Perforated Electrode Field Control for Cross-Scale 3D Printing
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Solution Overview
Problem
Existing 3D printing technologies face limitations in cross-scale printing of multiple metal materials, particularly in the micro-nano field, due to nozzle restrictions and poor controllability of electric field methods, which also suffer from surface contamination issues.
Innovation Solution
A device comprising a top electrode plate, configurable intermediate electrode plates with perforations, and a bottom electrode plate, where potentials and relative positions are adjusted to control the spatial electric field, allowing for precise control over the motion and distribution of charged substances to achieve flexible and controllable 3D printing across various scales.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If nozzle-based 3D printing methods (SLA, FDM, SLS, PolyJet) are used, then manufacturing capability is achieved, but material diversity is greatly limited and cross-scale printing of multiple metal materials cannot be accomplished
Solution Approach 1:
The patent removes the nozzle component entirely from the printing system. Instead of using a nozzle to deposit material, the invention uses an electric field to directly manipulate and deposit charged particles onto the substrate. This extraction of the nozzle eliminates the stringent requirements on material viscosity and other properties that nozzle-based systems impose, thereby dramatically expanding material diversity to include various metals, alloys, and charged substances.
Solution Approach 2:
The patent replaces the mechanical nozzle-based deposition system with an electric field-based control system. By using electric fields to manipulate charged particles, the system substitutes mechanical material delivery with electromagnetic field control. This substitution allows for precise control of particle deposition without the constraints of nozzle geometry and material flow properties, enabling diverse materials including metals to be printed.
2Manufacturing precision
If electric field control 3D printing with electrophoresis and electrostatic jetting is used, then micro-nano 3D printing of metal materials is enabled, but nozzle limitations still impose significant restrictions on material and size
Solution Approach 1:
The patent employs dynamically adjustable electrode plates with configurable potentials and positions. The electrode configuration can be changed in real-time to control the electric field distribution, allowing the system to adapt to different material types and size requirements. This dynamic control enables the same system to print various materials from metals to polymers and adjust particle sizes across a wide range without being constrained by fixed nozzle dimensions.
Solution Approach 2:
The patent utilizes configurable potentials applied to multiple electrode plates as adjustable parameters to control the electric field. By changing voltage levels, electrode positions, and plate configurations, the system can precisely control particle charging, motion trajectories, and deposition characteristics. This parameter control allows flexible adjustment of printing size and material properties without physical modifications to the system.
3Shape
If surface charges with self-regulating mechanism are used for virtual printing nozzles, then convergence of electric field lines is achieved, but controllability is poor and adjustment of printing size is limited
Solution Approach 1:
The patent introduces intermediate electrode plates as mediators between the charging electrode and substrate. These intermediate plates with perforations serve as controllable elements that shape and guide the electric field lines. By adjusting the potentials and positions of these intermediate electrodes, the system achieves precise control over field line convergence and particle deposition patterns, overcoming the poor controllability of surface charge-only methods.
Solution Approach 2:
The patent uses multiple electrode plates with configurable potentials to create controllable electric field patterns that replicate and enhance the natural convergence effect of surface charges. Instead of relying solely on passive surface charge accumulation, the system actively replicates and controls the field convergence through programmed electrode configurations, enabling precise control of printing size and location.
4Device complexity
If electric field-based virtual nozzles are used, then simple structure is achieved, but surface contamination can damage the print
Solution Approach 1:
The patent removes the nozzle component that is the source of surface contamination in traditional systems. By using electric fields to directly manipulate and deposit particles without physical contact through a nozzle, the system eliminates contamination from nozzle wear, material buildup, and mechanical contact. The electrode-based system maintains structural simplicity while avoiding the contamination issues inherent in nozzle-based approaches.
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 high flexibility and controllability in 3D printing, allowing structures from centimeters to nanometers to be printed, with capabilities in micro-nano processing, separation engineering, and signal processing, including functions like beam converging, signal modulation, and screening.
Implementation Method 1
Each of the top electrode plate, the intermediate electrode plates, and the bottom electrode plate has a configurable potential applied thereto... The spatial electric field is constructed such that the charged substances migrate to a specific position on the bottom electrode plate
Implementation Method 2
By utilizing methods like electrophoresis and electrostatic jetting, this technology pulls charged substances from the nozzle to assemble 3D structures on the substrate
Implementation Method 3
Each of the intermediate electrode plates is provided with a configurable number of perforations for electric field lines to pass through, so as to form motion channels of charged substances
Data Source
AI summary
A device for controlling a spatial electric field for desirable 3D printing is provided. By sequentially arranging a top electrode plate, a configurable number of intermediate electrode plates with perforations, and a bottom electrode plate, and altering their configurable potential, relative position, and the size, number, shape, and distribution of perforations on the plates, a focused electric field required for printing is constructed. This focused electric field can then focus, disperse, screen, and separate the charged substances within it. Furthermore, by adjusting the potentials of the plates, plate positions, and the perforation distribution on the plates, the strength and the shape of electric field lines for the spatial electric field can be modified, enabling control over the feature sizes and printing locations of the 3D nanoarchitectures, offering high flexibility, simplicity, and strong controllability. In addition, the presently disclosed device can be applied across various scales.