Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 190, P. 113224 - 113224
Published: May 19, 2025
Language: Английский
Deleted Journal, Journal Year: 2025, Volume and Issue: 6(2), P. 1 - 1
Published: Jan. 1, 2025
Language: Английский
Citations
0
Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 126671 - 126671
Published: April 1, 2025
Language: Английский
Citations
0
Nanomaterials, Journal Year: 2025, Volume and Issue: 15(9), P. 678 - 678
Published: April 29, 2025
Spectrally selective infrared absorbers play a pivotal role in enabling optoelectronic applications such as detection, thermal imaging, and photothermal conversion. In this paper, dual-band wide-spectrum absorber based on metal–dielectric multilayer structure is designed. Through optimized design, the absorptance of reaches peak values 0.87 1.0 target bands (3–5 μm 8–14 μm), while maintaining low about 0.2 non-working 5–8 μm, with excellent spectral selectivity. By analyzing Poynting vector loss distribution, synergistic mechanism ultra-thin metal localized enhancement effect, impedance matching, intrinsic absorption material revealed. This exhibits good polarization-insensitive characteristics angle robustness within large incident range, showing strong adaptability to complex optical field environments. Moreover, proposed planarized design compatible standard fabrication processes has scalability, which can be applied other electromagnetic wave bands. research provides new ideas technical solutions for advanced radiation cooling, stealth, regulation.
Language: Английский
Citations
0
Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(19)
Published: May 12, 2025
We introduce and develop a hybrid structure combining graphene Weyl semimetal that is capable of achieving dynamically adjustable dual-band nonreciprocal radiation. The results reveal the radiation can be attributed to synergistic interaction between resonance mode excitation unique properties materials, with electric field distribution providing further insights into plasmon modes involved. By exploiting resonant characteristics plasmons, we demonstrate strong effectively regulated through adjusting grating's geometric parameters, while maintaining robustness over wide range. Notably, substantial dynamic tuning wavelength for achievable by modulating Fermi level graphene. Our research offer promising prospects development complex energy harvesting conversion systems within advanced thermal frameworks.
Language: Английский
Citations
0
Journal of Applied Physics, Journal Year: 2025, Volume and Issue: 137(19)
Published: May 16, 2025
In modern military applications, the advancement of infrared detection technology has posed significant challenges to concealment targets. Traditional stealth technologies struggle balance low emissivity and heat dissipation requirements, limiting their effectiveness. this study, we design a near-perfect spectrally selective emitter based on combination Si/HfO2 multilayer films SiO2. By optimizing structural parameters using transfer-matrix method, achieves average emissivities as 0.06 0.11 in 3–5 8–14 μm atmospheric windows, respectively, effectively suppressing radiation meeting requirements for stealth. 5–8 non-atmospheric window, reaches 0.84, demonstrating excellent radiative cooling performance. The figure merit 0.88 highlights its spectral modulation capability. Through simulations electric field distributions power loss density, physical mechanisms behind are clearly elucidated. Additionally, effects layer thickness, light polarization, incident angles analyzed, revealing stable performance within an angle range 0°–40°. Infrared thermal imaging related calculations confirm that temperature is significantly lower than surface temperature, reducing difference between target background. This ensures strong capabilities while minimizing target's signature. Compared previous research, study exhibits superior performance, offering more efficient feasible solution modulation, with broad application prospects fields such management.
Language: Английский
Citations
0
Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 190, P. 113224 - 113224
Published: May 19, 2025
Language: Английский
Citations
0