Molecular dynamics modeling of the influence forming process parameters on the structure and morphology of a superconducting spin valve

• Alexander Vakhrushev,
• Aleksey Fedotov,
• Vladimir Boian,
• Roman Morari and
• Anatolie Sidorenko

Beilstein J. Nanotechnol. 2020, 11, 1776–1788, doi:10.3762/bjnano.11.160

• coordination number and are characterized by a denser packing of atoms. The described regions arise in sufficiently thick films mainly near cobalt layers. The initial metal crystal lattice mismatch causes mutual rearrangements of atoms and structure transformation inside the material. The next series of

• thickened niobium layer, crystallization zones are observed where direct contact with the cobalt nanolayer occurs. The crystal lattice mismatch of the starting metals causes mutual rearrangements of atoms and the structure transformation inside the nanosystem. It was also found that a decrease in the area

Out-of-plane surface patterning by subsurface processing of polymer substrates with focused ion beams

• Serguei Chiriaev,
• Luciana Tavares,
• Vadzim Adashkevich,
• Arkadiusz J. Goszczak and
• Horst-Günter Rubahn

Beilstein J. Nanotechnol. 2020, 11, 1693–1703, doi:10.3762/bjnano.11.151

• transformation and volume shrinkage of PMMA under ion irradiation have been reported in several publications [6][7][9][10][11][12][13]. PC is the second most sold thermoplastic polymer. It is extensively used in microtechnology due to its excellent optical, mechanical, and chemical properties [14]. Compared to

• cutting a piece of the PDMS polymer from a bulk sample. In contrast, the irradiation of a pristine PDMS surface of this sample resulted in material compacting. The authors explained that this difference was due to mechanical stress in the cut surface. Other important aspects of the transformation of the

Oxidation of Au/Ag films by oxygen plasma: phase separation and generation of nanoporosity

• Abdel-Aziz El Mel,
• Said A. Mansour,
• Mujaheed Pasha,
• Atef Zekri,
• Janarthanan Ponraj,
• Akshath Shetty and
• Yousef Haik

Beilstein J. Nanotechnol. 2020, 11, 1608–1614, doi:10.3762/bjnano.11.143

• the low earth orbit (LEO) [1][2][3][4][5][6][7][8][9]. Silver degradation related to this phenomenon was attributed to the strong chemical reaction between silver and atomic oxygen present in the LEO resulting in the transformation of the metallic silver into highly stressed and nanoporous silver

• residual stress. The repeated oxidation and cracking events result in the transformation of the metallic silver into nanoporous silver oxide when it reaches the surface of the film. In parallel to the oxidation reaction, silver keeps diffusing from the alloy film toward the surface, feeding the metallic

• oxidation process. This phase separation led to the transformation of the Au/Ag alloy film into a gold-enriched nanoporous film. Based on the experimental results a mechanism was proposed to explain the entire oxidation process of Au/Ag alloy films by oxygen plasma, involving silver oxidation by atomic

Atomic defect classification of the H–Si(100) surface through multi-mode scanning probe microscopy

• Jeremiah Croshaw,
• Thomas Dienel,
• Taleana Huff and
• Robert Wolkow

Beilstein J. Nanotechnol. 2020, 11, 1346–1360, doi:10.3762/bjnano.11.119

• defect which remains in the subsequent empty states images (compare Figure 5c,f,i to the first scans in Figure 5a,d,g). Importantly, we observe the complete absence of a charged species after the transformation and a replacement with the neutral point defect. The change in contrast of the AFM image of

Magnetohydrodynamic stagnation point on a Casson nanofluid flow over a radially stretching sheet

• Ganji Narender,
• Kamatam Govardhan and
• Gobburu Sreedhar Sarma

Beilstein J. Nanotechnol. 2020, 11, 1303–1315, doi:10.3762/bjnano.11.114

• written as The transformed boundary conditions are and the dimensionless parameters are defined as The formulas for the dimensional form of the skin-friction coefficient Cf, the Nusselt number Nu, and Sherwood number Sh, are given by and the formulas for τw, qw, and qm are The result of the transformation

Magnetic-field-assisted synthesis of anisotropic iron oxide particles: Effect of pH

• Andrey V. Shibaev,
• Petr V. Shvets,
• Darya E. Kessel,
• Roman A. Kamyshinsky,
• Anton S. Orekhov,
• Sergey S. Abramchuk,
• Alexei R. Khokhlov and
• Olga E. Philippova

Beilstein J. Nanotechnol. 2020, 11, 1230–1241, doi:10.3762/bjnano.11.107

• transformation into magnetite. The reaction pathway was strongly dependent on R and also on the rate in which the base was added. At the same time, the effect of pH on the templated directional synthesis of iron oxide as well as the formation of nanorods within this context are yet to be determined. In this work

