A5005475361- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Perovskite Materials and Applications
- Solid-state spectroscopy and crystallography
- Solid State Laser Technologies
- Inorganic Fluorides and Related Compounds
- Diamond and Carbon-based Materials Research
- Atomic and Subatomic Physics Research
- Lanthanide and Transition Metal Complexes
- Mechanical and Optical Resonators
- Gas Sensing Nanomaterials and Sensors
- Crystal Structures and Properties
- Quantum optics and atomic interactions
- Optical properties and cooling technologies in crystalline materials
- Advanced Condensed Matter Physics
- Electronic and Structural Properties of Oxides
- Advanced Chemical Physics Studies
- High-pressure geophysics and materials
- Photorefractive and Nonlinear Optics
- Quantum Information and Cryptography
- Silicon Nanostructures and Photoluminescence
- Quantum Mechanics and Applications
- Advanced Thermodynamics and Statistical Mechanics
- Quantum and electron transport phenomena
- Force Microscopy Techniques and Applications
University of Science and Technology of China
2016-2025
Hefei University
2014-2024
Chinese Academy of Sciences
2016-2024
Hefei National Center for Physical Sciences at Nanoscale
2014-2023
CAS Key Laboratory of Urban Pollutant Conversion
2014-2023
Fudan University
2023
Beijing Academy of Quantum Information Sciences
2023
Microscale (United States)
2021
National Synchrotron Radiation Laboratory
2021
Academia Sinica
2017
An optical temperature sensor and heater based on Yb<sup>3+</sup>/Tm<sup>3+</sup> co-doped Ba<sub>5</sub>Gd<sub>8</sub>Zn<sub>4</sub>O<sub>21</sub> phosphors.
A fundamental axiom of quantum mechanics requires the Hamiltonians to be Hermitian which guarantees real eigen-energies and probability conservation. However, a class non-Hermitian with Parity-Time ($\mathcal{PT}$) symmetry can still display entirely spectra. The Hermiticity requirement may replaced by $\mathcal{PT}$ develop an alternative formulation mechanics. series experiments have been carried out classical systems including optics, electronics, microwaves, acoustics. there are few...
The combination of real-time diagnosis and therapy in an YF<sub>3</sub>:Tm<sup>3+</sup>/Yb<sup>3</sup> up-converting platform with improved thermometry photo-thermal ability is achieved through optimizing doping dosages.
NaYF4: Nd³⁺ microprisms were synthesized by a hydrothermal method. The bands of near-infrared (NIR) luminescence originating from the 4F3/2, 4F5/2 and 4F7/2 levels ions in microcrystals measured under 574.8 nm excitation at various temperatures 323 to 673 K. fluorescence intensity ratios (FIRs) between any two three change monotonically with temperature agree prediction assuming thermal couplings. A large relative sensitivity 1.12% K⁻¹ 500K is reached FIR 4F3/2 levels. In addition,...
(a) Transmission electron microscopy images and (b) normalized up-conversion emission spectra of transparent Er<sup>3+</sup>-doped NaYb<sub>2</sub>F<sub>7</sub> GC680 at various temperatures from 300 to 773 K.
Abstract The measurement of the microwave field is crucial for many developments in technology and related applications. However, measuring fields with high sensitivity spatial resolution under ambient conditions remains elusive. In this work, we propose experimentally demonstrate a scheme to measure both strength orientation magnetic by utilizing quantum coherent dynamics nitrogen vacancy centres diamond. An angular 5.7 mrad 1.0 μT Hz −1/2 are achieved at frequency 2.6000 GHz, vectors...
In order to achieve reliable quantum-information processing results, we need protect quantum gates along with the qubits from decoherence. Here demonstrate experimentally on a nitrogen-vacancy system that by using continuous-wave dynamical decoupling method, might not only prolong coherence time about 20 times but also for duration of controlling time. This protocol shares merits retaining superiority prolonging and at same easily combining logic tasks. method can be useful in tasks where...
Temperature dependence of the green UC luminescence spectra NaYTiO<sub>4</sub>: 0.14Yb<sup>3+</sup>, 0.05Er<sup>3+</sup> under 980 nm excitation (the are normalized to most intense emission peak at 551 nm) and temperature-dependent sensitivity for present sample.
Pure beta-NaYF4:0.8%Pr3+ powder sample was synthesized by the hydrothermal method. The temperature dependence of fluorescence intensity ratio (FIR) emission bands corresponding to 3P1 --> 3H5 and 3P0 transitions measured in range 120 K 300 excited a 473 nm continuous wave (CW) laser. FIR on is well fitted with an exponential function effective energy difference obtained 457 cm(-1), which gives further absolute sensitivity 0.01352 K(-1) at K. monotonous increase high demonstrate that this...
The exceptional point, known as the non-Hermitian degeneracy, has special topological structure, leading to various counterintuitive phenomena and novel applications, which are refreshing our cognition of quantum physics. One particularly intriguing behavior is mode switch phenomenon induced by dynamically encircling an point in parameter space. While these switches have been explored classical systems, experimental investigation regime remains elusive due difficulty constructing...
Cr3+-activated persistent luminescent phosphors with a spinel structure are emerging materials in bio-imaging applications for their distinctive features of deep biotissue penetration and rechargeable near-infrared emission. To realize the long-term multicycle imaging purpose, reactivation using situ external light is an alternative strategy, apart from efforts on trap modulations host lattice. However, recharging high-energy ultraviolet /visible photons will result low activation efficiency...
Although first principles methods are gaining interest, the crystal field model is at present only practicable to analyze and simulate energy level structures of lanthanide ions (Ln(3+)) in hosts accuracy approximately 10 cm(-1). Three criteria suggested assess use parameters, especially from parametrization 4f(N) data sets for entire ion series, except Pm(3+). Systematic analyses have been performed upon most complete available Ln(3+) situated sites high symmetry crystals Cs(2)NaLnCl(6)....