In this paper, a numerical algorithm for the electromagnetic scattering analysis of singly curved dielectric structures, which can be applied to a canopy of fighter aircraft, is presented with experimental verification. At first, the Poggio-Miller-Chang-Harrington-Wu-Tsai (PMCHWT) method is used as a MoM-based solution for the electromagnetic scattering of a dielectric material. Its formulation was generated with the EFIE formulation in a multi-region condition. The PMCHWT algorithm is implemented with C++ code, and the accuracy is verified by calculating the bistatic RCS of some canonical structures with conductive or dielectric materials. RCS measurement under quasi-anechoic condition is presented with its procedure and calibration method. The monostatic RCS results of a specially modeled singly curved dielectric structures are obtained analytically with the PMCHWT, as well as experimentally, revealing excellent agreement.
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http://dx.doi.org/10.3390/s22030734 | DOI Listing |
Plant Dis
December 2024
Henan Normal University, College of Life Sciences, Xinxiang, Xinxiang, Henan, China, 453007.
Oxalis corniculata L. (Creeping woodsorrel) is a perennial plant of the genus Oxalis in Oxalidaceae family, which has the high ornamental and medicinal value. Extracts of creeping woodsorrel are used as antioxidants and cholinesterase inhibitors and for anti-inflammatory, antiseptic, analgesic, antirheumatic ache, and antimicrobial purposes (Leporatti et al.
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November 2024
Institute of Semiconductor and Solid State Physics, Johannes Kepler Universität Linz, Altenbergerstraße 69, 4040, Linz, Austria.
The adsorption of the radical α,ɣ-bisdiphenylene-β-phenylallyl (BDPA) molecule to the Cu(100) surface was studied using scanning tunnelling microscopy (STM), scanning tunnelling spectroscopy (STS), and density functional theory (DFT) calculations accounting for dispersion forces. BDPA on Cu(100) was observed to align preferentially along directions due to weak Cu-C chemisorption between fluorenyl carbons with the underlying copper atoms. The curved shape of the BDPA molecule on Cu(100) can be ascribed to the lack of molecular orbital character on the phenyl substituent.
View Article and Find Full Text PDFOrg Lett
November 2024
Department of Organic Chemistry, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain.
In this work, a series of π-conjugated Subphthalocyanine dimers assembled by simple π-bridges were efficiently synthesized through metal-catalyzed reactions. Despite being singly linked, these readily accessible arrays exhibit excellent π-electron communication, significantly perturbing the orbital distribution of conventional SubPcs and inducing notable alterations in their optical properties. The findings presented here demonstrate the potential of SubPcs for constructing curved porphyrin arrays with well-conjugated skeletons and intriguing functionalities.
View Article and Find Full Text PDFPlant Dis
September 2024
Qujing Normal University, Qujing Normal University Sanjiang Avenue, Qujing, China, 650011;
Amorphophallus konjac, commonly called voodoo lily, is a cash crop widely cultivated in southwest China (Gao et al. 2022). In August 2022, leaf spot symptoms were observed in a field (1 ha) located at Fuyuan (25.
View Article and Find Full Text PDFPlant Dis
August 2024
Shandong Agricultural University , Forestry College, Daizong Street No.61, Taian, Shandong, China, 271018.
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