Gas sorption porosimetry for the evaluation of hard carbons as anodes for Li- and Na-ion batteries

• Yuko Matsukawa,
• Fabian Linsenmann,
• Maximilian A. Plass,
• George Hasegawa,
• Katsuro Hayashi and
• Tim-Patrick Fellinger

Beilstein J. Nanotechnol. 2020, 11, 1217–1229, doi:10.3762/bjnano.11.106

• weight of Na), the lower volumetric energy density (because of the need for the less dense disordered carbons), as well as the more complicated storage mechanism complicate the commercialization SIBs. With the current strong interest in electromotive driving and the transformation of the energy grid to

Revealing the local crystallinity of single silicon core–shell nanowires using tip-enhanced Raman spectroscopy

• Marius van den Berg,
• Ardeshir Moeinian,
• Arne Kobald,
• Yu-Ting Chen,
• Anke Horneber,
• Steffen Strehle,
• Alfred J. Meixner and
• Dai Zhang

Beilstein J. Nanotechnol. 2020, 11, 1147–1156, doi:10.3762/bjnano.11.99

• oriented crystalline grains. b) The fast Fourier transformation image of the indicated area in panel a. c) TEM image showing a migrated metal particle on a SiNW. d) TEM image of a Pt-catalyzed core–shell SiNW showing the morphology of the junction between SiNW core and shell. e) Pt silicide catalyst and

Excitonic and electronic transitions in Me–Sb₂Se₃ structures

• Nicolae N. Syrbu,
• Victor V. Zalamai,
• Ivan G. Stamov and
• Stepan I. Beril

Beilstein J. Nanotechnol. 2020, 11, 1045–1053, doi:10.3762/bjnano.11.89

• ) Transformation from the tetrahedral to orthorhombic symmetry due to the spin–orbit interaction and the crystal field in the center of the Brillouin zone. Figure 7B adapted with permission from [24], copyright 2020 Elsevier. The reflection spectra of the Sb2Se3 crystals measured at room temperature under Е||с and

Band tail state related photoluminescence and photoresponse of ZnMgO solid solution nanostructured films

• Vadim Morari,
• Aida Pantazi,
• Nicolai Curmei,
• Vitalie Postolache,
• Emil V. Rusu,
• Marius Enachescu,
• Ion M. Tiginyanu and
• Veaceslav V. Ursaki

Beilstein J. Nanotechnol. 2020, 11, 899–910, doi:10.3762/bjnano.11.75

• unavoidable in the structure transformation process, in a certain interval of Mg concentrations. The phase segregation process was investigated in detail by means of X-ray diffraction, element-specific near-edge X-ray absorption fine structure (NEXAFS), electron dispersive spectroscopy (EDS), atomic force

Effect of Ag loading position on the photocatalytic performance of TiO₂ nanocolumn arrays

• Jinghan Xu,
• Yanqi Liu and
• Yan Zhao

Beilstein J. Nanotechnol. 2020, 11, 717–728, doi:10.3762/bjnano.11.59

• addition, since the chemical transformation of MB molecules occurs at the Ag–TiO2 interface, Ag is more easily oxidized, which damages the long-term stability of the Ag–TiO2 heterojunctions [46]. Taken together, these factors can explain the difference of catalytic efficiency between AFT and ACT

Stochastic excitation for high-resolution atomic force acoustic microscopy imaging: a system theory approach

• Edgar Cruz Valeriano,
• José Juan Gervacio Arciniega,
• Christian Iván Enriquez Flores,
• Susana Meraz Dávila,
• Joel Moreno Palmerin,
• Martín Adelaido Hernández Landaverde,
• Yuri Lizbeth Chipatecua Godoy,
• Aime Margarita Gutiérrez Peralta,
• Rafael Ramírez Bon and
• José Martín Yañez Limón

Beilstein J. Nanotechnol. 2020, 11, 703–716, doi:10.3762/bjnano.11.58

• experiment to show the capabilities of this technique. First, the geometrical parameters for the experimental cantilever must be known because the resonance frequency transformation into the indentation modulus requires these values. For this purpose, a resonance frequency spectrum was acquired for a free

• these contact resonance frequencies. It is important to notice that a set of resonance frequencies can provide a unique value for contact stiffness according to Equation 27 in a quantitative way. For this purpose, a mapping transformation from resonance frequencies to contact stiffness was obtained

Exfoliation in a low boiling point solvent and electrochemical applications of MoO₃

• Matangi Sricharan,
• Bikesh Gupta,
• Sreejesh Moolayadukkam and
• H. S. S. Ramakrishna Matte

