Spectral radiative properties of a nickel porous microstructure and magnetic polariton resonance for light trapping

Effect of Porous Structure on the Microwave Absorption Capacity of Soft Magnetic Connecting Network Ni/Al2O3/Ni Film

“…The real part ε of the permittivity increased gradually with the frequency of the alternating microwave field; as the relationship between the complex permittivity's imaginary part ε" and the conductivity ε" ≈ σ/2πfε 0 is constant (where σ, f, and ε 0 are the resistivity, the frequency and the dielectric constant of free space, respectively. ), the imaginary part ε" of the Ni/Al 2 O 3 /Ni nanoparticles increases with increasing frequency [26]. Generally speaking, the magnetic loss mainly comes from magnetization vector rotation, hysteresis loss, magnetic domain wall resonance, natural resonance, and eddy current loss.…”

Optimization of Epoxidation Palm-Based Oleic Acid to Produce Polyols

“…A great interest in magnetic and radiative properties of porous Ni has recently been shown in theoretical works. For example, spectral radiative properties of porous Ni, including wavelength-selective transmission, reflection, and absorption, were theoretically observed by Liu et al 52 The finite-difference time-domain (FDTD) method for electromagnetics was used to calculate spectral radiative properties. It was found that the absorption spectra of porous Ni microstructure will generate two peaks within the wavelength range of 0.2-2.0 μm at normal light incidence.…”

Silicon-based spectrally selective emitters with good high-temperature stability on stepped metasurfaces

“…Therefore, various spectrally selective emitters with different structures have been studied, 10 including blazed gratings [11][12][13] or fishnet gratings, 14 micro-cavities, 15 2D [16][17][18] or 3D photonic crystals, 19 and metamaterials. [20][21][22][23][24][25] Actually, according to Wien's displacement law, the surface temperature of thermal emitters in STPV systems is generally over 1000 K, 20 so practical thermal emitters are generally constructed of refractory materials, 26 such as titanium nitride (TiN), [27][28][29][30][31] nickel (Ni), 32,33 titanium (Ti), 34,35 chromium (Cr), 36,37 tungsten (W), 2,23,[38][39][40][41][42] tantalum (Ta), 16,43 and Mo. 44,45 For example, S. L. Wu et al 29…”

“…Therefore, various spectrally selective emitters with different structures have been studied, 10 including blazed gratings 11–13 or fishnet gratings, 14 micro-cavities, 15 2D 16–18 or 3D photonic crystals, 19 and metamaterials. 20–25 Actually, according to Wien's displacement law, the surface temperature of thermal emitters in STPV systems is generally over 1000 K, 20 so practical thermal emitters are generally constructed of refractory materials, 26 such as titanium nitride (TiN), 27–31 nickel (Ni), 32,33 titanium (Ti), 34,35 chromium (Cr), 36,37 tungsten (W), 2,23,38–42 tantalum (Ta), 16,43 and Mo. 44,45 For example, S. L. Wu et al 29 demonstrated a TiN-based metasurface selective absorber fabricated through continuously variable spatial frequency photolithography, and a calculated average absorption of 87% from 250 nm to 2300 nm and 29% in the wavelength range of 5 μm–13 μm was achieved.…”