| 摘要 |
This invention discloses a biosensing apparatus comprising: a resonant optical biosensor in which a coating layer thereof is in part sensitized to at least one given assay species and is patterned for causing light diffracton; an extended light source; collimating means arranged to direct light from the extended light source onto the resonant coupled optical biosensor; a light detector; light focussing means arranged to direct light diffracted from the patterned sensitized coating onto the light detector thereby to define a diffraction field in the plane of the detector; and, scanning means arranged to scan the light detector relative to this diffraction field. This invention also discloses a method for detecting optical phase changes during biosensor operation. |
