Danfeng Li
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View article: Evidence for nodal superconductivity in infinite-layer nickelates
Evidence for nodal superconductivity in infinite-layer nickelates Open
Infinite-layer nickelates present a new family of potential unconventional superconductors. A key open question is the superconducting pairing symmetry. We present low-temperature measurements of the magnetic penetration depth in optimally…
View article: Establishment of a Pseudovirus-Based Golden Hamster Model for the Attachment and Entry Stages of Hendra Virus Infection and Evaluation of Protective Immunity
Establishment of a Pseudovirus-Based Golden Hamster Model for the Attachment and Entry Stages of Hendra Virus Infection and Evaluation of Protective Immunity Open
Objective: Establish an in vivo evaluation model focused on the attachment and entry stages of Hendra virus infection for protective immunity assessment. Methods: A golden hamster infection model based on recombinant Hendra-F/G pseudovirus…
View article: Robust field re-entrant superconductivity in ferromagnetic infinite-layer rare-earth nickelates
Robust field re-entrant superconductivity in ferromagnetic infinite-layer rare-earth nickelates Open
Superconductivity and ferromagnetism are naturally competing, while their interplay can give rise to exotic quantum phases, such as triplet pairing, exemplified by heavy-fermion compounds like UTe$_2$, where magnetic fluctuations stabilise…
View article: Thermoelectricity evidence for quantum criticality in clean infinite-layer nickelate films
Thermoelectricity evidence for quantum criticality in clean infinite-layer nickelate films Open
We investigate the Seebeck coefficient ($S$) in infinite-layer nickelate films with different disorder levels. The disordered NdNiO$_{2}$ film exhibits a flat $S/T$ curve, whereas cleaner samples display a logarithmic divergence with decre…
View article: Dual Optimization via Doping PCBM with Diamine for Efficient Pure‐Iodide Wide‐Bandgap Perovskite Solar Cells
Dual Optimization via Doping PCBM with Diamine for Efficient Pure‐Iodide Wide‐Bandgap Perovskite Solar Cells Open
The excellent photostability of pure‐iodide wide‐bandgap (WBG) perovskite solar cells (PSCs) makes them ideal candidates for tandem and indoor photovoltaics. However, the efficiency is significantly restricted by interfacial charge transfe…
View article: A Survey of Large Language Models in Mental Health Disorder Detection on Social Media
A Survey of Large Language Models in Mental Health Disorder Detection on Social Media Open
Mental disorders represent a critical global health challenge, and social media is increasingly viewed as a vital resource for real-time digital phenotyping and intervention. To leverage this data, large language models (LLMs) have been in…
View article: Understanding ion migration suppression in all-inorganic mixed halide perovskites via tin-lead alloying
Understanding ion migration suppression in all-inorganic mixed halide perovskites via tin-lead alloying Open
All-inorganic perovskites are advantageous in terms of improved thermal stability compared to organic-inorganic counterparts. However, the ion migration-induced hysteresis significantly undermines the long-term operational stability of all…
View article: Development of a neutralization assay and bioluminescent imaging mouse model for Dehong virus (DEHV) using a pseudovirus system
Development of a neutralization assay and bioluminescent imaging mouse model for Dehong virus (DEHV) using a pseudovirus system Open
Dehong virus (DEHV) is an emerging filamentous virus of considerable interest. However, research involving DEHV remains limited, and no suitable models exist to investigate its pathogenicity or transmission. In this study, we developed an …
View article: Enhanced Superconductivity and Mixed-dimensional Behaviour in Infinite-layer Samarium Nickelate Thin Films
Enhanced Superconductivity and Mixed-dimensional Behaviour in Infinite-layer Samarium Nickelate Thin Films Open
Rare-earth infinite-layer nickelates represent an emerging class of unconventional superconductors, with materials synthesis largely limited to early lanthanide compounds. Here, we report the synthesis and characterization of phase-pure su…
View article: Macrophage-derived mitochondria-rich extracellular vesicles aggravate bone loss in periodontitis by disrupting the mitochondrial dynamics of BMSCs
Macrophage-derived mitochondria-rich extracellular vesicles aggravate bone loss in periodontitis by disrupting the mitochondrial dynamics of BMSCs Open
The transfer of mitochondria to BMSCs via MEVs exacerbates alveolar bone resorption through LCN2/OMA1/OPA1 signaling in periodontitis. Inhibition of LCN2 alleviates inflammatory bone loss, suggesting a promising therapeutic strategy for pe…
View article: Establishing an Evidence-Based System for Cosmetic Safety and Efficacy Evaluation
Establishing an Evidence-Based System for Cosmetic Safety and Efficacy Evaluation Open
In the era of the booming cosmetics industry, safety and efficacy evaluation have become crucial aspects in ensuring product quality and meeting consumer demands. The Chinese cosmetics market has witnessed rapid development. With an increa…
View article: Topochemical Synthesis and Electronic Structure of High-Crystallinity Infinite-Layer Nickelates on an Orthorhombic Substrate
Topochemical Synthesis and Electronic Structure of High-Crystallinity Infinite-Layer Nickelates on an Orthorhombic Substrate Open
Superconductivity in infinite-layer nickelates has stirred much research interest, to which questions regarding the nature of superconductivity remain elusive. A critical leap forward to address these intricate questions is through the gro…
View article: Gigantic-oxidative atomic-layer-by-layer epitaxy for artificially designed complex oxides
Gigantic-oxidative atomic-layer-by-layer epitaxy for artificially designed complex oxides Open
