A5073102371- Ferroelectric and Piezoelectric Materials
- Acoustic Wave Resonator Technologies
- Multiferroics and related materials
- Energy Harvesting in Wireless Networks
- Innovative Energy Harvesting Technologies
- Advanced Sensor and Energy Harvesting Materials
- Electronic and Structural Properties of Oxides
- Force Microscopy Techniques and Applications
- Advanced Thermoelectric Materials and Devices
- Ga2O3 and related materials
- Magnetic and transport properties of perovskites and related materials
- Ferroelectric and Negative Capacitance Devices
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Wireless Power Transfer Systems
- 2D Materials and Applications
- Advanced Condensed Matter Physics
- Machine Learning in Materials Science
- Physics of Superconductivity and Magnetism
- Gas Sensing Nanomaterials and Sensors
- Geophysics and Sensor Technology
- Advanced biosensing and bioanalysis techniques
- Advanced MEMS and NEMS Technologies
- Graphene research and applications
Hunan City University
2022-2023
Xiangtan University
2013-2021
Chinese Academy of Sciences
2019
Shenzhen Institutes of Advanced Technology
2019
Corning (United States)
2014
A combination of Fresnel law and machine learning method is proposed to identify the layer counts 2D materials. Three indexes, which are optical contrast, red-green-blue, total color difference, presented illustrate simulate visibility materials on Si/SiO2 substrate, algorithms, k-mean clustering k-nearest neighbors, employed obtain thickness database material test images via red-green-blue index. The results show that this can provide fast, accurate large-area property material. With...
BiCuSeO compound is a promising thermoelectric material, which has attracted many experimental studies through trial-and-error approaches to improve its performance by element doping, such that fast and efficient prediction of property for unexplored rarely explored doped-BiCuSeO highly desired. In this work, machine learning (ML) model predicting the ZT value M (Bi1-xMxCuSeO) been established via correlation analysis descriptors comparison among different ML approaches. The results show...
Abstract Barium zirconate titanate [Ba(Zr x Ti 1− )O 3 ] solid solutions are promising lead-free ferroelectric materials that have received substantial interest. Thermodynamic analysis based on phenomenological Landau–Devonshire theory is a powerful method for theoretical investigation of materials, but cannot be applied to Ba(Zr because there no thermodynamic potential. In this paper, potential (0 ≤ 0.3) constructed, and then carried out. The results accurately reproduce known phase...
The electrocaloric (EC) effect is promising for the next-generation solid-state refrigeration, yet it difficult to improve EC response near room temperature with either positive (PEC) or negative (NEC) alone. In this work, we propose and demonstrate a strategy that achieves coexistence of PEC NEC effects via electric-field-induced ferroelectric–ferroelectric phase transition in Ba(ZrxTi1−x)O3 solid solutions, while generally found around paraelectric–ferroelectric...
A multi-wavelength surface plasmon resonance (Dr-SPR) sensor consisting of three excitation wavelengths at 665 nm, 980 and 1480 nm has been demonstrated. The use not only provides penetration depths 186 570 1395 but also enables depth-resolving capability. To verify its capability, silica bead sizes 150 540 1860 were used to form monolayers with different thicknesses on the chip surface. It is found that Dr-SPR produces maximum response when size matches depth. demonstration a unique...
Phenomenological thermodynamic analysis is an important theoretical investigation method for ferroelectric materials, however, it cannot be implemented Ba(ZrxTi1−x)O3 due to the lack of potential coefficients. In this paper, we have constructed a phenomenological bulk Ba(Zr0.08Ti0.92)O3 single crystals, which reproduces three phase transition temperatures, dielectric and piezoelectric constants crystals well, suggesting that reliable. Then with appropriate modification applied predict misfit...
A nonlinear thermodynamic analysis is adopted to study the electrocaloric effect of BaxSr1−xTiO3 (BST) solid solutions. The results reveal that location maximum adiabatic temperature change ΔT can be shifted from a high room via tuning chemical composition x. Comparing properties BST with those values reported in other materials, it found x=0.7 shows large response over broad range near and possesses strength ΔT/ΔE∼1.978×10−6 K m/V due significant polarization respect temperature. This...
Since the rotational symmetry of an electric field induced by piezoresponse force microscopy (PFM) can be broken and tuned a scanning probe microscope (SPM) using multiple tips, double-tip PFM measurement method is proposed to quantitatively determine piezoelectric coefficient d33 at nanoscale, realized modulating spacing or voltage ratio between two SPM tips. Compared traditional single tip, measured agrees much better with intrinsic value.
Environmentally friendly lead-free K1-xNaxNbO3 (KNN) ceramics possess electromechanical properties comparable to lead-based ferroelectric materials, but cannot meet the needs of device miniaturization, and corresponding thin films lack theoretical experimental studies. To this end, we developed nonlinear phenomenological theory for materials study effects non-equiaxed misfit strain on phase structure, electrical response K0.5Na0.5NbO3 epitaxial constructed in-plane (u1-u2) diagrams. The...
Environmentally friendly lead-free K1-xNaxNbO3 (KNN) ceramics possess electromechanical properties comparable to lead-based ferroelectric materials but cannot meet the needs of device miniaturization, and corresponding thin films lack theoretical experimental studies. To this end, we developed nonlinear phenomenological theory for study effects non-equiaxed misfit strain on phase structure, properties, electrical response K0.5Na0.5NbO3 epitaxial films. We constructed in-plane (u1−u2)...
xPb(In1/2Nb1/2)O3-(1−x−y)Pb(Mg1/3Nb2/3)O3−yPbTiO3 (PIN–PMN–PT) bulks possess excellent electromechanical coupling and dielectric properties, but the corresponding epitaxial PIN–PMN–PT thin films have not yet been explored. This paper adopts a nonlinear thermodynamics analysis to investigate influences of misfit strains on phase structures, electrocaloric responses in films. The strain–temperature diagram was constructed. results reveal that may exist tetragonal c-, orthorhombic aa-,...