Achieving Dual Objectives of Maximizing Transmitted Solar Energy and Minimizing UV Transmission at Vertical Incidence DOI Creative Commons
Jia‐Lin Li

Applied and Computational Engineering, Год журнала: 2024, Номер 94(1), С. 118 - 122

Опубликована: Ноя. 15, 2024

Abstract. In northern China, exterior window glass significantly impacts heating energy consumption during winter by collecting heat and providing insulation. Additionally, it plays a crucial role in shading attenuating ultraviolet rays. This paper presents an intelligent optimization algorithm based on genetic algorithms for optimizing the thickness of three-layer insulating to maximize solar radiation transmission minimize below 400nm wavelength, thereby enhancing glass's collection capabilities. The study utilizes MATLAB's function, running 20 iterations overcome local optima, achieving optimal configuration 12mm each layer. allows maximum while substantially reducing UV radiation, balancing efficiency with health protection. Future research directions include examining different materials' effects blocking, considering climate change performance, scaling method large-scale architectural applications assess its practical economic viability. findings contribute development energy-efficient health-protective building materials.

Язык: Английский

Radiative cooling technologies toward enhanced energy efficiency of solar cells: Materials, systems, and perspectives DOI
Jia Wang, Hao Chen, Jingchong Liu

и другие.

Nano Energy, Год журнала: 2025, Номер unknown, С. 110680 - 110680

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

5

Space-to-ground infrared camouflage with radiative heat dissipation DOI Creative Commons
Bing Qin,

Huanzheng Zhu,

Rongxuan Zhu

и другие.

Light Science & Applications, Год журнала: 2025, Номер 14(1)

Опубликована: Март 26, 2025

Abstract With the development of space exploration and exploitation, it is imperative to address potential threats posed objects, particularly ground-based infrared observation. However, in extreme environment, achieving camouflage across different bands with simultaneous thermal management challenging has so far slipped out concern. Here, we propose space-to-ground strategy, compatible radiative heat dissipation. Camouflage H, K, mid-wave-infrared (MWIR), long-wave-infrared (LWIR) achieved through a multilayer structure, dissipation very-long-wave-infrared (VLWIR) band. High absorptivity (0.839/0.633) H/K minimizes reflected signal solar radiation low emissivity (0.132/0.142) MWIR/LWIR suppresses signal. Additionally, high (0.798) VLWIR band ensures efficient management, resulting temperature decrement 39.8 °C metal reference simulated environment (with 1200 W m − 2 input). This work inspires sophisticated spectral manipulation environments guides techniques for objects.

Язык: Английский

Процитировано

5

Artificial Intelligence-Guided Inverse Design of Deployable Thermo-Metamaterial Implants DOI Creative Commons

Pengcheng Jiao,

Chenjie Zhang,

Wenxuan Meng

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Current limitations in implant design often lead to trade-offs between minimally invasive surgery and achieving the desired post-implantation functionality. Here, we present an artificial intelligence inverse paradigm for creating deployable implants as planar tubular thermal mechanical metamaterials (thermo-metamaterials). These thermo-metamaterial exhibit tunable properties volume change response temperature changes, enabling personalized surgery. We begin by generating a large database of corrugated thermo-metamaterials with various cell structures bending stiffnesses. An model is subsequently developed integrating evolutionary algorithm neural network. This allows automatic determination optimal microstructure performance,i.e., target stiffness. validate this approach designing patient-specific spinal fusion tracheal stents. The results demonstrate that can achieve over 200% increase or cross-sectional area their fully deployed states. Finally, propose broader vision clinically informed process prioritizes biocompatibility, feasibility, precision simultaneously development high-performing viable implants. feasibility proposed demonstrated using fuzzy analytic hierarchy customize based on relevant factors.

Язык: Английский

Процитировано

3

A tunable metamaterial microwave absorber inspired by chameleon’s color-changing mechanism DOI Creative Commons
Dahyun Daniel Lim,

Alberto Ibarra,

Jeong-Woo Lee

и другие.

