{ "access": { "embargo": { "active": false, "reason": null }, "files": "public", "record": "public", "status": "open" }, "created": "2026-06-04T12:02:45.240967+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "files": { "count": 4, "enabled": true, "entries": { "Experiment.zip": { "access": { "hidden": false }, "checksum": "md5:1975fba2127ea37a662087b47cdbca6f", "ext": "zip", "id": "6e66e5c9-616d-442f-a14c-93d44c28d970", "key": "Experiment.zip", "links": { "content": "https://zenodo.org/api/records/18708525/files/Experiment.zip/content", "self": "https://zenodo.org/api/records/18708525/files/Experiment.zip" }, "metadata": {}, "mimetype": "application/zip", "size": 395740, "storage_class": "L" }, "ReadMe.txt": { "access": { "hidden": false }, "checksum": "md5:a576810203ab5862fcad5122f0230af2", "ext": "txt", "id": "7bb8c679-7561-4e63-896e-da51373e11dd", "key": "ReadMe.txt", "links": { "content": "https://zenodo.org/api/records/18708525/files/ReadMe.txt/content", "self": "https://zenodo.org/api/records/18708525/files/ReadMe.txt" }, "metadata": {}, "mimetype": "text/plain", "size": 1057, "storage_class": "L" }, "STEP_Files.zip": { "access": { "hidden": false }, "checksum": "md5:04b1479c940c090939b199cce6304212", "ext": "zip", "id": "a835532c-5a35-4d49-bc4a-626b490d52b5", "key": "STEP_Files.zip", "links": { "content": "https://zenodo.org/api/records/18708525/files/STEP_Files.zip/content", "self": "https://zenodo.org/api/records/18708525/files/STEP_Files.zip" }, "metadata": {}, "mimetype": "application/zip", "size": 559024, "storage_class": "L" }, "Simulation.zip": { "access": { "hidden": false }, "checksum": "md5:24387580668b9bbc795a1de3f640f2b9", "ext": "zip", "id": "5a91a854-aaf6-4f3c-b994-89e9b5b3d68e", "key": "Simulation.zip", "links": { "content": "https://zenodo.org/api/records/18708525/files/Simulation.zip/content", "self": "https://zenodo.org/api/records/18708525/files/Simulation.zip" }, "metadata": {}, "mimetype": "application/zip", "size": 193456, "storage_class": "L" } }, "order": [], "total_bytes": 1149277 }, "id": "18708525", "is_draft": false, "is_published": true, "links": { "access": "https://zenodo.org/api/records/18708525/access", "access_grants": "https://zenodo.org/api/records/18708525/access/grants", "access_links": "https://zenodo.org/api/records/18708525/access/links", "access_request": "https://zenodo.org/api/records/18708525/access/request", "access_users": "https://zenodo.org/api/records/18708525/access/users", "archive": "https://zenodo.org/api/records/18708525/files-archive", "archive_media": "https://zenodo.org/api/records/18708525/media-files-archive", "communities": "https://zenodo.org/api/records/18708525/communities", "communities-suggestions": "https://zenodo.org/api/records/18708525/communities-suggestions", "doi": "https://doi.org/10.5281/zenodo.18708525", "draft": "https://zenodo.org/api/records/18708525/draft", "file_modification": "https://zenodo.org/api/records/18708525/file-modification", "files": "https://zenodo.org/api/records/18708525/files", "latest": "https://zenodo.org/api/records/18708525/versions/latest", "latest_html": "https://zenodo.org/records/18708525/latest", "media_files": "https://zenodo.org/api/records/18708525/media-files", "parent": "https://zenodo.org/api/records/18708524", "parent_doi": "https://doi.org/10.5281/zenodo.18708524", "parent_doi_html": "https://zenodo.org/doi/10.5281/zenodo.18708524", "parent_html": "https://zenodo.org/records/18708524", "preview_html": "https://zenodo.org/records/18708525?preview=1", "quota_increase": "https://zenodo.org/api/records/18708525/quota-increase", "request_deletion": "https://zenodo.org/api/records/18708525/request-deletion", "requests": "https://zenodo.org/api/records/18708525/requests", "reserve_doi": "https://zenodo.org/api/records/18708525/draft/pids/doi", "self": "https://zenodo.org/api/records/18708525", "self_doi": "https://doi.org/10.5281/zenodo.18708525", "self_doi_html": "https://zenodo.org/doi/10.5281/zenodo.18708525", "self_html": "https://zenodo.org/records/18708525", "self_iiif_manifest": "https://zenodo.org/api/iiif/record:18708525/manifest", "self_iiif_sequence": "https://zenodo.org/api/iiif/record:18708525/sequence/default", "versions": "https://zenodo.org/api/records/18708525/versions" }, "media_files": { "count": 0, "enabled": false, "entries": {}, "order": [], "total_bytes": 0 }, "metadata": { "creators": [ { "affiliations": [ { "id": "05x8mcb75", "identifiers": [ { "identifier": "05x8mcb75", "scheme": "ror" }, { "identifier": "grid.440850.d", "scheme": "grid" }, { "identifier": "0000 0000 9643 2828", "scheme": "isni" } ], "name": "VSB - Technical University of Ostrava" } ], "person_or_org": { "family_name": "Nainaragaram Ramasamy", "given_name": "Mahalingam", "identifiers": [ { "identifier": "0009-0006-3088-8276", "scheme": "orcid" } ], "name": "Nainaragaram