Three-dimensional printing of highly conductive polymer nanocomposites for EMI shielding applications
By K. Chizari, Mohammad Arjmand, Zhe Liu, Uttandaraman Sundararaj, D. Therriault. 2017
165 citations recorded by the source corpus.
Abstract Here we applied three-dimensional (3D) printing of conductive microstructures for the functional optimization of lightweight and semi-transparent electromagnetic interference (EMI) shields. Highly conductive 3D printable inks with electrical conductivities up to ∼5000 S m−1 were fabricated from carbon nanotubes/polylactic acid (CNT/PLA) nanocomposites. Solvent-cast 3D printing enabled us to fabricate conductive scaffold microstructures and investigate the influence of various important structural parameters (i.e., inter-filament spacing, number of layers and printing patterns) on their transparency and EMI shielding effectiveness. The results revealed a significant improvement of the specific EMI shielding effectiveness of CNT/PLA nanocomposites printed as 3D scaffolds compared to CNT/PLA hot-pressed in solid forms (∼70 vs ∼37 dB g−1 cm3). The transparency of the scaffolds could vary from ∼0% to ∼75% by modifying their printing patterns and inter-filament spacing. To the best of our knowledge the conductivity of the fabricated ink is the highest among the other reported 3D printable polymer composite inks and this is the first reported systematic study on EMI shielding using a 3D printing technique. These results are highly beneficial for the fabrication and structural optimization of EMI shields where light and/or transparent structures are advantageous, such as in aerospace systems, portable electronic devices or smart fabrics.
Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/6fe2288d894abe25598e39627476aeeded2b23e5
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Aerospace Engineering
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Ink-based 3D printing technologies for graphene-based materials: a review (2019, methodology): “SC-DW technology has been applied to many areas, including electromagnetic interference (EMI) shielding [182] and liquid sensors [180, 183].”
- Extrusion-Based 3D Printing Applications of PLA Composites: A Review (2021, methodology): “It was suggested that the 3D-printed composites would be used as EMI shields for portable electronic devices, aviation, and space systems [146].”