Chemical sensor and method for detecting target substance
A chemical sensor for detecting a target substance in a gas sample, including a membrane; and an olfactory receptor fragment which is fixed to the membrane. The chemical sensor optionally includes a source electrode connected to one end of the membrane; and a drain electrode connected to the other end of the membrane, in which the membrane is a graphene.
1. A chemical sensor, comprising:
a membrane;
an olfactory receptor fragment which is fixed to the membrane;
a source electrode connected to one end of the membrane;
a drain electrode connected to the other end of the membrane;
a liquid phase which is provided on the membrane to coat the olfactory receptor fragment; and
a target substance transporting carrier contained in the liquid phase,
wherein
the membrane is a graphene, and
the target substance transporting carrier has a pocket-like shape having a hydrophilic part on an outer side and a hydrophobic part on an inner side.
2. The chemical sensor of claim 1 , wherein a thickness of the liquid phase is greater than 0 μm and equal to or less than 50 μm.
3. The chemical sensor of claim 1 , wherein the target substance transporting carrier is an odorant binding protein or an inclusion compound.
4. The chemical sensor of claim 1 , further comprising:
a blocking agent provided on a surface of the membrane to which the olfactory receptor fragment is fixed.
5. The chemical sensor of claim 4 , wherein the blocking agent is an acidic substance.
6. A chemical sensor, comprising:
an olfactory receptor fragment which is capable of binding to a target substance; and
a detector which detects a physical property change due to the binding of the target substance and the olfactory receptor fragment.
7. A chemical sensor, comprising:
a membrane; and
a target substance transporting carrier fixed to the membrane,
wherein the target substance transporting carrier has a pocket-like shape having a hydrophilic part on an outer side and a hydrophobic par on an inner side.
8. The chemical sensor of claim 7 , further comprising:
a source electrode connected to one end of the membrane; and
a drain electrode connected to the other end of the membrane,
wherein the membrane is a graphene.
9. The chemical sensor of claim 7 , further comprising:
a liquid phase which is provided on the membrane to coat the olfactory receptor fragment.
10. The chemical sensor of claim 9 , wherein a thickness of the liquid phase is greater than 0 μm and equal to or less than 50 μm.
11. The chemical sensor of claim 7 , further comprising:
a blocking agent provided on a surface of the membrane to which the target substance transporting carrier is fixed.
12. The chemical sensor of claim 11 , wherein the blocking agent is a basic substance.
13. The chemical sensor of claim 7 , wherein the target substance transporting carrier is an odorant binding protein or an inclusion compound.
14. A chemical sensor, comprising:
a target substance transporting carrier which has a pocket-like shape having a hydrophilic part on an outer side and a hydrophobic part on an inner side; and
a detector which detects a physical property change due to the binding of a target substance and the target substance transporting carrier.
15. The chemical sensor of claim 1 , wherein a target substance to be detected by the chemical sensor is an odorant.
16. The chemical sensor of claim 1 , wherein the membrane is a sensitive membrane to a target substance to be detected by the chemical sensor.