Recycling of carbon fiber-reinforced polymer composites (CFRCs) based on thermosetting plastics is difficult. In the present study, high-performance CFRCs are fabricated through complexation aromatic pinacol-cross-linked polyurethane (PU-AP) thermosets with fiber (CF) cloths. PU-AP exhibit a breaking strength 95.5 MPa and toughness 473.6 MJ m

It is challenging to fabricate mechanically super-strong polymer composites with excellent healing capacity because of the significantly limited mobility chains. The fabrication by complexing polyacrylic acid (PAA) polyvinylpyrrolidone (PVPON) in aqueous solution followed molding into desired shapes presented. coiled PVPON can complex PAA water via hydrogen-bonding interactions produce transparent PAA-PVPON homogenously dispersed nanoparticles complexes. As healable materials, composite...

The fabrication of self‐healing/healable superhydrophobic films that can conveniently and repeatedly restore the loss superhydrophobicity caused by severe mechanical damage, such as deep wide surface scratches, remains challenging. In present work, conductive are healable means an applied voltage or near infrared (NIR) light irradiation fabricated depositing a layer Ag nanoparticles nanowires (AgNPs‐AgNWs) on thermally polycaprolactone (PCL)/poly(vinyl alcohol) (PVA) composite film, followed...

We propose a simple theoretical formula for describing the refractive indices in binary liquid mixtures containing salt ions. Our theory is based on Clausius-Mossotti equation; it gives index of mixture terms pure liquids and polarizability ionic species, by properly accounting volume change upon mixing. The predictions are tested extensive experimental measurements water-acetonitrile-salt systems several compositions, different range concentrations. Excellent agreement obtained all cases,...

Fluorine-free self-healing superhydrophobic films are of significance for practical applications because their extended service life and cost-effective eco-friendly preparation process. In this study, we report the fabrication fluorine-free by layer-by-layer (LbL) assembly poly(sodium 4-styrenesulfonate) (PSS)-1-octadecylamine (ODA) complexes (PSS-ODA) poly(allylamine hydrochloride) (PAH)-sodium dodecyl sulfonate (SDS) (PAH-SDS) complexes. The wettability LbL-assembled PSS-ODA/PAH-SDS...

Abstract Thermochromic smart windows have gained increasing popularity in light modulation and energy management buildings. However, the fabrication of flexible thermochromic with high luminous transmittance ( T lum ), tailorable critical temperature τ c strong solar ability (Δ sol long‐term durability remains a huge challenge. In this study, hydrogel‐based are fabricated by sandwiching hydrogels polyallylamine hydrochloride, polyacrylic acid, carbonized polymer dots (CPDs) complexes between...

The Internet of Things (IoT) introduced new targets and attack vectors for malicious actors who infect insecure devices with malware in order to form large botnets that can launch distributed denial service (DDoS) attacks. These comprise various infected such as Internet-connected cameras home routers. This paper focuses on the unsolved problem creating robust detection secure research compares effectiveness three different approaches behavioral endpoint routers through observation...

Sports competition data analysis and strategy optimization are important ways to enhance athlete competitiveness team collaboration. The current formulation have strong subjectivity, making it difficult deeply understand the performance characteristics patterns of athletes teams. Traditional methods cannot accurately identify differences different athletes, there limitations in their feature recognition classification. In order scientificity improve competitions, this article combined...

Open AccessCCS ChemistryRESEARCH ARTICLES9 Dec 2022Dual Nanofillers-Reinforced Noncovalently Cross-Linked Polymeric Composites with Unprecedented Mechanical Strength Ni An, Youliang Zhu, Xiaohan Wang, Yixuan Li, Junjun Liu, Xu Fang, Zhongyuan Lu, Bai Yang and Junqi Sun An , Zhu Wang Li Liu Fang Lu https://doi.org/10.31635/ccschem.022.202202496 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail cross-linked polymer...

Simplicity and few finely tuned parameters are the main advantages of alternating projection (AP) methods, a fundamental class phase retrieval (PR) methods in optical imaging field. However, AP often suffer from low-quality when diffraction patterns recorded. Regularized PR avoid this deficiency by using some proper regularization models, but many needed. In work, we propose novel unified framework called constrained (ConPR), which brings method approach together. The proposed ConPR not only...

