{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,16]],"date-time":"2026-02-16T19:54:52Z","timestamp":1771271692290,"version":"3.50.1"},"reference-count":47,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2022,11,14]],"date-time":"2022-11-14T00:00:00Z","timestamp":1668384000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002767","name":"the Natural Science Foundation of Hunan Province, China","doi-asserted-by":"publisher","award":["2021JJ60051"],"award-info":[{"award-number":["2021JJ60051"]}],"id":[{"id":"10.13039\/501100002767","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002767","name":"the Natural Science Foundation of Hunan Province, China","doi-asserted-by":"publisher","award":["18C1446"],"award-info":[{"award-number":["18C1446"]}],"id":[{"id":"10.13039\/501100002767","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100009377","name":"the Scientific Research Foundation of Hunan Education Department","doi-asserted-by":"publisher","award":["2021JJ60051"],"award-info":[{"award-number":["2021JJ60051"]}],"id":[{"id":"10.13039\/100009377","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100009377","name":"the Scientific Research Foundation of Hunan Education Department","doi-asserted-by":"publisher","award":["18C1446"],"award-info":[{"award-number":["18C1446"]}],"id":[{"id":"10.13039\/100009377","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>In this paper, we numerically demonstrated a simple metamaterial for wide-angle and polarization-insensitive absorption in the visible region, which simultaneously showed a strongly suppressed absorption in the near-infrared region. Numerical simulations demonstrated that under normal incidence the proposed absorber had a high absorptivity almost over 90% in the wavelength range from 340 nm to 770 nm, while a low absorptivity less than 10% from 1 \u03bcm to 2 \u03bcm. Because a small unit cell with four-fold symmetry was utilized, the selective absorption of this nanostructure was almost independent of the incident angle and polarization of the incident light. To understand the underlying physical mechanisms, the impedance and the electromagnetic field distributions in a unit cell were analyzed. Moreover, the influence of the structural geometry parameters on the absorption spectrum was systematically studied. Our results may provide a method for using a simple nanostructure to reduce the radiative heat loss for the visible light thermal conversion, or to depress the temperature rise induced by the absorption of below-bandgap photons for photovoltaic solar cells working in the visible region.<\/jats:p>","DOI":"10.3390\/sym14112402","type":"journal-article","created":{"date-parts":[[2022,11,14]],"date-time":"2022-11-14T02:34:58Z","timestamp":1668393298000},"page":"2402","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A Simple Metamaterial for High-Performance Spectrum-Selective Absorption in the Visible Region"],"prefix":"10.3390","volume":"14","author":[{"given":"Xiubo","family":"Jia","sequence":"first","affiliation":[{"name":"Hunan Engineering Laboratory for Control and Optimization of PV Systems, Hunan Vocational Institute of Technology, Xiangtan 411104, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shenwei","family":"Yin","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan University, Changsha 410082, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7821-7010","authenticated-orcid":false,"given":"Zhixiang","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Physics and Electronics, Hunan University, Changsha 410082, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,11,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"207402","DOI":"10.1103\/PhysRevLett.100.207402","article-title":"Perfect metamaterial absorber","volume":"100","author":"Landy","year":"2008","journal-title":"Phys. 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