Article
Multidisciplinary Sciences
P. V. Ananth Subray, B. N. Hanumagowda, S. V. K. Varma, Mohammad Hatami
Summary: This study focuses on investigating the effect of shape factor of hybrid nanoparticles on convective heat and mass transfer of immiscible fluids in an inclined duct. Experimental and analytical results show that the shape factor significantly influences fluid flow and temperature distribution, with leaf-shaped particles performing better in the process.
SCIENTIFIC REPORTS
(2022)
Article
Thermodynamics
Masoumeh Azizi, Reza Tabatabaeekoloor, Ali Motevali, Seyed Reza Mousavi Seyedi
Summary: Considering the problems caused by non-renewable energy use, such as climate change and environmental destruction, it is necessary to utilize alternative and renewable energy sources, particularly solar power. This study analyzed the efficiency of a photovoltaic-thermal system with a parabolic trough concentrator and an eccentric receiver using different nano-fluids. The use of hybrid nano-fluids improved the filling coefficient and increased the electrical and thermal efficiencies, as well as the overall efficiency compared to pure water.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Chitra Boobalan, Sathish Kumar Kannaiyan
Summary: In this study, MXene nano-material is combined with silicone oil to enhance the thermal conductivity of nano-fluids. The thermal conductivity of the prepared MXene nanofluids is strongly influenced by temperature and MXene particle concentration. An Artificial Neural Network (ANN) model is developed to predict the thermal conductivity values based on temperature and nano-particle concentration inputs. The developed model shows satisfactory performance, with predicted thermal conductivity values matching well with experimental results.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Aerospace
Khitem Lahbacha, Sarah Sibilia, Gianmarco Trezza, Gaspare Giovinco, Francesco Bertocchi, Sergio Chiodini, Francesco Cristiano, Antonio Maffucci
Summary: This paper provides a study on the electro-thermal properties of commercial graphene nano-platelet films and discusses their application as heating elements in innovative de-icing systems for aerospace.
Article
Energy & Fuels
Arjun Venugopal, K. K. Anzil, Basil George Thomas, Jacob Thottathil Varghese
Summary: This paper proposes a novel approach to cool the interior region of motorcycle helmets using nano-enhanced organic Phase Change Material. The results show that the addition of nanoparticles can significantly improve the thermal conductivity of the material, and the nano-enhanced PCM incorporated helmet can effectively reduce the interior temperature, improving the comfort for motorcycle riders.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Neda Dehghan, Pedram Payvandy, Shahram Talebi
Summary: This study developed a new structural model to predict the effective thermal conductivity in knitted spacer fabrics and found that thickness, porosity, and density are the most effective parameters influencing thermal conductivity. The proposed model showed a good agreement (with R-2 = 0.91) with experimental values.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Physical
Soheyl Alidoust, Fatemeh AmoozadKhalili, Sajad Hamedi
Summary: This study investigates the parameters affecting the relative thermal conductivity (RTC) of SWCNT (15%)-Fe3O4 (85%)/Water Hybrid Ferro-Nanofluid (HFNF). The study examines the contributions of temperature and solid volume fraction (SVF) and reports a significant increase in RTC for HFNF compared to water. The study also uses response surface methodology (RSM) to predict the behavior of HFNF and finds a high correlation and RTC sensitivity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Nanoscience & Nanotechnology
Unal Degirmenci, Mesut Kirca
Summary: The study focuses on the hybridization of carbon-based nanomaterials and presents a new G-CNT hybrid structure. By examining the thermodynamic feasibility and conducting molecular dynamics simulations, the mechanical and thermal properties of the proposed structures are investigated. It is found that the properties can be modified by adjusting the geometric arrangement of CNTs and graphene nanoribbons, as well as employing filler units.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Engineering, Chemical
KeNan Liu, Yang Zhang, Fei Dai, Wei Sun
Summary: Experimental measurements and tests showed that loading MWCNT-TiO2 into SAE 20 W-40 can improve thermal conductivity, with a maximum increase of 24.42%. The number of dispersed nanoparticles has a significant effect on thermal conductivity.
