Metasurface color sorter for a Bayer image sensor

Design a silicon-nitride metasurface that routes blue, green and red light into the pixels of a Bayer image sensor, with features of at least 80 nm.

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File it in the catalog (shoal-catalog 0521c19bbd38)

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	1	+{
	2	+ "domain": "physics-astronomy",
	3	+ "topics": [
	4	+ "optics-photonics"
	5	+ ],
	6	+ "type": "design",
	7	+ "benchmark": {
	8	+ "task": "Maximize the worst-color efficiency of a Bayer color-sorting metasurface",
	9	+ "metric": {
	10	+ "name": "Min over colors of mean subpixel efficiency",
	11	+ "better": "higher"
	12	+ },
	13	+ "baseline": {
	14	+ "name": "Best leaderboard design at 80 nm (Schubert, 2024)",
	15	+ "score": 0.5511046138785891
	16	+ }
	17	+ },
	18	+ "source": {
	19	+ "key": "invrs-gym",
	20	+ "name": "invrs-gym",
	21	+ "url": "https://invrs-io.github.io/gym/notebooks/challenges/bayer_sorter.html",
	22	+ "id": "bayer_sorter",
	23	+ "curator": "Martin F. Schubert (invrs.io)",
	24	+ "poser": "Martin F. Schubert, after Zou et al. (2022)",
	25	+ "status": "archived (final leaderboard, October 2025)",
	26	+ "as_of": "2026-10-20",
	27	+ "catalog": "0521c19bbd38"
	28	+ }
	29	+}