Observation of Brownian relaxation of magnetic nanoparticles using HTS SQUID


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Resumo

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.

Sobre autores

O. Snigirev

Department of Semiconductor Physics, Faculty of Physics

Autor responsável pela correspondência
Email: oleg.snigirev@phys.msu.ru
Rússia, Moscow, 119991

I. Soloviev

Skobeltsyn Institute of Nuclear Physics

Email: oleg.snigirev@phys.msu.ru
Rússia, Moscow, 119991

A. Kalabukhov

Skobeltsyn Institute of Nuclear Physics; Chalmers University of Technology

Email: oleg.snigirev@phys.msu.ru
Rússia, Moscow, 119991; Kemivagen 9, Gothenburg, SE 412 96

M. Chukharkin

Chalmers University of Technology

Email: oleg.snigirev@phys.msu.ru
Suécia, Kemivagen 9, Gothenburg, SE 412 96

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1. JATS XML

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