Abstract Polyimide aerogels have been extensively used in thermal protection domain because they possess a combination of intrinsic characteristics and unique features polyimide. However, polyimide still suffer significant thermally induced shrinkage at temperatures above 200 °C, restricting their application high temperature. Here, novel “double‐phase‐networking” strategy is proposed for fabricating lightweight mechanically robust hybrid aerogel by forming silica–zirconia‐phase networking...

Utilizing Unmanned Aerial Vehicles (UAV) and instance segmentation for construction site monitoring(such as machinery operation surfaces) offers a significant leap in management efficiency over traditional manual supervision methods. However, UAV-based remote sensing images, the subtle presence of image features resemblances among various operational surfaces make it difficult to segment instances. To address these challenges, this study proposed novel model based on YOLOv8-seg model. Given...

Quantum fluctuations give rise to Casimir forces between two parallel conducting plates, the magnitude of which increases monotonically as separation decreases. By introducing nanoscale gratings surfaces, recent advances have opened opportunities for controlling force in complex geometries. Here, we measure rectangular regimes not accessible before. Using an on-chip detection platform, achieve accurate alignment so that they interpenetrate is reduced. Just before interpenetration occurs,...

Thermal properties of materials are often determined by measuring thermalization processes; however, such measurements at the nanoscale challenging because they require high sensitivity concurrently with temporal and spatial resolutions. Here, we develop an optomechanical cantilever probe customize atomic force microscope low detection noise ≈1 fm/Hz1/2 over a wide (>100 MHz) bandwidth that measures dynamics ≈10 ns resolution, ≈35 nm sensitivity. This setup enables fast nanoimaging thermal...

Abstract This study presents a comprehensive analysis and improvement of the YOLOv8-n algorithm for object detection, focusing on integration Wasserstein Distance Loss, FasterNext, Context Aggravation strategies. Through detailed ablation study, each strategy was systematically evaluated individually collectively to assess its contribution model's performance. The results indicate that uniquely enhances performance, significantly increasing mAP reducing model complexity when all three are...

We study the Casimir torque between two metallic one-dimensional gratings rotated by an angle $\theta$ with respect to each other. find that, for infinitely extended gratings, energy is anomalously discontinuous at $\theta=0$, due a critical zero-order geometric transition 2D- and 1D-periodic system. This peculiarity of grating geometry does not exist intrinsically anisotropic materials. As remarkable practical consequence, finite-size per area can reach extremely large values, increasing...

Abstract Polyimide aerogel (PIA) can enable to withstand the extreme conditions in a great measure due their exceptional thermal stability and excellent mechanical toughness properties derived from rigid‐ring structures, which are rather promising alternatives terms of high‐performance protection materials for aerospace field. However, PIA usually suffers poor dimensional at high‐temperature atmosphere, accordingly leading into degradation macroscopic features, eventually restricting...

Micro-/nanocavities that combine high quality factor (

Whispering gallery modes (WGMs) in circularly symmetric optical microresonators exhibit integer quantized angular momentum numbers due to the boundary condition imposed by geometry. Here, we show that incorporating a photonic crystal pattern an integrated microring can result WGMs with fractional momentum. By choosing periodicity open bandgap band-edge lying between of two unperturbed ring, observe hybridized half-integer ($m \in \mathbb{Z}$ + 1/2). Moreover, these momenta high quality...

As a natural polymer, lignin is only less abundant in nature than cellulose. It has the form of an aromatic macromolecule, with benzene propane monomers connected by molecular bonds such as C-C and C-O-C. One method to accomplish high-value conversion degradation. The use deep eutectic solvents (DESs) degrade simple, efficient environmentally friendly degradation method. After degradation, broken due β-O-4 produce phenolic monomers. In this work, products were evaluated additives for...

Lignosulfonate/polyaniline (LS/PANI) nanocomposite adsorbent materials were prepared by the chemical polymerization of lignosulfonate with an aniline monomer as a dopant and structure-directing agent, adsorption behavior dyes well heavy metal ions was investigated. LS/PANI composites used dye adsorbents for removal different cationic (malachite green, methylene blue, crystal violet). The malachite green investigated examining effects dosage, solution pH, initial concentration dye, time,...

Microfabricated mechanical resonators enable precision measurement techniques from atomic force microscopy to emerging quantum applications. The resonance frequency-based physical sensing combines high with long-term stability. However, widely used Si3N4 suffer frequency sensitivity temperature due the differential thermal expansion vs Si substrates. Here we experimentally demonstrate temperature- and residual stress-insensitive 16.51 MHz tuning fork nanobeam nonlinear clamps defining stress...

Thermal fluctuations often impose both fundamental and practical measurement limits on high-performance sensors, motivating the development of techniques that bypass limitations imposed by thermal noise outside cryogenic environments. Here, we theoretically propose experimentally demonstrate a method reduces effective transducer temperature improves precision dynamic impulse response signal. noise-limited, integrated cavity optomechanical atomic force microscopy probes are used in...

<title>Abstract</title> Deep multiple instance learning (MIL) pipelines are the mainstream weakly supervised methodologies for whole slide image (WSI) classification. However, it remains unclear how these widely-used approaches compare to each other, given recent proliferation of foundation models patch-level embedding and diversity slide-level aggregations. This paper implemented systematically compared six MIL methods by organizing different feature extractions aggregations across five...

ABSTRACT High‐temperature resistance polymer composites are crucial for application in aerospace field. Polybenzoxazine (PBz) aerogel is a novel insulation material with excellent mechanical properties, low bulk density, and thermal conductivity, which has potential protection systems. However, the improvement of high residual char rates shape‐keeping purposes at high‐temperature still critical challenge. Herein, kind PBz composite reinforced mullite‐fiber fabric (PBZ‐MF) prepared by...

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Abstract Advances in integrated photonics open up exciting opportunities for batch-fabricated optical sensors using high-quality-factor nanophotonic cavities to achieve ultrahigh sensitivities and bandwidths. The sensitivity improves with increasing power; however, localized absorption heating within a micrometer-scale mode volume prominently distorts the cavity resonances strongly couples sensor response thermal dynamics, limiting hindering measurement of broadband time-dependent signals....