Time-Multiplexed Electromagnetic Trap Beam for Complex Geometries

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Solution Overview

Problem

Existing electromagnetic trapping technologies require custom-designed apparatuses for each trap geometry and necessitate multiple beams for secondary operations, limiting flexibility and efficiency in generating complex trapping geometries and performing additional functions on trapped particles.

Innovation Solution

The implementation of a time-multiplexed approach, where a single or few electromagnetic trapping beams are directed at different locations at different time slots, enables the generation of complex particle trapping geometries, allowing for trapping, movement, organization, illumination, and curing of particles without the need for multiple beams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If custom-designed optical and electrical apparatuses are used for each trap geometry, then the trapping precision is improved, but the device complexity increases

Engineering Contradiction:
Improvetrapping precisionVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

A single electromagnetic beam is designed to perform multiple functions: trapping particles, generating arbitrary geometries, and performing secondary operations such as illumination and curing. This universal beam replaces the need for multiple custom-designed apparatuses for different trap geometries and operations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The electromagnetic beam is modulated using time-multiplexing, where the beam is rapidly switched between different spatial locations and functions in periodic time slots. This allows a single beam to create complex geometries by sequentially activating trap positions around the particle, maintaining precision while reducing device complexity.

Inventive Principle:
Principle #19Periodic action

2Adaptability or versatility

If multiple electromagnetic beams are used for secondary operations, then the functional versatility is improved, but the device complexity increases

Engineering Contradiction:
Improvefunctional versatilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The same electromagnetic beam used for trapping is also used for secondary operations such as illumination, rotation, and curing. By modulating the beam's properties and timing, a single beam performs multiple functions that would traditionally require separate beams and apparatuses.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

Multiple beam functions (trapping, illumination, curing, rotation) are merged into a single electromagnetic beam through time-multiplexing. The beam is rapidly switched between different functions and spatial locations, combining what would traditionally require separate beams into one unified system.

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If custom apparatuses are designed for each beam shape, then the trapping precision is improved, but the ease of manufacture worsens

Engineering Contradiction:
Improvetrapping precisionVSAvoidease of manufacture
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

Instead of manufacturing different optical apparatuses for different beam shapes, the system uses periodic modulation of a single beam through time-multiplexing. The beam is rapidly redirected to different positions and activated in sequences that create various trap geometries, eliminating the need for custom-manufactured optics for each shape.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system changes the spatial and temporal parameters of a single electromagnetic beam through modulation and time-multiplexing to generate different trap geometries. This parameter-based approach replaces the need for physical customization of optical apparatuses for different beam shapes.

Inventive Principle:
Principle #35Parameter changes

4Adaptability or versatility

If different beam sources are used for different shapes, then the adaptability is improved, but the loss of time increases

Engineering Contradiction:
ImproveadaptabilityVSAvoidtime to change beam shapes
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

A single electromagnetic beam source is designed to generate all required trap geometries and perform all secondary operations through time-multiplexing and modulation. This eliminates the need to switch between different beam sources, maintaining adaptability while eliminating the time loss associated with changing beam sources.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The single beam source uses periodic modulation and time-multiplexing to rapidly switch between different functions and spatial configurations. This allows the system to adapt to different trapping geometries and operations without the time penalty of physically changing beam sources, as all changes are achieved through electronic control of the single beam.

Inventive Principle:
Principle #19Periodic 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 enhances the flexibility and efficiency of electromagnetic trapping by allowing the generation of arbitrary trap geometries and simultaneous performance of multiple functions using a single or few beams, thereby overcoming the limitations of existing technologies.

Implementation Method 1

trap a particle in 3D space using an electromagnetic beam

Methodology Applied
Scientific EffectOptical radiation pressure: Radiation Pressure

Implementation Method 2

directing the trapping beam at different locations at different time slots

Methodology Applied
Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 3

curing for 3D printing or other application(s), or alteration of the particle

Methodology Applied
Scientific EffectPhotopolymerization: Photopolymerisation

Data Source

PatentUS20250052659A1Electromagnetic Trap Multiplexing
Publication Date: 2025.02.13 BRIGHAM YOUNG UNIV
  • US20250052659A1 patent drawing
  • US20250052659A1 patent drawing
  • US20250052659A1 patent drawing

AI summary

Time multiplexing an electromagnetic trap beam may be used to generate trap shapes/geometries to trap one or more particles with one electromagnetic beam by directing the electromagnetic beam at a pattern of different locations with sufficient rapidity to form an effective shape/geometry. Additionally, multiplexing an electromagnetic trap beam may be used to shutter trapping electromagnetic radiation to protect a viewer, use the same beam for multiple functions, move and organize particles, and generate illumination effects.