In the present work, we present a sol-gel method to synthesize elliptic silica particles using a mixture of CTAB/L-tyrosine as structure-directing agents. Our results demonstrate that L-tyrosine is essential for the formation of ellipsoidal morphology, as reactions carried out under varying CTAB concentration only formed spherical to rod-like particles. With increased concentrations of L-tyrosine, the produced particles go from isotropic spherical particles to anisotropic prolate and oblate ellipsoidal particles with increased dimensions. A typical synthesis of ellipsoidal particles presents an average major axis of 137 nm and an average aspect ratio of 1.6. The small-angle X-ray scattering showed that the distance between centers of adjacent cylinders is on average ∼ 4.6 nm. Optical trapping of single particles was used to perfectly isolate individual ellipsoidal silica particle from their environment while measuring their geometric properties with great precision. We observed an average aspect ratio of 1.5 while measuring the particles in 3D space, which is consistent with the TEM analysis.
", "funding": [ { "award": { "acronym": "SCATTER", "id": "00k4n6c32::948319", "identifiers": [ { "identifier": "https://cordis.europa.eu/projects/948319", "scheme": "url" } ], "number": "948319", "program": "H2020-EU.1.1.", "title": { "en": "Bottom-up fabrication of nanostructured silicon-based materials with unprecedented optical properties" } }, "funder": { "id": "00k4n6c32", "name": "European Commission" } } ], "languages": [ { "id": "eng", "title": { "en": "English" } } ], "publication_date": "2025-12-19", "publisher": "Zenodo", "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" } } ], "subjects": [ { "subject": "Nanoparticles" }, { "subject": "Particle size" }, { "subject": "Particulate matter" }, { "subject": "Silica" }, { "subject": "Transmission electron microscopy" } ], "title": "Synthesis and optical levitation of ellipsoidal silica particles", "version": "Version 1" }, "parent": { "access": { "owned_by": { "user": "62291" }, "settings": { "accept_conditions_text": null, "allow_guest_requests": false, "allow_user_requests": false, "secret_link_expiration": 0 } }, "communities": { "default": "1d73b34c-2d6c-4ba3-b08a-60378437b429", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_submission_policy": "open", "review_policy": "open", "visibility": "public" }, "children": { "allow": false }, "created": "2019-09-26T12:29:21.323613+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "1d73b34c-2d6c-4ba3-b08a-60378437b429", "links": {}, "metadata": { "curation_policy": "ICMCB data collection and all of these partners in their relationships
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The Institute for Solid State Chemistry Bordeaux (French: Institut de Chimie de la Matière Condensée de Bordeaux, ICMCB) was founded in 1995. It is part of the CNRS, but is associated with the Science and Technology Department of University of Bordeaux, and also maintains close links with the local engineering school Polytechnical Institute of Bordeaux (IPB) and the technical college Institut Universitaire de Technologie (IUT, now part of Université de Bordeaux).
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", "title": "Institut de Chimie de la Mati\u00e8re Condens\u00e9e de Bordeaux" }, "revision_id": 0, "slug": "icmcb", "updated": "2019-09-27T13:43:50.164379+00:00" } ], "ids": [ "1d73b34c-2d6c-4ba3-b08a-60378437b429" ] }, "id": "17988539", "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.17988539", "provider": "datacite" } } }, "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.17988540", "provider": "datacite" }, "oai": { "identifier": "oai:zenodo.org:17988540", "provider": "oai" } }, "revision_id": 4, "stats": { "all_versions": { "data_volume": 5587776.0, "downloads": 42, "unique_downloads": 42, "unique_views": 20, "views": 23 }, "this_version": { "data_volume": 5587776.0, "downloads": 42, "unique_downloads": 42, "unique_views": 20, "views": 23 } }, "status": "published", "swh": {}, "updated": "2026-04-08T12:56:00.895904+00:00", "versions": { "index": 1, "is_latest": true } }