No success without a great team

Diversity is strength! We are happy to integrate and be inspired by people with different background.

Laser Tag 2019
Laser Tag 2019

press to zoom
Soccer Team 2019
Soccer Team 2019

press to zoom
Group in 2014
Group in 2014

press to zoom
Laser Tag 2019
Laser Tag 2019

press to zoom

Diversity is Strength! 



Avik joined Walther Lab in 2017 after earning his Ph.D. from the University of Münster, Germany in 2015 followed by a postdoctoral stay at the Northwestern University, USA. His research interests span a broad range of topics focusing largely self-assembly and complex system. Currently, he is an independent Alexander von Humboldt Postdoctoral Fellow developing metabolic processes in DNA-based protocells and investigating temperature-driven self-assembly in ssDNA-based nanostructures.


Dr. Xuyang Yao

Xuyang Yao obtained his B.S. degree in applied chemistry in 2011 and Ph.D. in applied chemistry in 2016 under the supervision of Professor He Tian from East China University of Science and Technology (ECUST). During his PhD, he also worked in a collaborative project that combined supramolecular self-assembling systems with nanopore technology with Professor Yitao Long’s group. After obtaining his PhD, he worked for one year in the same institute with Professor Xiang Ma to study room-temperature-phosphorescence materials before moving to the University of Freiburg/Mainz/Strasbourg as post-doc for the joint FRIAS-USIAS project between Profs. Andreas Walther and Nicolas Giuseppone.  His research interest focuses on controllable and functional supramolecular self-assemblies, polymers, and supramolecular light-responsive systems and optical materials.

Indrajit Maity.jpg

Dr. Indrajit Maity

Indrajit joined Walther Lab in early 2019 after obtaining his Ph.D from Indian Institute of Technology Indore (IIT Indore) in 2015 followed by a long term postdoctoral stay at Prof. Gonen Askenasy Lab in Ben-Gurion University of the Negev, Israel. His research interests focus on broad range of topics from supramolecular self-assembly to system chemistry including dissipative system, self-replication and non-linear phenomena such as bistability, oscillating reaction networks. Currently, he is working on the development of mechanical training-based polymer memory materials under out of equilibrium.


Dr. Aritra Sarkar

Aritra completed his masters in chemical science from Indian Institute of Technology, Guwahati in 2015, after which he joined as Subi J. George group as a Ph. D. student. He completed his Ph. D. in November 2020 with a thesis aiming at developing design strategies for multicomponent supramolecular polymerization and mechanistic investigation of supramolecular polymerization. From February 2021 he is working as a postdoctoral researcher in the Walther lab, where he will study transient covalent bonds with a target to integrate them into DNA-polymeric materials for homeostatic system engineering. 


Dr. Masashi Saitoh

Masashi Saitoh graduated the Nara Institute of Science Technology (NAIST) in Nara, Japan. His PhD studies focused on the "Photoluminescent gold complex in the solid state". After earning his PhD degree, he joined as a researcher in Osaka Research Institute of Science and Technology (ORIST), with the application of "Metal Nanopatricles for Printed Electronics".  Now he joins Walther Lab as a visiting researcher for a year. His research interest during stay focuses on stimuli-responsive 3D DNA origami nanoparticles assembly by the modification with metal nanoparticles.
I loves spending time with my family much.  Without work, my interests during stay are studying German and some kinds of beer in German.  Ich genieße meinen Aufenthalt und Bier in Deutschland!


Dr. Leonie Driessen - Lab Manager

Leonie studied Molecular Sciences at Wageningen University. She obtained her PhD at the Max Planck Institute for Polymer Research in December 2018, where she designed, built and tested an electrochemical tip-enhanced Raman spectrometer to investigate solid-liquid interfaces at the nanoscale. After working as a customer service engineer at PerkinElmer LAS, she joined the Walther group as a laboratory start-up manager from December 2020 on.


Cecilia Oluwadunsin Akintayo

I studied chemistry at Clausthal University of Technology and i'm now enrolled in the "Master of Sustainable Materials – Polymer Sciences" program at the University of Freiburg. Cecilia is now working on her PhD thesis in the framework of the DFG Cluster of Excellence livMatS and is interested in mechano-adaptive DNA hydrogels.


