Work

Tuning infrared radiative properties using Direct Laser Interference Patterning

Year: 2025

Type: article

Abstract: • Tailoring of infrared emissivity using Direct Laser Interference Patterning (DLIP). • Experimental validation of emissivity modification through spectral measurements. • Agreement between measured emissivity trends and Rigorous Coupled-Wave Analysis (RCWA) simulations. • Demonstration of directional dependence of emissivity on patterned stainless steel surfaces. In this contribution, the feasibility of tailoring the radiative properties of stainless steel via Direct Laser Interference Patterning (DLIP) is introduced. By fabricating periodic micro- and nano-structures, emissivity is enhanced and made directionally dependent, as evidenced by direct spectral measurements and supported by Rigorous Coupled-Wave Analysis (RCWA) simulations. The experimental findings reveal that the modified surface acts as a spectrally selective emitter with a strong dependence on the emission direction, which is in good overall agreement with the predictions made by Maxwell’s equations. These results show DLIP’s potential for high-throughput, mask-free surface modification, with significant implications for fine-tuning of thermal management, radiative cooling, and related photonic applications.

Source: Materials Letters

DOI: 10.1016/j.matlet.2025.138485

Authors: Jon Gabirondo-López, Marcos Soldera, Josu M. Igartua, Andrés Fabián Lasagni, Gabriel A. López

Institutions: University of the Basque Country, Technische Universität Dresden, Fraunhofer Institute for Material and Beam Technology

Language: English

Topic: Thermal Radiation and Cooling Technologies

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,870

Funders: Werner Siemens-Stiftung, Eusko Jaurlaritza, Euskal Herriko Unibertsitatea