Publications de Arnaud Bertsch

Additive manufacturing of water-soluble 3D micro molds for complex-shaped lipid microparticles

Jürgen Brugger, Arnaud Bertsch, Jongeon Park

Micro and nanoparticles made from polymers, metals, ceramics, and lipids are crucial for biomedical devices, energy storage, and electronics. Traditional fabrication methods like grinding, milling, and emulsification result in monolithic shapes and heterog ...

2025

Combination of Thermal Scanning Probe Lithography and Directed Self-Assembly of Block Copolymers

Jürgen Brugger, Arnaud Bertsch, Berke Erbas

The fabrication of semiconductor quantum devices necessitates sub-20 nm features and high-density patterning, often exceeding the capabilities of current state-of-the-art lithographic techniques. To address this challenge, in this work, the combination of ...

SPIE2025

Electrical Stimulation of Trigeminal Nerve at the Anterior Nasal Septum in Healthy Individuals and Patients With Olfactory Dysfunction

Arnaud Bertsch, Clémentine Sophie Sarah Lipp

Background: The intranasal trigeminal system contributes to the sense of smell. Its integrity in olfactory dysfunction (OD) may be crucial for future treatments. This study assessed trigeminal sensitivity in healthy individuals and patients with OD of diff ...

2025

Beyond the Mask: Advancing Fabrication and Immersive Learning

Jürgen Brugger, Arnaud Bertsch, Jongeon Park, Berke Erbas, Chenxiang Zhang

This paper presents advances in micro and nanofabrication techniques beyond conventional lithographic masks with examples of inkj et printing, nanostencil lithography, molecular-level doping methods, and thermal scanning probe lithography. These methods en ...

IEEE2025

3D Lipid Microrobots for Simultaneous Delivery of Lipophilic and Hydrophilic Drugs

Jürgen Brugger, Arnaud Bertsch, Jongeon Park

This study presents the development of a 3D lipid microhelix capable of simultaneously delivering drugs with different characteristics, including water-soluble and poorly water-soluble drugs. Lipid microhelix encapsulating magnetic nanoparticles (MNPs) and ...

IEEE2025

Performance Comparison of Shape Memory Polymer Structures Printed by Fused Deposition Modeling and Melt Electrowriting

Jürgen Brugger, Arnaud Bertsch, Biranche Tandon, Taavet Kangur, Reza Farsi

Fused deposition modeling (FDM) and melt electrowriting (MEW) are techniques that use polymer fibers as building blocks for printing complex 3D structures, with fibers at the macroscopic and micrometer scale. Here, FDM and MEW are used to produce fibers of ...

Wiley2024

Microstructured plastic scintillators for pencil beam profiling in proton-therapy accelerators

Alessandro Mapelli, Arnaud Bertsch, Fabrizio Carbone, Simone Gargiulo, Veronica Leccese

A novel beam profiler based on microstructured scintillation resin is presented. The detector consists of a bundle of waveguides, featuring an active area of 30 x 30 mm2 with a fill factor of 50% and a pitch of 400 mu m. This configuration is obtained by c ...

Elsevier2024

Devices for the electrical stimulation of the olfactory system: A review

Jürgen Brugger, Arnaud Bertsch, Clémentine Sophie Sarah Lipp

The loss of olfactory function has a profound impact on quality of life, affecting not only sensory perception but also memory, emotion, and overall well-being. Despite this, advancements in olfactory prostheses have lagged significantly behind those made ...

Elsevier2024

Combining thermal scanning probe lithography and dry etching for grayscale nanopattern amplification

Jürgen Brugger, Andras Kis, Giovanni Boero, Georg Fantner, Arnaud Bertsch, Xia Liu, Marcos Penedo Garcia, Berke Erbas, Mitali Banerjee, Ana Conde Rubio

Grayscale structured surfaces with nanometer-scale features are used in a growing number of applications in optics and fluidics. Thermal scanning probe lithography achieves a lateral resolution below 10 nm and a vertical resolution below 1 nm, but its maxi ...

Springernature2024

Electrowriting of SU-8 Microfibers

Jürgen Brugger, Christophe Moser, Arnaud Bertsch, Sébastien Jiguet, Jorge Andres Madrid Wolff, Niyazi Ulas Dinç, Diego Armando Sandoval Salaiza

As microfiber-based additive manufacturing (AM) technologies, melt electrowriting (MEW) and solution electrowriting (SEW) have demonstrated efficacy with more biomedically relevant materials. By processing SU-8 resin using MEW and SEW techniques, a materia ...

MDPI AG2024