35 citations · 162 across the 14 of their papers we have counts for
14 papers
Electromagnetic Induction Imaging: Signal Detection Based on Tuned-Dressed Optical Magnetometry
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +3
A recently introduced tuning-dressed scheme makes a Bell and Bloom magnetometer suited to detect weak variations of a radio-frequency (RF) magnetic field. We envisage the applicati…
Electromagnetic induction imaging with a scanning radio-frequency atomic magnetometer
Cameron Deans, Yuval Cohen, Han Yao +3
We demonstrate electromagnetic induction imaging with an unshielded, portable radio-frequency atomic magnetometer scanning over the target object. This configuration satisfies stan…
Studying and applying magnetic dressing with a Bell and Bloom magnetometer
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +1
The magnetic dressing phenomenon occurs when spins precessing in a static field (holding field) are subject to an additional, strong, alternating field. It is usually studied when…
Spin dynamic response to a time dependent field
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +2
The dynamic response of a parametric system constituted by a spin precessing in a time dependent magnetic field is studied by means of a perturbative approach that unveils unexpect…
Validation of a fast and accurate magnetic tracker operating in the environmental field
Valerio Biancalana, Roberto Cecchi, Piero Chessa +4
We characterize the performance of a system based on a magnetoresistor array. This instrument is developed to map the magnetic field, and to track a dipolar magnetic source in the…
Fast, cheap, and scalable magnetic tracker with an array of magnetoresistors
Valerio Biancalana, Roberto Cecchi, Piero Chessa +3
We present the hardware of a cheap multi-sensor magnetometric setup where a relatively large set of magnetic field components is measured in several positions by calibrated magneto…
Ferromagnetic contamination of Ultra-Low-Field-NMR sample containers. Quantification of the problem and possible solutions
Giuseppe Bevilacqua, Valerio Biancalana, Marco Consumi +4
The presence of a weak remanence in Ultra-Low-Field (ULF) NMR sample containers is investigated on the basis of proton precession. The high-sensitivity magnetometer used for the NM…
Harmonic fine tuning and triaxial spatial anisotropy of dressed atomic spins
Giuseppe Bevilacqua, Valerio Biancalana, Antonio Vigilante +2
The addition of a weak oscillating field modifying strongly dressed spins enhances and enriches the system quantum dynamics. Through low-order harmonic mixing the bichromatic drivi…
Fast switching coil system for sample premagnetization in an unshielded ultra-low-field Nuclear Magnetic Resonance experiment
Valerio Biancalana, Roberto Cecchi, Leonardo Stiaccini +1
We present a system developed to premagnetize liquid samples in an ultra-low-field Nuclear Magnetic Resonance (NMR) experiment. Liquid samples of a few milliliter are exposed to a…
Sub-millimetric ultra-low-field MRI detected in situ by a dressed atomic magnetometer
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +1
Magnetic Resonance Imaging (MRI) is universally acknowledged as an excellent tool to extract detailed spatial information with minimally invasive measurements. Efforts toward ultra…
Spurious Ferromagnetic Remanence Detected by Hybrid Magnetometer
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +2
Nuclear magnetic resonance detection in ultra low field regime enables the measurement of different components of a spurious remanence in the polymeric material constituting the sa…
Restoring Narrow Linewidth to a Gradient-Broadened Magnetic Resonance by Inhomogeneous Dressing
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +1
We study the possibility of counteracting the line-broadening of atomic magnetic resonances due to inhomogeneities of the static magnetic field by means of spatially dependent magn…
Self-adaptive loop for external disturbance reduction in differential measurement set-up
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +1
We present a method developed to actively compensate common-mode magnetic disturbances on a multi-sensor device devoted to differential measurements. The system uses a field-progra…
Simultaneous Detection of H and D NMR Signals in a micro-Tesla Field
Giuseppe Bevilacqua, Valerio Biancalana, Yordanka Dancheva +3
We present NMR spectra of remote-magnetized deuterated water, detected in an unshielded environment by means of a differential atomic magnetometer. The measurements are performed i…