Article
Green & Sustainable Science & Technology
Wael G. El-Sayed, Nour F. Attia, Ibrahim Ismail, Mohamed El-Khayat, Masanobu Nogami, M. S. A. Abdel-Mottaleb
Summary: Novel and efficient molten salt nanocomposites incorporating detonation nanodiamonds have been developed as heat transfer nano-fluids and thermal energy storage materials. These materials exhibit improved thermo-physical properties, including reduced melting point, enhanced thermal stability, significantly increased thermal conductivity and volume heat capacity, as well as enhanced thermal diffusivity.
Article
Materials Science, Ceramics
Yang Liu, Zhiyang Zhao, Yong Kong, Chen Chu, Jinqiong Tang, Jian Ren, Xiaodong Shen
Summary: This study investigates a low-cost, high-performance preparation method for nano-SiO2 composites, demonstrating their potential in thermal insulation. The introduction of SiC significantly improves the thermal insulation performance.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Ruchi Saxena, Nirnoy Basak, Pritam Chatterjee, Sumathi Rao, Arijit Saha
Summary: In this study, we theoretically investigate the thermoelectric properties of a hybrid structure composed of an inversion symmetry broken Weyl semimetal and an intrinsic Weyl superconductor. We explore interesting features of various physical quantities and analyze the effects of an interfacial insulating barrier on the thermoelectric response. We also compare this behavior with other Dirac material heterostructures and provide insights for the fabrication of mesoscopic thermoelectric devices based on Weyl semimetals.
Article
Chemistry, Multidisciplinary
Noelia Rivera, Jose Luis Viesca, Alberto Garcia, Jose Prado, Luis Lugo, Antolin Hernandez Battez
Summary: This study investigates the impact of oxidation on the thermophysical properties and cooling performance of ATFs, finding that molecular structure has a greater influence on thermal conductivity and heat capacity than on density and viscosity. ATFs formulated with API Group III base oils show better cooling performance. The use of figures-of-merit (FOMs) is recommended for comparing cooling performance instead of relying on a single property.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Yanru Chen, Kai Pang, Xiaoting Liu, Kaiwen Li, Jiahao Lu, Shengying Cai, Yingjun Liu, Zhen Xu, Chao Gao
Summary: The rapid development of high-power and high-frequency devices in electronics creates a need for advanced thermal interface materials (TIMs) with high thermal conductivity and structural stability. Previous attempts using silicone-based TIMs with highly thermally conductive fillers have struggled with structural stability in extreme conditions. In this study, we fabricated a flexible TIM called graphene foam roll (GFR) using hydroplastic foaming and interface strengthening methods. By impregnating graphene oxide (GO) into the GFR, we achieved enhanced interface bonding and superior structural integrity. The GFR-TIM exhibited both exceptional structural stability, maintaining mechanical stability after 10,000 cycles at 60% compressive strain, and high temperature resistance up to 500 degrees C, which has not been reported before. Additionally, the GFR-TIM demonstrated higher thermal conductivity (approximately 17.42 W/mK) compared to most commercial TIMs (5-10 W/mK). It can serve as an efficient heat-dissipation component for CPUs and has superior cooling efficiency compared to commercial TIMs. This work presents an advanced graphene-based TIM with excellent environmental adaptability and anti-fatigue properties, expanding its applications in extreme environments such as hypersonic vehicles, high-throughput satellites, and high-power radar systems.
