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Giovanni Boero

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Publications associées (86)

Thermal annihilation of photo-induced radicals following dynamic nuclear polarization to produce transportable frozen hyperpolarized 13C-substrates

Arnaud Comment, Giovanni Boero, Christophe Roussel, Tian Cheng, Andrea Capozzi

Hyperpolarization via dynamic nuclear polarization (DNP) is pivotal for boosting magnetic resonance imaging (MRI) sensitivity and dissolution DNP can be used to perform in vivo real-time 13C MRI. The type of applications is however limited by the relativel ...

Nature Publishing Group2017

Single-chip electron spin resonance detectors operating at 50 GHz, 92 GHz, and 146 GHz

Giovanni Boero, Jürgen Brugger, Jens Anders, Henrik Moodysson Rønnow, Ivica Zivkovic, Gabriele Gualco, Alessandro Valentino Matheoud

We report on the design and characterization of single-chip electron spin resonance (ESR) detectors operating at 50 GHz, 92 GHz, and 146 GHz. The core of the single-chip ESR detectors is an integrated LC-oscillator, formed by a single turn aluminum planar ...

Academic Press Inc - Elsevier Science2017

NMR spectroscopy of single sub-nL ova with inductive ultra-compact single-chip probes

Giovanni Boero, Franck Vincent, Nicola Harris, Beatrice Volpe, Marco Grisi

Nuclear magnetic resonance (NMR) spectroscopy enables non-invasive chemical studies of intact living matter. However, the use of NMR at the volume scale typical of microorganisms is hindered by sensitivity limitations, and experiments on single intact orga ...

Nature Research2017

Broadband IQ CMOS transceivers for compact and ultra-compact NMR probes

Giovanni Boero, Marco Grisi

2017

High sensitivity field asymmetric ion mobility spectrometer

Philippe Marmillod, Giovanni Boero, Jürgen Brugger, Mario Andres Chavarria Varon, Alessandro Valentino Matheoud

A high sensitivity field asymmetric ion mobility spectrometer (FAIMS) was designed, fabricated, and tested. The main components of the system are a 10.6 eV UV photoionization source, an ion filter driven by a high voltage/high frequency n-MOS inverter circ ...

American Institute of Physics2017

Probing strongly hybridized nuclear-electronic states in a model quantum ferromagnet

Giovanni Boero, Julian Piatek, Henrik Moodysson Rønnow, Ivan Kovacevic, Peter Babkevich

We present direct local-probe evidence for strongly hybridized nuclear-electronic spin states of an Ising ferromagnet LiHoF4 in a transverse magnetic field. The nuclear-electronic states are addressed via a magnetic resonance in the GHz frequency range usi ...

2016

NMR spectroscopy of subnanoliter ova with ultra-compact inductive probes

Giovanni Boero, Nicola Harris, Beatrice Volpe, Marco Grisi

2016

A low-power high-sensitivity single-chip receiver for NMR microscopy

Giovanni Boero, Jens Anders

In this paper, we present a fully-integrated receiver for NMR microscopy applications manufactured in a 0.13 mu m CMOS technology. The design co-integrates a 10-turn planar detection coil together with a complete quadrature, low-IF downconversion receiver ...

Academic Press Inc - Elsevier Science2016

A broadband single-chip transceiver for multi-nuclear NMR probes

Giovanni Boero, Gabriele Gualco, Marco Grisi

In this article, we present an integrated broadband complementary metal-oxide semiconductor single-chip transceiver suitable for the realization of multi-nuclear pulsed nuclear magnetic resonance (NMR) probes. The realized single-chip transceiver can be in ...

American Institute of Physics2015

Photoinduced Nonpersistent Radicals as Polarizing Agents for X-Nuclei Dissolution Dynamic Nuclear Polarization

Arnaud Comment, Jacques Van Der Klink, Giovanni Boero, Christophe Roussel, Tian Cheng, Tim Rolf Eichhorn, Jean-Noël Hyacinthe, Andrea Capozzi

Hyperpolarization via dissolution dynamic nuclear polarization (DNP) is a versatile method to dramatically enhance the liquid-state NMR signal of X-nuclei and can be used for performing metabolic and molecular imaging. It was recently demonstrated that ins ...

