A5100339660- Iron-based superconductors research
- Rare-earth and actinide compounds
- Physics of Superconductivity and Magnetism
- Molecular Sensors and Ion Detection
- Luminescence and Fluorescent Materials
- Advanced Condensed Matter Physics
- Topological Materials and Phenomena
- X-ray Diffraction in Crystallography
- Quantum and electron transport phenomena
- Magnetic and transport properties of perovskites and related materials
- Crystallization and Solubility Studies
- Supramolecular Chemistry and Complexes
- Superconductivity in MgB2 and Alloys
- Magnetic properties of thin films
- Liquid Crystal Research Advancements
- Magnetic Properties and Applications
- Multiferroics and related materials
- Semiconductor materials and devices
- Superconducting Materials and Applications
- Inorganic Chemistry and Materials
- Microstructure and Mechanical Properties of Steels
- Magnetic Properties of Alloys
- Graphene research and applications
- Ferroelectric and Negative Capacitance Devices
- Solar and Space Plasma Dynamics
Huazhong University of Science and Technology
2014-2024
Wuhan National Laboratory for Optoelectronics
2011-2024
Shanghai Micro Satellite Engineering Center
2023
Collaborative Innovation Center of Advanced Microstructures
2021
Nanjing University
2021
Soochow University
2021
Chinese Academy of Sciences
2020
University of Science and Technology of China
2020
University of Science and Technology Beijing
2018
Hubei University of Technology
2016
We present a study of electric, thermal and thermoelectric response in noncollinear antiferromagnet ${\mathrm{Mn}}_{3}\mathrm{Sn}$, which hosts large anomalous Hall effect (AHE). Berry curvature generates off-diagonal (Righi-Leduc) (Nernst) signals, are detectable at room temperature invertible with small magnetic field. The electrical conductivities respect the Wiedemann-Franz law, implying that transverse currents induced by carried Fermi surface quasiparticles. In contrast to conventional...
Tetraphenylethylene pillar[6]arenes with an AIE effect were synthesized for the first time. The fluorescence of could be quenched much more and faster by TNT than other nitroaromatics including 2,4,6-trinitrophenol, which used to detect in air.
It was found for the first time that neutral amphiphilc tetraphenylethylene (TPE) derivatives showed an enhanced monomer emission and a decreased aggregate when they were included in cavity of γ-cyclodextrin. This result provided new insight into aggregation-induced (AIE) effect.
A neutral chiral receptor based on TPE cyclohexylbisurea was synthesized and could discriminate the enantiomers of many different kinds reagents, including acidic compounds, basic amino acids, even alcohols. The (1)H NMR spectra disclosed that ability recognition be ascribed to multiple hydrogen bonds CH-π interactions between urea enantiomer guest, which led selective aggregation with one two enantiomers. This result exhibited a great potential in discernment high-throughput analysis...
The identification of explosives is critical for analyzing the background terrorism activities and origin pollution aroused by explosives, but it a challenge to discriminate with very similar structure. Herein we report series TPE-based macrocycles an AIE effect 0.2–4 ppb level detection TNT among number nitro-aromatic compounds through fluorescence quenching in natural water sources, whereas contact mode approach using portable paper sensors exhibited high sensitivity at 1.0 × 10–13 M...
We report the successful fabrication of noncollinear antiferromagnetic D019 Mn3Ge thin films on insulating oxide substrates. The anomalous Hall effect and large parallel negative magnetoresistance that is robust up to 53 T are observed in films, which may provide evidence for recent theoretical prediction existence Weyl fermions Mn3Ge. More importantly, we integrate onto ferroelectric PMN-PT substrates manipulate longitudinal resistance reversibly by electric fields at room temperature,...
Whenever the elastic energy of a solid depends on magnetic field, there is magnetostrictive response. Field-linear magnetostriction implies piezomagnetism and vice versa. Here, we show that Mn3Sn, non-collinear antiferromanget with Weyl nodes, hosts large almost perfectly linear even at room temperature. The longitudinal transverse magnetostriction, opposite signs similar amplitude are restricted to kagome planes out-of-plane response negligibly small. By studying four different samples...
A novel imidazolium macrocycle based on bridged tetraphenylethylene (TPE) was synthesized. Because it bears the TPE units, this not only displays an aggregation-induced emission (AIE) effect but also exhibits monomer emission, which is very rare in AIE compounds. With aggregation of macrocycle, aggregate increases while decreases. It found that can form a stable 2:1 complex with C60, gives rise to quenching both and emission. Unexpectedly, exhibited higher efficiency than probably because...
A thermal tolerant stereo-complex poly-lactic acid (SC-PLA) can be made by mixing Poly-D-lactic (PDLA) and poly-L-lactic (PLLA) at a defined ratio. This environmentally friendly biodegradable polymer could replace traditional recalcitrant petroleum-based plastics. To achieve this goal, however, it is imperative to produce optically pure lactic isomers using cost-effective substrate such as cellulosic biomass. The roadblock of process that: 1) xylose derived from biomass un-fermentable most...
