Electrohydrodynamic Printing for Advanced Micro/Nanomanufacturing: Current Progresses, Opportunities, and Challenges

2018 ◽  
Vol 6 (4) ◽  
Author(s):  
Yiwei Han ◽  
Jingyan Dong
Keyword(s):  
Additive Manufacturing ◽  
High Resolution ◽  
Potential Application ◽  
Printed Electronics ◽  
Photonic Devices ◽  
Critical Factors ◽  
Biomedical Sensors ◽  
Electrohydrodynamic Printing ◽  
Nanoscale Fabrication ◽  
Printing Processes

The paper provides an overview of high-resolution electrohydrodynamic (EHD) printing processes for general applications in high-precision micro/nanoscale fabrication and manufacturing. Compared with other printing approaches, EHD printing offers many unique advantages and opportunities in the printing resolution, tunable printing modes, and wide material applicability, which has been successfully applied in numerous applications that include additive manufacturing, printed electronics, biomedical sensors and devices, and optical and photonic devices. In this review, the EHDs-based printing mechanism and the resulting printing modes are described, from which various EHD printing processes were developed. The material applicability and ink printability are discussed to establish the critical factors of the printable inks in EHD printing. A number of EHD printing processes and printing systems that are suitable for micro/nanomanufacturing applications are described in this paper. The recent progresses, opportunities, and challenges of EHD printing are reviewed for a range of potential application areas.

scholarly journals High-Resolution Electrohydrodynamic Printing of Silver Reactive Inks

MRS Advances ◽  
2016 ◽  
Vol 1 (34) ◽  
pp. 2409-2414 ◽  
Author(s):  
Christopher Lefky ◽  
Galen Arnold ◽  
Owen Hildreth
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Inkjet Printing ◽  
Solid Metal ◽  
Electrohydrodynamic Printing ◽  
Annealing Step ◽  
Scale Structures ◽  
Fine Resolution ◽  
Printing Processes ◽  
Continuous Material

ABSTRACTNano-inkjet printing using an Electrohydrodynamic's (EHD) pulsed cone-jet approach has the potential to bring affordable additive manufacturing to the micro and nanoscale. Ink technology is a major limitation of current EHD techniques. Specifically, most EHD printing processes print either nanoparticles or polymers. The materials are structurally weak and often have poor electrical or mechanical properties. For example, printing nanoparticles effectively creates a cluster of nanoparticles that must be sintered to create a continuous material. To address these issues, we have been adapting reactive inks to work with an EHD pulsed cone-jet. Specifically, we demonstrate that silver micron-scale structures can be printed using an EHD pulsed cone-jet regime. These inks produce solid structures without sintering steps and with good electrical properties.1,2 This work shows that reactive ink chemistries can be combined with EHD printing to produce fine-resolution features consisting of solid metal without an annealing step.

scholarly journals The Use of a Water Soluble Flexible Substrate to Embed Electronics in Additively Manufactured Objects: From Tattoo to Water Transfer Printed Electronics

Micromachines ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 474 ◽  
Author(s):  
Brice Le Borgne ◽  
Emmanuel Jacques ◽  
Maxime Harnois
Keyword(s):  
Additive Manufacturing ◽  
Potential Application ◽  
Printed Electronics ◽  
Flexible Substrate ◽  
Electronic Devices ◽  
Water Transfer ◽  
Water Soluble ◽  
Transfer Printing ◽  
Process Flow ◽  
3D Objects

The integration of electronics into the process flow of the additive manufacturing of 3D objects is demonstrated using water soluble films as a temporary flexible substrate. Three process variants are detailed to evaluate their capabilities to meet the additive manufacturing requirements. One of them, called water transfer printing, shows the best ability to fabricate electronics onto 3D additively manufactured objects. Moreover, a curved capacitive touchpad hidden by color films is successfully transferred onto the 3D objects, showing a potential application of this technology to fabricate fully additively manufactured discrete or even hidden electronic devices.

An Investigation onto Polydimethylsiloxane (PDMS) Printing Plate of Multiple Functional Solid Line by Flexographic

2013 ◽  
Vol 844 ◽  
pp. 158-161 ◽  
Author(s):  
M.I. Maksud ◽  
Mohd Sallehuddin Yusof ◽  
M. Mahadi Abdul Jamil
Keyword(s):  
Laser Ablation ◽  
Line Width ◽  
High Speed ◽  
Printed Electronics ◽  
Low Cost ◽  
Flexible Substrates ◽  
Large Area ◽  
Printing Plate ◽  
Roll To Roll ◽  
Printing Processes

Recently low cost production is vital to produce printed electronics by roll to roll manufacturing printing process like a flexographic. Flexographic has a high speed technique which commonly used for printing onto large area flexible substrates. However, the minimum feature sizes achieved with roll to roll printing processes, such as flexographic is in the range of fifty microns. The main contribution of this limitation is photopolymer flexographic plate unable to be produced finer micron range due to film that made by Laser Ablation Mask (LAMs) technology not sufficiently robust and consequently at micron ranges line will not be formed on the printing plate. Hence, polydimethylsiloxane (PDMS) is used instead of photopolymer. Printing trial had been conducted and multiple solid lines successfully printed for below fifty microns line width with no interference between two adjacent lines of the printed images.

scholarly journals An Ergonomic Customized-Tool Handle Design for Precision Tools using Additive Manufacturing: A Case Study

2018 ◽  
Vol 8 (7) ◽  
pp. 1200 ◽  
Author(s):  
Alfonso González ◽  
David Salgado ◽  
Lorenzo García Moruno ◽  
Alonso Sánchez Ríos
Keyword(s):  
Additive Manufacturing ◽  
Efficient Method ◽  
Potential Application ◽  
Parametric Design ◽  
Parametric Model ◽  
Hand Size ◽  
Custom Design ◽  
Laparoscopic Grasper ◽  
Design And Manufacture

A study was carried out with 135 surgeons to obtain a surgical laparoscopic grasper handle design that adapts to the size of each surgeon’s hand, in a functionally appropriate way, and has the sufficient ergonomics to avoid generating the problems detected nowadays. The main conclusion of the work is the practical 3D parametric design obtained for a laparoscopic surgical graspers handle that is scalable to fit each particular surgeon's hand size. In addition, it has been possible to determine that the anthropometric measure of the surgeon's hand defined as Palm Length Measured (PLM) allows the design of the 3D parametric model of the surgical handle to be conveniently scaled. The results show that both additive manufacturing and the application of ergonomics criterion provide an efficient method for the custom design and manufacture of this type of specialised tool, with potential application in other sectors.

Drop-on-Demand Electrohydrodynamic Printing of High Resolution Conductive Micro Patterns for MEMS Repairing

2018 ◽  
Vol 19 (6) ◽  
pp. 811-819 ◽  
Author(s):  
Young Jin Yang ◽  
Hyung Chan Kim ◽  
Memoon Sajid ◽  
Soo wan Kim ◽  
Shahid Aziz ◽  
...  
Keyword(s):  
High Resolution ◽  
On Demand ◽  
Drop On Demand ◽  
Electrohydrodynamic Printing ◽  
Micro Patterns

High resolution electrochemical additive manufacturing of microstructured active materials: case study of MoSx as a catalyst for the hydrogen evolution reaction

2021 ◽  
Author(s):  
Christian Iffelsberger ◽  
Martin Pumera
Keyword(s):  
Additive Manufacturing ◽  
High Resolution ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Materials

It is demonstrate that following the principle of additive manufacturing, in high-resolution electrochemical additive manufacturing, MoSx structures can be constructed by electrochemically driven, localized and layered deposition of material.

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