In designing material functionalities for transition metal oxides, lattice structure and d-orbital occupancy are key determinants. However, the modulation of these two factors is inherently limited by the need to balance thermodynamic stab…
View article: Electrode‐Dependent and Tunable Sub‐to‐Super‐Linear Responsivity in Mott Material‐Enabled Near‐Infrared Photodetectors for Advanced Near‐Sensor Image Processing
Electrode‐Dependent and Tunable Sub‐to‐Super‐Linear Responsivity in Mott Material‐Enabled Near‐Infrared Photodetectors for Advanced Near‐Sensor Image Processing Open
Brain‐like intelligence is ushering humanity into an era of the Internet of Perceptions (IoP), where the vast amounts of data generated by numerous sensing nodes pose significant challenges to transmission bandwidth and computing hardware.…
View article: Simulation of soil water movement and water utilization of shrub community in a gravel desert of arid northwestern China during twelve years
Simulation of soil water movement and water utilization of shrub community in a gravel desert of arid northwestern China during twelve years Open
Study region: A gravel desert in the middle reaches of the Heihe River Basin, northwestern China. Study focus: Lack of long-term monitoring of soil water and groundwater level (GL) limited accurately quantifying the interactions between so…
View article: Gigantic-oxidative atomic-layer-by-layer epitaxy for artificially designed complex oxides
Gigantic-oxidative atomic-layer-by-layer epitaxy for artificially designed complex oxides Open
In designing material functionalities for transition metal oxides, lattice structure and d-orbital occupancy are key determinants. However, the modulation of these two factors is inherently limited by the need to balance thermodynamic stab…
View article: Analysis of monoclonal antibodies to establish a universal IVRP method suitable for identifying quadrivalent HPV vaccines that can replace in vivo efficacy tests
Analysis of monoclonal antibodies to establish a universal IVRP method suitable for identifying quadrivalent HPV vaccines that can replace in vivo efficacy tests Open
Decades of human papillomavirus (HPV) L1-based virus-like particle (VLP) vaccines, produced using diverse expression systems and production processes, are in development to meet future global vaccination needs. Type-specific monoclonal ant…
View article: High valley-degeneracy electron gas at double perovskite - strontium titanate interface
High valley-degeneracy electron gas at double perovskite - strontium titanate interface Open
Emergent phenomena such as two-dimensional electron gas (2DEG) and interfacial superconductivity and ferromagnetism are generally built on the interface between insulating oxide thin films and substrates, e.g., LaAlO 3 /SrTiO 3 , where the…
View article: Valence-Ordered Thin-Film Nickelate with Tri-component Nickel Coordination Prepared by Topochemical Reduction
Valence-Ordered Thin-Film Nickelate with Tri-component Nickel Coordination Prepared by Topochemical Reduction Open
The metal-hydride-based "topochemical reduction" process has produced several thermodynamically unstable phases across various transition metal oxide series with unusual crystal structures and nontrivial ground states. Here, by such an oxy…
View article: Universal orbital and magnetic structures in infinite-layer nickelates
Universal orbital and magnetic structures in infinite-layer nickelates Open
We conducted a comparative study of the rare-earth infinite-layer nickelate films, RNiO2(R = La, Pr, and Nd), using resonant inelastic x-ray scattering (RIXS). We found that the gross features of the orbital configurations are essentially …
View article: The vortex-Nernst effect in a superconducting infinite-layer nickelate
The vortex-Nernst effect in a superconducting infinite-layer nickelate Open
We report measurements of the Nernst and Seebeck effects in Nd$_{1-x}$Sr$_x$NiO$_2$ thin films near the superconducting transition temperature, $T$ = 6.5 - 15 K. Our main result is the observation of a vortex-Nernst signal $S_{yx}(T,H)$ wi…
View article: Emergent electronic landscapes in a novel valence-ordered nickelate with tri-component nickel coordination
Emergent electronic landscapes in a novel valence-ordered nickelate with tri-component nickel coordination Open
The metal-hydride-based topochemical reduction process has produced novel thermodynamically unstable phases across various transition metal oxide series with unusual crystal structures and non-trivial ground states. Here, by such an oxygen…
View article: Effects of rare-earth magnetism on the superconducting upper critical field in infinite-layer nickelates
Effects of rare-earth magnetism on the superconducting upper critical field in infinite-layer nickelates Open
The search for superconductivity in infinite-layer nickelates was motivated by analogy to the cuprates, and this perspective has framed much of the initial consideration of this material. However, a growing number of studies have highlight…
View article: Tunable-wavelength photoluminescence of a flexible transition metal doped oxide phosphor thin film
Tunable-wavelength photoluminescence of a flexible transition metal doped oxide phosphor thin film Open
Near-infrared luminescence phosphors are key material basis to potential applications for light sources and optoelectronic devices. In particular, it is vital to tune the luminescent properties of these phosphors in a flexible and controll…
View article: Observation of Coulomb blockade and Coulomb staircases in superconducting Pr0.8Sr0.2NiO2 films
Observation of Coulomb blockade and Coulomb staircases in superconducting Pr0.8Sr0.2NiO2 films Open
Motivated by the discovery of superconductivity in the infinite-layer nickelate family, we report an experimental endeavor to clean the surface of nickelate superconductor Pr0.8Sr0.2NiO2 films by Ar+ ion sputtering and subsequent annealing…