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Giovanni Boero

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Publications associées (86)

Stretchable Conductors Fabricated by Stencil Lithography and Centrifugal Force-Assisted Patterning of Liquid Metal

Giovanni Boero, Jürgen Brugger, Yi-Chiang Sun

Embedding liquid metals (LMs) into an elastomer is emerging as a promising strategy for stretchable conductors. Existing manufacturing techniques are struggling between spatial resolution and process complexity and are limited to chemically resistant subst ...

2021

Single chip dynamic nuclear polarization microsystem

Giovanni Boero, Gabriele Gualco, Alessandro Valentino Matheoud, Marco Grisi, Nergiz Sahin Solmaz

Integration of the sensitivity-relevant electronics of nuclear magnetic resonance (NMR) and electron spin resonance (ESR) spectrometers on a single chip is a promising approach to improve the limit of detection, especially for samples in the nanoliter and ...

2020

Miniaturized mr device comprising a cell culture micro-chamber and method for manufacturing such a device

Giovanni Boero, Jürgen Brugger, Marco Grisi, Gaurasundar Marc Conley

MR device (100) comprising a miniaturized magnetic resonance system (101) and a cell culture chamber (502) for the analysis of biological samples of less than about 1000 µm in size, wherein said device (100) is at least partially covered by a passivation-b ...

2020

NMR microsystem for label-free characterization of 3D nanoliter microtissues

Giovanni Boero, Jürgen Brugger, Lukas Egli, Marco Grisi, Erika Riva, Gaurasundar Marc Conley, Kyle Joel Rodriguez

Performing chemical analysis at the nanoliter (nL) scale is of paramount importance for medicine, drug development, toxicology, and research. Despite the numerous methodologies available, a tool for obtaining chemical information non-invasively is still mi ...

Nature Research2020

Electron paramagnetic resonance magnetic field sensors for particle accelerators

Giovanni Boero, Alessandro Valentino Matheoud, Anthony Jean Beaumont, Marco Buzio

We report on four electron paramagnetic resonance sensors for dynamic magnetic field measurements at 36 mT, 100 mT, 360 mT, and 710 mT. The sensors are based on grounded co-planar microwave resonators operating at about 1 GHz and 3 GHz, realized using prin ...

2020

Thermal and pH Sensitive Composite Membrane for On-Demand Drug Delivery by Applying an Alternating Magnetic Field

Giovanni Boero, Jürgen Brugger, Xiao Sheng Zhang, Ya Wang

Implantable drug delivery systems that can realize a scheduled drug release according to the needs of patients would be highly beneficial for the treatment of chronic diseases and cancer. Here, micrometer‐sized hydrogel particles with both thermal and pH s ...

2020

Thermomechanical Nanostraining of Two-Dimensional Materials

Giovanni Boero, Jürgen Brugger, Samuel Tobias Howell, Xia Liu, Ana Conde Rubio

Local bandgap tuning in two-dimensional (2D) materials is of significant importance for electronic and optoelectronic devices but achieving controllable and reproducible strain engineering at the nanoscale remains a challenge. Here, we report on thermomech ...

American Chemical Society (ACS)2020

Thermomechanical Nanocutting of 2D Materials

Giovanni Boero, Jürgen Brugger, Samuel Tobias Howell, Xia Liu, Ana Conde Rubio

Atomically thin materials, such as graphene and transition metal dichalcogenides, are promising candidates for future applications in micro/nanodevices and systems. For most applications, functional nanostructures have to be patterned by lithography. Devel ...

Wiley2020

Reversible Drug Delivery: Thermal and pH Sensitive Composite Membrane for On‐Demand Drug Delivery by Applying an Alternating Magnetic Field (Adv. Mater. Interfaces 17/2020)

Giovanni Boero, Jürgen Brugger, Xiao Sheng Zhang, Ya Wang

In article number 2000733 by Juergen Brugger and co‐workers, a novel composite membrane of silk fibroin, microgels and magnetic nanoparticles whose permeability can be adjusted by temperature for controlled drug release is studied. The temperature induced ...

2020

Microwave inductive proximity sensors with sub-pm/Hz1/2 resolution

Giovanni Boero, Alessandro Valentino Matheoud, Lénaïc Frehner, Nergiz Sahin Solmaz

Inductive proximity sensors are low-cost and versatile detectors achieving resolutions in the nm and sub-nm range. Their typical working frequency ranges from tens of kHz to a few MHz. Operation at higher frequencies is considered as a possible route for t ...

