A5100373659- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Crystal Structures and Properties
- Methane Hydrates and Related Phenomena
- Ferroelectric and Piezoelectric Materials
- Perovskite Materials and Applications
- Geological Formations and Processes Exploration
- Planetary Science and Exploration
- Geology and Paleoclimatology Research
- Luminescence Properties of Advanced Materials
- Astro and Planetary Science
- Nuclear Materials and Properties
- Plant Genetic and Mutation Studies
- Material Dynamics and Properties
- Diamond and Carbon-based Materials Research
- Building materials and conservation
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Fiber Optic Sensors
- Advanced X-ray Imaging Techniques
- Rare-earth and actinide compounds
- Nuclear Physics and Applications
- Mineralogy and Gemology Studies
- Acoustic Wave Resonator Technologies
- Satellite Communication Systems
Jilin Agricultural University
2025
State Key Laboratory of Superhard Materials
2022-2024
Jilin University
2022-2024
Deutsches Elektronen-Synchrotron DESY
2021-2024
GFZ Helmholtz Centre for Geosciences
2021-2024
University of Edinburgh
2024
Minjiang University
2024
University of Science and Technology of China
2014-2019
Natural few-layer graphene is unambiguously identified from the Chang'e-5 lunar soil samples, which serves as a new platform for investigating extraterrestrial bodies.
For a singlet–triplet coupled molecular system, the efficiency of forward and reverse intersystem crossing processes can be enhanced by reducing energy gap between singlet triplet excited states (ΔEST), thus prolonging exciton lifetimes. This has been proven beneficial for many emerging applications such as luminescence, optoelectronics, photonics. Here, strategy is proposed to create small ΔEST polymerizing fluorescent dye molecules, efficacy which justified density functional theory...
An experimental platform for dynamic diamond anvil cell (dDAC) research has been developed at the High Energy Density (HED) Instrument European X-ray Free Electron Laser (European XFEL). Advantage was taken of high repetition rate XFEL (up to 4.5 MHz) collect pulse-resolved MHz diffraction data from samples as they are dynamically compressed intermediate strain rates (≤10 3 s −1 ), where up 352 images can be collected a single pulse train. The set-up employs piezo-driven dDACs capable...
Abstract Hydraulic fracturing operations in unconventional reservoirs are increasingly being monitored with fiber-optic (FO) Distributed Acoustic and Temperature Sensing (DAS/DTS). In this paper, we discuss how a single well equipped fiber optics DAS can be used as diagnostic tool to better understand the completions program of three offset wells instrumented well. Strain measurements were initially conducted for seismic studies, then followed by fluid injections from monitoring placement...
Drought stress is one of the major adversity stresses affecting soybean (Glycine max [L.] Merr.) yield. Late embryogenesis abundant protein (LEA protein) a large family proteins widely distributed in various types organisms, and this class plays an important role protecting proteins, membrane lipids, lipids inside cell. The GmPM35 gene member LEA_6 subfamily. expression was significantly increased after drought soybeans. A subcellular localization assay confirmed that acts on cell membrane....
Abstract In this study, we have investigated the stability of CaCO 3 at high pressures and temperatures using synchrotron X‐ray diffraction in laser‐heated diamond anvil cells. Our experimental results shown that aragonite structure transforms into ‐VII ( P 2 1 / c ) 27 GPa 1,500 K with a negative Clapeyron slope −4.3(9) MPa/K. is stable between 23 38 2,300 post‐aragonite 42 1,400 K. Furthermore, it reacts stishovite, an abundant form SiO subducted oceanic crust, forming CaSiO ‐perovskite....
Abstract We investigated the combined effect of pressure and temperature on elasticity single‐crystal superhydrous phase B (Shy‐B) using Brillouin scattering X‐ray diffraction up to 12 GPa 700 K. Using obtained elasticity, we modeled anisotropy Shy‐B along slab geotherms, showing that has a low cannot be major cause observed in region. Modeled velocities show will shown as positive velocity anomalies at bottom transition zone. Once is transported topmost lower mantle, it exhibit seismic...
Abstract Knowledge of the elasticity high‐pressure ice is key to constructing internal structure various planetary bodies. Here, we present direct experimental constraints on single‐crystal with 0.5 mol/L (0.9 mol.%) NaCl up 98 GPa at 300 K. The change from ice‐VII dynamically disordered characterized by an obvious softening longitudinal and bulk moduli between 42.4 54 GPa. Further transition X ∼64 results in apparent pressure dependence for elasticity. Using obtained elasticity, our...