Beilstein J. Nanotechnol. 2020, 11, 662–670, doi:10.3762/bjnano.11.52

• boiling point solvent 2-butanone using probe sonication, resulted in a concentration of 0.57 mg·mL−1 and a yield of 5.7%, which are the highest values reported to date. Additionally, the MoO3 dispersions in 2-butanone do not undergo any chemical transformation when exposed to sunlight. Composites of the

Examination of the relationship between viscoelastic properties and the invasion of ovarian cancer cells by atomic force microscopy

• Mengdan Chen,
• Jinshu Zeng,
• Weiwei Ruan,
• Zhenghong Zhang,
• Yuhua Wang,
• Shusen Xie,
• Zhengchao Wang and
• Hongqin Yang

Beilstein J. Nanotechnol. 2020, 11, 568–582, doi:10.3762/bjnano.11.45

• light on the biomechanical changes for early diagnosis of tumor transformation and progression at single-cell level. Keywords: atomic force microscopy (AFM); cancer invasion; cancer migration; ovarian cancer cells; viscoelasticity; Introduction Ovarian cancer is a lethal gynecological malignancy with

• of cancer and the change of mechanical properties of the cells has been discovered in the last decades [4][5]. Mechanical properties used to determine the tumorigenic and metastatic potential of cells are strongly associated with cell transformation, migration and invasion [6]. Therefore, diseased

• microfilament skeleton [16]. Therefore, the rearrangement of microfilament skeleton is crucial for cell motility and contributes largely to elasticity changes of the cells, when the cytoskeleton structure changes from a more organized to a disordered form with the transformation from benign to malignant [17][18

Multilayer capsules made of weak polyelectrolytes: a review on the preparation, functionalization and applications in drug delivery

• Varsha Sharma and
• Anandhakumar Sundaramurthy

Beilstein J. Nanotechnol. 2020, 11, 508–532, doi:10.3762/bjnano.11.41

• or a redox initiated approach. The most studied is the azide-alkyne cycloaddition reaction due to the high regioselectivity and quantitative transformation with no side reactions. The detailed description of these methods can be found in a recent review by Such et al. [90]. The first application in

Evolution of Ag nanostructures created from thin films: UV–vis absorption and its theoretical predictions

• Robert Kozioł,
• Marcin Łapiński,
• Paweł Syty,
• Damian Koszelow,
• Wojciech Sadowski,
• Józef E. Sienkiewicz and
• Barbara Kościelska

Beilstein J. Nanotechnol. 2020, 11, 494–507, doi:10.3762/bjnano.11.40

• pulse duration was set to 2.5 fs, thus it contained all frequencies within the visible light range. This allowed for the use of discrete Fourier transformation for switching from the time domain to the frequency domain and calculating the spectral response of the sample. Also, the Mie theory [18] was

Brome mosaic virus-like particles as siRNA nanocarriers for biomedical purposes

• Alfredo Nuñez-Rivera,
• Pierrick G. J. Fournier,
• Danna L. Arellano,
• Ana G. Rodriguez-Hernandez,
• Rafael Vazquez-Duhalt and
• Ruben D. Cadena-Nava

Beilstein J. Nanotechnol. 2020, 11, 372–382, doi:10.3762/bjnano.11.28

• (Figure 4C), corroborating the cargo release from BMV VLP inside tumor cells and gene silencing. BMV VLPs as siAkt1 nanocarriers The anti-cancer siRNA Akt1 (siAkt1) was also encapsidated in BVM-VLPs (Figure 4B). Akt1 is a kinase involved in the processes of cell proliferation, migration and transformation

An advanced structural characterization of templated meso-macroporous carbon monoliths by small- and wide-angle scattering techniques

• Felix M. Badaczewski,
• Marc O. Loeh,
• Torben Pfaff,
• Dirk Wallacher,
• Daniel Clemens and
• Bernd M. Smarsly

Beilstein J. Nanotechnol. 2020, 11, 310–322, doi:10.3762/bjnano.11.23

• nanometer-sized voids. For the pitch-based porous carbon the average pore size is ca. 7 nm, corresponding well to Ar physisorption analysis. Since SANS probes accessible and inaccessible voids, all mesopores are thus accessible. The pitch precursor exhibits a phase transformation during carbonization at

Facile biogenic fabrication of hydroxyapatite nanorods using cuttlefish bone and their bactericidal and biocompatibility study

• Satheeshkumar Balu,
• Manisha Vidyavathy Sundaradoss,
• Swetha Andra and
• Jaison Jeevanandam

Beilstein J. Nanotechnol. 2020, 11, 285–295, doi:10.3762/bjnano.11.21

• from 583 to 689 °C for CB due to the decomposition of CaCO3, however no weight loss was observed for CB-Hap nanorods due to their thermal stability [33]. Herradi et al. (2017) suggested that a temperature above 750 °C is not suitable for Hap powder fabrication as a phase transformation is observed from

