{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,13]],"date-time":"2026-09-13T18:04:06Z","timestamp":1789322646071,"version":"build-2803163510"},"reference-count":37,"publisher":"Wiley","issue":"15","license":[{"start":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T00:00:00Z","timestamp":1786320000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T00:00:00Z","timestamp":1786320000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["NRF\u20102019R1A3B2068083"],"award-info":[{"award-number":["NRF\u20102019R1A3B2068083"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,8,13]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Optical path length (OPL) is a key concept that determines elementary and advanced optical effects from classical optical components to cutting\u2010edge nanophotonic devices. In this paper, we treat objects with their physical and OPL thickness simultaneously vanishing and show that such objects in principle can produce remarkably strong optical effects under certain conditions associated with dipole\u2010preserving compression of an ordinary three\u2010dimensional medium. Such two\u2010dimensional (2D) sheets essentially produce elementary optical responses of reflection, diffraction, and localization in the same manner as a quantum\u2010mechanical delta\u2010function potential\u2010well problem. On this basis, we propose periodic array structures that enable resonant excitations and versatile spectral features favorable for practical applications taking advantages of their minimally space\u2010occupying and least inertial embodiment. Importantly, the proposed zero\u2010OPL\u2010thickness elements can be effectively created in practice by using strongly polarizing ceramics or 2D materials including graphene and transition\u2010metal dichalcogenide monolayers.<\/jats:p>","DOI":"10.1002\/nap2.70243","type":"journal-article","created":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T12:55:02Z","timestamp":1786366502000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Optical Responses From Zero Optical\u2010Path\u2010Length Object"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-0150-4561","authenticated-orcid":false,"given":"Da Yong","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Physics Hanyang University  Seoul South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-2986-1618","authenticated-orcid":false,"given":"Moongul","family":"Byun","sequence":"additional","affiliation":[{"name":"Department of Physics Hanyang University  Seoul South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8584-0791","authenticated-orcid":false,"given":"Robert","family":"Magnusson","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering University of Texas  Arlington Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3362-6873","authenticated-orcid":false,"given":"Jae Woong","family":"Yoon","sequence":"additional","affiliation":[{"name":"Department of Physics Hanyang University  Seoul South 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