Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156128 - 156128
Published: Sept. 1, 2024
Language: Английский
ACS Applied Optical Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 3, 2025
Tailoring the wavelength, bandwidth, directionality, and polarization of thermal radiation is critical for various applications like infrared camouflage, radiative cooling, gas sensing. In this work, we present a deep-subwavelength bilayer structure that serves as long-wavelength (LWIR) narrow-band emitter with selectivity. The proposed LWIR basically consists tungsten oxide (WO3) polar dielectric layer upon an opaque gold (Au) ground plane. Transfer matrix method (TMM) calculations are employed to analytically investigate optical responses emitter. Leveraging Berreman mode near longitudinal (LO) phonon energy WO3, experimentally realizes high absorption (97.6%) TM-polarized state low (4.2%) TE-polarized (at incident angle 60° wavelength 10.12 μm), which shows good agreement theoretical results. Such excellent polarization-sensitive performance makes our very promising security features, information encryption, anticounterfeiting.
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: April 24, 2025
Visible-infrared reflectivity carries an important part of identity information for most kinds objects, and its decoupled modulation holds significant application value in the field reconstruction, such as display, camouflage, anticounterfeiting. Some well-designed materials or devices have exhibited remarkable abilities optical reflectivity, but it is difficult to concisely describe their performance involved controllable characteristics are at least two. Here, a systematic evaluation strategy that comprehensively assesses both decoupling degree changing range through single quantitative indicator first proposed, set subwavelength structures presented complex four visible-infrared characteristics. The ability evaluated utilizing new strategy, where magnitudes indicators align with flexibility, thus verifying validity proposed approach. possesses robustness can be fabricated by electrochemical process. Based on obtained structures, multiple display successfully implemented.
Language: Английский
Citations
0
Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 24, 2024
Abstract The ability to actively control broadband light absorption and reflection ranging from deep‐ultraviolet (DUV) near‐infrared (NIR), is crucial for various optical optoelectronic applications. Herein, a novel type of ultrathin, lithography‐free, aperiodic thin‐film metamaterial coatings (metacoatings) inverse‐designed DUV NIR (190–1700 nm), which composed series deeply subwavelength tungsten oxide layers with graded refractive index profiles (by varying the deposited Ar gas pressures 0.1 3.0 Pa) above an opaque aluminum layer. Experimental results show that these proposed metacoatings can realize transition strong (as‐deposited state) high (annealed visible (VIS) (400–1700 through thermal annealing techniques. have overall thickness just ≈200 nm, angle‐insensitive up 70° as well are polarization‐independent. Furthermore, vivid structural colors be generated by rearranging finally employed in color display These offer very promising platform many applications such photodetectors, thermophotovoltaics, information encryption devices, etc.
Language: Английский
Citations
1
Materials Today Physics, Journal Year: 2024, Volume and Issue: unknown, P. 101614 - 101614
Published: Dec. 1, 2024
Language: Английский
Citations
1
Optics Communications, Journal Year: 2024, Volume and Issue: unknown, P. 131128 - 131128
Published: Sept. 1, 2024
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156128 - 156128
Published: Sept. 1, 2024
Language: Английский
Citations
0