Science Advances, Год журнала: 2025, Номер 11(3)

Опубликована: Янв. 15, 2025

A metamaterial absorber capable of swiftly altering its electromagnetic response in the microwave range offers adaptability to changing environments, such as tunable stealth capabilities. Inspired by chameleon’s ability change color through structural transformation photonic lattice crystals, which shift bandgaps reflection and transmission visible light, we designed a crisscross structure that transforms from an expanded collapsed form. This enables switch between broadband absorption peak (4 18 gigahertz). The structure, optimized data-driven design, is mechanically actuated rotation interlinked trusses. mechanism changes entire array’s response, allowing it remain undetected external radar or transmit internal signal near-field receiver when needed. mechanical actuation shifting arrayed are demonstrated.

Язык: Английский

Процитировано

3

Visible transparency modulated cooling windows using pseudorandom dielectric multilayers DOI Creative Commons
Seok-Beom Seo, Jaebeom Lee,

Jae-Seon Yu

и другие.

Nanophotonics, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Abstract The increasing global temperatures have escalated the demand for indoor cooling, thus requiring energy-saving solutions. Traditional approaches often integrate metal layers in cooling windows to block near-infrared (NIR) sunlight, which, albeit effective, lack broad modulation of visible transmission and lead heat accumulation due sunlight absorption. Here, we address these limitations by developing using ZnS/MgF 2 multilayers, optimized through a binary optimization-based active learning process. We demonstrated that with total thickness below 1 µm, effectively reduced blocking NIR while achieving desired transmittance. designed multilayers exhibited transmittance ranging from 0.41 0.89 retaining decent reflectance between 0.37 0.52. These spectral characteristics remained consistent up incident angles >60°, ensuring their practical applicability vertically oriented windows. Outdoor experiments showed substantial temperature reductions 8.8 °C on floors compared uncoated glass learning-based superior performance analytical distributed Bragg reflectors equivalent thicknesses improving modulating In addition, greater number bits extensively tuned color, enabling customization aesthetic purposes. findings suggest all-dielectric can provide scalable, cost-effective alternative reducing energy consumption buildings vehicles large surfaces, supporting efforts mitigate climate change enhanced efficiency.

Язык: Английский

Процитировано

2

Highly Integrated Phase Change and Radiative Cooling Fiber Membrane for Adaptive Personal Thermal Regulation DOI Open Access
Zhiguang Zhu, Akbar Bashir, Xiaohong Wu

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 23, 2024

Abstract Environmental heat influx often limits the effectiveness of radiative cooling materials, particularly in wearable applications where thermal comfort is paramount. This study introduces an innovative solution for personal management through phase change (RC‐PC) fiber membranes. Fabricated by coaxial electrospinning, these membranes combine a poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) and tetraethyl orthosilicate (TEOS) composite shell, encapsulating n ‐octadecane as core material. The demonstrate exceptional optical performance, with solar reflectivity 95.0% emissivity 88.6% within atmospheric window, effectively minimizing ambient absorption. ‐octadecane‐infused fibers (0.3 mL h −1 C18@TEOS/PHBV) exhibit enthalpy 88.3 J g , reducing heating rates improving ≈1 °C at dawn. Under typical radiation (939.5 W m −2 ), provide average power 89.0 peaking 95.3 . Notably, they achieve reduction 5.1 under 550.2 maintaining temperatures significantly lower than conventional fabrics, differential 4.4 compared to medical protective clothing. These findings underscore potential RC‐PC sustainable, efficient management.

Язык: Английский

Процитировано

5

Adaptive photothermal management of smart window based on VO2 DOI
Boshi Wang, Tianyi Wang, Xiaohu Wu

и другие.

Applied Thermal Engineering, Год журнала: 2024, Номер unknown, С. 125389 - 125389

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

3

Polarization-Sensitive Long-Wavelength Infrared Narrowband Thermal Emitter for Anticounterfeiting DOI
Zhengji Wen, Xuan Zhang, Pengfei Wang

и другие.

ACS Applied Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

Процитировано

0

Photonic structures in multispectral camouflage: From static to dynamic technologies DOI
Cong Cheng, Jingchong Liu, Fuqiang Wang

и другие.

Materials Today, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Structural optimization of semitransparent power-generating window glass doped with core-shell nanoparticles DOI

Shuni Chen,

Yanming Guo, Chao Shen

и другие.

Energy, Год журнала: 2025, Номер unknown, С. 135539 - 135539

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0