Two-step single-reactor synthesis of oleic acid- or undecylenic acid-stabilized magnetic nanoparticles by thermal decomposition

• Mykhailo Nahorniak,
• Pamela Pasetto,
• Jean-Marc Greneche,
• Volodymyr Samaryk,
• Sandy Auguste,
• Anthony Rousseau,
• Nataliya Nosova and
• Serhii Varvarenko

Beilstein J. Nanotechnol. 2023, 14, 11–22, doi:10.3762/bjnano.14.2

• purchased from Merck KGaA (Darmstadt, Germany). Oleic acid (OA, 98%) was bought from Lachema (Brno, Czech Republic). For magnetic separation, a permanent cylindrical neodymium magnet (NdFeB; 45 × 15 mm), with an induction on the surface of 1.2 T, was used. To characterize the size, morphology, hydrodynamic

Wet-spinning of magneto-responsive helical chitosan microfibers

• Dorothea Brüggemann,
• Johanna Michel,
• Naiana Suter,
• Matheus Grande de Aguiar and
• Michael Maas

Beilstein J. Nanotechnol. 2020, 11, 991–999, doi:10.3762/bjnano.11.83

• fibers could be easily attracted to and reversibly stretched by a permanent neodymium magnet (Figure 5 and Supporting Information File 2). Based on what has already been established in terms of biocompatibility of chitosan–IOP blends [39], the fibers generated in this study are therefore highly

• neodymium magnet (see Supporting Information File 2 for the full video). Scheme of the wet-spinning process that generated helical microfibers. A solution of chitosan and magnetic iron oxide nanoparticles was extruded into an ethanol coagulation bath. The emerging fibers were collected by a teflon-coated

• chitosan fiber. Magnetic manipulation of a wet-spun helical chitosan fiber with embedded IOPs using a neodymium magnet. Funding The authors thank the MAPEX initiative at the University of Bremen for financial support. D.B. and N.S. gratefully acknowledge funding by the Emmy Noether program of the German

Contactless photomagnetoelectric investigations of 2D semiconductors

• Marian Nowak,
• Marcin Jesionek,
• Barbara Solecka,
• Piotr Szperlich,
• Piotr Duka and
• Anna Starczewska

Beilstein J. Nanotechnol. 2018, 9, 2741–2749, doi:10.3762/bjnano.9.256

• alternating current, induced a measurable voltage in the suitably placed coil. In our experiments, the samples were placed in a slit between neodymium magnets and a measuring coil. The graphene was illuminated through a 2 mm diameter hole in one of the magnets using a temperature-stabilized laser diode, Sanyo

Influence of the preparation method on the photocatalytic activity of Nd-modified TiO₂

• Patrycja Parnicka,
• Paweł Mazierski,
• Tomasz Grzyb,
• Wojciech Lisowski,
• Ewa Kowalska,
• Bunsho Ohtani,
• Adriana Zaleska-Medynska and
• Joanna Nadolna

Beilstein J. Nanotechnol. 2018, 9, 447–459, doi:10.3762/bjnano.9.43

• light-induced degradation of the model pollutant in aqueous solution. Keywords: heterogeneous photocatalysis; hydrothermal method; modified TiO2; neodymium; sol–hydrothermal method; Introduction Heterogeneous photocatalysis based on titanium dioxide (TiO2) has become the focus of numerous studies due

• , due to the 4f electron structure, can act as conversion luminescent media [14][16][17][18]. Neodymium (Nd3+) ions are well known as one of the more interesting lanthanides due to unique electronic and optical properties [19][20]. Several reports suggested that the transformation of light from near

• photocatalytic activity of Nd-modified TiO2 NPs preparated by the sol–hydrothermal method is still lacking in the literature. In view of this, in the present study, we proposed to combine the effects of synthesis route and neodymium modification to improve the photocatalytic activity of TiO2 under visible light

Dry adhesives from carbon nanofibers grown in an open ethanol flame

• Christian Lutz,
• Julia Syurik,
• C. N. Shyam Kumar,
• Christian Kübel,
• Michael Bruns and
• Hendrik Hölscher

Beilstein J. Nanotechnol. 2017, 8, 2719–2728, doi:10.3762/bjnano.8.271

• permanent magnet with a calculated magnetic flux of 506 mT at the magnet surface was built-in by stacking five cylindrical neodymium magnets (Maqna, Otom Group GmbH, Grade 45, 3 mm thick, 25 mm in diameter). The distance between magnet and sample was 3 mm yielding a magnetic flux of about 387 mT at the

Synthesis and catalytic application of magnetic Co–Cu nanowires

• Lijuan Sun,
• Xiaoyu Li,
• Zhiqiang Xu,
• Kenan Xie and
• Li Liao

Beilstein J. Nanotechnol. 2017, 8, 1769–1773, doi:10.3762/bjnano.8.178

• ). H3NBH3 was supplied from Aladdin (Shanghai, China). Deionized water was used in all aqueous solutions. The following reactions took place between two parallel neodymium magnets (60 × 30 × 10 mm3) separated 150 mm apart. The magnetic intensity inside the reaction solution was approximately 40 mT as

• . Additionally, 0.015 g of CuSO4·5H2O (the starting molar ratio was Co/Cu 10:1) was dissolved in the glass beaker with continued stirring. Finally, after about 5 min, the product was separated from the reaction mixture by neodymium magnets. Similarly, the product of bimetallic Co–Cu nanowires was rinsed three

Laser processing of thin-film multilayer structures: comparison between a 3D thermal model and experimental results

• Babak B. Naghshine and
• Amirkianoosh Kiani

Beilstein J. Nanotechnol. 2017, 8, 1749–1759, doi:10.3762/bjnano.8.176

• coating and were directly used for laser processing. Laser processing of thin-film structures All the specimens were processed by an neodymium-doped yttrium aluminum garnet (Nd:YAG) nanosecond laser system (Bright Solutions SOL-20). Frequency and power can be directly controlled by changing the level of

Multiwalled carbon nanotube hybrids as MRI contrast agents

• Nikodem Kuźnik and
• Mateusz M. Tomczyk

Beilstein J. Nanotechnol. 2016, 7, 1086–1103, doi:10.3762/bjnano.7.102

• according to their magnetic moment (and the content of iron), so the researchers were able to separate mechanically the most iron-enriched hybrids from the rest of the product. Another example comes from Lamanna's research, where enhanced uptake of CNTs by PC3 tumor cells directly above a neodymium magnet

Self-assembly mechanism of Ni nanowires prepared with an external magnetic field

• Xiaoyu Li,
• Hu Wang,
• Kenan Xie,
• Qin Long,
• Xuefei Lai and
• Li Liao

Beilstein J. Nanotechnol. 2015, 6, 2123–2128, doi:10.3762/bjnano.6.217

• , nickel nanowires cannot be formed if the diameter of the nickel nanoparticles does not reach a critical size. Experimental All chemicals were of analytical grade without further purification. All reaction solutions were located between two parallel neodymium magnets (60 × 30 mm2) separated 150 mm apart