Superconducting spin valve effect in Co/Pb/Co heterostructures with insulating interlayers

• Andrey A. Kamashev,
• Nadir N. Garif’yanov,
• Aidar A. Validov,
• Vladislav Kataev,
• Alexander S. Osin,
• Yakov V. Fominov and
• Ilgiz A. Garifullin

Beilstein J. Nanotechnol. 2024, 15, 457–464, doi:10.3762/bjnano.15.41

• interfaces could be magnetically active [52], which would introduce additional degrees of freedom into the system (in particular, the interfaces could then behave nontrivially under the action of a rotating magnetic field). Further experiments with better control of the insulating interfaces are clearly

Recent progress in actuation technologies of micro/nanorobots

• Ke Xu and
• Bing Liu

Beilstein J. Nanotechnol. 2021, 12, 756–765, doi:10.3762/bjnano.12.59

• MNP concentrations (1%, 3%, and 5%) under a rotating magnetic field. Each dot represents the average velocity for five different ISMEs with hexagram shapes ± standard error of the mean (s.e.m.). (d) a) Images of the ISME with encapsulated MNPs during folding in response to a pH change. Scale bar: 500

Recent progress in magnetic applications for micro- and nanorobots

• Ke Xu,
• Shuang Xu and
• Fanan Wei

Beilstein J. Nanotechnol. 2021, 12, 744–755, doi:10.3762/bjnano.12.58

• -dimensional Helmholtz coil control system was used to form a rotating magnetic field in three dimensions. A change in the direction of the magnetic field exerted a magnetic moment to steer the magnetic structure. Compared with the traditional straight helical structure for MNRs [28], the conical helical

• processes of MNPs are adopted to fabricate MNRs [37]. A rotating magnetic field was often used to break particle chains into shorter fragments. As the magnetic field changes, the particle chain will be broken and re-formed. While disassembling the paramagnetic nanoparticle chains of MNRs, it is necessary to

• constructed of MOFs proposed by Yang et al. [78] was powered by enzymes, in which MOF crystals use H2O2 as fuel to achieve bubble propulsion. A rotating magnetic field generated by the MagDisk was applied to drive the FMSM. The translational motion direction of the FMSM was determined by the yaw angle. The

Dynamics of superparamagnetic nanoparticles in viscous liquids in rotating magnetic fields

• Nikolai A. Usov,
• Ruslan A. Rytov and
• Vasiliy A. Bautin

Beilstein J. Nanotechnol. 2019, 10, 2294–2303, doi:10.3762/bjnano.10.221

• .10.221 Abstract The dynamics of magnetic nanoparticles in a viscous liquid in a rotating magnetic field has been studied by means of numerical simulations and analytical calculations. In the magneto-dynamics approximation three different modes of motion of the unit magnetization vector and particle

• director are distinguished depending on frequency and amplitude of the rotating magnetic field. The specific absorption rate of a dilute assembly of superparamagnetic nanoparticles in rotating magnetic field is calculated by solving the Landau–Lifshitz stochastic equation for the unit magnetization vector

• and the stochastic equation for the particle director. At elevated frequencies an optimal range of particle diameters is found where the specific absorption rate of an assembly in a rotating magnetic field has a maximum. It is shown that with an optimal choice of the particle sizes sufficiently large