High-temperature dielectric polymers are in high demand for powering applications extreme environments. Here, we have developed high-temperature homopolymer dielectrics with anisotropy by leveraging the hierarchical structure semicrystalline polymers. The lamellae been aligned parallel to surface films. This structural arrangement resembles horizontal alignment of nanosheet fillers polymer nanocomposites and nanosheet-like block copolymers, which has proven provide optimal topological...

Polymer film capacitors are ubiquitous in modern electronics and electric systems, but the relatively low working temperatures of polymer dielectrics limit their application next-generation capacitors. The currently reported high-temperature rely on construction nanocomposites with wide band gap fillers cross-linked networks to achieve high breakdown strength efficiencies. However, generating optimal chain structure intrinsic great capacitive properties using a one-component is still...

China has the largest population of partially or completely disabled elderly people in world. Although try to remain independent their lives, many still need assistance from others. Failure obtain sufficient creates a situation unmet need. Unmet needs activities daily living (ADL) for pose significant risks hospitalization and mortality cause an increased economic burden on families society. This study aimed identify prevalence risk factors among guide government toward corrective action. A...

Due to their low greenhouse effect and exceptional insulating properties, C4F7N-CO2 gas mixtures have garnered significant attention. In particular, understanding the decomposition characteristics of is crucial for practical use as an eco-friendly dielectric medium. At elevated temperatures, pyrolysis C4F7N produces high concentrations CFN, CF3, C2F2, along with lower levels C3F5, C4F6N, C2F, CN. A further increase in temperature may lead CO2 into CO additional components such C2, C2F3,...

The emerging class of hybrid organic-inorganic perovskites (HOIPs) has exhibited fascinating properties for a wide range technological applications. With halide ions, HOIPs have provided novel optoelectronic devices including efficient solar cells and with pseudohalide anions-like formate (HCOO-), enigmatic electromagnetic been obtained in HOIPs. Large-scale synthesis such 2D HOIP films is immense importance the advancement its application as materials. We shown using in-situ X-ray...

Fundamental insights into the interplay and self-assembly of nanoparticles surface-active agents at liquid–liquid interface play a pivotal role in understanding ubiquitous colloidal systems present our natural surroundings, including foods aquatic life, industry for emulsion stabilization, drug delivery, or enhanced oil recovery. Moreover, well-controlled model mixed interfacial adsorption surfactants allow unprecedented nonideal contaminated particle-stabilized emulsions. Here, we...

The envelope (E) protein of SARS-CoV-2 participates in virion encapsulation and budding at the membrane endoplasmic reticulum Golgi intermediate compartment (ERGIC). positively curved topology required to fit an 80 nm viral particle is energetically unfavorable; therefore, proteins must facilitate ERGIC curvature alteration. To study possible role E this mechanism, we examined structural modification host lipid by using synchrotron-based X-ray methods. Our reflectometry results on...

The structure and dynamics of an active polymer on a smooth cylindrical surface are studied by Brownian simulations. effect force the adsorption behavior combined chain mobility, length N, rigidity κ, cylinder radius, R, phase diagrams systemically investigated. We find that complete is replaced irregular alternative adsorption/desorption process at large driving force. Three typical (spiral, helix-like, rod-like) conformations observed, dependent R. Dynamically, shows rotational motion in...

Lipid bilayers immobilized in planar geometries, such as solid-supported or "floating" bilayers, have enabled detailed studies of biological membranes with numerous experimental techniques, notably X-ray and neutron reflectometry. However, the presence a solid support also has disadvantages it complicates use spectroscopic techniques well surface rheological measurements that would require deformations. Here, order to overcome these limitations, we investigate lipid adsorbed inherently soft...

Chiral inorganic superstructures have received considerable interest due to the chiral communication between compounds and organic additives. However, demanding fabrication complex multilevel structure seriously hinder understanding of transfer self-assembly mechanisms. Herein, we use CuO as a model system study formation process hierarchical structures. Based on simple mild synthesis route, time-resolved morphology in situ chirality evolution could be easily followed. The superstructure...

This study is concerned with the robust extended Kalman filtering problem for non‐linear attitude estimation systems multiplicative noises and unknown external disturbances. The are modelled by random variables bounded variance. disturbances described to lie in set. objective of addressed design a filter such that, presence both disturbances, an optimised upper bound on state error variance can be guaranteed. Thus, (REKF) presented Compared traditional estimation, proposed algorithm takes...

