Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Jiawei Zang"'
Autor:
Mingming Cui, Fazhong Shen, Yingying Qiao, Guanxiang Du, Xiang Zhuo, Jiawei Zang, Zhenyuan Zhang, Yi Wang, Lei Li, Yang Gao
Publikováno v:
Electronics Letters, Vol 58, Iss 24, Pp 893-895 (2022)
Abstract This paper presents a compact broadband antenna that is used in the spin‐state‐based magnetic field quantum sensor. In the diamond nitrogen‐vacancy (NV) centre system, the qubit resonance is excited by the microwave signal, and the fre
Externí odkaz:
https://doaj.org/article/ae2f8b64f49b408fb01a8c8a8f596b33
Publikováno v:
IEEE Access, Vol 10, Pp 59057-59067 (2022)
In this paper, we propose and demonstrate time-modulated patch antennas able to exhibit opposite polarization ellipticity when operated in transmission or reception, effectively leading to nonreciprocal polarization responses. To this purpose, we mer
Externí odkaz:
https://doaj.org/article/e25328b5d66f4b1d907334b35d8b2ab0
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p L012005 (2023)
Strong magnetic fields profoundly affect the quantum physics of charged particles, as seen for example by the integer and fractionally quantized Hall effects, and the fractal “Hofstadter butterfly” spectrum of electrons in the presence of a perio
Externí odkaz:
https://doaj.org/article/bd4a2cea81ee475a924d4ca02b153731
Publikováno v:
Materials, Vol 16, Iss 9, p 3463 (2023)
The present study concerns hydrophobic surface treatments with silane-based coating on concrete surfaces against external ionic transport. The nano-modification and organic–inorganic modification were carried out on it and applied to the mortar mat
Externí odkaz:
https://doaj.org/article/07a6b594b0d449d1a4e2d990803b241f
Publikováno v:
IEEE Access, Vol 9, Pp 169177-169192 (2021)
Microstrip series-fed weighted arrays have widespread applications in millimeter wave (MMW) radar due to their low profile and light weight. Our study proposes a novel Ka-band compact monopulse radar antenna design with a highly directional 2D series
Externí odkaz:
https://doaj.org/article/1550fc424df645beb8b5b5eeebdc0458
Autor:
Jiawei Zang, Eduardo Carrasco, Xuetian Wang, Alejandro Alvarez-Melcon, Juan Sebastian Gomez-Diaz
Publikováno v:
IEEE Access, Vol 8, Pp 44947-44956 (2020)
The analysis and design of reflectarray (RA) antennas based in delay lines is introduced for the first time from a filter perspective. To this purpose, each unit-cell of the RA is considered as a network composed of two ports, one being the delay lin
Externí odkaz:
https://doaj.org/article/baae37e318814a02ac3daf8619cc6852
Publikováno v:
Applied Sciences, Vol 13, Iss 4, p 2451 (2023)
The effects of Nano-CaCO3 on the physical, mechanical properties and durability of cement-based materials were investigated in this paper. The mechanical property, durability and SEM microscopic tests of test blocks with different Nano-CaCO3 content
Externí odkaz:
https://doaj.org/article/ed9732554e784bc4bbe308ede63afc88
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p 043048 (2022)
The moiré Hubbard model describes correlations in certain homobilayer twisted transition metal dichalcogenides. Using exact diagonalization and density matrix renormalization group methods, we find magnetic Mott insulating and metallic phases which,
Externí odkaz:
https://doaj.org/article/2764749f43924f69b88342db97ce03bf
Publikováno v:
Physical Review X, Vol 12, Iss 2, p 021064 (2022)
We present a comprehensive dynamical mean field study of the triangular lattice moiré Hubbard model, which is believed to represent the physics of moiré bilayer transition metal dichalcogenides. In these materials, important aspects of the band str
Externí odkaz:
https://doaj.org/article/1207a1f2a3da4592bae3eb492518bd44
Publikováno v:
Advances in Mechanical Engineering, Vol 10 (2018)
The kinematic optimization of a type of parallel manipulator is addressed. Based on the kinematic analysis, the pressure angles within a limb and among the limbs are introduced, which have definite physical and geometrical meanings. In particular, a
Externí odkaz:
https://doaj.org/article/252bb0fa0e34446e92ee40667931c5f0