Safety and Efficacy of a Novel Hemostatic Powder in Total Knee Arthroplasty.

This retrospective study evaluated the safety and efficacy of SURGICEL® Powder-Absorbable Hemostatic Powder (SP) made from oxidized regenerated cellulose (ORC) in total knee arthroplasty (TKA). Ninety-one patients who underwent TKA at Peking University Third Hospital between January 2024 and July 2024 were retrospectively analyzed. Hemostatic effectiveness was evaluated by comparing perioperative blood loss, hemoglobin (Hb) levels, hematocrit (HCT), and transfusion rates.

Origin of Reliable High-Power Performances of PbZrTiO-Pb(MnNb)O-Based Piezoelectric Ceramics.

High-power piezoelectric ceramics typically operate under severe conditions. This makes the accurate evaluation of their high-power performances through pure quasi-static parameters challenging. The 0.

Evolution of Ferroelectricity in SrBaNbO-BaTiO Solid Solution with a Strong Electrocaloric Effect.

In conventional knowledge, ferroelectric solid solutions were formed between members belonging to the same crystal structure family. Since both tungsten bronze and perovskite structures are constructed by connecting the corner-sharing oxygen octahedra, it offers a possibility for formatting an unusual solid solution between these two families. Herein, (1 - )SrBaNbO-BaTiO, (1 - )SBN-BT, solid solutions were synthesized and the solution mechanism was resolved from a structure viewpoint.

Pulsed hydraulic-pressure-responsive self-cleaning membrane.

Pressure-driven membranes is a widely used separation technology in a range of industries, such as water purification, bioprocessing, food processing and chemical production. Despite their numerous advantages, such as modular design and minimal footprint, inevitable membrane fouling is the key challenge in most practical applications. Fouling limits membrane performance by reducing permeate flux or increasing pressure requirements, which results in higher energetic operation and maintenance costs.

Structural Distortion-Modulated Magnetic and Dielectric Properties in Nonstoichiometric YbTiO Pyrochlore.

Rare-earth titanate pyrochlores have attracted considerable attention for their unique magnetic frustration. Among those compounds, YbTiO, a candidate for quantum spin ice, has been extensively studied in its magnetic ground state. However, works on its dielectric property and structure-property relationship lag far more behind.

Ultrahigh Energy Storage Density and High Efficiency in Lead-Free (BiNa)(FeTi)O-Modified NaNbO Ceramics via Stabilizing the Antiferroelectric Phase and Enhancing Relaxor Behavior.

Dielectric capacitors have attracted growing attention because of their important applications in advanced high power and/or pulsed power electronic devices. Nevertheless, the synergistic enhancement of recoverable energy storage density ( > 10 J/cm) and efficiency (η > 80%) is still a great challenge for lead-free dielectric bulk ceramics. Herein, by introducing complex perovskite compound (BiNa)(FeTi)O with a smaller tolerance factor into an NaNbO matrix (NN-BNFT), we have achieved and explored stable relaxor antiferroelectric ceramics with enhanced relaxor behavior.

Non-hydrostatic pressure-dependent structural and transport properties of BiCuSeO and BiCuSO single crystals.

High-pressure experiments usually expect a hydrostatic condition, in which the physical properties of materials can be easily understood by theoretical simulations. Unfortunately, non-hydrostatic effect is inevitable in experiments due to the solidification of the pressure transmitting media under high pressure. Resultantly, non-hydrostaticity affects the accuracy of the experimental data and sometimes even leads to false phenomena.

Realizing a ferroelectric state and high pyroelectric performance in antiferroelectric-oxide composites.

We report a robust room temperature ferroelectric (FE) state in (1 - x)Pb0.99Nb0.02[(Zr0.

MoTe p-n Homojunctions Defined by Ferroelectric Polarization.

Doped p-n junctions are fundamental electrical components in modern electronics and optoelectronics. Due to the development of device miniaturization, the emergence of two-dimensional (2D) materials may initiate the next technological leap toward the post-Moore era owing to their unique structures and physical properties. The purpose of fabricating 2D p-n junctions has fueled many carrier-type modulation methods, such as electrostatic doping, surface modification, and element intercalation.

Crossover from negative to positive magnetoresistance in SrCrWO/SrFeMoO superlattices.

SrCrWO/SrFeMoO (SCWO/SFMO) superlattices with 4, 6, 7, 10 periods (abbreviated as S-1, S-2, S-3, and S-4) were prepared on (0 0 1) SrTiO (STO) substrates by pulsed laser deposition. All superlattices show macroscopic ferromagnetic behavior, and the magnetization increases with increasing period. The S-1 superlattice demonstrates semiconductor-like temperature-dependent resistivity in the whole measuring temperature range and negative magnetoresistance of  -5.

