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Related Experiment Video

Updated: Aug 2, 2025

Melt Electrospinning Writing of Three-dimensional Poly(ε-caprolactone) Scaffolds with Controllable Morphologies for Tissue Engineering Applications

Melt Electrospinning Writing of Three-dimensional Poly(ε-caprolactone) Scaffolds with Controllable Morphologies for Tissue Engineering Applications

Published on: December 23, 2017

Multi-hierarchically Structural Polycaprolactone Composites with Tunable Electromagnetic Gradients for

Minghuan Hou¹, Yujia Feng¹, Siqi Yang¹

¹School of Materials Science and Engineering, Xihua University, Chengdu 610039, People's Republic of China.

Langmuir : the ACS Journal of Surfaces and Colloids

|April 17, 2023

Summary

This study developed advanced electromagnetic interference (EMI) shielding composites using a novel asymmetric hierarchical structure. The new materials achieve high shielding effectiveness and minimize radiation pollution for electronic devices.

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Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

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Published on: September 19, 2020

Area of Science:

Materials Science
Nanotechnology
Electromagnetics

Background:

Developing electromagnetic interference (EMI) shielding composites with high shielding effectiveness (SE) is crucial for next-generation electronics.
Minimizing secondary electromagnetic radiation pollution from shielding materials is a significant challenge.

Purpose of the Study:

To create asymmetric hierarchical polycaprolactone (PCL) composites for absorption-dominated EMI shielding.
To enhance EMI shielding performance by minimizing reflective properties and secondary pollution.

Main Methods:

Fabrication of asymmetric hierarchical PCL composites using alternate casting and electroless plating.
Incorporation of Fe3O4@rGO/Ni/Ag fillers to create gradient distributions.
Analysis of polarization loss and gradient effects on electromagnetic wave attenuation.

Main Results:

Achieved a remarkable EMI shielding effectiveness (SE) of 47.6 dB.
Significantly reduced the power coefficient of reflectivity (R) to 0.27.
Demonstrated enhanced absorption mechanism due to gradient filler distribution inducing magnetic and dielectric losses.

Conclusions:

The proposed strategy enables the development of absorption-dominated shielding materials with tunable EM performance.
The asymmetric hierarchical structure effectively enhances EMI shielding while reducing reflective pollution.
These materials are suitable for advanced electronic devices requiring superior EMI protection.