Ramasamy, Mahalingam", "type": "personal" }, "role": { "id": "contactperson", "title": { "de": "Kontaktperson", "en": "Contact person" } } }, { "affiliations": [ { "id": "05x8mcb75", "identifiers": [ { "identifier": "05x8mcb75", "scheme": "ror" }, { "identifier": "grid.440850.d", "scheme": "grid" }, { "identifier": "0000 0000 9643 2828", "scheme": "isni" } ], "name": "VSB - Technical University of Ostrava" } ], "person_or_org": { "family_name": "Sl\u00edva", "given_name": "Ale\u0161", "identifiers": [ { "identifier": "0000-0001-6109-3616", "scheme": "orcid" } ], "name": "Sl\u00edva, Ale\u0161", "type": "personal" } }, { "affiliations": [ { "name": "Univerzita Tom\u00e1\u0161e Bati ve Zl\u00edn\u011b" } ], "person_or_org": { "family_name": "Saravana Sankar", "given_name": "Subramaniam", "identifiers": [ { "identifier": "0000-0003-1865-0442", "scheme": "orcid" } ], "name": "Saravana Sankar, Subramaniam", "type": "personal" } }, { "affiliations": [ { "name": "Univerzita Tom\u00e1\u0161e Bati ve Zl\u00edn\u011b" } ], "person_or_org": { "family_name": "Kov\u00e1\u0159", "given_name": "Stanislav", "identifiers": [ { "identifier": "0000-0001-7264-150X", "scheme": "orcid" } ], "name": "Kov\u00e1\u0159, Stanislav", "type": "personal" } }, { "affiliations": [ { "name": "Univerzita Tom\u00e1\u0161e Bati ve Zl\u00edn\u011b" } ], "person_or_org": { "family_name": "Go\u0148a", "given_name": "Stanislav", "identifiers": [ { "identifier": "0000-0003-2536-2377", "scheme": "orcid" } ], "name": "Go\u0148a, Stanislav", "type": "personal" } } ], "description": "

Electromagnetic shielding performance in additively manufactured conductive polymers is strongly dependent on geometry; however, the influence of unit-cell orientation remains insufficiently quantified under waveguide-relevant conditions. A polyhedral metamaterial unit cell is designed using conductive PLA–Carbon Black and fabricated as WR-90-compatible shielding inserts via periodic tiling in four orientations (Variants 1–4). Shielding effectiveness is measured experimentally across 8.2–12.4 GHz and benchmarked against full-wave electromagnetic simulations. The four variants exhibit markedly different responses (≈20–70 dB) despite comparable external dimensions. Notably, Variants 1 and 2 have nearly identical mass with <2% difference yet differ by about ≈25 dB across the band, indicating a dominant orientation-driven contribution beyond material quantity, indicating that orientation also governs attenuation predominantly through increased propagation tortuosity and geometry-induced impedance modulation. Variant 2 provides the highest broadband shielding (≈50–70 dB), whereas Variant 3 yields the lowest (≈16–31 dB). Discrepancies between simulation and measurement are primarily associated with uncertainty in permittivity extraction and print-induced geometric deviations.

", "publication_date": "2026-02-19", "publisher": "Zenodo", "references": [ { "reference": "10.5281/zenodo.20541527" }, { "reference": "10.1007/s43939-026-00720-5" } ], "resource_type": { "id": "dataset", "title": { "de": "Datensatz", "en": "Dataset" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "title": "Meta material unit-cell design and orientation effects in conductive fused filament formed polymer for EMI shielding effectiveness" }, "parent": { "access": { "owned_by": { "user": "1095985" }, "settings": { "accept_conditions_text": null, "allow_guest_requests": false, "allow_user_requests": false, "secret_link_expiration": 0 } }, "communities": { "default": "2ba3aa5a-a1a8-4969-a8f4-a4d1642713b6", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_submission_policy": "open", "review_policy": "closed", "visibility": "public" }, "children": { "allow": false }, "created": "2024-03-25T07:19:48.671770+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "2ba3aa5a-a1a8-4969-a8f4-a4d1642713b6", "links": {}, "metadata": { "description": "Materials and technologies for sustainable development", "organizations": [ { "id": "05x8mcb75" }, { "id": "05ggn0a85" } ], "title": "MATUR Community", "type": { "id": "project" } }, "revision_id": 3, "slug": "matur", "updated": "2024-03-25T07:21:56.072434+00:00" } ], "ids": [ "2ba3aa5a-a1a8-4969-a8f4-a4d1642713b6" ] }, "id": "18708524", "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.18708524", "provider": "datacite" } } }, "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.18708525", "provider": "datacite" }, "oai": { "identifier": "oai:zenodo.org:18708525", "provider": "oai" } }, "revision_id": 4, "stats": { "all_versions": { "data_volume": 14352462.0, "downloads": 51, "unique_downloads": 50, "unique_views": 23, "views": 24 }, "this_version": { "data_volume": 14352462.0, "downloads": 51, "unique_downloads": 50, "unique_views": 23, "views": 24 } }, "status": "published", "swh": {}, "updated": "2026-06-04T12:02:45.625699+00:00", "versions": { "index": 1, "is_latest": true } }