High-sensitivity Q-band electron spin resonance imaging system with submicron resolution

Lazar Shtirberg; Ygal Twig; Ekaterina Dikarov; Revital Halevy; Michael Levit; Aharon Blank

doi:10.1063/1.3581226

High-sensitivity Q-band electron spin resonance imaging system with submicron resolution

Lazar Shtirberg, Ygal Twig, Ekaterina Dikarov, Revital Halevy, Michael Levit, Aharon Blank

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

A pulsed electron spin resonance (ESR) microimaging system operating at the Q-band frequency range is presented. The system includes a pulsed ESR spectrometer, gradient drivers, and a unique high-sensitivity imaging probe. The pulsed gradient drivers are capable of producing peak currents ranging from ∼9 A for short 150 ns pulses up to more than 94 A for long 1400 ns gradient pulses. Under optimal conditions, the imaging probe provides spin sensitivity of ∼1.6 10⁸ spinsHz or ∼2.7 10⁶ spins for 1 h of acquisition. This combination of high gradients and high spin sensitivity enables the acquisition of ESR images with a resolution down to ∼440 nm for a high spin concentration solid sample (∼10⁸ spinsm³) and ∼6.7 m for a low spin concentration liquid sample (∼6 10⁵ spinsm³). Potential applications of this system range from the imaging of point defects in crystals and semiconductors to measurements of oxygen concentration in biological samples.

Original language	English
Article number	043708
Journal	Review of Scientific Instruments
Volume	82
Issue number	4
DOIs	https://doi.org/10.1063/1.3581226
State	Published - 1 Apr 2011
Externally published	Yes

ASJC Scopus subject areas

Instrumentation

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title = "High-sensitivity Q-band electron spin resonance imaging system with submicron resolution",

abstract = "A pulsed electron spin resonance (ESR) microimaging system operating at the Q-band frequency range is presented. The system includes a pulsed ESR spectrometer, gradient drivers, and a unique high-sensitivity imaging probe. The pulsed gradient drivers are capable of producing peak currents ranging from ∼9 A for short 150 ns pulses up to more than 94 A for long 1400 ns gradient pulses. Under optimal conditions, the imaging probe provides spin sensitivity of ∼1.6 108 spinsHz or ∼2.7 106 spins for 1 h of acquisition. This combination of high gradients and high spin sensitivity enables the acquisition of ESR images with a resolution down to ∼440 nm for a high spin concentration solid sample (∼108 spinsm3) and ∼6.7 m for a low spin concentration liquid sample (∼6 105 spinsm3). Potential applications of this system range from the imaging of point defects in crystals and semiconductors to measurements of oxygen concentration in biological samples.",

author = "Lazar Shtirberg and Ygal Twig and Ekaterina Dikarov and Revital Halevy and Michael Levit and Aharon Blank",

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AU - Shtirberg, Lazar

AU - Twig, Ygal

AU - Dikarov, Ekaterina

AU - Halevy, Revital

AU - Levit, Michael

AU - Blank, Aharon

PY - 2011/4/1

Y1 - 2011/4/1

N2 - A pulsed electron spin resonance (ESR) microimaging system operating at the Q-band frequency range is presented. The system includes a pulsed ESR spectrometer, gradient drivers, and a unique high-sensitivity imaging probe. The pulsed gradient drivers are capable of producing peak currents ranging from ∼9 A for short 150 ns pulses up to more than 94 A for long 1400 ns gradient pulses. Under optimal conditions, the imaging probe provides spin sensitivity of ∼1.6 108 spinsHz or ∼2.7 106 spins for 1 h of acquisition. This combination of high gradients and high spin sensitivity enables the acquisition of ESR images with a resolution down to ∼440 nm for a high spin concentration solid sample (∼108 spinsm3) and ∼6.7 m for a low spin concentration liquid sample (∼6 105 spinsm3). Potential applications of this system range from the imaging of point defects in crystals and semiconductors to measurements of oxygen concentration in biological samples.

AB - A pulsed electron spin resonance (ESR) microimaging system operating at the Q-band frequency range is presented. The system includes a pulsed ESR spectrometer, gradient drivers, and a unique high-sensitivity imaging probe. The pulsed gradient drivers are capable of producing peak currents ranging from ∼9 A for short 150 ns pulses up to more than 94 A for long 1400 ns gradient pulses. Under optimal conditions, the imaging probe provides spin sensitivity of ∼1.6 108 spinsHz or ∼2.7 106 spins for 1 h of acquisition. This combination of high gradients and high spin sensitivity enables the acquisition of ESR images with a resolution down to ∼440 nm for a high spin concentration solid sample (∼108 spinsm3) and ∼6.7 m for a low spin concentration liquid sample (∼6 105 spinsm3). Potential applications of this system range from the imaging of point defects in crystals and semiconductors to measurements of oxygen concentration in biological samples.

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High-sensitivity Q-band electron spin resonance imaging system with submicron resolution

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