Article
Materials Science, Ceramics
Charles Le Losq, Barbara Baldoni
Summary: The researchers extended the composition range of the i-Melt machine learning greybox model to accurately predict properties of glass-forming melts in the CaO-MgO-K2O-Na2O-Al2O3-SiO2 system. These properties include viscosity, entropy, liquidus and glass transition temperatures, heat capacity, density, refractive index, Abbe number, elastic modulus, coefficient of thermal expansion, and Raman spectra.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Physical
Yang Sui, Yi Cui, Peng Wei, Chuanbo Cong, Xiaoyu Meng, Hai-Mu Ye, Qiong Zhou
Summary: Considering the molar mass as an intrinsic property, increasing the molar mass also increases the number of entanglements per chain in ultra-high molecular weight polyethylene (UHMWPE), making it difficult to process. To address this, TiO2 nanoparticles with different characteristics were dispersed in UHMWPE solutions to disentangle the molecular chains. The resulting UHMWPE/TiO2 composites exhibited improved processability and mechanical properties compared to pure UHMWPE.
Article
Chemistry, Physical
Andrzej A. Grzybowski, Alexander R. Lowe, Bernadeta Jasiok, Miroslaw Chorazewski
Summary: In this paper, thorough analyses of volumetric and viscosity data for six oils have been conducted, investigating their thermodynamic and dynamic properties. The study explores the intersection and inflection points in the temperature-pressure relations of these oils, revealing their distinct characteristics and behaviors, which contribute to a better understanding and further research on the physicochemical properties of oils.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Luciana D'Urso, Maria Rosaria Acocella, Felice De Santis, Gaetano Guerra, Roberto Pantani
Summary: Biodegradable polymers, particularly poly(L-lactic acid) (PLLA), are attracting attention as an alternative to oil-based materials. However, PLLA has processing limitations due to slow melt crystallization kinetics. This study proposes the use of carbon-based nanofillers to overcome these limitations and improve the crystallization behavior of PLLA.
Review
Materials Science, Multidisciplinary
Takehiko Ishikawa, Paul-Francois Paradis, Chihiro Koyama
Summary: Conventional methods are ineffective for processing high melting temperature oxides, resulting in limited knowledge of their thermophysical properties. The electrostatic levitation furnace on the International Space Station offers a solution by minimizing sample deformation and internal flows, allowing for more accurate measurements of thermophysical properties.
FRONTIERS IN MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Raquel Sanchez Diaz, Jong-Ryul Park, Leona L. Rodrigues, Paul D. Dalton, Elena M. De-Juan-Pardo, Tim R. Dargaville
Summary: This study introduces a rapid and efficient system to adapt commercially available polymers for melt electrowriting (MEW) for the fabrication of micro-fibrous scaffolds. By pre-treating PLCL at 150 degrees C for 24-48 h, it can be printed into scaffolds at 110 degrees C with fiber diameters of 14-40 μm, becoming the first low-temperature MEW scaffolds of its kind. This approach requires no modification of the MEW machine and can be readily adopted by any MEW user with minimal polymer manipulation.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Mechanical
Kiana Fahimi, Lutz Maedler, Nils Ellendt
Summary: Rayleigh's equation has been used to determine surface tension of oscillating droplets. This study proposes a drop-on-demand droplet generator to create oscillating molten metal droplets for measurement. Extensive numerical simulations were performed to investigate the effect of gravity, initial velocity, and initial deformation on droplet oscillation. This generator allows for the creation of thousands of droplets in a single experiment with shorter exposure time to contamination. Moreover, the adjustable nozzle size provides flexibility in droplet size and affects the validity range of Rayleigh's method. The surface tension of molten copper in an argon atmosphere was determined to validate the method.
EXPERIMENTS IN FLUIDS
(2023)
Article
Engineering, Electrical & Electronic
Ting-Ting Zhang, Gui-Xu Xie, Guo-Ting Cheng, Si-Heng Chen, Dong-Yang Zhu, Yu-Rui Zhang, Wen-Peng Han, Dong Chen, Yun-Ze Long
Summary: The study discovered that the liquid alloy Ga-In-Sn exhibits superconducting properties at low temperatures, with a critical temperature of 6.28K. The addition of zinc reduces the critical temperature to 6.06K. Furthermore, the alloy shows a change from superconductivity to a normal state at temperatures higher than the critical temperature, and the magnetic susceptibility is improved with the addition of zinc. Therefore, this research on the superconductivity of liquid metals holds significance as it opens up possibilities for further exploration of their physical properties and applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Deqiang Yin, Chaochao Dun, Huisheng Zhang, Zheng Fu, Xiang Gao, Xianliang Wang, David J. Singh, David L. Carroll, Yang Liu, Mark T. Swihart
Summary: Advances in crystal phase and shape engineering of binary or ternary copper telluride nanocrystals have been achieved using a colloidal hot-injection approach. The morphology of the NCs can be controlled by preferential growth of specific crystalline facets. In addition, temperature dependent thermoelectric properties of metal telluride nanostructure thin films have been studied.
