3D Vortex Trap Beam Optical Force Chromatography
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Optical Force Chromatography (OFC) is limited by particle-to-particle interactions and concentration and throughput limitations, restricting its application to highly diluted samples and single particle applications.
Innovation Solution
The use of non-standard laser beam profiles with intensity distributions and 3D vortex trap beams provides a three-dimensional working space for particles, allowing unhindered movement and reducing particle-to-particle interactions, enabling analysis of less diluted samples and improving dynamic range, sensitivity, and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard TEM00 laser beam profile is used for Optical Force Chromatography, then particles can be manipulated along a single line, but particle-to-particle interactions occur and concentration limitations arise
Solution Approach 1:
The patent transforms the one-dimensional particle manipulation (along a single line) into three-dimensional manipulation by using laser beams with multiple intensity maxima arranged in specific spatial patterns. This allows particles to be manipulated in a 3D volume rather than confined to a single line, enabling higher sample concentrations without particle-to-particle interactions.
Solution Approach 2:
The patent divides the single laser beam into multiple independent intensity maxima (e.g., array of focused spots) that can independently manipulate particles. This segmentation of the optical field allows multiple particles to be manipulated simultaneously in different spatial regions without interacting with each other, thereby increasing the effective sample concentration that can be analyzed.
2Force
If particles are confined to a single line along the laser beam, then optical forces can be applied, but dynamic range and throughput are limited
Solution Approach 1:
The patent extends the manipulation space from one dimension (single line) to three dimensions (volumetric space) by creating multiple intensity maxima in different spatial positions. This volumetric working space allows particles to move freely in three dimensions while still experiencing optical forces, dramatically increasing the dynamic range of particle sizes that can be manipulated and improving throughput by enabling parallel processing of multiple particles.
Solution Approach 2:
The patent creates a dynamic working space where particles are not confined to fixed positions but can move freely within the three-dimensional volume defined by the multiple intensity maxima. This dynamic configuration allows particles of various sizes to be manipulated simultaneously with optimized optical forces, enhancing both the dynamic range and throughput of the system.
3Reliability
If highly diluted samples are used, then particle-to-particle interactions are minimized, but concentration and throughput limitations occur
Solution Approach 1:
The patent resolves the contradiction between measurement accuracy and throughput by creating a three-dimensional working space with multiple intensity maxima. This volumetric space allows multiple particles to be manipulated simultaneously in parallel without interacting, enabling the analysis of concentrated samples while maintaining measurement accuracy. The throughput is improved by processing multiple particles at once rather than requiring highly diluted samples for sequential analysis.
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 enhances the dynamic range and sensitivity of measurements, allows for higher particle concentrations, and increases throughput, enabling the analysis of particle sizes and properties in a more accurate and efficient manner, while eliminating errors from particle interactions and fluidic drag forces.
Implementation Method 1
the sample can be irradiated with light, so that the photons of the light transfer momentum to the particles
Implementation Method 2
a 3D vortex trap beam that is configured to confine the particles in a three-dimensional volume by means of high-intensity gradients
Data Source
AI summary
A method can be provided for analyzing a fluidic sample with dispersed particles. Using such exemplary method, it is possible to irradiate the sample with light, so that the photons of the light transfer momentum to the particles. It is also possible to measure at least one property of the particles that is altered by the momentum transfer. The light can be a propagating beam with an intensity distribution that has gradients pointing to more than one point within each plane normal to the direction of propagation, while varying steadily along the direction of propagation, and/or a 3D vortex trap beam that is configured to confine the particles in a three-dimensional volume by means of high-intensity gradients. An exemplary device can also be provided (e.g., for performing the method), comprising a chamber for holding a sample that is elongate along an axis and configured to pass a beam of light along the axis. The chamber can have a conical inner cross section that substantially expands in the direction of propagation of the beam.