Tunable Elastomeric Nanochannels via Strain Modulation
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Solution Overview
Problem
Current methods for fabricating nanochannels for molecular confinement are complex, costly, and produce static channels with fixed cross-sectional dimensions, limiting their applicability in nanofluidic manipulation and biological assays.
Innovation Solution
The development of tunable elastomeric nanochannels using a substrate with a stiff thin film sandwiched by compliant materials, allowing for dynamic modulation of channel cross-sections through strain application, enabling size-selective transport and manipulation of molecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If standard microfabrication techniques are used to produce nanochannels, then nanochannels can be created with precise dimensions, but the fabrication process becomes complex and costly
Solution Approach 1:
The patent changes the material parameter from rigid to elastomeric, allowing the nanochannels to be formed through simple stretching of a elastomeric membrane rather than complex lithography and etching processes. This material parameter change enables the same precision to be achieved through mechanical deformation alone, dramatically simplifying the fabrication process while maintaining dimensional control.
Solution Approach 2:
The patent replaces the mechanical lithography and etching system with a purely mechanical stretching system. By stretching a elastomeric membrane containing microchannels, the nanochannels are formed through elastic deformation rather than through complex mechanical fabrication steps, thereby reducing device complexity while maintaining precision.
2Manufacturing precision
If standard microfabrication techniques are used to produce nanochannels, then nanochannels can be created with fixed dimensions, but the channels become static and cannot be manipulated during experiments
Solution Approach 1:
The patent introduces dynamics by using elastomeric materials that can be stretched and relaxed. The nanochannels transition from a static fixed dimension to a dynamic adjustable dimension, allowing real-time control of channel size during experiments through mechanical stretching, thereby enhancing adaptability and versatility.
Solution Approach 2:
The patent enables dynamic parameter changes in the nanochannel dimensions through elastomeric deformation. The channel cross-sectional dimensions can be continuously adjusted by controlling the stretch ratio of the elastomeric membrane, allowing the same channel to serve multiple functions with different dimensional parameters during different experimental phases.
3Manufacturing precision
If multiple complicated fabrication steps are used, then nanochannels can be produced, but the process becomes costly and time-consuming
Solution Approach 1:
The patent segments the fabrication process into a single essential step: stretching a elastomeric membrane containing microchannels. This segmentation eliminates the need for multiple separate fabrication steps such as lithography, etching, and bonding, thereby dramatically improving productivity while maintaining precision through the controlled deformation of the elastomeric material.
Solution Approach 2:
The patent replaces multiple complex mechanical fabrication steps with a single mechanical stretching operation. This substitution reduces the number of process steps required, thereby increasing fabrication efficiency and productivity while maintaining nanochannel formation precision through controlled elastic deformation.
4Manufacturing precision
If high temperature and pressure techniques like anodic bonding are used, then nanochannels can be formed, but the process becomes more complex and less versatile
Solution Approach 1:
The patent changes the fabrication parameters from high temperature and pressure conditions to simple mechanical stretching at room temperature. This parameter change eliminates the need for complex high-energy processes like anodic bonding, thereby reducing device complexity while maintaining precision through controlled elastomeric deformation.
Solution Approach 2:
The patent replaces high-energy thermal and pressure-based bonding mechanisms with a simple mechanical stretching mechanism. This substitution eliminates the need for complex anodic bonding processes, thereby reducing fabrication process complexity while achieving precise nanochannel formation through controlled elastic deformation of the elastomeric material.
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 allows for reversible modulation of nanochannel dimensions, facilitating the selective transport and trapping of molecules based on size and charge, enhancing the versatility and efficiency of nanofluidic manipulation in biological assays.
Implementation Method 1
tunable elastomeric nanochannels for nanofluidic manipulation... a substrate comprising at least one inlet and at least one outlet formed in the substrate, wherein the inlets and outlets are in fluid communication with one or more elastomeric nanochannels formed in the substrate... a component configured to exert strain on the nanochannels such the cross sections of the nanochannels are altered
Data Source
AI summary
The invention relates to tunable elastomeric nanochannels for nanofluidic manipulation. In particular, the present invention relates to nanochannels for performing biological assays.