3D Nanoprinting Using Charged Aerosol Focusing

RAPID

Share this Article

In a paper entitled “Three-dimensional nanoprinting via charged aerosol focusing,” a group of researchers describes a 3D nanoprinting method to create versatile nanostructures that cannot easily be created with existing methods. They applied a floating dielectric mask concept combined with 3D translation of piezoelectic nanostage to focus charged aerosols through a convergent electrostatic field through apertures in the floating mask. By fine-tuning the 3D translation speed and direction of the nanostage, the researchers were able to determine the shape of the 3D nanostructures.

The researchers discovered that two different regimes – 3D growth mode and 3D writing mode – existed, depending on the translation velocity of the stage.

“In the 3D growth mode, the shape of structure is determined by adjusting the stage translation speed according to the growth rate of the structure,” the researchers explain. “Adding the horizontal movement of the stage enables the manufacturing of slanted structures in various angles. Precise 3-axis stage controlling can lead to complex 3D nanostructures. Relatively faster movement of stage would lead to 3D writing mode, in which nanoparticles cannot be accumulated upon the existing cluster and the movement of the stage makes a line of particles. This means that the multiple sweeping with a same orbit makes the writing of 3D nanostructures.”

The production of a scaffold for the parallel structure growth in 3D was based on a floating dielectric mask with an array of holes. The positively charged ions and aerosol nanoparticles created in a spark discharge were directed toward the mask and substrate by the electric field that controls the deposition process with the potential on the substrate.

“The role of the electric field is very complex: positive ions trapped by the mask out of the flow create a positively charged cushion on the mask,” the researchers continue. “The cushion is shaped by the electric field from the ion distribution on the mask hole array so that the resulting electric field is repelling for the aerosol nanoparticles everywhere over the mask except the hole regions where it produces narrow funnels.”

The nanoparticle stream focused within the funnels is directed to a given position on the substrate, controlled by the nanostage position. When the stage does not move, the pillars grow, and the mask hole array controls the resulting pillar array. By alternating the types of nanoparticles during the deposition, the pillars could be composed of complex, multiple materials.

“The full capacity of the 3D printing method is revealed when the stage moves controllably during the deposition process,” the researchers state. “The complete control over the structure growth shape becomes possible due to the further focusing of the electric field lines in the funnel onto exclusively the tip of the growing structure. The tip follows the electric field line and thus the latter plays the role of a drawing tool.”

The scaffold used by this method of 3D printing has no restrictions in terms of size, so it can be scaled down to atomic sizes or up to mescopic ones, according to the researchers. It can also be used with a wide variety of materials, opening up possibilities for producing hybrid structures needed in electronic devices.

Authors of the paper include Wooik Jung, Yoon-ho Jung, Peter V. Pikhitsa, Jooyeon Shin, Kijoon Bang, Jicheng Feng and Mansoo Choi.

Discuss this and other 3D printing topics at 3DPrintBoard.com or share your thoughts below.

 

Share this Article


Recent News

Iris van Herpen’s Spectacular Season: A 3D Printed Wedding Dress and Two Galas

NatureWorks Gets $350M Loan to Build PLA Manufacturing Plant in Thailand



Categories

3D Design

3D Printed Art

3D Printed Food

3D Printed Guns


You May Also Like

Model No. Deploys Titan Pellet 3D Printers for Sustainable Furniture Production

Over the years, many designers have tried to create 3D printed polymer furniture. Early pioneers like Janne Kyttanen, Materialise’s MGX, and Joris Laarman have led the way with 3D printed...

3D Printing News Unpeeled: Recycling PLA, More Efficient Atomizing

Filamentive hopes to recycle your PLA if you’re in the UK and order over £500 worth of filament. Their partner 3D Printing Waste (3DPW) will turn the PLA into injection...

Lighting the Way with Potato Starch: Sustainable Polish ECO Lamps Use 3D Printing

Lighting that meets the essence of nature: this is the reality brought to life by ECO Lamps, which introduces a fresh perspective to sustainable lighting design using potato starch. These...

3D Printing News Unpeeled: 3D Printed Construction Standard, Sand Wall & Self Heating Microfluidics

ISO/ASTM Standard 52939:2023 has been released and it sets standards for QA for 3D Printed polymer, composite and cement buildings. This is most welcome since 3D printed construction is a...