In this work, a calibration of ruby, samarium-doped strontium tetraborate (Sm2+: SrB4O7), and yttrium aluminum garnet (Sm3+: YAG) using Raman fluorescence spectra was conducted within the temperature range 296–850 K pressure 0–55 GPa. The obtained can be applied independently for high-temperature or high-pressure conditions described as unit form P = (A′/B′) × [(λ/λT)B′ − 1] with A′ A (296 K) + A1 (T 296) A2 296)2, B′ B(296 B1 – 296), λT ΔλT, where specific parameters are provided in main...
Abstract Phase stability and elasticity of ammonia hydrate have been studied using Raman spectroscopy Brillion scattering in diamond-anvil cells up to 53 GPa at 300 K. Here we established the high-pressure phase diagram three different compositions, including monohydrate (AMH, NH3·H2O), dihydrate (ADH, NH3·2H2O), trihydrate (ATH, NH3·3H2O). In contrast previous experimental results, our Brillouin measurements K shown that all hydrates start dehydrate 2.1–2.2 GPa. Dehydration leads formation...
Silicate glass has been used as an analog for silicate melts to understand the nature of dense magmas in Earth’s mantle. To effect Al2O3 on sound velocity and structure MgSiO3 glass, this study, combined with Brillouin scattering diamond anvil cells (DACs), acoustic MgSiO3∙5 mol%Al2O3 (MA1) MgSiO3∙24.5 (MA2) were measured up 20 42 GPa, respectively. Our studies show that incorporation could increase glass. Using obtained velocities, bulk shear moduli (KS, G), density (ρ) Poisson’s ratio (ν)...
Abstract In this study, we have determined the combined effect of pressure and temperature on compressional-wave velocity (VP) Ne up to 53 GPa 1100 K using Brillouin scattering in externally heated diamond-anvil cells. The phase transition from supercritical fluid solid was observed cause a 10.5–11% jump VP, magnitude VP contrast across increases with temperature. addition, an abnormal reduced increase rate at both 800 before phase. exhibits nonlinear all investigated temperatures. elevating...
Abstract Dense hydrous magnesium silicates (DHMSs) with large water contents and wide stability fields are a potential H2O reservoir in the deep Earth. Al-bearing superhydrous phase B (shy-B) wider field than Al-free counterpart can play an important role understanding transport Earth’s transition zone topmost lower mantle. In this study, nominally two different shy-B samples 0.47(2) 1.35(4) Al atoms per formula unit (pfu), were synthesized using rotating multi-anvil press. Their...
Abstract Saline water is a common fluid on the Earth‘s surface and in ice planets. Potassium chloride (KCl) salt expected to be ubiquitous solute Universe; however, few studies investigated behavior of KCl‐H 2 O system at high pressures temperatures. In this study, powder single‐crystal X‐ray diffraction (SC‐XRD), Raman Brillouin scattering combined with diamond anvil cells were used investigate phase relation for different KCl concentrations 0–4 GPa 298–405 K. The results demonstrate that...
Abstract In this study, we investigated the phase stability of Al‐free and Al‐bearing superhydrous B (shy‐B) up to 55 GPa 2500 K. comparison with shy‐B, incorporation 11.7 wt.% Al 2 O 3 in shy‐B expands by ∼400–800 K at 20–30 GPa. The determined dehydration boundary for D indicates that it could be present even normal mantle geotherm conditions 30–40 Up 23.8 mol.% can dissolved into structures akimotoite bridgmanite as a result decomposition reactions between 20 40 Results further...
Strontium titanate (SrTiO 3 ) is a typical perovskite-type ceramic oxide and studying its high-pressure phases are critical to understand the ferroelastic phase transition. SrTiO also can be used as an important analog of davemaoite (CaSiO compositional velocity structure Earth’s interior. However, studies on cubic-to-tetragonal transition pressure elastic properties remain unclear for . Here, we investigate elasticity single-crystal by Raman Brillouin scattering combined with diamond anvil...
Understanding the phase behavior and structural properties of salt water at high pressures is essential for understanding dynamics physical characteristics icy planets. In this study, we employed high-pressure experimental ab initio simulation techniques to investigate impact $\mathrm{CaC}{\mathrm{l}}_{2}$ on structure ice VII. Our findings reveal that 1.8 mol% can be incorporated into VII above 10 GPa. This $\mathrm{CaC}{\mathrm{l}}_{2}$-bearing (Cb VII) exhibits a lower O-H stretching...