Article
Physics, Multidisciplinary
Shunran Li, Xiaotong Li, Conrad A. Kocoj, Xiaoqin Ji, Shaofan Yuan, Eleni C. Macropulos, Constantinos C. Stoumpos, Fengnian Xia, Lingling Mao, Mercouri G. Kanatzidis, Peijun Guo
Summary: This study investigates the impact of organic spacers on excitons in 2DHPs through femtosecond pump-probe spectroscopy, revealing two distinct temporal response regimes. Vibrational excitation enhances biexciton emission, indicating the influence of vibrations on exciton confinement and exciton detrapping from defect states.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Rajalaxmi Sahoo, C. Reshma, D. S. Shankar Rao, C. V. Yelamaggad, S. Krishna Prasad
Summary: This study investigates the influence of the flexible spacer parity of a guest photoactive liquid crystalline dimer on the photonic bandgap features of the cholesteric and twist grain boundary smectic C phases of the host molecule. The results show that the parity of the photoactive dimer affects the width of the photonic bandgap and the blue-shift of the cholesteric phase. Additionally, the parity of the dimer also affects the layer spacing and two-dimensional periodicity of the liquid crystalline phases.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Sara Rozas, Alberto Gutierrez, Mert Atilhan, Alfredo Bol, Santiago Aparicio
Summary: This study presents a multiscale theoretical investigation on the use of bifunctional hydrophobic Deep Eutectic Solvent for carbon capture using tetrapropylammonium chloride, acetic acid, and ethanolamine. The characterization includes nanoscale analysis of CO2 absorption mechanisms and changes in liquid phase properties during gas capture.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Tabouli Eric Da-yang, Alhadji Malloum, Jean Jules Fifen, Mama Nsangou, Jeanet Conradie
Summary: In this study, the potential energy of different glycine tautomers and their interaction with Cu2+ cations was investigated. The results showed that the solvation medium and the presence of Cu2+ cations influenced the stability of glycine tautomers.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Xiaoliang Gou, Nan Ye, Qingqing Han, Junjie Cui, Long Yi Jin
Summary: In this study, amphiphilic rod-coil molecules with rigid DSA parts and flexible oligoether chains were designed and their assembly capacities were investigated. The morphology of the molecular aggregates was influenced by the pH of the solution and UV light, and the aggregates showed adsorption capacity for nitroaromatic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Shuang Liu, Liyan Shan, Cong Qi, Wenhui Zhang, Guannan Li, Bei Wang, Wei Wei
Summary: Optimizing the design of styrene-butadiene-styrene copolymer (SBS) is crucial for producing cost-effective SBS modifiers and improving road quality. This study examined the influence of SBS content and molecular structure on viscosity and compatibility. The results showed that the viscosity contribution of SBS is determined by its molecular structure and phase morphology.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Artem A. Petrov, Ekaterina A. Titova, Aydar A. Akhmadiyarov, Ilnaz T. Rakipov, Boris N. Solomonov
Summary: This work focuses on the thermochemistry of solvation of azeotropes. The enthalpies of dissolution of azeotropes in different mediums were determined, and the impact of the structure of the azeotropes on their properties in solution was discussed. A correlation between enthalpies of solvation and molar refraction was used to determine the vaporization enthalpies of azeotropes for the first time. The results were found to be consistent with literature data, obtained using direct and calculated methods. These findings contribute to the analysis of the structure-property relationships of azeotropes.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
L. V. Kamaeva, E. N. Tsiok, N. M. Chtchelkatchev
Summary: Understanding the correlations between liquids and solids allows us to predict the thermodynamic parameter range favorable for the formation of intriguing solid phases by studying liquids. In this study, we experimentally and theoretically investigated an Al-Cu-Co system within different composition ranges, and identified high-temperature solid phases. Our findings demonstrated the correlation between the boundaries of different solid phases and undercooling and viscosity in the concentration area.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
R. Aneesh Kumar, S. Jamelah Al-Otaibi, Y. Sheena Mary, Y. Shyma Mary, Nivedita Acharjee, Renjith Thomas, Renjith Raveendran Pillai, T. L. Leena
