPR sensing capabilities
First Claim
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1. A SPR system, comprising:
- a sensor chip comprising a sensor substrate, a channel, an upper channel surface, a lower channel surface and a side channel surface;
and an optical detector, said optical detector configured to generate non-visible radiation in a predetermined wavelength detection range and to direct said radiation towards the sensor substrate, wherein the channel contains a surface plasmon generating film, the sensor substrate comprising a material that is not transparent to visible light but is substantially transparent to non-visible radiation.
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Abstract
A microfluidic system including a chip sensor and an SPR optical detector. The chip sensor may be made a non-transparent material, such as polyimide or silicon, allowing non-visible radiation produced by the SPR optical detector to pass through and interact with a surface plasmon generating layer on the chip sensor.
29 Citations
26 Claims
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1. A SPR system, comprising:
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a sensor chip comprising a sensor substrate, a channel, an upper channel surface, a lower channel surface and a side channel surface; and an optical detector, said optical detector configured to generate non-visible radiation in a predetermined wavelength detection range and to direct said radiation towards the sensor substrate, wherein the channel contains a surface plasmon generating film, the sensor substrate comprising a material that is not transparent to visible light but is substantially transparent to non-visible radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A sensor chip, comprising:
a channel comprising a substrate, an upper channel surface, a lower channel surface and a side channel surface, wherein said channel contains a surface plasmon generating film, and the substrate comprising a material that is not transparent to visible radiation but is substantially transparent to radiation having a predetermined wavelength in at least a portion of the non-visible wavelength range. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for using a microfluidic system for SPR analysis, said microfluidic system comprising a sensor chip and an optical detector, said sensor chip comprising a channel, an upper channel surface, a lower channel surface and a side channel surface, wherein the channel contains a surface plasmon generating film, said optical detector generating non-visible radiation in a predetermined wavelength detection range and being configured to direct said radiation towards the sensor chip, the sensor chip being made from a material that is not transparent but allowing radiation in the predetermined wavelength detection range to pass through to the surface plasmon generating film, said method comprising:
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passing a solution of interest through the channel; and passing non-visible radiation generated by the optical detector through the sensor chip towards the surface plasmon generating film. - View Dependent Claims (23, 24, 25, 26)
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Specification