Article
Engineering, Chemical
Zhibo Tang, Lanqi Chen, Cong Qi, Zhen Tian
Summary: New composite magnetic Fe3O4/CNTs nanofluids were prepared through chemical co-sedimentation, which showed good photothermal efficiency and paramagnetic properties. The concentration and depth of the nanofluids were found to affect the photothermal efficiency, and the nanofluids demonstrated stable performance after several cycles.
Article
Thermodynamics
Kongxiang Wang, Yan He, Zhiheng Zheng, Jingqiong Gao, Ankang Kan, Huaqing Xie, Wei Yu
Summary: This study focuses on the application of ethylene glycol based TiN nanofluids in solar collectors and investigates the optical properties of the fluid as the temperature changes. Experimental results show that the heated nanofluids have stronger absorption capability, significantly improving the photothermal conversion efficiency of the collector.
APPLIED THERMAL ENGINEERING
(2021)
Review
Chemistry, Physical
Maryam Saeed, Rana Sami Ul Haq, Sohail Ahmed, Faisal Siddiqui, Jiabao Yi
Summary: This review paper explores the potential of carbon-based materials, including carbon nanotubes, reduced graphene oxide, and carbon fibers, for microwave absorption applications. It highlights their absorption properties and discusses the influence of various morphologies on absorption performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Green & Sustainable Science & Technology
Jia Zeng, Yimin Xuan
Summary: This study investigates the application features of flowing photonic nanofluids in direct solar-thermal conversion through multi-scale theoretical and experimental analysis. The study reveals the excellent solar-thermal conversion ability of photonic nanofluids at both microscopic and macroscopic levels, providing a detailed method and performance parameter reference for nanofluid selection and working condition adjustment.
Article
Energy & Fuels
Shang-Pang Yu, Tun-Ping Teng, Chia-Cing Huang, Hsiang-Kai Hsieh, Yi-Jia Wei
Summary: In this study, carbon-based nanofluids (CBNFs) were prepared and applied in the direct absorption solar collector (DASC). The thermal storage performance of water and different concentrations of CBNFs was evaluated, and it was found that CBNFs exhibited higher thermal storage capacity and system efficiency factor (SEF) compared to water in most cases. The results demonstrate the great potential of CBNFs in DASC.
Article
Thermodynamics
Zhijing Li, Ankang Kan, Kongxiang Wang, Yan He, Ni Zheng, Wei Yu
Summary: Direct absorption solar collectors (DASC) utilizing graphene-based nanofluids, such as single-layer graphene (SLG) and graphene oxide (GO), show enhanced solar absorption and photothermal conversion efficiency. The reverse radiation DASC (RI-DASC) mode presents a more uniform thermal field distribution and higher photothermal conversion efficiency compared to traditional DASC mode. Additionally, the addition of a small amount of SLG or GO significantly improves the photothermal conversion efficiency of the base fluid, with efficiency increasing with concentration.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Juanxuan Guo, Fangxian Wang, Shihao Li, Yuwei Wang, Xueshan Hu, Daoyuan Zu, Yongming Shen, Changping Li
Summary: The study demonstrates that the Ti3C2/[BMIM]BF4 nanofluid based on ionic liquid exhibits excellent light-to-heat conversion performance, and the performance increases with the increase of Ti3C2 mass ratio, solar concentration, and DASC height.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Materials Science, Multidisciplinary
Chen Firestein, Amir Shlivinski, Yakir Hadad
Summary: This study investigates the relationship between absorption efficacy and thickness of the Dallenbach layer, and uncovers hidden assumptions in Rozanov's derivation. New sum rules for LTI layer absorbers are introduced, relaxing the constraints on absorption.