The temperature dependence of upper critical field μ0Hc2 Ca0.83La0.17FeAs2 and Ca0.8La0.2Fe0.98Co0.02As2 single crystals are investigated by measuring the resistivity for inter-plane (H//c) in-plane (H//ab) directions in magnetic fields up to 60 T. It is found that μ0Hc2(T) both H//c presents a sublinear with decreasing temperature, whereas curve H//ab has convex curvature gradually tends saturate at low temperatures. deviates from conventional Werthamer-Helfand-Hohenberg (WHH) theoretical...
A novel tetraphenylethylene imidazolium macrocycle was found to be able form an aggregate with a pyrophosphate anion in water, which gives characteristic aggregation-induced emission fluorescence.
We report measurements of the upper critical field ${H}_{\mathrm{c}2}$ as functions temperature $T$, polar angle $\ensuremath{\theta}$ (of direction with respect to crystallographic $c$ axis), and azimuthal $\ensuremath{\phi}$ relative $a$ axis within $ab$ plane) for Cr-based superconductor ${\mathrm{K}}_{2}{\mathrm{Cr}}_{3}{\mathrm{As}}_{3}$ a quasi-one-dimensional noncentrosymmetric crystal structure. confirm that anisotropy in ${H}_{\mathrm{c}2}(T)$ becomes inverse decreasing temperature....
The Fermi surface of elemental bismuth consists three small rotationally equivalent electron pockets, offering a valley degree freedom to charge carriers. A relatively magnetic field can confine electrons their lowest Landau level. This is the quantum limit attained in other dilute metals upon application sufficiently strong field. Here we report on observation another threshold never encountered before any solid. Above this field, Bempty, one or two valleys become totally empty. Drying up...
According to the characteristics of LEO space particles radiation environment China’s Fengyun No. 3 (FY-3) polar-orbiting meteorological satellites, in order monitor characteristics, and space–time distribution charged particle orbit space, it is proposed install a three-directional high-energy detector (HEPD) three vertical orthogonal directions FY-3E, so as carry out energy spectrum flux observation protons electrons satellite, namely, −X, +Y, −Z. The on-orbit detection data acquired by...
Abstract The electrical outputs of single-layer antiferromagnetic memory devices relying on the anisotropic magnetoresistance effect are typically rather small at room temperature. Here we report a new type based spin phase change in Mn-Ir binary intermetallic thin film composition within boundary between its collinear and noncollinear phases. Via piezoelectric strain, structure this composition-boundary metal is reversibly interconverted, leading to large nonvolatile room-temperature...
The ultrafast amorphization phenomenon induced by a single picosecond electric pulse was studied. RESET operations were performed on phase change memory cells with 50 nm and 150 thick Ge2Sb2Te5 layers self-built test system, respectively. of only 0.2 ns observed in cell. dependence resistance the amplitude investigated. Thermal simulations width 0.8 using finite element method compared. Experimental simulation results suggest that exhibits nonthermal nature.
A new [3 + 3] trimeric macrocycle, based on tetraphenylethylene having an aggregation-induced emission effect, could form a interdigitation molecular cage with big void by host–guest interactions. The accommodate two TNT molecules and detect at the 1.7 fg level per mL of air. Moreover, give permanent pores that had BET surface area 347 m2/g adsorb 7.8 wt % CO2 high CO2/N2 selectivity up to 32 (273 K, 1 bar).
Tetraphenylethylene (TPE) foldamers with double hairpin-turn linkers showing an aggregation-induced emission (AIE) effect have been synthesized for the first time. A crystal structure of a foldamer-TNT complex has obtained, enabling unprecedented direct observation interactions between TNT molecules and chromophores foldamer. Instead π-π stacking interactions, which often considered to be key mechanism in binding by chromophoric receptors, strong n-π nitro groups aromatic rings foldamer...
A tetraphenylethylene (TPE) derivative bearing two dimethylformamidine units was synthesized. The dihydrogen chloride salt of this TPE soluble in water and showed almost no emission. By addition phosphate anions, the could be transformed into monohydrogen salt, which barely emitted strong fluorescence through aggregation-induced emission (AIE), while many other anions not bring about a enhancement. Meanwhile, reversible by acid base alternately presence anion, led to turn-on turn-off....
A hydrogel could be formed by leaving a suspension of novel amphiphilic calix[4]arene in aqueous media to stand at room temperature through dissolution-reassembly process.
Significance Modest magnetic fields above <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mo>≈</mml:mo> </mml:math> 22 T in the underdoped cuprates were argued to destroy superconductivity and reveal a conventional metallic pseudogap ground state that hosts quantum oscillations. We perform high-magnetic field electrical resistivity torque measurements using low temperatures small applied measurement currents instead an unconventional vortex matter persists...