3D Matter Made to Order

Cluster of Excellence of Karlsruhe Institute of Technology (KIT) & Heidelberg University

3D Matter Made to Order

3D Additive Manufacturing Driven Towards the Molecular Scale

The Cluster of Excellence is a collaboration of Karlsruhe Institute of Technology (KIT) and Heidelberg University (Uni HD). It pursues an interdisciplinary approach through conjunction of natural, engineering, and social sciences. 3DMM2O establishes scalable digital 3D Additive Manufacturing transcending from the molecular to the macroscopic scale.

This approach converts digital information into functional materials, devices and systems “made to order.” 3DMM2O creates a powerful technology push and pull by treating molecular materials, technologies and applications as indissolubly intertwined.

On the technology side, the scientific challenges are “finer, faster, and more”, i.e., advance molecular materials and technologies in terms of resolution, speed, and multi-material printing by orders of magnitude.

On the application side, we aim at functional 3D hybrid optical and electronic systems, 3D artificial materials called metamaterials, and at reconstructing functioning organotypic systems by using 3D scaffolds for cell culture.

Cluster Spokespersons

Martin Wegener

Prof. Dr. Martin Wegener
Karlsruhe Institute of Technology
E-Mail: martin wegener∂kit edu

Uwe Bunz

Prof. Dr. Uwe Bunz
Heidelberg University
E-Mail: uwe bunz∂oci uni-heidelberg de


Photographs of diverse 3D printed structuresDong et al. 2021
New Functional Materials in 3D Printing


Cluster scientists have developed new functional materials to extend the possibilities of 3D Nanoprinting. In a paper published in Nature Communications, they show their results: 3D polymer structures of highly complex geometries and spatially controlled pore sizes from 10 nm to 1000 µm. This new approach extends the scope of applications of 3D printing to hierarchical inherently porous 3D objects.

Read the Paper
IntervieweesCluster 3DMM2O / Agentur Triebfeder
Interviews with Carl Zeiss Scholarship holders


The Cluster 3DMM2O has a lot of talented Young Researchers. In order two increase their visibility, we have published two interviews with female Carl Zeiss Foundation Scholarship holders Britta Weidinger (A3) and Tamara Molitor (C3). In the interviews, they talk about their research and the role of the CZF Scholarship Program for their academic career.

Watch the Interviews
Image of Christine Selhuber-UnkelTobias Schwerdt
New PI: Prof. Dr. Selhuber-Unkel


The Cluster 3DMM2O warmly welcomes Prof. Dr. Christine Selhuber-Unkel as a new PI. Prof Dr. Selhuber-Unkel is head of the Molecular Systems Engineering research group at the Institute for Molecular Systems Engineering (IMSE) of Heidelberg University and will conduct research in Thrust B1 of the Cluster. Furthermore, she recently received an ERC Consolidator Grant for her project „Photomechanical writing of cell functions“ (PHOTOMECH) which aims at regulating cell functions through external physical forces.

Find Out More
Portrait Frauke GräterHITS / Annette Mück
ERC Consolidator Grant for PI Frauke Gräter


Cluster Principal Investigator Frauke Gräter receives an ERC Consolidator Grant for her project „Mechanoradicals in Collagen“ (RADICOL), which focuses on radicals caused by excessive mechanical stress on collagen, the protein which provides structural and mechanical stability to the connective tissues in the human body.

Read the Press Release
View of the feature exhibition of the Science Museum London in Antenna - 3D: Printing the future . Science Museum London / Jennie Hills (CC BY-NC-SA)
ITAS Symposium: Re-imagining the futures of 3D printing in society

The Carl Zeiss Foundation Vision Assessment Study is organizing a scientific symposium that will bring together leading experts on 3D printing in the social sciences and humanities to foster the international debate on 3D printing in society. It will take place online March 23 to 24, 2021. Registration deadline for participation with or without poster is January 15, 2021.

Find out more and register
Conference 3DMM2O
Registration Open: Cluster Conference

Future 3D Additive Manufacturing - The 3DMM2O Conference on 3D Hybrid Organotypic Systems will take place online March 1-4, 2021. The revised program will be available soon. Registrations are open!

Register here