Relaxometry and Dephasing Imaging of Superparamagnetic Magnetite Nanoparticles Using a Single Qubit

Dominik Schmid-Lorch; Thomas Haeberle; Friedemann Reinhard; Andrea Zappe; Michael Slota; Lapo Bogani; Amit Finkler; Joerg Wrachtrup

doi:10.1021/acs.nanolett.5b00679

Relaxometry and Dephasing Imaging of Superparamagnetic Magnetite Nanoparticles Using a Single Qubit

Dominik Schmid-Lorch, Thomas Haeberle, Friedemann Reinhard, Andrea Zappe, Michael Slota, Lapo Bogani, Amit Finkler, Joerg Wrachtrup

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

Abstract

To study the magnetic dynamics of superparamagnetic nanoparticles, we use scanning probe relaxometry and dephasing of the nitrogen vacancy (NV) center in diamond, characterizing the spin noise of a single 10 nm magnetite particle. Additionally, we show the anisotropy of the NV sensitivitys dependence on the applied decoherence measurement method. By comparing the change in relaxation (T₁) and dephasing (T₂) time in the NV center when scanning a nanoparticle over it, we are able to extract the nanoparticles diameter and distance from the NV center using an Ornstein-Uhlenbeck model for the nanoparticles fluctuations. This scanning probe technique can be used in the future to characterize different spin label substitutes for both medical applications and basic magnetic nanoparticle behavior.

Original language	English
Pages (from-to)	4942-4947
Number of pages	6
Journal	Nano Letters
Volume	15
Issue number	8
DOIs	https://doi.org/10.1021/acs.nanolett.5b00679
State	Published - 12 Aug 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/acs.nanolett.5b00679

http://arxiv.org/abs/1505.02811License: Other

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title = "Relaxometry and Dephasing Imaging of Superparamagnetic Magnetite Nanoparticles Using a Single Qubit",

abstract = "To study the magnetic dynamics of superparamagnetic nanoparticles, we use scanning probe relaxometry and dephasing of the nitrogen vacancy (NV) center in diamond, characterizing the spin noise of a single 10 nm magnetite particle. Additionally, we show the anisotropy of the NV sensitivitys dependence on the applied decoherence measurement method. By comparing the change in relaxation (T1) and dephasing (T2) time in the NV center when scanning a nanoparticle over it, we are able to extract the nanoparticles diameter and distance from the NV center using an Ornstein-Uhlenbeck model for the nanoparticles fluctuations. This scanning probe technique can be used in the future to characterize different spin label substitutes for both medical applications and basic magnetic nanoparticle behavior.",

author = "Dominik Schmid-Lorch and Thomas Haeberle and Friedemann Reinhard and Andrea Zappe and Michael Slota and Lapo Bogani and Amit Finkler and Joerg Wrachtrup",

note = "The authors acknowledge support from EU via ERC grant SQUTEC and integrated projects DIADEMS and SIQS; DARPA (QuASAR); the DFG via research group 1493, SFB/TR21, and SPP 1601; and contract research of the Baden-W{\"u}rttemberg foundation. The authors thank K. Karrai for helpful discussions on operating the attoCSFM device and J. Greiner for the theoretical and mathematical support. The authors also thank I. Platzman from the Max Planck Institute for Intelligent Systems for his assistance in acquiring SEM images. A.F. acknowledges support from the Alexander von Humboldt Foundation.",

year = "2015",

month = aug,

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doi = "10.1021/acs.nanolett.5b00679",

language = "الإنجليزيّة",

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pages = "4942--4947",

journal = "Nano Letters",

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T1 - Relaxometry and Dephasing Imaging of Superparamagnetic Magnetite Nanoparticles Using a Single Qubit

AU - Schmid-Lorch, Dominik

AU - Haeberle, Thomas

AU - Reinhard, Friedemann

AU - Zappe, Andrea

AU - Slota, Michael

AU - Bogani, Lapo

AU - Finkler, Amit

AU - Wrachtrup, Joerg

N1 - The authors acknowledge support from EU via ERC grant SQUTEC and integrated projects DIADEMS and SIQS; DARPA (QuASAR); the DFG via research group 1493, SFB/TR21, and SPP 1601; and contract research of the Baden-Württemberg foundation. The authors thank K. Karrai for helpful discussions on operating the attoCSFM device and J. Greiner for the theoretical and mathematical support. The authors also thank I. Platzman from the Max Planck Institute for Intelligent Systems for his assistance in acquiring SEM images. A.F. acknowledges support from the Alexander von Humboldt Foundation.

PY - 2015/8/12

Y1 - 2015/8/12

N2 - To study the magnetic dynamics of superparamagnetic nanoparticles, we use scanning probe relaxometry and dephasing of the nitrogen vacancy (NV) center in diamond, characterizing the spin noise of a single 10 nm magnetite particle. Additionally, we show the anisotropy of the NV sensitivitys dependence on the applied decoherence measurement method. By comparing the change in relaxation (T1) and dephasing (T2) time in the NV center when scanning a nanoparticle over it, we are able to extract the nanoparticles diameter and distance from the NV center using an Ornstein-Uhlenbeck model for the nanoparticles fluctuations. This scanning probe technique can be used in the future to characterize different spin label substitutes for both medical applications and basic magnetic nanoparticle behavior.

AB - To study the magnetic dynamics of superparamagnetic nanoparticles, we use scanning probe relaxometry and dephasing of the nitrogen vacancy (NV) center in diamond, characterizing the spin noise of a single 10 nm magnetite particle. Additionally, we show the anisotropy of the NV sensitivitys dependence on the applied decoherence measurement method. By comparing the change in relaxation (T1) and dephasing (T2) time in the NV center when scanning a nanoparticle over it, we are able to extract the nanoparticles diameter and distance from the NV center using an Ornstein-Uhlenbeck model for the nanoparticles fluctuations. This scanning probe technique can be used in the future to characterize different spin label substitutes for both medical applications and basic magnetic nanoparticle behavior.

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U2 - 10.1021/acs.nanolett.5b00679

DO - 10.1021/acs.nanolett.5b00679

M3 - مقالة

SN - 1530-6984

VL - 15

SP - 4942

EP - 4947

JO - Nano Letters

JF - Nano Letters

IS - 8

ER -

Relaxometry and Dephasing Imaging of Superparamagnetic Magnetite Nanoparticles Using a Single Qubit

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