Specific absorption rate of randomly oriented magnetic nanoparticles in a static magnetic field

• Ruslan A. Rytov and
• Nikolai A. Usov

Beilstein J. Nanotechnol. 2023, 14, 485–493, doi:10.3762/bjnano.14.39

• magnetic field in the presence of a dc field were carried out in [15][16][17][18][19][20][21]. In particular, the behavior of assemblies of nanoparticles distributed in a viscous liquid was considered in [18][19][20][21]. However, nanoparticles in a liquid show a more complex behavior because of the

Heating ability of elongated magnetic nanoparticles

• Elizaveta M. Gubanova,
• Nikolai A. Usov and
• Vladimir A. Oleinikov

Beilstein J. Nanotechnol. 2021, 12, 1404–1412, doi:10.3762/bjnano.12.104

• assembly is possible both in vitro and in vivo. Let us assume that the axes of symmetry of spheroidal nanoparticles are oriented in a viscous liquid under the action of a strong permanent external magnetic field. Evidently, the orientation of the long particle axes can be fixed by increasing significantly

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

• ; viscous liquid; Introduction Magnetic nanoparticles are promising materials in various areas of biomedicine [1][2][3][4], such as magnetic resonance imaging [5][6][7], targeted drug delivery [8][9][10], and magnetic hyperthermia [11][12][13][14][15][16][17][18][19][20]. Iron oxide nanoparticles are most

• moments of the particle. However, if nanoparticles remain distributed in biological fluids (blood, serum), the intensity of AMF energy absorption is determined also by the rotation of the nanoparticles as a whole in a viscous liquid [25][26]. Various mathematical approaches are necessary for a theoretical

Heating ability of magnetic nanoparticles with cubic and combined anisotropy

• Nikolai A. Usov,
• Mikhail S. Nesmeyanov,
• Elizaveta M. Gubanova and
• Natalia B. Epshtein

Beilstein J. Nanotechnol. 2019, 10, 305–314, doi:10.3762/bjnano.10.29

• recently stressed [10] that in most of the experiments [7][8][11][12] the SAR measurements were performed for assemblies of nanoparticles distributed in a viscous liquid, although the ultimate goal of the investigations related to magnetic hyperthermia is to study the heating ability of magnetic

• distributed in a viscous liquid, i.e., under the conditions far from that of magnetic hyperthermia. Instead, in this paper, we show that for assemblies of magnetite nanoparticles with cubic or combined magnetic anisotropy with optimal choice of nanoparticle size and nonmagnetic shell thickness one can obtain

Imidazolium-based ionic liquids used as additives in the nanolubrication of silicon surfaces

• Patrícia M. Amorim,
• Ana M. Ferraria,
• Rogério Colaço,
• Luís C. Branco and
• Benilde Saramago

Beilstein J. Nanotechnol. 2017, 8, 1961–1971, doi:10.3762/bjnano.8.197

• days. The pure product was obtained as a brown viscous liquid (8.4g, 78%). 1H NMR (DMSO-d6, 400 MHz) δ 3.87 (s, 3H), 4.84 (d, J = 4.00 Hz, 2H), 5.33 (m, 2H), 6.04 (m, 1H), 7.70 (d, J = 4.00 Hz, 2H), 9.09 ppm (s, 1H); 19F NMR (DMSO-d6, 282 MHz) δ −77.99, −77.62 ppm; FTIR (KBr) : 518.86, 575.30, 642.20

Fabrication of hierarchically porous TiO₂ nanofibers by microemulsion electrospinning and their application as anode material for lithium-ion batteries

• Jin Zhang,
• Yibing Cai,
• Xuebin Hou,
• Xiaofei Song,
• Pengfei Lv,
• Huimin Zhou and
• Qufu Wei

Beilstein J. Nanotechnol. 2017, 8, 1297–1306, doi:10.3762/bjnano.8.131

• successfully. During the process of electrospinning, the viscous liquid was elongated quickly accompanied by the evaporation of solvent as well as the hydrolysis condensation of TBT. Herein, despite the fact that the oil droplets in the microemulsion were stable with a diameter of about 20 nm, several small

First examples of organosilica-based ionogels: synthesis and electrochemical behavior

• Andreas Taubert,
• Ruben Löbbicke,
• Barbara Kirchner and
• Fabrice Leroux

Beilstein J. Nanotechnol. 2017, 8, 736–751, doi:10.3762/bjnano.8.77

• (ii) efficient stabilization of the (highly viscous) liquid phase over extended periods of time. As a result, [BmimSO3H][PTS] is a viable candidate for use in membranes, especially when considering the simple, near quantitative synthesis (Figure 7) and the high thermal stability of the IL (Figure 10

Photocatalysis applications of some hybrid polymeric composites incorporating TiO₂ nanoparticles and their combinations with SiO₂/Fe₂O₃

• Andreea Laura Chibac,
• Tinca Buruiana,
• Violeta Melinte and
• Emil C. Buruiana

Beilstein J. Nanotechnol. 2017, 8, 272–286, doi:10.3762/bjnano.8.30

• progress was verified through FTIR spectroscopy following the absorption of the isocyanate stretching band at 2260 cm−1 until its disappearance from the spectrum. After the evaporation of the solvent, the urethane dimethacrylate PTHF-UDMA (Figure 13) was collected as colourless viscous liquid (η = 4.46

Synthesis of hydrophobic photoluminescent carbon nanodots by using L-tyrosine and citric acid through a thermal oxidation route

• Venkatesh Gude

Beilstein J. Nanotechnol. 2014, 5, 1513–1522, doi:10.3762/bjnano.5.164

• of gases and the formation of a dark-brown colored viscous liquid were observed, which indicated that the formation of CNDs is taking place through the formation of amide bonds [20]. The cooling of the reaction mixture after 30 min of reaction resulted in a dark brown solid product, which was