Article
Chemistry, Physical
Disheng Liu, Pengpeng Mou, Qiyi Wei, Yang Xu, Gengping Wan, Guizhen Wang
Summary: In order to prolong the lifespan of electronic equipment and protect human health from electromagnetic pollution, lightweight microwave absorption materials (MAMs) with hydrophobicity and electrothermal properties need to be developed urgently. In this study, nanowires/nanohelices hybrid carbon (CNWs/CNHs) aerogels were fabricated by growing and carbonizing nanohelices in a bacterial cellulose (BC) matrix, forming a conductive network. The detailed structure and microwave absorption mechanism of the CNWs/CNHs aerogels were investigated systematically. The optimal CNWs/CNHs aerogels exhibited excellent microwave absorption intensity and broad absorption bandwidth, as well as self-cleaning function and good electrothermal conversion performance, making them suitable for practical applications in complex low-temperature environments.
Review
Materials Science, Multidisciplinary
Jingda Wen, Qian Zhao, Ruiguang Peng, Haoyang Yao, Yuchang Qing, Jianbo Yin, Qiang Ren
Summary: This article reviews the recent progress of water-based metamaterial absorbers, illustrating the mechanisms to achieve ultra-broadband, tunable, and multi-functional absorption, and discussing further development directions and potential novel applications.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Optics
Qi Yuan, Cuilian Xu, Jinming Jiang, Yongfeng Li, Yang Cheng, He Wang, Mingbao Yan, Jiafu Wang, Hua Ma, Shaobo Qu
Summary: A general and straightforward strategy is proposed to overcome the impedance mismatch in the design of electromagnetic absorbers, and the absorbing performance under different incident angles is demonstrated. The absorber shows high absorption rates over a wide range of frequencies, indicating potential applications in various fields.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Physical
Chang Liu, Zhihui Zeng, Jing Qiao, Qilei Wu, Wei Liu, Feng Gao, Jiurong Liu
Summary: This research efficiently utilizes sustainable cellulose nanofibril (CNF) to facilitate the preparation of ultralight, high-porosity carbon nanotube (CNT) hybrid aerogel-based electromagnetic wave (EMW) absorbers. CNF not only acts as a green surfactant to prevent CNT agglomeration, but also functions as a supporting matrix or binder to construct porous CNT-based aerogels. The resulting hybrid aerogels exhibit highly promising EMW absorption performance, outperforming other reported CNT-based EMW absorbers.
Review
Chemistry, Multidisciplinary
Sangjun Lee, Sangin Kim
Summary: In this review, various types of graphene-based perfect absorbers are discussed as a solution to the poor light absorption of pure graphene. Their operation principles, design requirements, recent progress, and potential applications are addressed. The importance of mirror-less perfect absorber design is emphasized due to simplified fabrication processes or enhanced tolerance for fabrication error.
APPLIED SCIENCES-BASEL
(2023)
Article
Nanoscience & Nanotechnology
Hengda Sun, Ying Zhang, Yue Wu, Chen Li, Guoke Wei, Jingwen Wang, Lie Liu, Shaolong Tang, Guangbin Ji
Summary: Microwave-absorbing materials with wide bandwidth and high absorptivity, such as the pyramid absorbing material prepared in this work, play an important role in over-the-air testing. The study achieved excellent microwave absorption performance using a high-frequency structure simulator and explored the absorption mechanism of the pyramid structure. This provides valuable research ideas and methods for future engineering applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Huizi Zheng, Haoming Sun, Zhipeng Zhang, Yudan Qian, Xiaolin Zhu, Jiao Qu
Summary: Microplastics globally accumulate in water and coexist with various toxic chemicals, posing a significant threat to human health. However, the combined cytotoxicity of microplastics and typical pollutants remains limited. This study introduces a sensitive electrochemical cell-based sensor for rapid and accurate evaluation of the individual toxicity of microplastics and their combined toxicity with other contaminants. The results show that the combination of polystyrene microplastic (PS) with bisphenol A (BPA), pentachlorophenol (PCP), and lead (Pb2+) exhibits an additive effect on cytotoxicity. Furthermore, the mechanism underlying the cytotoxicity of microplastics and the three pollutants is investigated, revealing the involvement of oxidative stress and cellular apoptosis. This study provides a valuable tool for toxicity detection of microplastics and typical pollutants, while elucidating the underlying mechanisms.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Physical
Sergii Burylov, Danil Petrov, Veronika Lackova, Katarina Zakutanska, Natalia Burylova, Alexey Voroshilov, Vyacheslav Skosar, Filippo Agresti, Peter Kopcansky, Natalia Tomasovicova
Summary: This paper presents complete theoretical and experimental studies on electrically and magnetically induced orientational transitions in suspensions of goethite nanorods in a nematic liquid crystal. Different types of samples with varied magnetic properties are prepared and observed. The magnetically induced transitions exhibit distinct orientational behaviors in the samples, with the compensated ferronematic requiring a higher magnetic field for the Freedericksz transition compared to pure nematic, and the magnetized ferronematic showing measurable response to magnetic fields even below the Freedericksz threshold.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Luca Zoli, Diletta Sciti, Elisa Sani
Summary: Novel ceramic nanoparticles of ZrB2 dispersed in ethanol exhibit appealing optical properties suitable for direct-absorption solar thermal collectors, opening up a new application field for Ultra-High Temperature Ceramics (UHTCs).
