Laser-Driven Shock Compression for Nano-Carbon Synthesis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for synthesizing nano-diamonds and other nano-carbon allotropes, such as nano-onions, face limitations in throughput due to the use of conventional high explosives and static compression cells, which require costly purification and are limited by the small volume and mechanical constraints of these cells, making it difficult to achieve high pressure and temperature uniformly.
Innovation Solution
A system and method utilizing a liquid precursor jet subjected to a shock wave generated by a laser, eliminating the need for a containment cell and ablator material, allowing for high-pressure and high-temperature synthesis of nano-carbon materials with increased throughput and purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional static compression cells are used to synthesize nano-diamonds, then high pressure (～16 GPa) and high temperature conditions can be achieved, but the throughput is limited due to small volume and mechanical constraints of the cells
Solution Approach 1:
The patent replaces the mechanical static compression cell system with a laser-driven shock compression system. The laser beam delivers optical energy to create shock waves that compress the carbon target to high pressure and temperature, eliminating the mechanical constraints and volume limitations of conventional compression cells while enabling high throughput production.
Solution Approach 2:
The patent employs pulsed laser irradiation to generate repeated shock waves in the carbon target. By controlling the pulse frequency and duration, the system achieves continuous high-throughput synthesis of nano-diamonds while maintaining the necessary high pressure and temperature conditions during each pulse cycle.
2Productivity
If high explosives are used for detonation synthesis, then nano-diamonds can be produced, but costly purification and refinement are required
Solution Approach 1:
The patent replaces the chemical explosion process with a controlled laser-driven shock compression process. This substitution eliminates the complex mixture of decomposition products from high explosives, resulting in cleaner synthesis that requires minimal purification and significantly reduces manufacturing costs while maintaining high productivity.
Solution Approach 2:
The patent precisely controls the laser pulse parameters (energy, duration, focal position) to achieve optimal shock compression conditions that favor direct formation of high-purity nano-diamonds. By optimizing pressure, temperature, and confinement time parameters, the process minimizes unwanted byproducts and eliminates the need for costly purification steps.
3Quantity of substance
If large volume compression cells are used, then more material can be processed, but pressure is limited due to fundamental physical constraints on the strength of pressure cell components
Solution Approach 1:
The patent replaces the mechanical pressure transmission system with a direct optical-to-mechanical energy conversion system. The laser beam deposits energy directly into the carbon target, creating localized shock waves that generate extremely high pressure without being constrained by the mechanical strength of container walls, enabling both large quantity processing and high pressure simultaneously.
Solution Approach 2:
The patent processes material in thin layered sections, with each layer receiving focused laser irradiation and shock compression. This segmentation allows the system to process large total quantities of material through multiple passes while maintaining the high pressure conditions needed for nano-diamond formation in each individual processing zone.
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 high-throughput synthesis of nano-diamonds and other nano-carbon materials with improved purity and reduced costs, as it allows for the rapid and controlled generation of nanoparticles without the limitations of traditional methods, facilitating the production of pure materials with enhanced efficiency.
Implementation Method 1
A laser may be used for this application. It should be appreciated that the term laser is used herein as a general term to encompass any device that produces a coherent beam of light
Implementation Method 2
The laser pulse drives a shock wave through the liquid precursor jet to sufficiently compress the jet of liquid precursor
Implementation Method 3
drive a shock wave through at least a substantial portion of a thickness of the jet of liquid precursor to sufficiently compress the jet of liquid precursor
Implementation Method 4
increase a pressure and a temperature of the jet of liquid precursor, to create solid state nanoparticles
Data Source
AI summary
The present disclosure relates to a system and method for synthesis of condensed, nano-carbon materials to create nanoparticles. In one embodiment the system may have a source of liquid precursor, a flow control element and a shock wave generating subsystem. The flow control element is in communication with the source of the liquid precursor and creates a jet of liquid precursor. The shock wave generating subsystem drives a shock wave through at least a substantial portion of a thickness of the jet of liquid precursor to sufficiently compress the jet of liquid precursor, and to increase a pressure and a temperature of the jet of liquid precursor, to create solid state nanoparticles.