Direct Laser Interference Patterning

Modification of surface properties (e. g. layer adhesion, friction coefficient, reflection, biocompatibility) by direct laser interference patterning.
© Fraunhofer IWS
Modification of surface properties (e. g. layer adhesion, friction coefficient, reflection, biocompatibility) by direct laser interference patterning.

Fast laser-based methods for fabricating microstructures on polymers, metals, ceramics and coatings can be used to generate surface functions over large areas. In addition to the topography, the electrical, chemical and mechanical properties can also be varied periodically. These structured surfaces can be used in biotechnology, battery technology, photonics and tribology.

Our Range of Services Includes:

  • Development and assembly of compact systems for direct laser interference patterning (DLIP)
  • Fabrication of periodic and quasi-periodic surface structures on flat and complex components made of metal, plastic and ceramics
  • Modification of surface properties (e.g. layer adhesion, friction coefficient, reflection, biocompatibility)
  • Large-area structuring using DLIP and roll-to-roll technology
  • Topographic analysis of surfaces using confocal microscopy and white light interferometry

Research Topics


Surface Functionalization with DLIP


System Development



Internships and Theses


We Offer:

Student internships as well as topics and supervision of scientific theses.

Christoph Zwahr will be happy to answer questions about vacancies, content and timetables.



Center for Advanced Micro-Photonics (CAMP)

CAMP explores laser-based surface modification and patterning methods.



AI Testbench – Prediction models for laser precision manufacturing



Get an insight into the current publications of Fraunhofer IWS on direct laser interference patterning.



Sustainably and digitally driven hierarchical laser texturing for complex surfaces, Timeframe: 12/2022–11/2025 (EU, HORIZON, FKZ: 101091514)


Multi-level coupled laser production technology with AI-based decision platform, Timeframe: 08/2022–07/2025 (BMBF, FKZ: 02P20A055)


Advanced Light-weight BATteRy systems Optimized for fast charging, Safety, and Second-life applications, Timeframe: 01/2021–12/2024 (EU, HORIZON 2020, FKZ: 963580)


Laser-based processing of a novel near-beta Ti-Nb-Zr alloy for the production and functionalization of bone implants for patients with age-related osteoporosis, Timeframe: 12/2019–03/2022 (SMWK, FKZ: 100382988)


Pulsed Rapid ultra-short laser surface texturing for Manufacture of FlexiblE and CusTomisEd ProdUctS, Timeframe: 01/2019–12/2022 (EU, HORIZON 2020, FKZ: 825503)


Electrode structure designs for next-generation high-energy and high-performance batteries, Timeframe: 02/2019–10/2022 (BMBF, FKZ: 03XP0198G)

Fraunhofer Cluster of Excellence Advanced Photon Sources (CAPS)

New generation of ultrashort pulsed lasers and their application, Timeframe: 10/2021–12/2023 (Fraunhofer)


Replicative manufacturing of multifunctional microfluidic foils,  Timeframe: 07/2021–12/2023 (BMWK, FKZ: IGF project: 21934 BR)

News and Media


News / 28.7.2022

Better Batteries Thanks to DLIP on New Roll-to-roll System

Lightning-fast Structures for Current Conducting Foils


Press release / 2.3.2020

A Fast, Ecofriendly Way of De-icing Aircrafts

Surfaces Functionalized with Lasers