The Python package mlreflect is demonstrated, which implements an optimized pipeline for the automated analysis of reflectometry data using machine learning. combines several training and treatment techniques discussed in previous publications. predictions made by neural network are accurate robust enough to serve as good starting parameters optional subsequent least-mean-squares (LMS) fit data. For a large set 242 reflectivity curves various thin films on silicon substrates, reliably finds...

Abstract Following the reaction of biological membranes to external stimuli reveals fundamental insights into cellular function. Here, self-assembled lipid monolayers act as model containing photoswitchable azobenzene glycolipids for investigating structural response during isomerization by combining Langmuir isotherms with X-ray scattering. Controlled in-situ trans/cis photoswitching N = double bond alters DPPC monolayer structure, causing reproducible changes in surface pressure and layer...

Abstract 2D organic–inorganic hybrid lead halide perovskite films are fascinating optoelectronic materials for white‐light emission and lasing applications. Here, it is demonstrated that nano‐meter‐thick of perovskites can be formed at room temperature using Langmuir–Schaefer (LS) deposition technique. In situ X‐ray measurements reveal a self‐assembly process the formation air–water interface. This requires presence stearic acid monolayer on water subphase having solution lead‐perovskite in...

The X-ray reflectivity technique can provide out-of-plane electron-density profiles of surfaces, interfaces, and thin films, with atomic resolution accuracy. While current methodologies require high surface flatness, this becomes challenging for naturally curved particularly liquid metals, due to the very tension. Here, development measurements beam sizes a few tens micrometres on highly surfaces using synchrotron diffractometer equipped double crystal deflector is presented. proposed...

The estimated accuracy of phase and frequency all FFT spectrum analysis its correction techniques are high[1-3], for perfect characteristic inhibiting the leakage. isn't influenced by shift, so there is no need to correct it. In this paper, a analyzer with self-adaptive sampling designed on basis techniques, using TI's 32-bit floating-point DSP. It shown that measurement error design high frequency-resolution 0.01%. suited high-precision, intensive non-synchronous harmonic analysis.

Ion pairing between the major phospholipids of Staphylococcus aureus plasma membrane (phosphatidylglycerol - PG and lysyl-phosphatidylglycerol LPG) confers resistance to antimicrobial peptides other antibiotics. We developed 3adLPG, a stable synthetic analogue which can substitute for highy-labile native LPG, in biophysical experiments examining membrane-protecting role lipid ion pairing, S. important bacteria. Here we examine surface charge packing characteristics biomimetic mixtures DPPG...

Chiral structures and functions are essential natural components in biominerals biological crystals. molecules direct inorganics through chiral growth of facets or screw dislocation crystal clusters. As chirality promoters, they initiate an asymmetric hierarchical self-assembly a quasi-thermodynamic steady state. However, achieving assembly requires delicate balance between intricate interactions. This complexity causes the roles achiral-chiral inorganic crystallization to remain ambiguous....

The problem of efficient communication over a quasi-static wireless fading channel is considered in this paper. disadvantages two well-known schemes, single-layer transmission (SLT) and multi-layer (MLT), are pointed out. A new scheme named aggressive with ARQ (AT-ARQ) developed optimized to provide better performance, at the expense requiring feedback. Optimal power allocation among (re)transmissions derived. comprehensive performance comparison three under different metrics such as...

Liquid-liquid interfaces offer intriguing possibilities for nanomaterials growth. Here, fundamental interface-related mechanisms that control the growth behavior in these systems are studied Pb halide formation at interface between NaX + PbX2 (X = F, Cl, Br) and liquid Hg electrodes using situ X-ray scattering complementary electrochemical microscopy measurements. These studies reveal a decisive role of species nucleation compounds. In Cl- Br-containing solution, deposition starts by rapid...

Abstract Chiral inorganic superstructures have received considerable interest due to the chiral communication between compounds and organic additives. However, demanding fabrication complex multilevel structure seriously hinder understanding of transfer self‐assembly mechanisms. Herein, we use CuO as a model system study formation process hierarchical structures. Based on simple mild synthesis route, time‐resolved morphology in situ chirality evolution could be easily followed. The...