The development of highly thermally conductive composites that combine visible light/infrared camouflage and information encryption has been endowed with great significance in facilitating the application of 5G communication technology in military fields. This work uses aramid nanofibers (ANF) as the matrix, hetero-structured silver nanowires@boron nitride nanosheets (AgNWs@BNNS) prepared by in situ growth as fillers, which are combined to fabricate sandwich structured thermally conductive and electrically insulating (BNNS/ANF)-(AgNWs@BNNS)-(BNNS/ANF) (denoted as BAB) composite films by "filtration self-assembly, air spraying, and hot-pressing" method. When the mass ratio of AgNWs@BNNS to BNNS is 1 : 1 and the total mass fraction is 50 wt %, BAB composite film has the maximum in-plane thermal conductivity coefficient (λ of 10.36 W/(m ⋅ K)), excellent electrical insulation (breakdown strength and volume resistivity of 41.5 kV/mm and 1.21×10 Ω ⋅ cm, respectively) and mechanical properties (tensile strength of 170.9 MPa). 50 wt % BAB composite film could efficiently reduce the equilibrium temperature of the central processing unit (CPU) working at full power, resulting in 7.0 °C lower than that of the CPU solely integrated with ANF directly. In addition, BAB composite film boasts adaptive visible light/infrared dual camouflage properties on cement roads and jungle environments, as well as the function of fast encryption of QR code information within 24 seconds.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/anie.202401538 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Biodegradation and mechanical performance of Silane-chitosan-graphene oxide composite coating on AZ31 magnesium alloys for biomedical applications.
Int J Biol Macromol
December 2024
Powder Technology and Advanced Materials, HEI-VS, HES-SO University of Applied Sciences and Arts Western Switzerland, Rue de l'Industrie, 23, 1950 Sion, Switzerland.
Biodegradable magnesium alloy medical implants have attracted considerable interest thanks to their remarkable biocompatibility and mechanical properties. However, the rapid corrosion rate of magnesium alloys in physiological environments presents a major challenge to their practical application. Therefore, this study attempted to design a silane/chitosan /graphene oxide composite coating that reduces the corrosion and enhances the biodegradation of magnesium alloys used in temporary implants.
View Article and Find Full Text PDFTirzepatide for Heart Failure with Preserved Ejection Fraction and Obesity.
N Engl J Med
November 2024
From Baylor University Medical Center, Dallas (M.P.); Imperial College, London (M.P.); RHJ Department of Veterans Affairs, Health System and Medical University of South Carolina, Charleston (M.R.Z., S.E.L.); the Cardiovascular Division, Department of Medicine, University of Virginia Health System, Charlottesville (C.M.K.); Flourish Research, Boca Raton, FL (S.J.B.); the Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland (V.M.); the Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China (J.G.); Eli Lilly, Indianapolis (G.J.W., Y.O., M.C.B., K.C.H., M.M.); and the Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN (B.A.B.).
Background: Obesity increases the risk of heart failure with preserved ejection fraction. Tirzepatide, a long-acting agonist of glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1 receptors, causes considerable weight loss, but data are lacking with respect to its effects on cardiovascular outcomes.
Methods: In this international, double-blind, randomized, placebo-controlled trial, we randomly assigned, in a 1:1 ratio, 731 patients with heart failure, an ejection fraction of at least 50%, and a body-mass index (the weight in kilograms divided by the square of the height in meters) of at least 30 to receive tirzepatide (up to 15 mg subcutaneously once per week) or placebo for at least 52 weeks.
Altered intestinal microbiota induced by high-fat diets affect cognition differently in mice.
Nutr Res
December 2024
School of Public Health, Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China. Electronic address:
Article Synopsis
- The study investigates how high-fat diets impact cognitive function in mice by altering their gut microbiota.
- Fecal microbiota from obese mice on various high-fat diets were transplanted to antibiotic-treated mice, showing that some diets led to significant cognitive impairment and neuronal loss in the hippocampus.
- The findings suggest diets high in saturated and trans fats negatively affect cognition by damaging the hippocampus through changes in gut microbiota, while diets rich in n-3 polyunsaturated fatty acids may have protective effects.
Polyester Adhesives via One-Pot, One-Step Copolymerization of Cyclic Anhydride, Epoxide, and Lactide.
Polymers (Basel)
September 2024
Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
Article Synopsis
- Polyesters (PEs) are presented as environmentally friendly alternatives to traditional polymers due to their degradability and recyclability from bio-based materials.
- A new one-pot, one-step self-switchable polymerization method was used to create bio-based hot-melt adhesives by combining the polymerization of epoxides and cyclic anhydrides with L-lactide, resulting in copolyesters with various architectures.
- The study found that the adhesive strength of these copolyesters was significantly influenced by their structure, with the (AB)-type star-block copolyester showing competitive adhesive performance compared to commercial adhesives.
Catalytic Reactivity Assessment of AgM and CuM (M = Cr, Fe) Catalysts for Dry Reforming of Methane Process with CO.
Molecules
September 2024
Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181-UCCS-Unit of Catalysis an Solid Chemistry, F-59000 Lille, France.
CuM and AgM (M = Cr, Fe) catalysts were synthesized, characterized, and evaluated in methane reforming with CO with and without pretreatment under a H atmosphere. Their textural and structural characteristics were evaluated using various physicochemical methods, including XRD, B.E.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!