Biosensor, e.g., to register and identify DNA molecules, comprises a hollow for the sample which is immobilized and illuminated where optical signals are detected by a shaded photo diode

摘要

The biosensor (100) comprises a semiconductor substrate (101) with a hollow (102) for the sample. One side wall of the hollow has a gold immobilizing unit (104) to secure the sample. The hollow has a photo diode detection unit (103) which registers an optical signal (111) from the DNA molecules (107). A shade (105) over the photo diode shrouds the detection unit from the light (110) used to excite the target molecule. The biosensor (100), to register macromolecular biopolymers, comprises a semiconductor substrate (101) with a hollow (102) for the sample. At least one side wall of the hollow has a gold immobilizing unit (104) to secure the sample. The hollow has a photo diode detection unit (103) which registers an optical signal (111) from the DNA molecules (107). A shade (105) over the photo diode shrouds the detection unit from the light (110) used to excite the target molecule.