Biosensor

A biosensor comprising:

• a substrate;
• an optical structure having a bar shape extending in a first direction on the substrate;
• and
• a cover provided on the substrate and having a bridge shape that is in contact with a top surface of the substrate at both sides of the optical structure,
• wherein the cover has a channel extending in the first direction, the channel having an inlet opening and an outlet opening that expose both sides of the optical structure to outside of the channel, each of the inlet opening and the outlet opening having a height greater than that of the optical structure,
• the optical structure is provided inside the channel, and
• the optical structure comprises:
• a lower layer on the substrate;
• an upper layer on the lower layer;
• and
• an active layer interposed between the lower layer and the upper layer,
• wherein the optical structure has a plurality of nanoholes passing through the lower layer, the active layer, and the upper layer, and
• wherein a diameter and a period of each of the nanoholes decrease in the first direction from one end of the optical structure toward a central portion of the optical structure and increase in the first direction from the central portion toward the other end of the optical structure, which faces the one end.

A biosensor comprising:

• a measuring unit configured to measure an emission pattern or a diffraction pattern;
• a data storage unit configured to store data comprising the emission pattern or the diffraction pattern measured in the measuring unit;
• a data learning unit is configured to perform machine learning through the data transmitted from the data storage unit and determine a presence or absence of the biomaterial and the number of biomaterials through the data;
• and
• a display unit configured to visualize information determined by the data learning unit,
• wherein the measuring unit comprises:
• a substrate;
• an optical structure provided on the substrate;
• and
• a cover having a bridge shape that is in contact with a top surface of the substrate at both sides of the optical structure,
• wherein the cover has a channel extending in a first direction, the optical structure is provided inside the channel, and the optical structure is configured to capture biomaterials that travel through the channel,
• wherein the optical structure includes a central portion and end portions, the central portion corresponding to a resonator region configured to generate resonance, the end portions corresponding to mirror regions configured to reflect light,
• wherein the optical structure has a plurality of nanoholes passing therethrough, and
• wherein a diameter and a period of each of the nanoholes decrease in the first direction from one end of the optical structure toward the central portion of the optical structure and increase in the first direction from the central portion toward the other end of the optical structure, which faces the one end.