A Novel Microscale 3D Printing Based on Electric-Field-Driven Jet Deposition

This paper presents an electric-field-driven (EFD) jet deposition 3D printing technique, which is based on the induced electric field and electrohydrodynamic (EHD) cone-jetting behavior. Unlike the traditional EHD-jet printing with two counter electrodes, the EFD jet 3D printing only requires a nozzle electrode to induce an electric field between the nozzle and the target substrate. Taking into account both printing accuracy and printing efficiency, two novel working modes which involve pulsed cone-jet mode and continuous cone-jet mode, are proposed for implementing multi-scale 3D printing. In this work, significant relationships between the printing results and process parameters (voltage, air pressure, pulse duration time, and stage velocity) were investigated to guide the reliable printing in both working modes. Furthermore, the experimental studies were carried out to demonstrate the capabilities and advantages of the proposed approach, which included the suitability of various substrate, the capacity of conformal printing, and the diversity of the compatible materials. Finally, four typical printing results were provided to demonstrate the feasibility and effectiveness of the proposed technology for micro-scale 2D patterning and macro/microstructures multi-scale fabrication. As a result, this research provides a novel micro-scale 3D printing technique with low cost, high resolution and good generalizability. The breakthrough technique paves a way for implementing highresolution 3D printing, especially for multi-scale and multimaterial additive manufacturing.

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ELECTROHYDRODYNAMIC JET PRINTING: A 3D PRINTING TECHNIQUE FOR SENSOR FABRICATION

2016 Solid-State, Actuators, and Microsystems Workshop Technical Digest ◽

10.31438/trf.hh2016.42 ◽

2016 ◽

Author(s):

C.P. Pannier ◽

Z. Wang ◽

D.J. Hoelzle ◽

K.L. Barton

Keyword(s):

3D Printing ◽

Electrohydrodynamic Jet Printing ◽

Sensor Fabrication ◽

Printing Technique ◽

Jet Printing ◽

3D Printing Technique

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Fabrication of the large-area flexible transparent heaters using electric-field-driven jet deposition micro-scale 3D printing

Advanced Optical Technologies ◽

10.1515/aot-2019-0021 ◽

2019 ◽

Vol 8 (3-4) ◽

pp. 217-223 ◽

Cited By ~ 1

Author(s):

Hefei Zhou ◽

Xiaoyang Zhu ◽

Hongke Li ◽

Hongbo Lan

Keyword(s):

3D Printing ◽

Electric Field ◽

Sheet Resistance ◽

Heating Temperature ◽

Low Cost ◽

Optical Transmittance ◽

Adhesive Force ◽

High Viscosity ◽

Large Area ◽

Micro Scale

Abstract In order to realize the mass production of the large-area flexible transparent film heater (FTFH) at low-cost, this paper presents a novel method which can achieve the direct fabrication of the large-area FTFH with Ag-grid by using an electric-field-driven jet deposition micro-scale 3D printing. The effects of the line width and the pitch of the printed Ag-grids on the optical transmittance and the sheet resistance are revealed. A typical FTFH with area of 80 mm × 60 mm, optical transmittance of 91.5% and sheet resistance of 4.7 Ω sq−1 is fabricated by the nano-silver paste with a high silver content (80 wt.%) and high viscosity (up to 20 000 mPa · s). Temperature-time response profiles and heating temperature distribution show that the heating performance of the FTFH has good thermal and mechanical properties. Furthermore, the adhesive force grade between the Ag-grid and the PET substrate measured to be 4B by 3M scotch tape. Therefore, the FTFH fabricated here is expected to be widely used in industry, such as window defroster of vehicles and display or touch screens owing to its striking characteristics of large area and low cost fabrication.

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Could the Old Poly(methylmethacrylate) Face Arrising Challanges of New Advanced Technologies for Dental Prosthesis Manufacturing?

