Chemical sensor and method for detecting target substance
US-2020080977-A1 · Mar 12, 2020 · US
Chemical sensor module and method for identifying sample substances
US12535456B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12535456-B2 |
| Application number | US-202117445589-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 20, 2021 |
| Priority date | Mar 23, 2021 |
| Publication date | Jan 27, 2026 |
| Grant date | Jan 27, 2026 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A chemical sensor module includes first to n-th (n is a natural number of 2 or greater) graphene sensors; and an exposure mechanism exposing the first to n-th graphene sensors to first to n-th aqueous solutions containing a sample substance and having different concentrations of phosphate ion, magnesium ion, or sulfate ion. The chemical sensor module identifies the sample substance from the difference in electrical characteristics of the first to n-th graphene sensors.
First claim
Opening claim text (preview).
What is claimed is: 1 . A chemical sensor module comprising: a plurality of pipes carrying different types of aqueous solutions containing a sample substance and having different concentrations of phosphate ion, magnesium ion, or sulfate ion; and a plurality of graphene sensors each installed in each of the plurality of pipes, each of the plurality of graphene sensors including a graphene film exposed to each of the different types of aqueous solutions in each of the plurality of pipes, a first electrode connected to the graphene film, and a second electrode connected to the graphene film, the plurality of graphene sensors identifying the sample substance from a difference in electrical characteristics detected by the first and second electrodes of each of the plurality of graphene sensors. 2 . The module according to claim 1 , configured for identifying at least one of a charge of the sample substance, a valence of the sample substance, and a presence or absence of a conjugated double bond of the sample substance. 3 . The module according to claim 1 , wherein the different types of aqueous solutions contain any one of a HEPES buffer, a phosphate buffer, and a mixture thereof. 4 . The module according to claim 1 , wherein the different types of aqueous solutions contain any one of a polyvalent anion, a polyvalent cation, an anion having a conjugated double bond, and a cation having a conjugated double bond. 5 . The module according to claim 1 , wherein each of the plurality of graphene sensors includes a gate wiring in contact with each of the different types of aqueous solutions. 6 . The module according to claim 1 , wherein the plurality of pipes are connected in parallel to an intake port of the sample substance.
Assignees
Inventors
Classifications
- G01N33/0031Primary
comprising two or more sensors, e.g. a sensor array · CPC title
specially adapted for biomolecules, e.g. gate electrode with immobilised receptors · CPC title
by transferring a selected component through a membrane · CPC title
- G01N27/4146Primary
involving nanosized elements, e.g. nanotubes, nanowires · CPC title
Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS · CPC title
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- What does patent US12535456B2 cover?
- A chemical sensor module includes first to n-th (n is a natural number of 2 or greater) graphene sensors; and an exposure mechanism exposing the first to n-th graphene sensors to first to n-th aqueous solutions containing a sample substance and having different concentrations of phosphate ion, magnesium ion, or sulfate ion. The chemical sensor module identifies the sample substance from the dif…
- Who is the assignee on this patent?
- Toshiba Kk
- What technology area does this patent fall under?
- Primary CPC classification G01N33/0031. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 27 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).