Optical Particle Sorter Using Standing Wave Interference
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Solution Overview
Problem
Current optical particle sorting technologies face challenges in efficiently sorting particles based on parameters like dielectric constant, magnetic permeability, and particle volume with high resolution and throughput, often requiring physical contact and limited dynamic range.
Innovation Solution
An optical particle sorter is developed that uses a standing wave optical interference pattern to deflect particles into distinct paths based on their dielectric constant, magnetic permeability, or volume, eliminating physical contact and enabling continuous sorting with high resolution across a large dynamic range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical particle sorting methods are used, then particles can be sorted based on optical properties, but physical contact is required which limits resolution and throughput
Solution Approach 1:
The patent replaces mechanical/physical contact-based sorting with an optical interference-based sorting mechanism. Particles are sorted through their interaction with standing wave optical fields without physical contact, eliminating the limitations of mechanical sorting systems while achieving higher resolution and throughput.
Solution Approach 2:
The patent introduces an optical interference pattern as an intermediary between the particle stream and the sorting mechanism. This optical field acts as a mediator that deflects particles based on their optical properties without requiring direct physical contact, enabling non-contact high-resolution sorting.
2Adaptability or versatility
If conventional sorting methods are used, then particles can be sorted, but the dynamic range is limited
Solution Approach 1:
The patent utilizes changes in optical parameters (wavelength, intensity, interference pattern configuration) to sort particles across a wide dynamic range. By adjusting these optical parameters, the system can handle diverse particle types and sizes with varying throughput requirements, achieving both versatility and high particle flow capacity.
3Measurement precision
If high resolution sorting is achieved, then particle separation precision improves, but throughput decreases
Solution Approach 1:
The patent segments the particle sorting process into multiple parallel channels defined by the standing wave interference pattern. This segmentation allows simultaneous sorting of multiple particles at high resolution while maintaining high throughput, as particles are deflected into distinct spatial paths based on their optical properties without sequential processing bottlenecks.
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
The system achieves high throughput and precise sorting of particles without physical contact, allowing for continuous dispersion of particles by size or other parameters, with resolving power exceeding conventional methods.
Implementation Method 1
produces a standing wave optical interference pattern in the optical interference site of the particle receiver
Implementation Method 2
subjecting the particles to an optical gradient force from the standing wave optical interference pattern
Data Source
AI summary
A process for optically sorting a plurality of particles includes: providing a particle receiver; producing particles; receiving the particles by the particle receiver; receiving a light by the particle receiver; producing a standing wave optical interference pattern in an optical interference site of the particle receiver from the light; subjecting the particles to an optical gradient force from the standing wave optical interference pattern; deflecting the particles into a plurality of deflected paths to form the sorted particles from the particles; and propagating the sorted particles from the optical interference site through the deflected paths to optically sort the particles.