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Polymer-Based Microstructured Photonic Membrane for Passive Heating Textiles.

Mohamed Boutghatin¹, Salim Assaf², Pascal Tilmant²

¹Université de Lille, CNRS, Université Polytechnique Hauts-de-France, Centrale Lille, UMR 8520 - IEMN -Institut d'Electronique de Microélectronique et de Nanotechnologie, Lille F-59000, France.

|September 22, 2025

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This summary is machine-generated.

Researchers developed a new polyimide (PI)-based microstructured photonic membrane (MSPM) for passive heating textiles. This innovative fabric reduces heat loss, offering energy savings and personal thermal comfort.

Area of Science:

Materials Science
Textile Engineering
Photonics

Background:

Personal thermal management textiles offer a low-cost solution to reduce energy consumption in HVAC systems.
Reducing greenhouse gas emissions is a key environmental goal.
Existing solutions often lack efficiency or comfort.

Purpose of the Study:

To design and fabricate a polyimide (PI)-based microstructured photonic membrane (MSPM) for passive heating textiles.
To investigate the theoretical and experimental performance of the MSPM in reducing mid-infrared (MIR) radiation transmission.
To demonstrate the thermoregulatory effect and comfort-enhancing properties of the developed textile.

Main Methods:

Photolithography was used to create a triangular array of holes in the PI membrane.

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Theoretical calculations and experimental measurements were performed to assess MIR transmission.

Thermal imaging and thermocouple measurements were employed to demonstrate the thermoregulatory effect.

Main Results:

The MSPM was shown to effectively decrease the transmission of MIR radiation emitted by the human body.
Experimental validation confirmed the thermoregulatory effect, demonstrating the fabric's ability to warm the wearer.
The microstructured membrane exhibited air permeability and water-wicking properties.

Conclusions:

The PI-based MSPM is a promising material for developing effective passive heating textiles.
This technology can enable lower room temperatures while maintaining personal comfort, contributing to energy savings.
The membrane's properties open new avenues for thermal management textiles in everyday applications.