Nanoinjector Mechanical Resonance for Precise Fluid Deposition
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Solution Overview
Problem
Existing additive fabrication techniques struggle to achieve nanometric layer deposition with precise control over fluid deposition, sufficient material variety, and continuous operation, particularly due to challenges in controlling fluid flow and interaction with substrates.
Innovation Solution
A system comprising a nanoinjector with a reservoir, non-deformable protuberance, and a mechanical resonator for controlled oscillation, coupled with control and detection mechanisms to adjust contact and oscillation frequency, enabling precise and continuous deposition of fluids on substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If local probe techniques (AFM or STM) are used for direct printing, then material diversity is improved, but manufacturing precision deteriorates due to uncontrolled fluid flow from the probe point
Solution Approach 1:
The probe point is made to oscillate mechanically at a specific frequency and amplitude, creating a dynamic deposition process. This vibration controls the fluid flow and interaction with the substrate, enabling precise nanometric layer deposition while maintaining the ability to handle diverse materials including polymers, biological molecules, and colloids
Solution Approach 2:
The system transitions from static probe deposition to dynamic oscillating probe deposition. The oscillation parameters (frequency, amplitude) can be adjusted to control the deposition characteristics, enabling continuous printing operation with precise control over fluid flow and layer thickness
2Adaptability or versatility
If AFM point is dipped into droplet or loaded with liquid material before deposition, then material variety is improved, but productivity deteriorates due to inability to effect continuous printing without a reservoir
Solution Approach 1:
A reservoir is pre-loaded with sufficient volume of liquid material before the deposition process begins. This preliminary preparation enables continuous printing operation without needing to re-load the probe point during the fabrication process, significantly improving productivity while maintaining material variety
3Manufacturing precision
If two-photon polymerization is used for indirect printing, then manufacturing precision is improved to achieve resolutions around one hundred nanometers, but device complexity increases and material selection is constrained to photopolymerizable materials only
Solution Approach 1:
The invention extracts and isolates the essential function of precise material deposition from the complex two-photon polymerization system. By using a simple oscillating probe point mechanism instead of laser-induced photopolymerization, the system achieves comparable nanometric resolution while dramatically reducing device complexity and expanding material selection beyond photopolymerizable resins to include polymers, biological molecules, and colloids
4Manufacturing precision
If electron beam assisted growth technique is used, then manufacturing precision can achieve one nanometer resolution, but adaptability deteriorates due to significant reduction of fabrication material possibilities and difficulty in controlling deposit precision
Solution Approach 1:
The invention replaces the electron beam mechanical system with a simple mechanical oscillation system. Instead of using electrons to bombard precursor gas, a mechanically oscillating probe point directly deposits liquid material. This substitution maintains nanometric precision while dramatically expanding material selection to any liquid material that can be held in the probe reservoir, including polymers, biological molecules, and colloids
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 deposition of diverse materials with adjustable parameters, achieving stable nanometric to micrometric layers with high precision and continuous operation, suitable for additive fabrication processes.
Implementation Method 1
a mechanical resonator fixed to said nanoinjector, said mechanical resonator being adapted to detect contact between said protuberance and said substrate
Data Source
AI summary
The present invention relates to a system for controlled deposition of a fluid on a substrate and also to a method employing the system. The system comprises:a nanoinjector,a mechanical resonator fixed to the nanoinjector, the mechanical resonator being adapted to detect contact between the nanoinjector and the substrate,control means of the mechanical resonator comprising:an excitation means adapted to cause the mechanical resonator to oscillate at an oscillation frequency (fi),a detector means adapted to detect the oscillation of the mechanical resonator,a regulator means adapted to adjust the contact between the nanoinjector and the substrate by controlling the oscillation of the mechanical resonator.