• characterization methods to confirm the physicochemical properties of the cuttlefish bone-derived nanorods. The XRD data revealed the mechanism behind the transformation of aragonite to calcite and then to Hap NRs of 20.86 nm to be related to crystallite size. The average length and width of the nanorods was

Fabrication of Ag-modified hollow titania spheres via controlled silver diffusion in Ag–TiO₂ core–shell nanostructures

• Bartosz Bartosewicz,
• Malwina Liszewska,
• Bogusław Budner,
• Marta Michalska-Domańska,
• Krzysztof Kopczyński and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2020, 11, 141–146, doi:10.3762/bjnano.11.12

• its thermal transformation, i.e., disappearing Ag cores and newly formed Ag nanoparticles. In the first image (Figure 1, bottom left) the Ag core is clearly visible as a bright circle. Upon thermal transformation, the Ag core becomes smaller and, depending on the initial CSNs and the annealing time

• , it will take on different shapes (Figure 1, bottom centre). It must be stated here that transformation does not occur identically in all CSNs in the given samples, as can be seen in Figure 2, and resulting optical properties will be a sum of the properties of all particles in the sample. If CSNs are

• to several changes occurring in the nanostructure morphology. Any interactions affecting the optical properties of these CSNs occurred only between a single silver core and the titania shell. Based on the proposed mechanism, the annealing gradually led to a transformation of the single and relatively

Molecular architectonics of DNA for functional nanoarchitectures

• Debasis Ghosh,
• Lakshmi P. Datta and
• Thimmaiah Govindaraju

Beilstein J. Nanotechnol. 2020, 11, 124–140, doi:10.3762/bjnano.11.11

• tiles were separated by a helical turn, which triggered the switchable motion of the device through B-to-Z-form transition, and the relative changes in position and transformation were monitored by the fluorescence resonance energy transfer (FRET) technique. Zhao and co-workers reported the design and

• SFM (BNA) from the BNAn–dTn hybrid ensemble to form a metallo-DNA duplex of homothymidine sequences, and this transformation was used as a chiroptical and conductometric sensor platform for the ultrasensitive detection of mercury at a subnanomolar level (vide supra) [20][72]. The remarkable outcome of

Frontiers in pharmaceutical nanotechnology

• Matthias G. Wacker

Beilstein J. Nanotechnol. 2019, 10, 2538–2540, doi:10.3762/bjnano.10.244

• was proclaimed to revolutionize medicine, but what we are seeing at present is a slow transformation rather than a revolutionary overthrow. Now more than ever, the potential for clinical translation will be in the spotlight. In many areas, nanotechnology is already accepted, for example, in the

Formation of metal/semiconductor Cu–Si composite nanostructures

• Natalya V. Yumozhapova,
• Andrey V. Nomoev,
• Vyacheslav V. Syzrantsev and
• Erzhena C. Khartaeva

Beilstein J. Nanotechnol. 2019, 10, 2497–2504, doi:10.3762/bjnano.10.240

• the nanocluster structure at different time points. Furthermore, it shows a gradual modification of the homogeneous distribution of atoms in the melt into a Janus-like structure. The first reason for such a transformation is the large thickness of the silicon shell at 50 atom % content of both

Mobility of charge carriers in self-assembled monolayers

• Zhihua Fu,
• Tatjana Ladnorg,
• Hartmut Gliemann,
• Alexander Welle,
• Asif Bashir,
• Michael Rohwerder,
• Qiang Zhang,
• Björn Schüpbach,
• Andreas Terfort and
• Christof Wöll

Beilstein J. Nanotechnol. 2019, 10, 2449–2458, doi:10.3762/bjnano.10.235

• minutes to complete the deprotonation, 10 g of 2-bromoanthracene [26] (39 mmol) and 1.36 g of Pd(dppf)Cl2 (1.9 mmol) were added and the mixture heated for 5 min. The reaction was allowed to proceed at room temperature for an additional hour (complete transformation was detected by GC–MS), before an

pH-Controlled fluorescence switching in water-dispersed polymer brushes grafted to modified boron nitride nanotubes for cellular imaging

• Saban Kalay,
• Yurij Stetsyshyn,
• Volodymyr Donchak,
• Khrystyna Harhay,
• Ostap Lishchynskyi,
• Halyna Ohar,
• Yuriy Panchenko,
• Stanislav Voronov and
• Mustafa Çulha

Beilstein J. Nanotechnol. 2019, 10, 2428–2439, doi:10.3762/bjnano.10.233

• the fluorescent properties is rather weak in this system. The crucial role in pH-controlled switching of fluoresce belongs to the transformation of the fluorescein monoacrylate units from cationic form to neutral, and especially anionic forms. The conformation of the poly(acrylic acid) chain at acidic