Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Gerardo Silva-Oelker"'
Autor:
J. O. Morales-Ferreiro, Gerardo Silva-Oelker, Chandra Kumar, Carlos Zambra, Zeyu Liu, Donovan E. Diaz-Droguett, Diego Celentano
Publikováno v:
Nanomaterials, Vol 14, Iss 21, p 1751 (2024)
We performed first-principles density functional theory (DFT) calculations to numerically investigate the electronic band structures of penta-graphene (PG), a novel two-dimensional carbon material with a pentagonal lattice structure, and its chemical
Externí odkaz:
https://doaj.org/article/38e36eda1c214717b399abad8a9f4753
Publikováno v:
Optics express. 30(18)
This paper numerically explores the capability of an all-photonic approach to enhance radiative cooling, UV and sub-bandgap reflection, and light trapping as a path to improve solar cells efficiency. The structure is based on hemispheres and a flat s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c70cde4ac2feadc5066ae93d29a0f6c2
https://pubmed.ncbi.nlm.nih.gov/36242347
https://pubmed.ncbi.nlm.nih.gov/36242347
Publikováno v:
Optica Advanced Photonics Congress 2022.
We propose a photonic structure of semispheres for radiative cooling of silicon photovoltaic cells. Two materials are studied numerically: soda-lime and polydimethyl-siloxane. Results show an output power increment of ∼ 18 % and ∼ 5 %, respective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ab52cc87e37fa28071cda57399709f3
https://doi.org/10.1364/pvled.2022.pvw5f.1
https://doi.org/10.1364/pvled.2022.pvw5f.1
Publikováno v:
Optics letters. 46(16)
Multilayered diffraction gratings are an essential component in many optical devices due to their ability to engineer light. We propose a first-order optimization strategy to maximize diffraction efficiencies of such structures by a fast approximatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c48ef825c0fe06f10358c323a0d2bb61
https://pubmed.ncbi.nlm.nih.gov/34388777
https://pubmed.ncbi.nlm.nih.gov/34388777
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 231:61-68
Tungsten-hafnia (W-HfO2) selective thermal emitters with high hemispherical emittance for thermophotovoltaic (TPV) applications are explored through numerical simulations. Two structures were analyzed: a planar multilayer stack and a grating. In both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::771efd0867a6085d06642e50f28403a0
https://doi.org/10.1016/j.jqsrt.2019.04.008
https://doi.org/10.1016/j.jqsrt.2019.04.008
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 37(8)
This work presents the implementation, numerical examples and experimental convergence study of first- and second-order optimization methods applied to one-dimensional periodic gratings. Through boundary integral equations and shape derivatives, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18fa572a6cf03f16a12614732726b241
https://pubmed.ncbi.nlm.nih.gov/32749266
https://pubmed.ncbi.nlm.nih.gov/32749266
Publikováno v:
IEEE Transactions on Antennas and Propagation. 66:838-847
We present a novel deterministic method capable of calculating statistical moments of transverse electric polarized fields scattered by perfect electric conductor gratings with small surface random perturbations. Based on a first-order shape Taylor e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c88f9731a763a711d690bd5c1b297c8
https://doi.org/10.1109/tap.2017.2780902
https://doi.org/10.1109/tap.2017.2780902
Publikováno v:
BCICTS
Linearity in low-noise amplifiers is critical for high-performance mm-wave systems. While GaN-based HEMTs offer excellent survivability and noise figure, conventional AlGaN/GaN device designs exhibit only modest linearity. The use of graded-channel s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b715125e2736bf92a028ec7925760d2a
https://doi.org/10.1109/bcicts45179.2019.8972753
https://doi.org/10.1109/bcicts45179.2019.8972753
Publikováno v:
Optics express. 26(22)
This paper explores the performance potential of gratings based on tungsten/hafnia (W/HfO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::97ac79597c8c684ab4380bb7dc3711a4
https://pubmed.ncbi.nlm.nih.gov/30470023
https://pubmed.ncbi.nlm.nih.gov/30470023