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Yu-Wei Chang nailed his PhD thesis on January 7th, 2026. Congrats!

Thesis nailing by Yu-Wei Chang. (Photo by C. Khanolkar.)
Yu-Wei Chang nailed his PhD thesis, A Unified Software-Generating Framework for Biological Data Analysis, on January 7th, 2026. Congrats!

The nailing took place in Universitetsbyggnaden i Vasaparken, Universitetsplatsen 1, Göteborg, at 13:30.

In Swedish academia, “nailing” (spikning) is the formal public announcement and publication of a doctoral thesis. It happens weeks before the defence so that the public has time to read the thesis in advance and prepare questions for the defence. In addition to the physical nailing, the thesis is also published electronically (e-spikning) via GUPEA.

Yu-Wei will defend his thesis on 23 January at 13:00 in SB-H7 lecture hall, SB-Building, Institutionen för fysik, Johanneberg Campus, Göteborg.

Thesis (GUPEA handle): http://hdl.handle.net/2077/90289

Thesis Nailing by B. García Rodríguez, 7 January 2026. Congrats!

Thesis nailing by Berenice García Rodríguez. (Photo by C. Khanolkar.)
On 7 January at 13:00, Berenice García Rodríguez nailed her PhD thesis, Quantitative Optical Microscopy of Microscale Soft Matter Systems, at the University of Gothenburg in Vasaparken.
Family and friends were present to mark this milestone.

Berenice will defend her thesis on 28 January at 09:00 in PJ-salen, Institutionen för fysik, Origovägen 6, Göteborg.

Thesis Nailing by F. Skärberg, 7 January 2026. Congrats!

Thesis nailing by Fredrik Skärberg. (Photo by E. Skärberg.)
On 7 January at 12:30, Fredrik Skärberg nailed his PhD thesis, From Light to Data: Using Deep Learning for Quantitative Microscopy, at the University of Gothenburg in Vasaparken. Family and friends were present to mark this milestone.

Fredrik will defend his thesis on 29 January at 09:00 in FB-salen, Institutionen för fysik, Origovägen 6, Göteborg.

Inchworm-Inspired Soft Robot with Groove-Guided Locomotion on ArXiv

Photograph of the soft robot, consisting of a multilayer rolled dielectric elastomer actuator integrated with a
flexible PET sheet. (Image by H. P. Thanabalan.)
Inchworm-Inspired Soft Robot with Groove-Guided Locomotion
Hari Prakash Thanabalan, Lars Bengtsson, Ugo Lafont, Giovanni Volpe
arXiv: 2512.07813

Soft robots require directional control to navigate complex terrains. However, achieving such control often requires multiple actuators, which increases mechanical complexity, complicates control systems, and raises energy consumption. Here, we introduce an inchworm-inspired soft robot whose locomotion direction is controlled passively by patterned substrates. The robot employs a single rolled dielectric elastomer actuator, while groove patterns on a 3D-printed substrate guide its alignment and trajectory. Through systematic experiments, we demonstrate that varying groove angles enables precise control of locomotion direction without the need for complex actuation strategies. This groove-guided approach reduces energy consumption, simplifies robot design, and expands the applicability of bio-inspired soft robots in fields such as search and rescue, pipe inspection, and planetary exploration.

Jesus Pineda defended his PhD thesis on November 11th, 2025. Congrats!

Jesus Pineda defended his PhD thesis on November 11th, 2025. Congrats!
The defense took place in SB-H7 lecture hall, Institutionen för fysik, Johanneberg Campus, Göteborg, at 9:00.

Title: Inductive Biases for Efficient Deep Learning in Microscopy

Abstract: Deep learning has become an indispensable tool for the analysis of microscopy data, yet its integration into routine research remains uneven. Several factors contribute to this gap, including the limited availability of well-annotated datasets and the high computational demands of modern architectures. Microscopy introduces further challenges, as it spans diverse modalities and scales, from proteins to tissues, producing heterogeneous data that defy standardization. Generating reliable annotations also requires expertise and time, while unequal access to high-performance computing further widens the divide between well-resourced institutions and smaller laboratories.

This dissertation argues that the prevailing paradigm of scaling models with ever-larger datasets and computational resources yields diminishing returns for microscopy. Instead, it explores the role of inductive biases as a foundation for building models that are more data-efficient, computationally accessible, and scientifically meaningful. Inductive biases are structural assumptions embedded in model design that guide learning toward patterns aligned with the underlying problem. The first part of this work examines their central role in the advancement of modern deep learning and the diverse ways they shape model behavior.

This potential is demonstrated through three case studies. First, MAGIK employs graph neural networks to analyze biological dynamics in time-lapse microscopy, uncovering local and global properties with high precision, even when trained on limited data. Next, MIRO leverages recurrent graph neural networks to process single-molecule localization datasets, improving the efficiency and reliability of clustering for variable biological structures and scales while retaining strong generalization with minimal supervision. Finally, GAUDI introduces a representation learning framework for characterizing biological systems, providing a physically meaningful representation space for interpretable and transferable analysis.

