Stable Atomic Quantum Clusters via Kinetic Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing atomic quantum clusters (AQCs) are limited by the need for costly physical processes, result in poor quantities, and require stabilization agents, making large-scale application and property study difficult due to short lifetimes and size variability.
Innovation Solution
A kinetic control process for reducing metal salts or ions at low concentrations and slow rates, using mild reducers and two-phase systems, allows for the production of stable AQCs without external stabilizers, enabling controlled size and scalable industrial production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If costly physical processes in gaseous phase are used to produce AQCs, then production quantity is improved, but production cost increases and scalability is reduced
Solution Approach 1:
The patent replaces costly physical processes in gaseous phase with electrochemical processes occurring in liquid solution. The electrochemical reduction of metal ions at the cathode surface provides a simpler, more scalable alternative to complex physical vapor deposition or laser ablation techniques, thereby reducing production cost while maintaining or improving quantity.
Solution Approach 2:
The patent changes the phase parameter from gaseous to liquid, and the process type from physical to electrochemical. By conducting the reaction in liquid solution with controlled electrochemical parameters (current density, potential, pH), the method achieves scalable production at lower cost compared to gaseous phase physical processes.
2Quantity of substance
If electrochemical processes are used to produce AQCs, then production quantity is improved, but size uniformity deteriorates due to mixtures of clusters of different sizes
Solution Approach 1:
The patent employs dynamic control of the electrochemical process by adjusting current density, potential, and reaction time to regulate cluster growth. By controlling the reduction rate and using two-phase systems with organic modifiers, the method dynamically manages nucleation and growth stages to produce more uniform cluster sizes while maintaining high production quantity.
Solution Approach 2:
The patent uses parameter changes including pH control, potential control, and addition of organic modifiers to regulate the electrochemical reduction process. These parameter adjustments control the reduction rate and cluster growth kinetics, thereby improving size uniformity while maintaining high production quantity through optimized electrochemical conditions.
3Stability of the object's composition
If protective molecules or solid matrices are used to stabilize AQCs, then stability is improved, but complexity of the system increases and purification becomes more difficult
Solution Approach 1:
The patent employs self-stabilization mechanisms where the AQCs inherently maintain stability through controlled electrochemical synthesis conditions. By optimizing pH, potential, and using two-phase systems, the clusters stabilize themselves without requiring additional protective molecules or solid matrices, thereby reducing system complexity and simplifying purification.
Solution Approach 2:
The patent achieves stability through parameter control rather than additive stabilization. By maintaining specific pH ranges, applying controlled potentials, and using two-phase systems with organic modifiers, the AQCs remain stable without protective molecules, reducing system complexity and facilitating easier purification compared to stabilized systems.
4Productivity
If high reaction speed is used to produce AQCs, then productivity is improved, but control over cluster formation deteriorates
Solution Approach 1:
The patent uses dynamic control of the electrochemical reaction by adjusting current density and potential over time. The process transitions from high initial current density for rapid nucleation to lower current density for controlled growth, thereby maintaining both high productivity and precise control over cluster formation through time-dependent parameter adjustment.
Solution Approach 2:
The patent employs periodic or staged electrochemical reduction processes where different current densities or potentials are applied in sequence. The first stage uses high current density for rapid cluster formation (high productivity), followed by a second stage with lower current density for size control and uniformity (precision), thereby achieving both goals through periodic action.
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 method produces stable AQCs that can be isolated and manipulated for hours or days, facilitating their use as sensors, electrocatalysts, and cytostatics, with controlled sizes and properties, overcoming previous limitations in quantity and stability.
Implementation Method 1
the spatial confinement of electrons which originates the quantum separation of the energy levels
Implementation Method 2
syntonize their fluorescence at different wavelengths
Implementation Method 3
the reduction of the metal salt or ion (or metal salts or ions), and it is characterized in that it has a kinetic control whereby the reduction of the metal salt or ion (metal salts or ions) is slowly produced
Implementation Method 4
A kinetic control process for reducing metal salts or ions at low concentrations and slow rates
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The invention relates to stable atomic quantum clusters (AQC) which are characterized in that they comprise less than 500 metal atoms. The invention also relates to the method of producing the inventive clusters, which is characterized in that it makes used of a kinetic control system and maintains a low concentration of reactants in the reaction medium. The invention further relates to the uses of said clusters as sensors (fluorescent, magnetic or chemical sensors), electrocatalysts and cytostatics and/or cytotoxics.