{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11939625","patent":{"patent_number":"US-11939625","title":"Method and sensor for detecting L-cystine","assignee":null,"inventors":[],"filing_date":"2019-08-24T00:00:00.000Z","publication_date":"2024-03-26T00:00:00.000Z","cpc_codes":["C12Q","G01N","G01N","G01N","C12Q","C12Q","C12Q","C12Q"],"num_claims":12,"abstract":"A method and a sensor for detecting L-cystine are disclosed. The method is implemented by assembling a sodium 3,3′-dithiodipropane sulfonate (SPS) membrane on a surface of Au membrane layer of an Au electrode and using an extended gate of field effect transistor (FET) and in-situ signal amplification of the FET to detect L-cystine sensitively. The polyanion of the SPS membrane adsorbs and binds a positively charged target L-cystine through electrostatic interaction, thus forming an electric double layer structure to generate a membrane potential identifying a monovalent organic ammonium ion. The sensor includes the FET, wherein a gate-extended gold electrode is arranged on the FET, and the SPS membrane is assembled on the surface of the Au membrane layer of the gate-extended gold electrode. The sensor has an excellent Nernst response to L-cystine."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and sensor for detecting L-cystine","description":"A method and a sensor for detecting L-cystine are disclosed. The method is implemented by assembling a sodium 3,3′-dithiodipropane sulfonate (SPS) membrane on a surface of Au membrane layer of an Au e","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11939625","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11939625","citation_suggestion":"Patentable. \"Method and sensor for detecting L-cystine\" (US-11939625). https://patentable.app/patents/US-11939625","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11939625","json":"https://patentable.app/api/llm-context/US-11939625","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T16:14:23.753Z"}