Project description

The project C4 focuses on the fabrication of multiscale and multiphase photonic structures by combining Additive Manufacturing methods with Colloidal Assembly  (AMCA) and Atomic Layer Deposition (ALD). The AMCA process combines the principles of colloidal self-assembly with the scalability and shape flexibility of direct writing to control the 3D geometry from the cm to µm scale and particle organization in the µm to nm scale. As a result the optical properties of the nanoscale and microscale building blocks are integrated into macroscopic multiscale 3D photonic structures. Meanwhile, the ALD process provides the ability of chemical composition and thickness control at an atomic to sub-nm scale with the possibility to develop tailor-made atomically-mixed systems and nanostructured systems. 

The main goal is to fabricate ceramic-based photonic structures for structural colors and reflective thermal barrier coatings (rTBC) on planar and curved substrates, where the ordering of the building blocks is locally controlled. 

We expect that this new fabrication route combining AMCA and ALD, developed for photonic structures, will be of relevance for other technological fields, such as catalysis, sensing, energy storage and generation.

Figure 1: (left) Schematic drawing of the automated printing of photonic structures onto an inclined substrate using the AMCA process1 and (right) HAADF-EDS color mapping analysis showing the nanostructuring in an ALD-based dual-phase ceramic photonic crystal shell (10.1016/j.jeurceramsoc.2021.02.007).


Project leader
Prof. Dr. Sc. Eng.
Kaline P. Furlan

Prof. Dr. rer. nat.
Gerold Schneider,


            atomic layer deposition


photonic glasses


structural color                   

       thermal barrier coatings


1. B.F. Winhard, et al.: Direct writing of colloidal suspensions onto inclined surfaces: Optimizing dispense volume for homogeneous structures. Journal of Colloid and Interface Science 597, 137-148 (2021)
DOI: 10.1016/j.jcis.2021.03.017

2. K.P. Furlan, et al.: Photonic materials for high-temperature applications: Synthesis and characterization by X-ray ptychographic tomography. Applied Materials Today 13, 359-369 (2018)
DOI: 10.1016/j.apmt.2018.10.002 - with Z2, C2 and Z3.

3. G. Shang, et al.: Highly selective photonic glass filter for saturated blue structural color. APL Photonics 4, 046101 (2019)
DOI: 10.1063/1.5084138 - with C2 and C5.

... and more on the list of publications.

open as PDF.