Invisible material refers to a material that can reduce or eliminate the reflection of light on the surface of an object, making it invisible or reducing its visibility. The principles of commonly used stealth materials currently include the following: The principle of refractive index control: By utilizing the difference between the refractive index of the material and the refractive index of the...
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Silicon carbide particle reinforced aluminum matrix composite material, abbreviated as SiCp/Al composite material, refers to the addition of silicon carbide particles (SiCp) to aluminum matrix alloys to form a composite material with high strength, high stiffness, and high heat resistance. This composite material has been widely used in fields such as aerospace, shipbuilding, vehicles, electronic ...
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In recent years, the application of nanomaterials has received increasing attention. Nanomaterials have a larger specific surface area and submicron size, giving them chemical and physical properties that differ from macroscopic substances. The crystal structure of nanomaterials has a significant impact on their properties. Nanomaterials with different crystal forms have certain advantages in thei...
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Introduction: Nanotechnology is becoming increasingly important in many fields, from medicine to electronics. Nanomaterials, including nanoparticles, nanotubes, and nanowires, are essential components of many nanotechnology applications. Producing these materials requires specialized techniques, such as wet and dry methods. In this article, we will explore what dry and wet methods are, their benef...
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Class I and Class II materials are two fundamental concepts in the field of materials science, which are used to describe the crystal structure types of materials and are often applied in the research of materials such as semiconductors and metals. So, how do we distinguish between Class I materials and Class II materials? A simple method is to distinguish based on the density of the material. Com...
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Quantum dots (QDs) refer to semiconductor nanoparticles with a size smaller than the Bohr radius of the exciton and exhibiting quantum confinement effects. Due to the quantum confinement effect, the fluorescence emission of quantum dots is related to their diameter and chemical composition. By compounding with semiconductor surfaces, their optical and photochemical properties can be enhanced. Trad...
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Synthesis of Carbon Quantum Dots The synthesis of carbon quantum dots can be mainly divided into two categories: top-down method and bottom-up method. Through the pre-treatment, preparation, and subsequent processing, carbon quantum dots can be controlled in size, passivated on the surface, doped with heteroatoms, and nanocomposites to meet the requirements. Top-down approach Top down method: lase...
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What are the surface modification methods for alumina powder? Aluminum oxide, a common material, is commonly used in the production of ceramics, coatings, catalysts, etc. However, in some applications, such as filling composite materials or preparing high-performance catalysts, surface modification of alumina is required to improve its performance and stability. This article will discuss the surfa...
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