BAW Resonator Fluid Port Layout for Faster Analyte Binding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fluidic devices with bulk acoustic wave resonators face limitations in biosensing and biochemical sensing due to slow diffusion of analytes, leading to stratified distribution and reduced binding rates, which prolong measurement times.
Innovation Solution
A fluidic device with a bulk acoustic wave resonator structure featuring a functionalized active region and orthogonal fluid flow, where fluid is introduced through a port registered with the active region, promoting mixing and increasing analyte binding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional fluidic devices with bulk acoustic wave resonators are used, then device structure is simple, but analyte diffusion is slow leading to stratified distribution and reduced binding rates
Solution Approach 1:
The patent introduces orthogonal fluid flow ports that inject fluid perpendicular to the active region surface, adding a vertical dimension to fluid introduction. This dimensional change creates turbulent mixing patterns that overcome the limited lateral diffusion in conventional horizontal flow configurations, thereby increasing analyte binding rates and reducing measurement time.
Solution Approach 2:
The patent employs hydraulic principles by using orthogonal fluid injection through specifically designed ports to create controlled turbulence and mixing in the fluid stream. This hydraulic approach uses fluid pressure and flow dynamics to enhance analyte distribution and contact with the functionalized active region, improving binding efficiency without requiring complex mechanical mixing components.
2Productivity
If orthogonal fluid flow is introduced through ports registered with the active region, then analyte mixing is enhanced and binding rates increase, but device structure becomes more complex
Solution Approach 1:
The orthogonal ports serve multiple functions: they introduce fluid flow, create turbulent mixing, and position analyte directly over the active region. This multi-functionality reduces the need for separate mixing chambers, pumps, or additional structural components, thereby enhancing binding rates while minimizing the increase in overall device complexity.
Solution Approach 2:
The patent modifies the fluid flow parameters by changing the injection direction from parallel to perpendicular relative to the active region surface. This parameter change in flow orientation, combined with strategic port positioning, generates enhanced mixing and contact efficiency without requiring substantial structural redesign, thus improving productivity with moderate complexity increase.
3Ease of operation
If fluid is introduced parallel to the active region surface, then device structure is simple, but analyte distribution becomes stratified reducing binding efficiency
Solution Approach 1:
The patent changes the fluid introduction direction from horizontal (parallel to surface) to vertical (perpendicular to surface) by positioning ports above the active region. This dimensional change in flow orientation prevents stratification by creating turbulent mixing that distributes analyte uniformly across the active region, thereby improving binding efficiency while maintaining ease of operation through straightforward orthogonal port configuration.
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 orthogonal fluid flow enhances analyte binding rates and reduces measurement time by minimizing stratification and facilitating faster diffusion of analytes to the functionalization material.
Implementation Method 1
An acoustic wave device employs an acoustic wave that propagates through or on the surface of a piezoelectric material, whereby any changes to the characteristics of the propagation path affect the velocity and/or amplitude of the wave
Implementation Method 2
Presence of functionalization material embodied in a specific binding material along an active region of an acoustic wave device permits a specific analyte to be bound to the functionalization material, thereby altering the mass being vibrated by the acoustic wave and altering the wave propagation characteristics
Implementation Method 3
Fluid is introduced in a direction orthogonal to a surface of the active region that bears a functionalization material. The orthogonal fluid flow promotes mixing proximate to the functionalized active region, thereby increasing binding of analyte
Implementation Method 4
slow diffusion of analytes, leading to stratified distribution and reduced binding rates
Data Source
AI summary
A fluidic device includes at least one bulk acoustic wave (BAW) resonator structure with a functionalized active region, and at least one first (inlet) port defined through a cover structure arranged over a fluidic passage containing the active region. At least a portion of the at least one inlet port is registered with the active region, permitting fluid to be introduced in a direction orthogonal to a surface of the active region bearing functionalization material. Such arrangement promotes mixing proximate to a BAW resonator structure surface, thereby reducing analyte stratification, increasing analyte binding rate, and reducing measurement time.