Systems and methods for detection of labeled materials
First Claim
Patent Images
1. A system for detecting marked regions on a surface, comprising:
- an excitation radiation source;
a focusing optics constructed and arranged to focus radiation from said excitation radiation source onto a surface region of a wafer including several chips with probe sequences;
a focusing system constructed and arranged to displace said wafer to bring at least a portion of said wafer in focus with respect to said focused radiation;
a radiation direction system constructed and arranged to scan said excitation radiation across several surface regions;
a translation stage upon which said wafer is mounted, said translation stage being moveable in at least one dimension and being arranged with said radiation direction system to scan a plurality of different chips on said wafer;
a detector for detecting fluorescent radiation emitted from said surface region in response to said excitation radiation; and
a data acquisition system for recording an amount of said fluorescent radiation detected as a function of a position on said surface region from which said fluorescent radiation was emitted.
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Abstract
Labeled targets on a support synthesized with polymer sequences at known locations according to the methods disclosed in U.S. Pat. No. 5,143,854 and PCT WO 92/10092 or others, can be detected by exposing marked regions of sample to radiation from a source and detecting the emission therefrom, and repeating the steps of exposition and detection until the sample is completely examined.
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Citations
30 Claims
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1. A system for detecting marked regions on a surface, comprising:
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an excitation radiation source;
a focusing optics constructed and arranged to focus radiation from said excitation radiation source onto a surface region of a wafer including several chips with probe sequences;
a focusing system constructed and arranged to displace said wafer to bring at least a portion of said wafer in focus with respect to said focused radiation;
a radiation direction system constructed and arranged to scan said excitation radiation across several surface regions;
a translation stage upon which said wafer is mounted, said translation stage being moveable in at least one dimension and being arranged with said radiation direction system to scan a plurality of different chips on said wafer;
a detector for detecting fluorescent radiation emitted from said surface region in response to said excitation radiation; and
a data acquisition system for recording an amount of said fluorescent radiation detected as a function of a position on said surface region from which said fluorescent radiation was emitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of scanning a polymer array having a plurality of different polymer sequences, each of said different polymer sequences being immobilized on a chip in a different known location, to identify which polymer sequence on said array is bound by a target molecule, the method comprising:
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focusing excitation radiation from an excitation radiation source onto a surface region of a wafer including several chips with polymer sequences;
displacing said wafer to bring at least a portion of said wafer in focus with respect to said focused radiation;
scanning said focused excitation radiation across several said surface regions;
translating said wafer in at least one dimension by a translation stage upon which said wafer is mounted, said scanning and translating enabling a scan of a plurality of different chips on said wafer;
detecting fluorescent radiation from said surface region in response to said excitation radiation; and
recording an amount of said fluorescent radiation detected as a function of a position on said surface region from which said fluorescent radiation was emitted. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification