CISS-Based Gradient-Multilayer Selective Ion Sensors

PROBLEM: A gradient ion sensor can use an outer chiral zone to admit a target ion, a middle zone to bind it, and an inner zone to pass a spin-filtered signal to the electrode, yet the sensor's selectivity depends on all three zones staying in their intended roles. If one zone is revised without a record, later sensors cannot be compared with earlier ones. Sensor developers need preserved versions of each gradient profile with its measured response.

SOLUTION: Storage Copy Data Management would version CISS gradient sensors with their zone compositions, chiral identities, DFT binding predictions, intended spin-selective steps, and sensor test results, allowing rollback to any earlier gradient. The capability would keep deposition and regeneration energy with each version so a working gradient is never lost to an unrecorded revision. Water-based, low-temperature gradient versions would be retained as distinct auditable copies.

EVIDENCE BASIS: CISS — chiral molecules transmit one electron spin preferentially; observed in DNA, peptides, and helicenes since 1999; DOCUMENTED as a phenomenon, device-scale use REPORTED/emerging. DFT via Kohn–Sham equations; Hohenberg–Kohn 1964, Kohn–Sham 1965, Nobel 1998. Biosorption validation via batch isotherms and Langmuir/Freundlich models is textbook DOCUMENTED. Source: CISS literature since 1999; standard electrochemistry textbooks.