The findings presented here demonstrate that the integration of inductive biases provides a cohesive strategy to extend the reach of deep learning in the life sciences, enhancing accessibility and ensuring scientific utility under resource constraints.

Thesis: https://gupea.ub.gu.se/items/672c7946-51d6-4773-ad8c-35a3eed41499

Supervisor: Giovanni Volpe
Co-Supervisor: Carlo Manzo
Examiner: Raimund Feifel
Opponent: Anna Kreshuk
Committee: Juliette Griffié, Daniel sage, Daniel Persson
Alternate board member: Jonas Enger

Andrea Schiano di Colella joins the Soft Matter Lab

Andrea Schiano di Colella. (Photo by A. Ciarlo.)
Andrea Schiano di Colella started his PhD at the Physics Department of the University of Gothenburg on the 24th of October 2025.

Andrea has a Master degree in Theoretical Physics from the University of Naples “Federico II”, Italy.

During the course of his PhD, as part of the GREENS MSCA Doctoral Network he will focus on the development of deep learning based protocols for accurate autonomous microscopy.

Martin Selin defended his PhD thesis on October 8th, 2025. Congrats!

Cover of the PhD thesis. (Image by M. Selin.)
Martin Selin defended his PhD thesis on October 8th, 2025. Congrats!
The defense took place in PJ, Institutionen för fysik, Origovägen 6b, Göteborg, at 13:00.

Title: Advanced and Autonomous Applications of Optical Tweezers

Abstract: Optical tweezers have become a central tool, using lasers to manipulate and probe objects with exceptional precision enabling single-molecule, single-cell, and single-particle studies. However, this precision comes at the cost of throughput.

By developing a fully autonomous system we can adress this limitation of optical tweezers. The system is capable of perfoming multiple different experiments independently and of operating for over 10 hours continously. Using the same system we also investigate particle adsorption into liquid-liquid interfaces revealing never before seen dynamics.

These developments help optical tweezers by bridging the gap between single-molecule, cell or particle studies and ensemble measurements, enabling the application of deep learning for advanced modeling and unlocking the potential of optical tweezers for large, data-driven studies.

Thesis: https://gupea.ub.gu.se/handle/2077/87446?show=full

Supervisor: Giovanni Volpe
Examiner: Raimund Feifel
Opponent: Borja Ibarra
Committee: Dag Hanstorp, Timo Betz, Kristine Berg-Sørensen
Alternate board member: Paolo Vinai

Workshop by Y.-W. Chang at NEMES 2025, Gothenburg, 26 September 2025

Massimiliano Passaretti (left) and Yu-Wei Chang (right) at NEME 2025. (Photo courtesy of Clarion Hotel Draken.)
Graph theory and deep learning pipelines
Yu-Wei Chang, Massimiliano Passaretti
NEMES 2025, 24-26 September, 2025
Date: 25 September 2025
Time: 12:45 – 14:00
Place: Clarion Hotel Draken

This workshop begins with a practical introduction to graph theory, then guides participants through BRAPH 2 to build connectomes, compute graph measures, and run group comparisons, followed by a hands-on deep-learning pipeline. It demonstrates a unified GUI/command-line workflow, a unique architecture of BRAPH 2, helping participants move smoothly from the GUI to scripts. This workshop also guides participants to reproduce multiplex and deep-learning results on their computers from the BRAPH 2 bioRxiv preprint.
 

Presentation by Y.-W. Chang at NEMES 2025, Gothenburg, 26 September 2025

From images to graphs, this plenary shows how parcellations and tractography become connectomes and how network analysis reveals brain-network signatures. (Image by Y.-W. Chang.)
Network analysis of neuroimaging data, and deep learning pipelines
Yu-Wei Chang
NEMES 2025, 24-26 September, 2025
Date: 25 September 2025
Time: 09:00 – 09:45
Place: Clarion Hotel Draken

This plenary presents a practical framework for analysing neuroimaging data with network science and deep learning. It moves from modality-specific preprocessing to graph construction (single-layer and multiplex), then covers core graph measures, group inference, and brain-surface visualization, highlighting recent work from Associate Professor Joana B. Pereira’s group (Department of Clinical Neuroscience, Karolinska Institutet). It also introduces deep-learning pipelines for neuroimaging data: reservoir-computing memory capacity analysis, GapNet for handling missing data, and a robust feature-attribution method combined with SNP (single nucleotide polymorphism) information. The plenary concludes with the BRAPH 2 framework, which supports these pipelines and extends to other ongoing projects (e.g., light-sheet microscopy, Raman spectroscopy).