Publications de Jürgen Brugger

Additive manufacturing of flexible, biodegradable drug implants for sustained multi-drug release into the cochlea

Sensorineural hearing loss is a profound form of deafness, arising from damage to cochlear hair cells, which can be treated by limited clinical options such as cochlear implants. However, the implantation procedure carries the inherent risk of electrode in ...

2025

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

Arnaud Bertsch, Jürgen Brugger, 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

Arnaud Bertsch, Jürgen Brugger, 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

Superconducting microwave oscillators as detectors for ESR spectroscopy

Giovanni Boero, Jürgen Brugger, Yu Rao, Reza Farsi

Microwave superconducting resonators are extensively studied in fields such as quantum computing and electron spin resonance (ESR) spectroscopy. However, the integration of superconducting resonators with feedback mechanisms to create ultra-low noise oscil ...

2025

Beyond the Mask: Advancing Fabrication and Immersive Learning

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

Arnaud Bertsch, Jürgen Brugger, 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

Near-Room-Temperature Detection of Aromatic Compounds with Inkjet-Printed Plasticized Polymer Composites

Thomas Maeder, Jürgen Brugger, Mohammadmahdi Kiaee

Chemiresistive gas sensors composed of a thermoplastic polymer matrix and conductive fillers offer various advantages for detecting volatile organic compounds (VOCs), including low power consumption due to near-room-temperature operation, high sensitivity, ...

Amer Chemical Soc2024

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

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

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

Multi- and Gray-Scale Thermal Lithography of Silk Fibroin as Water-Developable Resist for Micro and Nanofabrication

Jürgen Brugger, Ya Wang, Mohammadreza Rostami

Silk fibroin (SF) is a natural material with polymorphic structures that determine its water solubility and biodegradability, which can be altered by exposing it to heat. Here, a hybrid thermal lithography method combining scalable microscale laser-based p ...

Wiley2024

Deterministic grayscale nanotopography to engineer mobilities in strained MoS2 FETs

Giovanni Boero, Andras Kis, Jürgen Brugger, Georg Fantner, Nicola Marzari, Norma Rivano, Zhenyu Wang, Xia Liu, Ana Conde Rubio, Berke Erbas, Mitali Banerjee, Jin Jiang, Marcos Penedo Garcia

Field-effect transistors (FETs) based on two-dimensional materials (2DMs) with atomically thin channels have emerged as a promising platform for beyond-silicon electronics. However, low carrier mobility in 2DM transistors driven by phonon scattering remain ...

Nature Research2024

Tomographic microscopy of functionally graded polymer-derived SiCN ceramics with tunable gradients

Jürgen Brugger, Lorenz Hagelüken

Polymer-derived ceramics (PDCs) are a very attractive class of materials due to their excellent properties such as resistance to high temperatures and harsh environments, adjustability of mechanical and functional behavior, and compatibility with a broad r ...

Elsevier Sci Ltd2024

All-Printed Finger-Inspired Tactile Sensor Array for Microscale Texture Detection and 3D Reconstruction

Jürgen Brugger

Electronic skins are expected to replicate a human-like tactile sense, which significantly detects surface information, including geometry, material, and temperature. Although most texture features can be sensed in the horizontal direction, the lack of eff ...

2024

MixedLAB: Mixed Reality to Teach Students Experimental Knowledge in Microfabrication

Jürgen Brugger

We are developing a new approach to leverage Mixed Reality (MR) affordances for teaching microfabrication processes, such as performed in a cleanroom. Our goal is to design interactive MR content to improve microfabrication and cleanroom training practices ...

2024

Laser-Induced Forward Transfer of SU-8 Microdisks as Carriers of Metallic Microdevices

Giovanni Boero, Jürgen Brugger, Zhiwei Yang

Laser-induced forward transfer (LIFT) is a digital additive manufacturing technique that uses a pulsed laser to transfer various materials from a donor film to a receiver substrate placed in close proximity. In this work, we investigate the transfer of SU- ...

Institute of Electrical and Electronics Engineers2024

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

Arnaud Bertsch, Jürgen Brugger, 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

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

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

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

MEWron: An open-source melt electrowriting platform

Jürgen Brugger, Christophe Moser, Taavet Kangur

Melt electrowriting (MEW) is a distinct class of additive manufacturing technologies that generates fibrous and porous macrostructures with microscale resolution from an electrically charged molten polymer. The high -resolution scaffolds produced by MEW ha ...

2023

Ferroelectric gating of two-dimensional semiconductors for the integration of steep-slope logic and neuromorphic devices

Mihai Adrian Ionescu, Jürgen Brugger, Ali Saeidi, Carlotta Gastaldi, Sadegh Kamaei Bahmaei, Xia Liu

The co-integration of logic switches and neuromorphic functions could be used to create new computing architectures with low power consumption and novel functionalities. Two-dimensional (2D) semiconductors and ferroelectric materials could be potentially u ...

NATURE PORTFOLIO2023

Liquid-in-a-MEMS: Encapsulation of Liquid in a Microcapsule by Inkjet Printing

Arnaud Bertsch, Jürgen Brugger, Jongeon Park

IEEE2023