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Astronomy & Astrophysics
E. Vanzella, M. Castellano, P. Bergamini, M. Meneghetti, A. Zanella, F. Calura, G. B. Caminha, P. Rosati, G. Cupani, U. Mestric, G. Brammer, P. Tozzi, A. Mercurio, C. Grillo, E. Sani, S. Cristiani, M. Nonino, E. Merlin, G. Pignataro
Summary: This article investigates the strongly lensed Lyman continuum (LyC) galaxy Sunburst at a redshift of z = 2.37. The intrinsic properties of the system, such as its size, luminosity, and stellar mass, are characterized. The presence of a young massive star cluster (YMC) and its impact on the star formation rate, stellar mass surface density, and ionizing radiation are discussed. The article also highlights the importance of future facilities in studying magnified galaxies and bound star clusters across cosmic epochs.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Green & Sustainable Science & Technology
Laura Silvestroni, Claudio Capiani, Diletta Sciti, Elisa Sani
Summary: This study explores novel oxide-based ceramics for energy exploitation and saving by mixing black or rust coloring additives to conventional white zirconium oxide. It was found that even a small amount of pigment can significantly alter the optical spectrum. The absorptance of ZrO2 increased from 0.1 to 0.75 or higher in the colored materials. The thermal emittance and solar absorptance of the colored samples were compared to identify the most suitable composition for different applications and operating temperatures.
Article
Engineering, Multidisciplinary
Luca Zoli, Simone Failla, Elisa Sani, Diletta Sciti
Summary: This study investigates the optical properties of ultra-high temperature ceramic matrix composites (UHTCMCs) as high temperature solar absorbers. The results show that these materials have high solar absorptance and low thermal emittance, combined with structural damage tolerance and light weight, making them a promising alternative to traditional solar receivers.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Biochemistry & Molecular Biology
Stefano Fasolin, Simona Barison, Filippo Agresti, Simone Battiston, Stefania Fiameni, Jacopo Isopi, Lidia Armelao
Summary: New membranes based on ZrVTi and ZrVTiPd alloys were tested for hydrogen purification/separation. The results showed that partial substitution of palladium can decrease the environmental impacts of the membranes.
Article
Engineering, Aerospace
Roberta Licheri, Roberto Orru, Elisa Sani, Aldo Dell'Oro, Giacomo Cao
Summary: This study investigates the potential of sintered lunar regolith simulant for solar energy harvesting and thermal energy storage applications, finding that sintered pellets have higher solar absorptance and thermal emittance compared to pristine powders.