Ultrahigh photoresponsivity MoS photodetector with tunable photocurrent generation mechanism.

Photodetectors with two-dimensional (2D) materials on a SiO/Si substrate have been extensively explored. However, these photodetectors often suffer from a large gate voltage and relatively low photoresponsivity due to the low efficiency light absorption of 2D materials. Here, we develop a MoS photodetector based on the AlO/ITO (indium tin oxide)/SiO/Si substrate with ultrahigh photoresponsivity of 2.

Significantly Enhanced Energy-Harvesting Performance and Superior Fatigue-Resistant Behavior in [001]-Textured BaTiO-Based Lead-Free Piezoceramics.

Energy-harvesting utilizing piezoelectric materials has recently attracted extensive attention due to the strong demand of self-powered electronics. Unfortunately, low power density and poor long-term stability seriously hinder the implementation of lead-free piezoelectrics as high-efficiency energy harvesters. For the first time, we demonstrate that tailoring grain orientations of lead-free ceramics via templated grain growth can effectively produce ultrahigh power generation performance and excellent endurance against electrical/mechanical fatigues.

Enhanced photocatalytic efficiency of CN/BiFeO heterojunctions: the synergistic effects of band alignment and ferroelectricity.

As one of the most promising photocatalysts, graphitic carbon nitride (g-CN) shows a visible light response and great chemical stability. However, its relatively low photocatalytic efficiency is a major obstacle to actual applications. Here an effective and feasible method to dramatically increase the visible light photocatalytic efficiency by forming CN/BiFeO ferroelectric heterojunctions is reported, wherein the band alignment and piezo-/ferroelectricity have synergistic positive effects in accelerating the separation of the photogenerated carriers.

Zero Thermal Expansion in Magnetic and Metallic Tb(Co,Fe) Intermetallic Compounds.

Due to the advantage of invariable length with temperatures, zero thermal expansion (ZTE) materials are intriguing but very rare especially for the metals based compounds. Here, we report a ZTE in the magnetic intermetallic compounds of Tb(Co,Fe) over a wide temperature range (123-307 K). A negligible coefficient of thermal expansion (α = 0.

Giant positive magnetoresistance in half-metallic double-perovskite SrCrWO thin films.

Magnetoresistance (MR) is the magnetic field-induced change of electrical resistance. The MR effect not only has wide applications in hard drivers and sensors but also is a long-standing scientific issue for complex interactions. Ferromagnetic/ferrimagnetic oxides generally show negative MR due to the magnetic field-induced spin order.

Exceptionally High Piezoelectric Coefficient and Low Strain Hysteresis in Grain-Oriented (Ba, Ca)(Ti, Zr)O through Integrating Crystallographic Texture and Domain Engineering.

Both low strain hysteresis and high piezoelectric performance are required for practical applications in precisely controlled piezoelectric devices and systems. Unfortunately, enhanced piezoelectric properties were usually obtained with the presence of a large strain hysteresis in BaTiO (BT)-based piezoceramics. In this work, we propose to integrate crystallographic texturing and domain engineering strategies into BT-based ceramics to resolve this challenge.

Room-Temperature Multiferroics and Thermal Conductivity of 0.85BiFeTiMgO-0.15CaTiO Epitaxial Thin Films (x = 0.1 and 0.2).

Thin films of 0.85BiFeTiMgO-0.15CaTiO (x = 0.

Broadband gradient impedance matching using an acoustic metamaterial for ultrasonic transducers.

High-quality broadband ultrasound transducers yield superior imaging performance in biomedical ultrasonography. However, proper design to perfectly bridge the energy between the active piezoelectric material and the target medium over the operating spectrum is still lacking. Here, we demonstrate a new anisotropic cone-structured acoustic metamaterial matching layer that acts as an inhomogeneous material with gradient acoustic impedance along the ultrasound propagation direction.

Spin-Glass-Like Behavior and Topological Hall Effect in SrRuO/SrIrO Superlattices for Oxide Spintronics Applications.

The heterostructure interface provides a powerful platform for exploring rich emergent phenomena, such as interfacial superconductivity and nontrivial topological surface states. Here, SrRuO/SrIrO superlattices were epitaxially synthesized. The magnetic and magneto-transport properties of these superlattices were characterized.

Temperature dependent structures and properties of Bi0.5Na0.5TiO3-based lead free piezoelectric composite.

The thermal depolarization around 100 °C of the Bi0.5Na0.5TiO3-based piezoelectric solid solutions leads to the disappearance of macroscopic ferroelectric/piezoelectric properties and remains a long-standing obstacle for their actual applications.