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Observation of Brownian relaxation of magnetic nanoparticles using HTS SQUID

  • Biophysics and Medical Physics
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Moscow University Physics Bulletin Aims and scope

Abstract

We analyzed the sensitivity of a separationless immunoassay scheme using functionalized magnetic nanoparticles (MNPs) and a sensitive HTS SQUID magnetometer. The signal of a 100 μL sample at a concentration of 1 mg/mL and field of 7.5 nT was 20 mΦ0. This makes it possible for the sensitivity to be within the range of 50 ng/mL at the required time of up to 100 s per a point in the frequency spectrum.

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Authors and Affiliations

  1. Department of Semiconductor Physics, Faculty of Physics, Moscow State University, Moscow, 119991, Russia

    O. V. Snigirev

  2. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119991, Russia

    I. I. Soloviev & A. S. Kalabukhov

  3. Chalmers University of Technology, Gothenburg, Kemivagen 9, SE 412 96, Sweden

    A. S. Kalabukhov & M. L. Chukharkin

Authors
  1. O. V. Snigirev
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  2. I. I. Soloviev
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  3. A. S. Kalabukhov
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  4. M. L. Chukharkin
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Corresponding author

Correspondence to O. V. Snigirev.

Additional information

Original Russian Text © O.V. Snigirev, I.I. Soloviev, A.S. Kalabukhov, M.L. Chukharkin, 2017, published in Vestnik Moskovskogo Universiteta, Seriya 3: Fizika, Astronomiya, 2017, No. 1, pp. 94–99.

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Snigirev, O.V., Soloviev, I.I., Kalabukhov, A.S. et al. Observation of Brownian relaxation of magnetic nanoparticles using HTS SQUID. Moscow Univ. Phys. 72, 95–100 (2017). https://doi.org/10.3103/S0027134917010143

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  • DOI: https://doi.org/10.3103/S0027134917010143

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