Processing

Please wait...

Settings

Settings

Goto Application

1. WO2016139419 - METHOD AND DEVICE FOR VERY HIGH SENSITIVITY ELECTRON SPIN RESONANCE SPECTROSCOPY

Publication Number WO/2016/139419
Publication Date 09.09.2016
International Application No. PCT/FR2016/050467
International Filing Date 02.03.2016
IPC
G01N 24/10 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
24Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
10by using electron paramagnetic resonance
G01R 33/60 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
60using electron paramagnetic resonance
CPC
G01N 24/10
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
24Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
10by using electron paramagnetic resonance
G01R 33/34015
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
28Details of apparatus provided for in groups G01R33/44 - G01R33/64
32Excitation or detection systems, e.g. using radio frequency signals
34Constructional details, e.g. resonators ; , specially adapted to MR
34015Temperature-controlled RF coils
G01R 33/3614
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
28Details of apparatus provided for in groups G01R33/44 - G01R33/64
32Excitation or detection systems, e.g. using radio frequency signals
36Electrical details, e.g. matching or coupling of the coil to the receiver
3614RF power amplifiers
G01R 33/60
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
60using electron paramagnetic resonance
Applicants
  • COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES [FR]/[FR]
Inventors
  • BERTET, Patrice
  • MOELMER, Klaus
Agents
  • DELUMEAU, François
Priority Data
155178603.03.2015FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD AND DEVICE FOR VERY HIGH SENSITIVITY ELECTRON SPIN RESONANCE SPECTROSCOPY
(FR) PROCEDE ET DISPOSITIF DE SPECTROSCOPIE DE RESONANCE DE SPIN ELECTRONIQUE DE TRES HAUTE SENSIBILITE.
Abstract
(EN)
The device for detecting and characterising electron spins in a sample (201) comprises an electromagnetic microresonator (202), having a resonant frequency cor in the microwave range and a quality factor Q and into which the sample (201) is inserted; a device for creating a magnetic field B0 in the sample (201) for bringing a spin transition frequency cos into resonance with the resonant frequency cor, such that cos = yB0, where γ is a gyromagnetic factor of the spins; a spin detection device receiving signals from the electromagnetic microresonator (202) associated with the sample (201) and comprising at least one low-noise amplifier operating at a temperature of between 1 and 10 K and a series of amplifiers and a demodulator operating at ambient temperature. The electromagnetic microresonator (202) is made from superconducting metal and is produced on the nanometre scale, comprising an active area formed by a substantially parallelepiped constriction (220), with a thickness of between 8 and 30 nm, a width of between 10 and 500 nm and a length of between 100 and 5000 nm. The device has improved sensitivity and allows samples of a very small size to be analysed.
(FR)
Le dispositif pour la détection et la caractérisation de spins électroniques dans un échantillon (201) comprend un micro-résonateur électromagnétique (202), ayant une fréquence de résonance cor dans le domaine micro-onde et un facteur de qualité Q et dans lequel est inséré l'échantillon (201); un dispositif de création d'un champ magnétique B0 dans l'échantillon (201) pour amener à résonance avec la fréquence de résonance cor une fréquence cos de transition des spins, telle que cos=yB0, où γ est un facteur gyromagnétique des spins; un dispositif de détection de spins recevant des signaux du micro-résonateur électromagnétique (202) associé à l'échantillon (201) et comprenant au moins un amplificateur bas-bruit fonctionnant à une température comprise entre 1 et 10 K et une série d'amplificateurs et un démodulateur fonctionnant à température ambiante. Le micro-résonateur électromagnétique (202) est en métal supraconducteur et est réalisé à l'échelle nanométrique en comprenant une zone active constituée par une constriction (220) essentiellement parallélépipédique, avec une épaisseur comprise entre 8 et 30 nm, une largeur comprise entre 10 et 500 nm et une longueur comprise entre 100 et 5000 nm. Le dispositif présente une sensibilité améliorée et permet l'analyse d'échantillons de très petite taille.
Also published as
Latest bibliographic data on file with the International Bureau