Article
Chemistry, Physical
Antonio Santagata, Maria Lucia Pace, Alessandro Bellucci, Matteo Mastellone, Eleonora Bolli, Veronica Valentini, Stefano Orlando, Elisa Sani, Simone Failla, Diletta Sciti, Daniele Maria Trucchi
Summary: Surfaces of commercial molybdenum plates were laser-textured to improve solar absorptance and selectivity for concentrated solar power conversion devices. The laser-induced nanotexturing enhanced light trapping capability and improved performance, with the highest quantity of oxides preserving the laser texturing most efficiently. These findings extend the applicability of laser treatments and have potential for sensing applications.
Article
Crystallography
Peter Bury, Marek Vevericik, Frantisek Cernobila, Natalia Tomasovicova, Milan Timko, Peter Kopcansky, Filippo Agresti, Simona Barison
Summary: A composite ferronematic system based on the nematic liquid crystal E7, doped with goethite magnetic nanoparticles, was investigated. The influence of magnetic nanoparticles on structural changes of ferronematic liquid crystals was studied using surface acoustic waves and the magneto-optical effect. The experimental results confirmed the decrease in threshold field and increase in transition temperature with increasing volume fraction of nanoparticles. The effect of nanoparticles' concentration on both total structural changes and magneto-optical behavior was also observed.
Article
Chemistry, Physical
Simone Barbarossa, Roberto Orru, Giacomo Cao, Andrea Balbo, Federica Zanotto, Elisa Sani
Summary: The optical properties of two members of High-Entropy Borides (HEBs) were evaluated for the first time in this study to assess their potential utilization in the thermal solar energy field. The results showed that these materials have intrinsic spectral selectivity and low thermal emittance, making them promising for high-temperature solar absorbers applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Filippo Agresti, David Cabaleiro, Laura Fedele, Stefano Rossi, Simona Barison
Summary: PCM emulsions or micro-nano-encapsulated into organic and inorganic shells have been studied to enhance the thermal capacity and efficiency of heat transfer liquids. In this work, RT21HC, a commercial PCM, was successfully nano-encapsulated into PMMA shells to obtain stable colloidal dispersions. The colloidal dispersions were characterized for microstructure, colloidal stability, rheological properties, heat capacity, and thermal diffusivity. The effect of incorporating nucleating agents into the nano-capsules to mitigate PCM crystallization supercooling was also investigated.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Elisa Sani, Maria Raffaella Martina, Javier P. Vallejo, Luis Lugo
Summary: This study aims to assess the stability, structural and optical properties of aqueous nanofluids containing boron carbide (B4C) and titanium carbonitride (TiCN), both as mono or hybrid nanodditives, for direct absorption solar collectors. The optical properties of the nanofluids were found to be significantly changed, making them promising for solar absorber applications. The dynamic viscosity of the nanofluids was also evaluated, and they were found to exhibit Newtonian behavior with minimal viscosity increase.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Multidisciplinary
Elisa Sani, Diletta Sciti, Simone Failla, Cesare Melandri, Alessandro Bellucci, Stefano Orlando, Daniele M. Trucchi
Summary: By using femtosecond laser machining, this study demonstrates the successful enhancement of solar absorptance in tantalum boride, which has significant implications for Concentrating Solar Power.
Article
Chemistry, Multidisciplinary
Simone Taraborelli, Simone Failla, Elisa Sani, Diletta Sciti
Summary: TiB2 is a material with high hardness and exceptional wear resistance, making it suitable for various fields. By using sintering additives, the sintering process can be improved and the mechanical properties can be enhanced. Through optimized process and tailored composition, an almost fully dense material with high hardness and fracture toughness can be obtained. Additionally, high-energy-milled TiB2 samples exhibit the highest spectral selectivity and solar absorptance.
Article
Physics, Fluids & Plasmas
David Cabaleiro, Sonia Losada-Barreiro, Filippo Agresti, Carolina Hermida-Merino, Laura Fedele, Luis Lugo, Simona Barison, Manuel M. Pineiro
Summary: This study focuses on preparing and characterizing phase change material nanoemulsions as thermal fluids with latent functionality. The results show that the formulated nanoemulsions have good stability and thermal reliability, effectively reducing subcooling and enhancing energy storage capacity.
