Dielectric Composite Rods with Uniform Nanoparticles
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Solution Overview
Problem
Existing methods for producing metal-dielectric and semiconductor-dielectric composites with nanoparticles face challenges in achieving uniform distribution of nanoparticles throughout the matrix due to limited in-depth penetration, especially in thermal diffusion and implantation techniques.
Innovation Solution
The method involves milling dielectric input material into fine crystalline granulate, mixing with metal or semiconductor nanoparticles, and then using gravitational micro-pulling down from the melt to produce rods with uniform nanoparticle distribution, allowing for high growth rates and specific orientation of the dielectric matrix.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thermal diffusion or implantation methods are used to produce metal-dielectric composites, then nanoparticles can be introduced into the matrix, but the penetration depth is limited and uniform distribution throughout the matrix cannot be achieved
Solution Approach 1:
The patent changes the physical state of the dielectric matrix from solid to liquid (melt) during the nanoparticle introduction process. By melting the dielectric matrix and mixing nanoparticles in the liquid state, then solidifying the mixture, uniform distribution throughout the entire matrix volume is achieved, overcoming the penetration depth limitation of solid-state diffusion and implantation methods
Solution Approach 2:
The patent uses the liquid melt state as an intermediary medium to facilitate uniform nanoparticle distribution. The melt acts as a carrier that allows nanoparticles to be evenly dispersed throughout the matrix volume before solidification, eliminating the need for deep penetration into solid material
2Productivity
If high growth rates are used in micro-pulling down to increase productivity, then rod production efficiency improves, but control of specific orientation and crystallization quality may be compromised
Solution Approach 1:
The patent employs dynamic control of the pulling process, adjusting the withdrawal speed of the capillary from the melt to optimize both productivity and crystallization quality. The system allows real-time modification of growth parameters to maintain orientation control even at elevated production rates
Solution Approach 2:
The patent implements monitoring and control mechanisms that provide feedback on the crystallization process, allowing adjustment of pulling speed and temperature gradients to maintain proper orientation and crystal structure even during high-rate production
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the production of composite rods with nanoparticles uniformly distributed throughout the volume, exhibiting enhanced plasmon resonance and anisotropic optical properties, suitable for applications in photonic fibers, optical switches, and luminescence enhancement.
Implementation Method 1
the physical basis of which is provided by coherent oscillations of the conduction band electrons in metallic nanoparticles in interaction with an electromagnetic wave... electromagnetic coupling may occur between the wave field and the electron plasma oscillations. This phenomenon is called the plasmon resonance.
Implementation Method 2
a dielectric input material is milled into a fine crystalline granulate which is thoroughly mixed with the nanoparticles... and then the thus-produced matrix with nanoparticles uniformly distributed throughout its volume is melted... after which said matrix undergoes the process of gravitational micro-pulling down
Data Source
AI summary
The object of the invention is a method of producing composites with a dielectric matrix comprising metallic and/or semi-conductive nanoparticles in the form of rods with plasmonic properties, which are used especially in plasmonics and optoelectronics, comprising metallic and/or semi-conductive nanoparticles in their volume. The method according to the invention consists in that a dielectric input material is milled into the form of a fine crystalline granulate, which is thoroughly mixed with nanoparticles of at least one metal and/or semi-conductive compound having the melting point higher than the melting point of the matrix, and then the thus-produced matrix with nanoparticles uniformly distributed throughout its volume is melted at a temperature lower than the melting point of the nanoparticles in a crucible (1) of a system for micro-pulling down from the melt, after which said matrix undergoes the process of gravitational micro-pulling down.