{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:14:13Z","timestamp":1760242453666,"version":"build-2065373602"},"reference-count":20,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2017,7,22]],"date-time":"2017-07-22T00:00:00Z","timestamp":1500681600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The focusing capabilities of a pinhole zone plate lens are presented and compared with those of a conventional Fresnel zone plate lens. The focusing properties are examined both experimentally and numerically. The results confirm that a pinhole zone plate lens can be an alternative to a Fresnel lens. A smooth filtering effect is created in pinhole zone plate lenses, giving rise to a reduction of the side lobes around the principal focus associated with the conventional Fresnel zone plate lens. The manufacturing technique of the pinhole zone plate lens allows the designing and constructing of lenses for different focal lengths quickly and economically and without the need to drill new plates.<\/jats:p>","DOI":"10.3390\/s17071690","type":"journal-article","created":{"date-parts":[[2017,7,24]],"date-time":"2017-07-24T10:04:13Z","timestamp":1500890653000},"page":"1690","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Pinhole Zone Plate Lens for Ultrasound Focusing"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4395-7473","authenticated-orcid":false,"given":"Constanza","family":"Rubio","sequence":"first","affiliation":[{"name":"Centro de Tecnolog\u00edas F\u00edsicas, Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9","family":"Fuster","sequence":"additional","affiliation":[{"name":"Departamento de Comunicaciones, Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sergio","family":"Casti\u00f1eira-Ib\u00e1\u00f1ez","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda Electr\u00f3nica, Universitat de Val\u00e8ncia, Avd. de la Universitat s\/n, 46100 Burjassot, Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonio","family":"Uris","sequence":"additional","affiliation":[{"name":"Centro de Tecnolog\u00edas F\u00edsicas, Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francisco","family":"Belmar","sequence":"additional","affiliation":[{"name":"Centro de Tecnolog\u00edas F\u00edsicas, Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pilar","family":"Candelas","sequence":"additional","affiliation":[{"name":"Centro de Tecnolog\u00edas F\u00edsicas, Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,7,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1038\/35102526","article-title":"Sharper images by focusing soft X-rays with photon sieves","volume":"414","author":"Kipp","year":"2001","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3288","DOI":"10.1121\/1.2721878","article-title":"Complete transmission through a periodically perforated rigid slab","volume":"121","author":"Zhou","year":"2007","journal-title":"J. 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