Abstract: The present invention relates to a biochip readout device for analyzing and reading out biochips in a rotation manner such that a biochip having been adopted in a non-rotation manner is mounted on an optical disc, and a diagnostic system with a biochip readout device.

Abstract: A biochip and a biochip scanning method and apparatus using phase changes are provided, wherein a laser beam is radiated to a biochip having immobilized probes placed thereon to cause a phase change in a phase change layer located under the biochip and the reflectance on the phase change layer according to the phase change is detected to allow reproduction or recording of bio information on the biochip. A phase change biochip and a phase change detection method using phase changes based on resistance detection are also provided, wherein the resistance between two electrodes connected respectively to both ends of a phase change layer including a bio spot where a phase change occurs is measured so that it is possible to easily detect phase changes in the biochip based on changes in the resistance.

Abstract: The present invention utilizes a principle in which, in a state in which metal nano-particles are attached to target probes and used as markers, and the metal nano-particles have a proper density according to a bio reaction between the target probes and fixed probes, when the metal nano-particles are irradiated with a laser beam having a proper intensity from the optical pick-up head, a higher optical energy is delivered to the phase change layer by an optical amplification effect caused by the metal nano-particles, thereby better inducing an amorphous-to-crystalline phase change.