Bioinspired Antiswelling Hydrogel Sensors with High Strength and Rapid Self-Recovery for Underwater Information Transmission.

Hydrogel-based sensors typically demonstrate conspicuous swelling behavior in aqueous environments, which can severely compromise the mechanical integrity and distort sensing signals, thereby considerably constraining their widespread applicability. Drawing inspiration from the multilevel heterogeneous structures in biological tissues, an antiswelling hydrogel sensor endowed with high strength, rapid self-recovery, and low swelling ratio was fabricated through a water-induced phase separation and coordination cross-linking strategy. A dense heterogeneous architecture was developed by the integration of "rigid" quadridentate carboxyl-Zr coordination bonds and "soft" hydrophobic unit-rich regions featuring π-π stacking and cation-π interactions into the hydrogels.

High-resolution direct magnetic resonance imaging fistulography with hydrogen peroxide for diagnosing anorectal fistula: A preliminary retrospective study.

Background: Fistula-in-ano is an abnormal tunnel formation linking the anal canal with the perineum and perianal skin. Multiple imagining methods are available to evaluate it, among which magnetic resonance imaging (MRI) is the most advanced noninvasive preoperative method. However, it is limited in its visualization function.

Triangular Margin: Reliable Imaging Feature of Fibrous Dysplasia in Long Bones?

Objective: To determine the utility of a triangular margin as an imaging diagnostic feature for fibrous dysplasia.

Materials And Methods: We retrospectively reviewed all surgically biopsied or managed benign and malignant bone tumors by a single orthopedic oncologist over 19 years (2003 to 2022). A musculoskeletal radiologist and an orthopedic oncologist, both with >10 years of experience, retrospectively evaluated all imaging in consensus.

Large screen size transparent display using spectrum expanded light field holograms.

Holographic displays have the potential to reconstruct natural light field information, making them highly promising for applications in augmented reality (AR), head-up displays (HUD), and new types of transparent three-dimensional (3D) displays. However, current spatial light modulators (SLMs) are constrained by pixel size and resolution, limiting display size. Additionally, existing holographic displays have narrow viewing angles due to device diffraction limits, algorithms, and optical configurations.

High space-bandwidth product DMD holographic display using gradient descent optimization.

Digital micromirror devices (DMDs), owing to their rapid refresh rates and ability to shape particular optical patterns, are key tools for holographic 3D near-eye displays. However, relying on a single-sideband (SSB) filter to eliminate crosstalk from zero-order and conjugate noise leads to an enormous decrease in the utilization of spatial bandwidth product (SBP). In this paper, we develop a new strategy for the binary hologram optimization framework to enable the full utilization of SBP of DMD holographic display by minimizing conjugate noise.