It is a long-term pursuit, and also, challenge to significantly improve the mechanical strength of thermoplastic polymers using readily dispersed as nanofillers. In this study, we demons...

Use of an enzyme mimetic (DhHP-6) as ATRP catalyst for the synthesis a series functional polymers.

Abstract Recycling of carbon fiber‐reinforced polymer composites (CFRCs) based on thermosetting plastics is difficult. In the present study, high‐performance CFRCs are fabricated through complexation aromatic pinacol‐cross‐linked polyurethane (PU−AP) thermosets with fiber (CF) cloths. PU−AP exhibit a breaking strength 95.5 MPa and toughness 473.6 MJ m −3 contain abundant hydrogen‐bonding groups, which can have strong adhesion CFs. Because high interfacial between CF cloths thermosets,...

With the explosive development of wireless communication and low power embedded techniques, Body Area Network (BAN) has opened up new frontiers in race to provide real-time health monitoring. IEEE 802 established a Task Group called 802.15.6 inNovember 2007 aims establish standard optimized for power, high reliability applied medical non-medical application BANs. This paper overviews path loss model scheme implant-to-body surface channel presented by standard. Comparing with where BCH...

Measurement of parameters multiple exponentially damped sinusoids (MEDS) signals is significant for nuclear magnetic resonance imaging and speech analysis systems. Traditional technologies require a large number samples heavy processing burden to estimate the parameters. In this brief, we propose sub-Nyquist sampling estimation scheme MEDS address problem. The proposed system consists two parallel channels, where clock one channel staggered with other. first used complex amplitudes, while...

This work explores the application of anomaly detection techniques, specifically one-class support vector machine (SVM) and online change-point detection, to construct a model that can distinguish, in real-time, between normal operation an Amazon Alexa Virtual Assistant IoT device from anomalous due malware infections. Despite current absence widespread for devices, anticipated rapid growth deployment use devices will likely attract many different attacks near future. Because their highly...

The one-pot combination of enzymatic ring-opening polymerization (eROP) and metathesis (ROMP) is successfully established to construct block copolymers. cis-1,4-Diacetoxy-2-butene employed both as a precursor initiate eROP ε-caprolactone or 15-pentadecanolide chain transfer agent in ROMP. obtained polymers are systematically characterized by NMR, GPC, DSC, microTOF-QII MS. An evaluation the reaction kinetics indicates presence two stages during eROP/ROMP process. Compared with cascade...

For satisfying requirements of the medical application, IEEE 802.15 Task Group approved 802.15.6 communication standard which is optimized for low power device. In this paper, we analyze performance MAC protocol, in terms throughput, delay-time and energy consumption under saturation unsaturation conditions. Considering idle state nodes, presented a new three-dimensional Markov model to evaluate Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism based on protocol. The...

Principal component analysis (PCA) is widely used for anomaly detection, specifically by computing the distances of each point in dataset to (sample) subspace spanned principal components sample covariance matrix. Points with above a threshold are labeled as anomalous. Although it typically unknown practice, distribution from which drawn has its own (population) subspace, distribution's matrix, and thresholded this determine true labels points. It follows that matrix produces false alarms...

Multiple exponentially damped sinusoids (MEDS) signals have been widely applied to the fields of speech analysis and nuclear magnetic resonance imaging systems. Although sub-Nyquist sampling schemes were proposed in previous works, either image frequency aliasing was not resolved or parameters measuring process required a large number samples. In this article, feedback-based measurement scheme for MEDS is address these problems. Since would lead frequencies ambiguity, an additional designed...

A natural basis for the detection of a wireless random reactive jammer (RRJ) is perceived violation by detector (typically located at access point (AP)) carrier sensing protocol underpinning many protocols (e.g., WiFi). Specifically, when medium station to be busy, compliant will avoid transmission while RRJ often initiate transmission. However, hidden terminals, i.e., activity detected AP but not station, complicate use as since they provide plausible deniability suspected being an RRJ. The...