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The diamond anvil cell is a powerful tool for investigating material behavior under extreme pressure and temperature, but achieving efficient and uniform heating remains challenging. This study introduces a ring-type furnace integrated into a gasket with a metal-insulator-metal sandwich structure, using tantalum (Ta) for heating, tungsten (W) for electrodes, and mica-ceramic powder for insulation, enabling stable and uniform heating up to 2000 K. A calibration method combining thermocouple data and finite element simulations ensures accurate temperature measurement. Experimental validation shows that the furnace maintains optical access for spectroscopic measurements and supports in situ conductivity characterization under high-pressure and high-temperature conditions. This advancement provides a robust platform for multi-physics experiments under extreme conditions.
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http://dx.doi.org/10.1063/5.0290862 | DOI Listing |
Rev Sci Instrum
September 2025
State Key Laboratory of High Pressure and Superhard Materials, Jilin University, Changchun, China.
The diamond anvil cell is a powerful tool for investigating material behavior under extreme pressure and temperature, but achieving efficient and uniform heating remains challenging. This study introduces a ring-type furnace integrated into a gasket with a metal-insulator-metal sandwich structure, using tantalum (Ta) for heating, tungsten (W) for electrodes, and mica-ceramic powder for insulation, enabling stable and uniform heating up to 2000 K. A calibration method combining thermocouple data and finite element simulations ensures accurate temperature measurement.
View Article and Find Full Text PDFSensors (Basel)
August 2025
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China.
Electric heating furnaces are widely used in industrial production and scientific research, where the quality of temperature control directly affects product performance and operational safety. However, precise control remains challenging due to the system's nonlinear behaviour, time-varying characteristics, and significant time delays. To overcome these issues, this paper proposes a composite control method that integrates an auto-encoder-based prediction model with fuzzy PI control.
View Article and Find Full Text PDFMaterials (Basel)
August 2025
College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, China.
Blast-furnace staves serve as critical protective components in ironmaking, requiring synergistic optimization of slag-coating behavior and self-protection capability to extend furnace lifespan and reduce energy consumption. Traditional integer-order heat transfer models, constrained by assumptions of homogeneous materials and instantaneous heat conduction, fail to accurately capture the cross-scale thermal memory effects and non-local diffusion characteristics in multiphase heterogeneous blast-furnace systems, leading to substantial inaccuracies in predicting dynamic slag-layer evolution. This review synthesizes recent advancements across three interlinked dimensions: first, analyzing design principles of zonal staves and how refractory material properties influence slag-layer formation, proposing a "high thermal conductivity-low thermal expansion" material matching strategy to mitigate thermal stress cracks through optimized synergy; second, developing a mechanistic model by introducing the Caputo fractional derivative to construct a non-Fourier heat-transfer framework (i.
View Article and Find Full Text PDFNanoscale
August 2025
Department of Engineering, University of Cambridge, JJ Thomson Avenue, CB3 0FA, Cambridge, UK.
We present a highly resource-efficient Close-Space Sublimation (CSS) approach, along with versatile one-step and two-step process designs, for the controlled synthesis of a wide range of tungsten (sub)oxide (WO) and tungsten disulfide (WS) nanostructures. By applying a simple sublimation model and leveraging graded CSS flux profiles in conjunction with experimentation, we accelerate process discovery and establish CSS flux and substrate temperature as key parameters governing nanostructural formation. Our CSS methodology enables the synthesis of W (sub)oxide structures within process times of less than 10 minutes, a significant improvement over the hour-long durations typically required in conventional hot-wall furnace systems.
View Article and Find Full Text PDFNanomaterials (Basel)
August 2025
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania.
Integrating two-dimensional transition-metal dichalcogenides with graphene is attractive for low-power memory and neuromorphic hardware, yet sequential wet transfer leaves polymer residues and high contact resistance. We demonstrate a complementary metal-oxide-semiconductor (CMOS)-compatible, transfer-free route in which an atomically thin amorphous MoS precursor is RF-sputtered directly onto chemical vapor-deposited few-layer graphene and crystallized by confined-space sulfurization at 800 °C. Grazing-incidence X-ray reflectivity, Raman spectroscopy, and X-ray photoelectron spectroscopy confirm the formation of residue-free, three-to-four-layer 2H-MoS (roughness: 0.
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