Article
Engineering, Electrical & Electronic
Zilin Wang, Yunfan Shi, Zheyao Wang
Summary: This paper introduces a new method for Cu-Cu bonding without CMP and annealing, using a sacrificial Sn layer. The method involves three steps: reflowing a Cu-Sn bump at 250°C with redox gases to change the Sn layer from solid to porous, performing pre-bonding at 200°C to transform the porous Sn to porous Cu-Sn intermetallic compounds (IMCs), and performing final bonding at 250°C with formic acid gas sweeping to convert Cu-Sn bonding to Cu-Cu bonding. This method has successfully achieved high bonding strength and high yield in bonding Cu bumps with a diameter of 5 μm and a pitch of 25 μm.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Chemistry, Physical
Maria Jose Tenorio, Inmaculada Suarez, Julia D. Magdaleno, Miguel A. Gonzalez, Baudilio Coto
Summary: Oil mixtures are complex systems with many variables, such as composition and compound nature, making their study challenging. To simplify the study, simpler mixtures are used as models, such as hydrocarbon mixtures to describe crude oil behavior. Experimental data on density and viscosity for binary and ternary mixtures have been obtained, and viscosity models have been checked and modified to analyze the dependence on temperature, composition, and pyrene association. The modified Ratcliff and Krieger models showed excellent agreement with experiments.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Baicheng Mei, Zachary E. Dell, Kenneth S. Schweizer
Summary: In this study, a segmental scale force level theory was constructed to describe the unusual dynamics of globally compact unconcatenated ring polymer solutions and melts. Predictions include the existence of unentangled Rouse, weakly caged, and activated regimes, with the barrier of the activated regime scaling linearly with N. Comparisons with simulation data showed good agreement and predictions were made for the conditions required to observe a macromolecular glass transition in the laboratory and on the computer.
Article
Medical Laboratory Technology
Duncan Andrew, Robertson Gail, Bramwell Morag, Raja Kishor
Summary: This study aimed to establish appropriate reference intervals for copper and zinc concentrations in serum that can be used by other laboratories. The effects of various variables on serum concentrations of copper and zinc were also assessed. After controlling for these variables, age and gender-related reference intervals were calculated.
CLINICA CHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Xinyi Zhang, Xiaoming Li, Shuzhong Wang
Summary: This study aimed to improve the recovery efficiency of nickel metal and reduce smelting energy consumption by analyzing the impact of adding B2O3 on the melting characteristics of nickel flash melting slag and the separation efficiency of slag and matte. The findings revealed that adding B2O3 reduced the melting temperature of the slag system and enhanced the flow characteristics of the slag. Optimal separation conditions were determined through experimental investigations and the response surface method. The results demonstrate that adding B2O3 can effectively mitigate the influence of low-quality nickel ore on smelting and facilitate successful separation and recovery of matte and slag.
Article
Materials Science, Coatings & Films
Pattraporn Krajaisri, Rachakorn Puranasiri, Pongpak Chiyasak, Aphichart Rodchanarowan
Summary: Tin-copper alloys are widely used in various applications due to their superior performance in terms of corrosion resistance, lubrication, and visual appearance. Electrodeposition is a commonly used coating process for fabricating such alloys, but it often leads to whisker growth. This study investigates the effect of electrodeposition's pulsing current densities and temperatures on the electrodeposits of tin-copper alloys, and characterizes their microstructures, chemical compositions, crystalline phases, corrosion resistance, and adhesivity.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Thermodynamics
Sofia Polychroniadou, Konstantinos D. Antoniadis, Marc J. Assael, Ian H. Bell
Summary: In this study, a new correlation for the viscosity of krypton is presented, based on the entropy scaling approach. The correlation has low uncertainty and is valid for different temperature ranges and pressure limits of krypton.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Article
Thermodynamics
Richard A. Perkins, Marcia L. Huber, Marc J. Assael
Summary: New experimental data for the thermal conductivity of 1,1,1,2,2,3,3-heptafluoro-3-methoxypropane (RE-347mcc, HFE-7000) in vapor, liquid, and supercritical states were reported. A wide-range correlation for the thermal conductivity in different states was developed based on these data. The uncertainty of the experimental data varied with density, pressure, and temperature, with larger uncertainties in the critical region.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Article
Thermodynamics
Danai Velliadou, Konstantinos D. Antoniadis, Marc J. Assael, Marcia L. Huber
