Chip for performing an electrophoretic separation of molecules and method using same
First Claim
1. A chip for performing an electrophoretic separation of molecular structures in two dimensions, comprising:
- a base substrate comprising a main surface;
a channel formed in said main surface of said base substrate in a first direction, a first voltage being applicable across said channel in order to allow a first separation of said molecular structures in said first direction on the basis of a first separation mechanism;
a two-dimensional separation matrix formed in said main surface of said base substrate, said separation matrix comprising a shallow recess and an array of stand-alone posts arranged in said recess, said recess extending perpendicular from said channel in a second direction, wherein a second voltage is applicable across said separation matrix in order to allow a second separation of said molecular structures on the basis of the basis of a second separation mechanism; and
means for preventing penetration of the molecular structures in said second direction when said first voltage is applied across said channel by restricting an electrical field caused by said first voltage to said channel.
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Accused Products
Abstract
A chip for performing an electrophoretic separation of micromolecular or macromolecular structures in two dimensions comprises a base substrate comprising a main surface. A channel is formed in the main surface of said base substrate in a first direction, wherein a first voltage is applicable across the channel in order to allow a separation of micromolecular structures or macromolecular structures in the first direction on the basis of a first separation mechanism. In addition, a two-dimensional separation matrix is formed in the main surface of the base substrate, wherein the separation matrix comprises a shallow recess and an array of stand-alone posts arranged in the recess. The recess extends perpendicular from the channel in a second direction, wherein a second voltage is applicable across the separation matrix in order to allow a separation of the structures on the basis of a second separation mechanism.
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Citations
11 Claims
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1. A chip for performing an electrophoretic separation of molecular structures in two dimensions, comprising:
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a base substrate comprising a main surface;
a channel formed in said main surface of said base substrate in a first direction, a first voltage being applicable across said channel in order to allow a first separation of said molecular structures in said first direction on the basis of a first separation mechanism;
a two-dimensional separation matrix formed in said main surface of said base substrate, said separation matrix comprising a shallow recess and an array of stand-alone posts arranged in said recess, said recess extending perpendicular from said channel in a second direction, wherein a second voltage is applicable across said separation matrix in order to allow a second separation of said molecular structures on the basis of the basis of a second separation mechanism; and
means for preventing penetration of the molecular structures in said second direction when said first voltage is applied across said channel by restricting an electrical field caused by said first voltage to said channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
introducing a pH gradient into said channel;
injecting a sample volume into said channel;
applying an electrical field across said channel by turning on said first voltage and, thus, performing a separation of said molecular structures on the basis of said first separation mechanism;
turning-off said first voltage;
incubating the separated molecules with sodium dodecyl sulphate;
applying an electrical field across said separation matrix by turning on said second voltage and, thus, performing a separation of said molecular structures on the basis of said second separation mechanism.
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Specification