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Two‐photon polymerization direct laser writing (TPP‐DLW) technology has gained much popularity due to its precision and flexibility in creating intricate 3D micro/nano‐scale devices and machines. While TPP‐DLW enables complex 3D micro/nano patterning, developing multifunctional materials tailored for this process remains a challenge, limiting sophisticated micro/nano device performance. This work addresses key barriers by introducing a novel multifunctional network polymer with specifically designed for TPP‐DLW. The material integrates tailored functional groups allowing submicron 3D spatial arrangement under laser control. Remarkably, it demonstrates tunable pH response, programmed fluorescence, and dynamic reconfiguration upon optical illumination. By leveraging TPP‐DLW's programmability, reconfigurable encrypted microstructures are achieved, representing a new precision multifunctional material printing paradigm beyond single property systems. The synthesized material with its responsive properties, combined with digital fabrication control, fills critical gaps in developing smart, adaptive micro/nano systems. Potential applications requiring exquisite 3D control and multi‐tasking, such as biomedical sensors, micromachines and optics could see transformative advancement. Fundamentally, this integrated materials‐processing approach broadens micro/nano manufacturing design space and functional versatility. [ABSTRACT FROM AUTHOR]

This paper aims to reveal the interaction relationship between microcracks and macrocracks and the influence of the interaction on the crack propagation behavior. A theoretical model of asphalt concrete was established for the interaction between microcracks with different crack densities and a macrocrack. And a meso-structure model of AC-13 dense-graded asphalt concrete was established by combining the Talyor medium method and the DEM (discrete element method). Macro and micro parameters, such as the stress–strain characteristics, crack evolution parameters, and crack tip stress field, were obtained through a semi-circular bend virtual test and used to study the characteristics of crack propagation under the interaction between microcracks and the macrocrack. The results indicate that the interaction has an effect throughout the process of asphalt concrete damage, and shows shielding and acceleration effects as the microcrack density changes. When the microcrack density is low (f3 ≤ 0.8), the crack propagation process, which is affected by the interaction effect, exhibits significant differences, and the interaction effect shows the shielding effect. When the microcrack density is high (f3 > 0.8), the fracture stage is mainly affected by the interaction effect, which shows the acceleration effect. The results provide a predictive theoretical and numerical model for low-temperature cracking of asphalt pavement, and theoretical support for the design, maintenance, and upkeep of long-life pavement. [ABSTRACT FROM AUTHOR]

Regional lung ventilation assessment is a critical tool for the early detection of lung diseases and postoperative evaluation. Biosensor-based impedance measurements, known for their non-invasive nature, among other benefits, have garnered significant attention compared to traditional detection methods that utilize pressure sensors. However, solely utilizing overall thoracic impedance fails to accurately capture changes in regional lung air volume. This study introduces an assessment method for lung ventilation that utilizes impedance data from the five lobes, develops a nonlinear model correlating regional impedance with lung air volume, and formulates an approach to identify regional ventilation obstructions based on impedance variations in affected areas. The electrode configuration for the five lung lobes was established through numerical simulations, revealing a power–function nonlinear relationship between regional impedance and air volume changes. An analysis of 389 pulmonary function tests refined the equations for calculating pulmonary function parameters, taking into account individual differences. Validation tests on 30 cases indicated maximum relative errors of 0.82% for FVC and 0.98% for FEV1, all within the 95% confidence intervals. The index for assessing regional ventilation impairment was corroborated by CT scans in 50 critical care cases, with 10 validation trials showing agreement with CT lesion localization results. [ABSTRACT FROM AUTHOR]

In this study, the electrical, optoelectronic, and thermoelectric properties of bilayer borophene moiré superlattices at different twist angles are investigated in detail. The results reveal that the transport properties of bilayer borophene are significantly impacted by different twist angles. Specifically, the device with 30° is of better transport properties compared to the two devices, due to the absence of interlayer covalent bond. The study reveals the essential influence of twist angle on the moiré superlattice of bilayer borophene and provides a theoretical basis for its potential applications in electronic, optoelectronic, and thermoelectric devices. [ABSTRACT FROM AUTHOR]