2019

A single-chip integrated transceiver for high field NMR magnetometry

Giovanni Boero, Marco Grisi, Gaurasundar Marc Conley

We present the design and performance of a broad-band single-chip integrated transceiver specifically conceived for nuclear magnetic resonance magnetometry. The single-chip transceiver is realized using a standard silicon complementary metal-oxide-semicond ...

AMER INST PHYSICS2019

CMOS and 3D Printing for NMR Spectroscopy at the Single Embryo Scale

Johann Michler, Giovanni Boero, Martinus Gijs, Franck Vincent, Jürgen Brugger, Nicola Harris, Enrica Montinaro, Laszlo Pethö, Beatrice Volpe, Marco Grisi, Maria Cristina Letizia

SWISS CHEMICAL SOC2019

Ferrimagnetic resonance field sensors for particle accelerators

Giovanni Boero, Anthony Jean Beaumont, Marco Buzio

We report on two ferrimagnetic resonance (FMR) sensors for absolute dynamic magnetic field measurements at 36 and 100 mT. The sensors are designed to mark precisely and reproducibly the moment when a time-transient magnetic field attains a specific value. ...

AMER INST PHYSICS2019

Harnessing Poisson Effect to Realize Tunable Tunneling Nanogap Electrodes on PDMS Substrates for Strain Sensing

Giovanni Boero, Jürgen Brugger, Henry Shao-Chi Yu

Nanogap electrodes (NGEs) are a fundamental structure for the exploration of nanoscale phenomena. In this paper, we describe the fabrication and the electro-mechanical characterization of tunable tunneling NGEs on a stretchable PDMS substrate. Bottom-up ca ...

IEEE2019

A Low-Power Microwave HEMT $LC$ Oscillator Operating Down to 1.4 K

Giovanni Boero, Alessandro Valentino Matheoud, Nergiz Sahin Solmaz

High-electron-mobility transistors (HEMTs) based on 2-D electron gases (2DEGs) in III-V heterostructures have superior mobility compared with the transistors of silicon-based complementary metal-oxide-semiconductor technologies. The large mobility makes th ...

Institute of Electrical and Electronics Engineers2019

Biodegradable Frequency‐Selective Magnesium Radio‐Frequency Microresonators for Transient Biomedical Implants

Giovanni Boero, Jürgen Brugger, Matthieu Jean Michel Rüegg, Remo Blum

Bioresorbable implantable medical devices show a great potential for applications requiring medical care over well‐defined periods of time. Once their function is fulfilled, such implants naturally degrade and resorb in the body, which eliminates adverse l ...

2019

Transient Electronics: Biodegradable Frequency‐Selective Magnesium Radio‐Frequency Microresonators for Transient Biomedical Implants (Adv. Funct. Mater. 39/2019)

Giovanni Boero, Jürgen Brugger, Matthieu Jean Michel Rüegg, Remo Blum

In article number 1903051, Matthieu Rüegg, Juergen Brugger, and co-workers design, fabricate, and characterize biodegradable magnesium microresonators using an innovative microfabrication process based on ion beam etching. Under a radio-frequency magnetic ...

2019

A single chip electron spin resonance detector based on a single high electron mobility transistor

Giovanni Boero, Alessandro Valentino Matheoud, Nergiz Sahin Solmaz

Single-chip microwave oscillators are promising devices for inductive electron spin resonance spectroscopy (ESR) experiments on nanoliter and subnanoliter samples. Two major problems of the previously reported designs were the large minimum microwave magne ...

Academic Press Inc - Elsevier Science2018

Cleaning strategy for carbon-based electrodes: Long-term propofol monitoring in human serum

Giovanni Boero, Giovanni De Micheli, Irene Taurino, Francesca Stradolini, Tugba Kilic

In this work, we present a novel electrochemical cleaning procedure for long-term electrochemical monitoring of propofol by using boron-doped diamond (BDD) and pencil graphite electrode (PGE). Propofol is an anesthetic that is widely used for long-lasting ...

2018

3D printed microchannels for sub-nL NMR spectroscopy

Johann Michler, Giovanni Boero, Martinus Gijs, Jürgen Brugger, Enrica Montinaro, Laszlo Pethö, Marco Grisi, Maria Cristina Letizia

Nuclear magnetic resonance (NMR) experiments on subnanoliter (sub-nL) volumes are hindered by the limited sensitivity of the detector and the difficulties in positioning and holding such small samples in proximity of the detector. In this work, we report o ...

2018

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