Interface interaction of transition metal phthalocyanines with strontium titanate (100)

• Reimer Karstens,
• Thomas Chassé and
• Heiko Peisert

Beilstein J. Nanotechnol. 2021, 12, 485–496, doi:10.3762/bjnano.12.39

• treatments [12][13] or water leaching [14][15]. The SrO termination is often achieved via thermal Sr segregation [16][17][18] or by deposition of SrO in vacuo [19][20]. Due to the thermal Sr segregation effect, sputtering and annealing procedures result commonly in SrO-terminated surfaces [21]. The detailed

Magnetic segregation effect in liquid crystals doped with carbon nanotubes

• Danil A. Petrov,
• Pavel K. Skokov,
• Alexander N. Zakhlevnykh and
• Dmitriy V. Makarov

Beilstein J. Nanotechnol. 2019, 10, 1464–1474, doi:10.3762/bjnano.10.145

• tricritical behavior is related to the redistribution of the carbon nanotubes (segregation effect) inside the layer. Keywords: carbon nanotubes; liquid crystal; magnetic field; orientational transitions; segregation effect; Introduction Composites of liquid crystals (LCs) and nanoparticles are actively

• physics of ferronematics and ferrocholesterics (magnetic suspensions of ferromagnetic nanoparticles in LCs) is called the magnetic segregation effect [12]. It has a significant influence on the type of orientation transitions in LC composite materials [40][41][42][43][44], and, as predicted in [39], must

• orientational structure of the NLC director, there is an increase in the concentration of CNTs in the center of the layer due to the segregation effect (see Figure 3c). When κ < κ*, the Fréedericksz transition in suspension is a first-order transition, which corresponds to the vertical segments of curves 1 in

Magnetic field induced orientational transitions in liquid crystals doped with carbon nanotubes

• Danil A. Petrov,
• Pavel K. Skokov and
• Alexander N. Zakhlevnykh

Beilstein J. Nanotechnol. 2017, 8, 2807–2817, doi:10.3762/bjnano.8.280

• planar type when the nanotubes are oriented along the matrix director, and the homeotropic type when the nanotubes are perpendicular to the director). The possibility of a redistribution of the nanotube concentration (segregation effect) is shown. The fields of orientational transitions between uniform

• contributions F1 and F5 in the volume density of the free energy (Equation 1), which allows us to introduce the dimensionless segregation parameter . For , the segregation effect is negligible because the characteristic scale of the segregation region of CNTs considerably exceeds the thickness of the layer; for

• κ ≤ 1, the segregation effect becomes significant. We take typical values for NLCs [36] to estimate dimensionless quantities: χa ≈ 10−6 and K33 > K11 ≈ 10−12 N. For CNTs we can assume [7][8][9][10][11]: ≈ 10−5 to 10−4, d ≈ 10−8 m, CNT length l ≈ 10−6 m and ν ≈ 10−22 m−3. We also set T = 300 K and L

Self-organization of mesoscopic silver wires by electrochemical deposition

• Sheng Zhong,
• Thomas Koch,
• Stefan Walheim,
• Harald Rösner,
• Eberhard Nold,
• Aaron Kobler,
• Torsten Scherer,
• Di Wang,
• Christian Kübel,
• Mu Wang,
• Horst Hahn and
• Thomas Schimmel

Beilstein J. Nanotechnol. 2014, 5, 1285–1290, doi:10.3762/bjnano.5.142

• below the freezing point of the electrolyte. Due to the segregation effect, AgNO3 is partially expelled from the ice of the electrolyte during solidification [32]. As a consequence, the concentration of aqueous AgNO3 electrolyte in the deposition cell increases. When equilibrium is reached, a thin layer

• . The concentration of electrolyte is higher than the initial concentration due to the segregation effect. (b) Applying a constant voltage across the two electrodes let the silver grow from the cathode into the electrolyte. (c) Cooling is stopped and the temperature rises after deposition. After melting

Sublattice asymmetry of impurity doping in graphene: A review

• James A. Lawlor and
• Mauro S. Ferreira

Beilstein J. Nanotechnol. 2014, 5, 1210–1217, doi:10.3762/bjnano.5.133

• segregation effect It is clear that any degree of asymmetry between the two equivalent sublattices is the result of a symmetry breaking operation. Current theoretical attempts to explain the sublattice asymmetry in the nitrogen doping seen in the experiments discussed in the previous section suggest that the