Guido Creusen

I joined the Walther group as a PhD candidate after completing my Chemistry degree at the RWTH Aachen University. The aim of my research is the development of bioinspired polymer hybrid materials with unusual mechanical and active properties.


Giorgio Fusi

Giorgio is originally from Varese, Italy. He completed his Bachelors and Masters degree in Chemistry at Lancaster University in the UK, with a focus on supramolecular and materials chemistry. Giorgio joined the Walther group in September 2019 as a PhD student, working on stimuli-responsive, adaptive and programmable hydrogel materials with a view to soft robotic applications. He is part of the ETN CREANET.


Saskia Groeer

After graduating from the RWTH Aachen I moved along with the Walther Group to Freiburg. My PhD topic aims at self-assembling bioinspired systems.


Jonas Heckel

Jonas Heckel studied chemistry in Freiburg and is now working on a PHD investigating the differences between dissipative environment and dissipative structure concepts for the design of hydrogel materials


Daniel Hoenders

Daniel Hoenders studied chemistry in Aachen and is now working on his PhD in the framework of light-swtichable and light-adaptive nanocellulose materials.


Claudius Lupfer

I joined the Walther group to complete my master degree in chemistry. Claudius is part of the livMatS Cluster and is working on materials that can be trained.


Wei Liu

I received my Master’s degrees from Beijing University of Chemical Technology, China. Now I am a PhD candidate in Walther group and my topic is about the fundamentals and applications of colloidal structures formed through phase-segregating DNA structures.


Francisco Lossada

Francisco joined the Walther Group as a PhD candidate after completing his Materials Engineer Diploma at the Simon Bolivar University in Venezuela. Currently he is a DAAD Scholarship Holder and his PhD topic aims at vitrimers and molecular engineering of bio-inspired nanocomposites and understanding of mechanical properties.

Charu Sharma.jpg

Charu Sharma

I received my Masters degree in Chemistry from Indian Institute of Technology Delhi (IIT Delhi) and my Masters thesis focussed on developing novel methods for the synthesis of organic compounds employing Photoredox Catalysis. Now i am working on my PhD thesis in the framework of European Training Network (ETN) and is interested in the autonomous and dynamic feedback driven self-assembly of bio-hybrid materials.

Oliver Skarsetz.jpg

Oliver Skarsetz

I received a Double-degree in the International Master program in Polymer Science between the University of Freiburg and Strasbourg. I am now a PhD candidate in the Walther group working on programmable auxetic metamaterials. I run the 3D printing infrastructure in the group. I am part of the Zeiss-funded iPROM Cluster.


Wenqian Yu

Wenqian studied between Uni-Freiburg and Uni-Strasbourg in an International Master programme in Polymer Science (IM-PolyS) after obtaining bachelor degree in applied chemistry in Nanjing Normal University. She is working on a PhD project in the realm of bioinspired nanocomposites.


Ricarda Schmidt

After completing my binational Bachelor Regio Chimica and doing an internship at Cerdia, I joined the Walther group during my Master studies in Chemistry for several research internships. Currently I am working on my master thesis investigating into mechanofluorescent hybrid materials at the intersection of bioinspired and synthetic polymer materials.


Sjoerd Engels

I received my Bachelors and Masters degrees in chemistry from Radboud University in the Netherlands, where I focused on molecular materials and polymer chemistry. I joined the Walther group in December 2020 as a Marie Curie VITRIMAT project, focusing on bioinspired nanocomposites involving vitrimeric phases. 


Joshua Krehan

I received my master’s degree in chemistry at the University of Mainz. After completing my master thesis at the Max Planck Institute for Polymer Research with a focus on polymeric micelles for drug delivery applications, I joined the Walther group as a PhD student in March 2021. My current research interests include the development of smart carrier systems with encapsulated pH-effects and pH-modulation systems. 

Johann Fritzen

I received my Bachelor’s degree in chemistry at the University of Mainz in 2019, where I was working on polymersome synthesis for drug delivery systems. In April 2021 I joined the Walther group for an internship and my Master’s thesis, which focuses on chemically driven supramolecular polymerization.


Lydia Braun and Romina Forst

Lydie and Romina are our two capable technicians, who keep the whole operation afloat! 


Renata Widera

Administrative Assistant to Andreas Walther and the whole team