Harmonic Modulation of Standing Wavefields for Tissue Patterning
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Solution Overview
Problem
Current tissue engineering methods face challenges in creating complex biological structures due to limitations in biocompatibility, geometric constraints, and functionality of substrates, as well as the inability to generate complex non-material or virtual templates using acoustic standing waves.
Innovation Solution
A system and method for spatially focusing and patterning standing wavefields using multifrequency wave sources, control modules to modulate harmonic amplitudes, and analysis modules to calculate desired wavefield patterns, allowing for the creation of complex, stable nodal and antinodal regions for tissue engineering and other applications without requiring physical changes to the wave source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If physical substrates (2D surfaces or 3D scaffolds) are used to guide cell growth, then cells can be supported and organized into structures, but biocompatibility issues, geometric limitations, and functionality constraints arise
Solution Approach 1:
The patent replaces physical mechanical substrates (scaffolds and surfaces) with an acoustic field-based system. Acoustic standing waves create force fields that manipulate cells without requiring physical contact, thereby eliminating biocompatibility issues associated with substrate materials while maintaining the ability to guide cell organization and growth into complex three-dimensional structures
Solution Approach 2:
The patent introduces acoustic standing waves as an intermediary force field between the cell culture system and the desired structural outcome. This acoustic mediator enables precise spatial control of cell positioning and organization without the need for permanent physical templates, allowing dynamic reconfiguration of cell structures while maintaining biocompatibility
2Manufacturing precision
If simple standing-wave patterns are used for cell aggregation, then cells can be concentrated, but complex tissue microstructures cannot be formed
Solution Approach 1:
The patent employs dynamic control of acoustic wave parameters, including frequency modulation and phase control of multiple wave sources. This dynamic adjustment enables the acoustic field to transition from simple aggregation patterns to complex three-dimensional tissue microstructures, achieving high manufacturing precision without requiring permanently complex device configurations
Solution Approach 2:
The patent divides the acoustic field into multiple independent wave sources or transducers that can be individually controlled. By segmenting the wave generation system, complex tissue microstructures are formed through the coordinated interference of multiple simpler wave patterns, thereby achieving structural complexity without proportionally increasing overall system complexity
3Adaptability or versatility
If physical templates are used for tissue engineering, then cell organization is guided, but the templates create permanent structures that limit functionality and require degradation or removal
Solution Approach 1:
The patent replaces permanent physical templates with transient acoustic fields. The acoustic standing waves provide temporary guidance during cell organization, then can be removed or reconfigured without leaving permanent structural constraints. This enables programmable control of tissue development while avoiding the limitations of permanent scaffold materials
Solution Approach 2:
The patent uses periodic acoustic wave fields that can be dynamically adjusted in frequency, amplitude, and spatial distribution. This periodic action allows the template to be programmed for different stages of tissue development, then removed or modified as needed, providing adaptability without the constraints of permanent structural templates
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
Enables the generation of complex, stable tissue structures and patterns, overcoming previous limitations by providing a programmable, non-material template for tissue engineering and other applications, such as tissue patterning, cell manipulation, and microfluidic control without conventional devices.
Implementation Method 1
at least one wave source capable of generating waves at multiple frequencies, including a fundamental frequency and harmonics
Implementation Method 2
spatially focusing and patterning a standing wavefield
Implementation Method 3
a controller to modulate amplitudes of individual harmonics in order to generate a desired wavefield pattern
Implementation Method 4
an analyzer to calculate amplitudes of individual harmonics corresponding to a desired wavefield pattern, material structure, or material configuration
Data Source
AI summary
An system, and method are disclosed for harmonic modulation of standing wavefields for spatial focusing, manipulation, and patterning of particles, cells, powders, aerosols, colloids, and solids using a multifrequency wave source, a chamber a control module and an analysis module to generate standard wavefields useful for tissue engineering, micro fabrication, therapeutic treatment, and diagnostic tests.