Revista de Chimie ◽

10.37358/rc.17.9.5832 ◽

2017 ◽

Vol 68 (9) ◽

pp. 2102-2107 ◽

Cited By ~ 2

Author(s):

Eugenia Eftimie Totu ◽

Corina Marilena Cristache

Keyword(s):

3D Printing ◽

Low Cost ◽

In Vivo Studies ◽

Basic Material ◽

Aesthetic Appearance ◽

Printing Technique ◽

Reliable Solution ◽

Contamination Wear ◽

3D Printing Technique

The biocompatibility, relatively low cost and excellent aesthetic appearance of polymer Poly(methyl methacrylate) (PMMA) makes it the material of choice for fabricating partially and complete dentures. Nowadays the emerging 3D printing technique imposed itself as reliable solution for obtaining dental devices. However, extensive usage of such technique is still limited due to the materials available. Despite PMMA�s drawbacks, mainly related to bacterial contamination, wear and mechanical failures, composite polymeric matrix has issued high interest lately. An important improvement in basic material properties have been achieved due to the inclusion of nanosystems, either nanoparticles or nanotubes. The newly shown versatility of reinforced PMMA sustains it as the best alternative for stereolithography (3D printing) technique. This paper highlights the improvements of PMMA by adding different type of nanofillers. Therefore, prospective randomized clinical in vivo studies with the use of biocompatible tested modified filled PMMA and modern technologies should be performed.

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Fabrication of Porous Hydrogenation Catalysts by a Selective Laser Sintering 3D Printing Technique

ACS Omega ◽

10.1021/acsomega.9b00711 ◽

2019 ◽

Vol 4 (7) ◽

pp. 12012-12017 ◽

Cited By ~ 6

Author(s):

Elmeri Lahtinen ◽

Lotta Turunen ◽

Mikko M. Hänninen ◽

Kalle Kolari ◽

Heikki M. Tuononen ◽

...

Keyword(s):

3D Printing ◽

Selective Laser Sintering ◽

Laser Sintering ◽

Hydrogenation Catalysts ◽

Printing Technique ◽

3D Printing Technique

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Combustion of toluene over cobalt-modified MFI zeolite dispersed on monolith produced using 3D printing technique

Catalysis Today ◽

10.1016/j.cattod.2020.04.005 ◽

2020 ◽

Cited By ~ 1

Author(s):

Anna Rokicińska ◽

Marek Drozdek ◽

Elżbieta Bogdan ◽

Adam Węgrzynowicz ◽

Piotr Michorczyk ◽

...

Keyword(s):

3D Printing ◽

Mfi Zeolite ◽

Printing Technique ◽

3D Printing Technique

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The Electric-Field-Driven Fusion Jetting 3D Printing for Fabricating High Resolution Polylactic Acid/Multi-Walled Carbon Nanotube Composite Micro-Scale Structures

Micromachines ◽

10.3390/mi11121132 ◽

2020 ◽

Vol 11 (12) ◽

pp. 1132

Author(s):

Xiaoqiang Li ◽

Guangming Zhang ◽

Wenhai Li ◽

Zun Yu ◽

Kun Yang ◽

...

Keyword(s):

Carbon Nanotube ◽

High Resolution ◽

3D Printing ◽

Electric Field ◽

Polylactic Acid ◽

Line Width ◽

Micro Scale ◽

Biomimetic Scaffolds ◽

Multi Walled Carbon Nanotube ◽

Scale Structures

Existing 3D printing techniques are still facing the challenge of low resolution for fabricating polymer matrix composites, inhibiting the wide engineering applications for the biomedical engineering (biomimetic scaffolds), micro fuel cells, and micro-electronics. In order to achieve high resolution fabrication of polylactic acid (PLA)/multi-walled carbon nanotube (MWCNT) composites, this paper presents an electric-field-driven (EFD) fusion jetting 3D printing method by combining the mixing effect and material feeding of the micro-screw and the necking effect of Taylor cone by the EFD. The effects of main process parameters (the carbon loading, the voltage, the screw speed, and the printing speed) on the line width and the printing quality were studied and optimized. To demonstrate the printing capability of this proposed method, meshes with line width of 30 µm to 100 μm and 1 wt.% to 5 wt.% MWCNT for the application of conductive biomimetic scaffold and the anisotropic flexible meshes were prepared. The electrical properties were investigated to present the frequency dependence of the alternating current conductivity and the dielectric loss (tanδ), and the microstructures of printed structures demonstrated the uniformly dispersed MWCNT in PLA matrix. Therefore, it provides a new solution to fabricate micro-scale structures of composite materials, especially the 3D conductive biomimetic scaffolds.

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