Observation of Brownian Relaxation of Magnetic Nanoparticles using HTS SQUID
Journal article, 2017

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 mu L sample at a concentration of 1 mg/mL and field of 7.5 nT was 20 m Phi(0). 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.

SQUID

immunoassay

magnetic

Physics

magnetometry

high-temperature superconducting films

Author

O. V. Snigirev

Moscow State University

, II Soloviev

Moscow State University

Alexei Kalaboukhov

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Maxim Chukharkin Leonidovich

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Moscow University Physics Bulletin (English Translation of Vestnik Moskovskogo Universiteta, Fizika)

0027-1349 (ISSN)

Vol. 72 1 95-100

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Subject Categories

Analytical Chemistry

DOI

10.3103/s0027134917010143

More information

Latest update

6/12/2018