Summary: A new correlation for the viscosity of propylene glycol is presented in this study, which is based on critically evaluated experimental data. The correlation is designed to be used with an existing equation of state and is applicable in the temperature range of 243 K to 452 K and pressures up to 245 MPa. The estimated uncertainty is 4.5% at the 95% confidence level, except in the dilute-gas region where no measurements are available for comparison. Care should be taken when extrapolating the correlation outside the validated range.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Article
Thermodynamics
Danai Velliadou, Marc J. Assael, Marcia L. Huber
Summary: A new wide-ranging correlation for the viscosity of 1,1,1,2-tetrafluoroethane (R-134a) is presented based on critically evaluated experimental data, with low uncertainty in a certain range of temperature and pressure, and maintaining physical reasonability at pressures above 70 MPa. However, caution should be exercised when using the correlation outside of the validated range of the equation of state.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Article
Chemistry, Multidisciplinary
M. L. Huber, R. A. Perkins, M. J. Assael, S. A. Monogenidou, R. Hellmann, J. V. Sengers
Summary: This manuscript describes the development and adoption of new formulations for the thermal conductivity of heavy water by the International Association for the Properties of Water and Steam. The 2021 formulation incorporates critical enhancement and has a broader range of applicability compared to the previous formulation.
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA
(2022)
Article
Thermodynamics
Danai Velliadou, Konstantinos D. Antoniadis, Marc J. Assael, Marcia L. Huber
Summary: We present a correlation for the viscosity of difluoromethane based on experimental data, which is expressed in terms of temperature and density. The correlation is applicable within a specific temperature and pressure range and exhibits reasonable physical behavior. However, caution is advised when using it at higher pressures.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Article
Thermodynamics
Danai Velliadou, Konstantinos D. Antoniadis, Andreana N. Assimopoulou, Marc J. Assael, William A. Wakeham
Summary: This paper presents new measurements of the thermal conductivity of hexadecan-1-ol and octadecan-1-ol in both solid and liquid phases. The technique used is the transient hot-wire technique, which provides accurate and reliable results.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2022)
Correction
Thermodynamics
Sofia Sotiriadou, Eleftheria Ntonti, Danai Velliadou, Konstantinos D. Antoniadis, Marc J. Assael, Marcia L. Huber
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Thermodynamics
Sofia Sotiriadou, Eleftheria Ntonti, Danai Velliadou, Konstantinos D. D. Antoniadis, Marc J. J. Assael, Marcia L. L. Huber
Summary: We have developed a correlation for the viscosity of ethanol based on experimental data. It can be used in a wide temperature and pressure range, and has estimated uncertainties of 4.2% for the liquid and supercritical phase and 2% for the gas phase. Additionally, we propose another correlation for viscosity calculations at 0.1 MPa with an uncertainty of 2.3%.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Thermodynamics
Marc J. Assael, Konstantinos D. Antoniadis, Danai Velliadou, William A. Wakeham
Summary: This paper provides a summary of the necessary conditions for accurate measurement of fluid thermal conductivity using the transient hot-wire technique. The paper presents a prescription for implementing the method, based on its development over five decades. It demonstrates that transient hot-wire instruments can achieve thermal conductivity measurements with the smallest uncertainty to date (+/- 0.2%).
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Correction
Thermodynamics
Danai Velliadou, Katerina A. Tasidou, Konstantinos D. Antoniadis, Marc J. Assael, Richard A. Perkins, Marcia L. Huber
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Thermodynamics
Sofia Sotiriadou, Eleftheria Ntonti, Marc J. J. Assael, Marcia L. L. Huber
Summary: This paper presents new correlations for the viscosity and thermal conductivity of 1-hexene based on experimental data. The viscosity correlation is valid from the triple point to 580 K and up to 245 MPa pressure, while the thermal conductivity is valid from the triple point to 620 K and 200 MPa pressure. The correlations can be used with a recently published equation of state. The estimated uncertainties for viscosity and thermal conductivity are provided.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Thermodynamics
Danai Velliadou, Konstantinos D. Antoniadis, Andreana N. Assimopoulou, Marc J. Assael, Maria Carolina Margarido Sequeira, William A. Wakeham
Summary: New measurements of the thermal conductivity of n-docosane, n-tetracosane, 1,6-hexanediol, and 1,8-octanediol in both solid and liquid phases were conducted using the transient hot-wire technique. The technique is absolute and has an uncertainty of 1%. The standard deviations of the thermal conductivity measurements were determined for each substance in different temperature ranges.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
