MetaMamba: Multilayered Huygens' Metasurface Design Dataset

This dataset accompanies the two-part article:

Harnessing Selective State Space Models to Enhance Semianalytical Design of Fabrication-Ready Multilayered Huygens' Metasurfaces

• Part I — Field-based Semianalytical Synthesis
• 
• Part II — Generative Inverse Design (MetaMamba)
• 

GitHub Repository (code + processing scripts): https://github.com/nati-nissan/MetaMamba

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Overview

This dataset supports forward surrogate training and CST calibration for the MetaMamba pipeline — a generative inverse design framework for multilayer transmissive Huygens Metasurface (HMS) unit cells.

The design problem: given a target scattering response (transmission efficiency |T|² and phase φ), recover the five-layer Jerusalem-Cross (JC) patch geometry W = (W₁, …, W₅) that realizes it. This is an inherently one-to-many inverse problem, addressed by the AR-Mamba generator described in Part II.

Two data sources are provided, covering both a single design frequency and a broadband frequency range:

Source	Description
LAYERS (SA)	Large-scale semi-analytical data generated by the LAYERS solver (introduced in Part I). Fast, physics-based, used for surrogate pretraining.
CST Microwave Studio	High-fidelity full-wave simulations under periodic Floquet boundary conditions. Small but accurate; used for surrogate calibration.

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Files

File	Source	Frequency	Samples	Role in pipeline
sa_dataset_20ghz.csv	LAYERS (SA)	20 GHz	~524,000	Forward surrogate pretraining
cst_dataset_20ghz.csv	CST	20 GHz	1,080	Forward surrogate calibration
sa_freq_resp_18_to_22.csv	LAYERS (SA)	18–22 GHz	~65,000	Broadband surrogate pretraining
cst_freq_resp_18_to_22.csv	CST	18–22 GHz	1,080	Broadband surrogate calibration

The CST datasets reuse the same 1,080 unit-cell geometries for both single-frequency and broadband calibration. Each full-wave simulation inherently yields the broadband response, so no additional CST budget is required for the broadband regime.

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Column Schema

Single-frequency files (*_20ghz.csv)

Column	Description	Unit
W1 … W5	JC patch leg lengths (design parameters)	mil
t_square	Transmission power efficiency |T|² at 20 GHz	(0 to 1)
t_pha	Transmission phase φ at 20 GHz	degrees (−180° to 180°)

Frequency-response files (*_freq_resp_18_to_22.csv)

Column	Description	Unit
W1 … W5	JC patch leg lengths	mil
eff_18.0 … eff_22.0	Transmission power efficiency |T|² sampled across [18, 22] GHz	(0 to 1)
pha_18.0 … pha_22.0	Transmission phase φ sampled across [18, 22] GHz	degrees (−180° to 180°)

Data processing (normalization, train/val/test splits) is handled by scripts in the GitHub repository. Raw files are provided here as-is.

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Citation

If you use this dataset, please cite both parts of the paper:

@misc{marcus2026harnessingselectivestatespace,
    title={Harnessing Selective State Space Models to Enhance Semianalytical Design
           of Fabrication-Ready Multilayered Huygens' Metasurfaces:
           Part I - Field-based Semianalytical Synthesis},
    author={Sherman W. Marcus and Natanel Nissan and Vinay K. Killamsetty
            and Ravi Yadav and Dan Raviv and Raja Giryes and Ariel Epstein},
    year={2026},
    eprint={2603.03837},
    archivePrefix={arXiv},
    primaryClass={physics.app-ph},
    url={https://arxiv.org/abs/2603.03837},
}

@misc{nissan2026harnessingselectivestatespace,
    title={Harnessing Selective State Space Models to Enhance Semianalytical Design
           of Fabrication-Ready Multilayered Huygens' Metasurfaces:
           Part II - Generative Inverse Design (MetaMamba)},
    author={Natanel Nissan and Sherman W. Marcus and Dan Raviv
            and Raja Giryes and Ariel Epstein},
    year={2026},
    eprint={2603.03877},
    archivePrefix={arXiv},
    primaryClass={physics.app-ph},
    url={https://arxiv.org/abs/2603.03877},
}

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License

This dataset is released under the MIT License.