American Chemical Society2015

Cell force measurements in 3D microfabricated environments based on compliant cantilevers

Giovanni Boero, Jürgen Brugger, Mattia Marelli

We report the fabrication, functionalization and testing of microdevices for cell culture and cell traction force measurements in three-dimensions (3D). The devices are composed of bent cantilevers patterned with cell-adhesive spots not lying on the same p ...

Royal Soc Chemistry2014

Single-Cell 3D Bio-Mems Environment With Engineered Geometry And Physiologically Relevant Stiffnesses

Giovanni Boero, Jürgen Brugger, Mattia Marelli

We present a three dimensional (3D) microenvironment for on-chip cell culture, with engineered geometrical and mechanical properties. The device, named mu-flower, is based on micorfabricated cantilever beams bent out of plane by the intrinsic stresses of a ...

Ieee2014

Frequency jumps in single chip microwave LC oscillators

Giovanni Boero, Gabriele Gualco, Marco Grisi

We report on the experimental observation of oscillation frequency jumps in microwave LC oscillators fabricated using standard complementary metal-oxide-semiconductor technologies. The LC oscillators, operating at a frequency of about 20 GHz, consist of a ...

American Institute of Physics2014

Cryogenic single-chip electron spin resonance detector

Stefano Alberti, László Forró, Andrzej Sienkiewicz, Giovanni Boero, Jens Anders, Gabriele Gualco

We report on the design and characterization of a single-chip electron spin resonance detector, operating at a frequency of about 20 GHz and in a temperature range extending at least from 300 K down to 4 K. The detector consists of an LC oscillator formed ...

Academic Press Inc - Elsevier Science2014

Single Superparamagnetic Bead Detection and Direct Tracing of Bead Position Using Novel Nanocomposite Nano-Hall Sensors

Giovanni Boero, Ivo Utke, Laurent Bernau

We show that nanocomposite materials consisting of superparamagnetic nanoparticles embedded in a matrix are very good candidates for a novel generation of Hall nanosensors with high spatial and magnetic resolution, capable of detecting superparamagnetic be ...

Institute of Electrical and Electronics Engineers2013

Room temperature strong coupling between a microwave oscillator and an ensemble of electron spins

Giovanni Boero, Jürgen Brugger, Jens Anders, Radoslaw Lisowski, Gabriele Gualco, David Michael Suter

We demonstrate theoretically and experimentally the possibility to achieve the strong coupling regime at room temperature with a microwave electronic oscillator coupled with an ensemble of electron spins. The coupled system shows bistable behaviour, with a ...

Academic Press Inc - Elsevier Science2013

Active Integrated Tracking Detectors for MRI-Guided Interventions

Giovanni Boero, Jens Anders

De Gruyter2012

Integrated active tracking detector for MRI-guided interventions

Giovanni Boero, Jens Anders, Paul Sangiorgio

We present a fully integrated detector suitable for active tracking of interventional devices in MR-guided interventions. The single-chip microsystem consists of a detection coil, a tuning capacitor, an intermediate frequency downconversion receiver, and a ...

Wiley2012

A fully integrated IQ-receiver for NMR microscopy

Giovanni Boero, Jens Anders, Paul Sangiorgio

We present a fully integrated CMOS receiver for micro-magnetic resonance imaging together with a custom-made micro-gradient system. The receiver is designed for an operating frequency of 300 MHz. The chip consists of an on-chip detection coil and tuning ca ...

Academic Press Inc - Elsevier Science2011

Photon energy dependence of the light pressure exerted onto a thin silicon slab

Franz-Karl Reinhart, Giovanni Boero

We review the theory of ponderomotive forces of classical nonionizing electromagnetic (EM) radiation exerted on dispersive matter. Minkowski's EM energy and momentum density lack any dispersion term in contrast to Nelson's theory, where they are included n ...

2011

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