Ledger · 2026-09-04 · Brain-Computer Interfaces / Materials Science
Silver-Nanowire / Polyvinyl Alcohol / Melamine Sponge (AgPHMS) Electro-Ionic Semi-Dry Electrodes via Template-Directed Freeze-Thaw Polymerization
Cleared
This concept cleared all seven gates and every voiding sub-test.
| Incumbent benchmark | Sintered Ag/AgCl wet disc electrode |
| Entry application | wearable, long-term non-clinical BCI research and development sector |
| Measured advantage | >5.0x increase in duration of stable, ultra-low impedance (<15 kΩ) continuous signal acquisition (>10 hours vs. ~1 to 2 hours for sintered Ag/AgCl wet electrode with gel) |
| Time to first revenue | 4 months |
| Gross margin at parity | 99.4% |
| Startup CapEx | $42,000 |
| Payback from first sale | 0.1 months |
| Capital productivity | 345.6x |
| Regulatory risk | Low — no material regulatory CapEx reported ($0 estimated) |
| Market absence | Verified — the search is reported in the dossier: channels searched, companies searched, closest substitutes named |
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Mechanism, operating protocol with real conditions and yields, computed unit economics with a six-scenario stress test, the absence audit, and every resolved citation.
Assessed 2026-09-04 against seven gates plus the voiding sub-tests. How the method works · Browse all concepts