Summary: In this study, the interactions between doped and pristine coronenes and adenine nucleobases were investigated using Density Functional Theory. The optimal configurations, adsorption energies, charge transfer, and electrical properties of each complex were calculated. It was found that doped coronene had stronger adsorption strength and charge transfer compared to pristine coronene. The stability of the complexes was attributed to non-covalent interactions in the interactive region. The change in electrical conductivity of coronenes after adsorption suggested their sensitivity towards DNA bases. The predicted energy gap and prolonged recovery time for adenine-coronene configurations indicated the potential application of pristine/doped coronene in DNA detection.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Gang Zhou, Yongwei Liu, Biao Sun, Zengxin Liu, Cuicui Xu, Rulin Liu, Qi Zhang, Yongmei Wang
Summary: The CFD-DEM method was used to simulate the dust deposition pattern in the bronchus of anchor digging drivers, revealing the highest dust concentration in the vortex region of the working face. The study also found a positive correlation between dust particle diameter and bronchial deposition rate, and a negative correlation with alveolar deposition rate.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Yan Zhang, Yafei Luo, Lingkai Tang, Mingyan E, Jianping Hu
Summary: This study investigates the effects of different transition metal decorations on B12N12 nanocages on the adsorption properties of nitrosourea drugs using computational methods. The results reveal the presence of weak non-covalent interactions between metals and nanocages, and the interaction between drugs and nanocages plays a significant role in drug adsorption. Compared to free drugs, the adsorption of drugs on nanocages can facilitate electron transfer, reduce energy gaps and chemical hardness, indicating activity at the target site.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
C. I. Alcolado, J. Poblete, L. Garcia-Rio, E. Jimenez, F. J. Poblete
Summary: In this study, the selective oxidation of aromatic aldehydes was investigated using Ru(VI) as a catalyst and hexacyanoferrate (III) as a cooxidant in an alkaline medium. The reaction mechanism involves complex reaction orders for the oxidant and the aromatic aldehyde, while the reaction order for Ru(VI) is one. The proposed mechanism includes two catalytic cycles and the formation and decomposition of complexes. Quantitative structure-activity relationship analysis showed that deactivating groups in the para-position enhance the process.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Inez A. Barbieri, Marcos L. S. Oliveira, Franciele S. Bruckmann, Theodoro R. Salles, Leonardo Zancanaro, Luis F. O. Silva, Guilherme L. Dotto, Eder C. Lima, Mu. Naushad, Cristiano R. Bohn Rhoden
Summary: This study evaluated the adsorption of zolpidem on magnetic graphene oxide and synthesized magnetic graphene oxide adsorbents for zolpidem removal. The best magnetic nanoadsorbent was found to have a removal percentage of 87.07% at specific pH and temperature conditions. The results suggest that the removal of zolpidem is related to the surface chemistry of the adsorbent rather than the surface area of graphene oxide. The adsorbent showed excellent adsorption efficiency and magnetic behavior, making it a promising material for removing zolpidem from aqueous solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Hongyan Huang, Chunquan Li, Siyuan Huang, Yuling Shang
Summary: This study examines the sensitivity of the thermal conductivity of water-based alumina nanofluids to changes in concentration, sphericity, and temperature. The results show that volume fraction and temperature have a significant impact on the thermal conductivity, while sphericity also needs to be considered. A support vector machine regression model was created to analyze the sensitivity of the thermal conductivity to different parameters. The findings indicate that temperature, sphericity, and volume fraction are the most sensitive variables.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Correction
Chemistry, Physical
V. M. Pergamenshchik, T. Bryk, A. Trokhymchuk
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Valentyn Rudenko, Anatolii Tolochko, Svitlana Bugaychuk, Dmytro Zhulai, Gertruda Klimusheva, Galina Yaremchuk, Tatyana Mirnaya, Yuriy Garbovskiy
Summary: This paper reports on the synthesis, structural characterization, spectral and nonlinear-optical properties of glass nanocomposites made of glass forming ionic liquid crystals and nanoparticles. The study reveals that by exciting the nanocomposites within their absorption band, a control over effective optical nonlinearities can be achieved, allowing the modification of the magnitude and sign of the effective nonlinear absorption coefficient. The proposed strategy using metal-alkanoates based glass-forming ionic liquid crystals and nanoparticles shows great potential for the development of nanophotonics and plasmonics technologies.
JOURNAL OF MOLECULAR LIQUIDS
(2024)