{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8518711","patent":{"patent_number":"US-8518711","title":"Quantitative characterization of metallic and semiconductor single-walled carbon nanotube ratios","assignee":null,"inventors":[],"filing_date":"2010-07-29T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["B82Y","G01N"],"num_claims":14,"abstract":"Methods and processes for quantitatively determining the ratio of the metallic to semiconductor tubes in the sample single-wall carbon nanotubes is provided. The single-walled carbon nanotubes can be sonicated to debundle the bulk material. The debundled SWNTs can be coated with a polymer, such as sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SDPS), and the coated SWNTs can be deposited on a substrate. The total number of tubes can be determined by atomic force microscopy (AFM). The semiconducting nanotubes can be determined by photoluminescence spectroscopy. The combination of photoluminescence and AFM measurements provides a quantitative ratio of the metallic to semiconductor tubes in the sample."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Quantitative characterization of metallic and semiconductor single-walled carbon nanotube ratios","description":"Methods and processes for quantitatively determining the ratio of the metallic to semiconductor tubes in the sample single-wall carbon nanotubes is provided. The single-walled carbon nanotubes can be ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8518711","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-8518711","citation_suggestion":"Patentable. \"Quantitative characterization of metallic and semiconductor single-walled carbon nanotube ratios\" (US-8518711). https://patentable.app/patents/US-8518711","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8518711","json":"https://patentable.app/api/llm-context/US-8518711","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:46:29.355Z"}