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

• full spin valve effect. A shift of the superconducting transition temperature Tc by switching the mutual orientation of the magnetizations of the two ferromagnetic Co layers from antiparallel to parallel amounted to ΔTc = 0.2 K at the optimal thickness of the superconducting Pb layer. Our findings

• structure based on the control of the average exchange field acting on the S layer by changing the mutual orientation of the magnetization vectors of the F layers and, thus, suppressing superconductivity to a different degree. Typically, the superconducting transition temperature Tc of the SSV is minimal

• . Several experimental works confirmed the predicted influence of the mutual orientation of the magnetization vectors of the F layers on Tc in the F1/S/F2 type of structures [4][5][6][23][24][25]. However, a full switching between the normal and the superconducting state was not achieved because in these

Unveiling the nature of atomic defects in graphene on a metal surface

• Karl Rothe,
• Nicolas Néel and
• Jörg Kröger

Beilstein J. Nanotechnol. 2024, 15, 416–425, doi:10.3762/bjnano.15.37

• laterally larger and deeper depression than type 2 (≈23%, Figure 1c). Moreover, type-1 defects occur nearly exclusively (≈100%) at valley sites of the moiré lattice. The hcp and fcc stacking of the valley sites defines the orientation of the triangular shape of the defect, pointing in opposite directions at

Classification and application of metal-based nanoantioxidants in medicine and healthcare

• Nguyen Nhat Nam,
• Nguyen Khoi Song Tran,
• Tan Tai Nguyen,
• Nguyen Ngoc Trai,
• Nguyen Phuong Thuy,
• Hoang Dang Khoa Do,
• Nhu Hoa Thi Tran and
• Kieu The Loan Trinh

Beilstein J. Nanotechnol. 2024, 15, 396–415, doi:10.3762/bjnano.15.36

• ]. Figure 2 shows the property of ceria nanoplates with multi-antioxidant activities and the relationship between lattice thickness, Ce3+ concentration, and the resulting strain in ceria with specific surface orientation (100) [32]. Similarly, a large number of different metal-based nanomaterials have been

• thickness, Ce3+ concentration, and the resulting strain in ceria with specific surface orientation (100). Figure 2 was adapted with permission from [32]. Copyright 2023 American Chemical Society. This content is not subject to CC BY 4.0. (a) Percent injected dose (%ID) in blood of EaNA and Cy5-labeled human

Investigating ripple pattern formation and damage profiles in Si and Ge induced by 100 keV Ar⁺ ion beam: a comparative study

• Indra Sulania,
• Harpreet Sondhi,
• Tanuj Kumar,
• Sunil Ojha,
• G R Umapathy,
• Ambuj Mishra,
• Ambuj Tripathi,
• Richa Krishna,
• Devesh Kumar Avasthi and
• Yogendra Kumar Mishra

Beilstein J. Nanotechnol. 2024, 15, 367–375, doi:10.3762/bjnano.15.33

• wavelength ranging from 400 to 740 nm (Figure 1B). The ripple patterns are more pronounced and have a preferential orientation perpendicular to the ion beam direction (shown by an arrow on each of the AFM images). The wavelength of the ripples obtained for initial fluences was ≈430 nm, and became wider (≈740

• attributed to the accumulation of defects produced by Ar irradiation. The RBS-c spectra recorded for Si and Ge single-crystal samples pre-damaged with 100 keV Ar+ ions at RT are presented in Figure 5A and Figure 5B, respectively. The RBS spectrum recorded for the pristine sample in random orientation

Determining by Raman spectroscopy the average thickness and N-layer-specific surface coverages of MoS₂ thin films with domains much smaller than the laser spot size

• Felipe Wasem Klein,
• Jean-Roch Huntzinger,
• Vincent Astié,
• Damien Voiry,
• Romain Parret,
• Houssine Makhlouf,
• Sandrine Juillaguet,
• Jean-Manuel Decams,
• Sylvie Contreras,
• Périne Landois,
• Ahmed-Azmi Zahab,
• Jean-Louis Sauvajol and
• Matthieu Paillet

Beilstein J. Nanotechnol. 2024, 15, 279–296, doi:10.3762/bjnano.15.26

• reference, which is a bare Si(111) wafer with only native oxide. In the following, A(Si111) stands for the integrated intensity of the Si(111) 521 cm−1 mode. This reference is preferred to the Si(100) substrate with 90 ± 6 nm SiO2 to avoid the effects of the SiO2 thickness variations and crystal orientation

• ratio, it is of great practical advantage to use the same silicon (the silicon below the oxide, which is Si(100) in the present work) in the measurement of A2D(Si) and A0(Si). A necessary precaution is that the Si(100) substrate orientation has to be kept the same for both measurements. Another

• problems with this approach. The first is the dependence of the Si signal on the crystal orientation and the SiO2 thickness. The second relates to the fact that using this ratio, rather than using each measurand independently and contrasting them, even if more practical, can hide some information. Finally

Design, fabrication, and characterization of kinetic-inductive force sensors for scanning probe applications

• August K. Roos,
• Ermes Scarano,
• Elisabet K. Arvidsson,
• Erik Holmgren and
• David B. Haviland

Beilstein J. Nanotechnol. 2024, 15, 242–255, doi:10.3762/bjnano.15.23

• using a wet-etch in potassium hydroxide (KOH). The wet-etch has a high selectivity between silicon and silicon nitride, and KOH etches silicon with different rates in the ⟨100⟩ and ⟨111⟩ crystalline directions. With proper orientation of the cantilever mask to the crystalline axes of the wafer, one can

Multiscale modelling of biomolecular corona formation on metallic surfaces

• Parinaz Mosaddeghi Amini,
• Ian Rouse,
• Julia Subbotina and
• Vladimir Lobaskin

Beilstein J. Nanotechnol. 2024, 15, 215–229, doi:10.3762/bjnano.15.21

• based on their energy of adsorption and orientation. We employ a three-level multiscale method (as shown in Figure 3) to calculate the energies of adsorption and the content of the corona for these proteins on the selected surfaces. In the section “Results and Discussion”, we provide a detailed

• orientation of each individual protein, a primary coarse-graining step was performed. In this part, we use the UA model to predict the protein–NP binding energies. This model takes into account various factors, such as the material’s chemical composition, size, shape, surface roughness, charge

• expressed in a pairwise additive manner: The potential Up−NP depends on the distance di between the centers of mass of the NP and each AA in the protein. This distance is determined by the protein’s orientation with respect to the NP’s surface, which is defined by two rotational angles (ϕ, θ) relative to

Ferromagnetic resonance spectra of linear magnetosome chains

• Elizaveta M. Gubanova and
• Nikolai A. Usov

Beilstein J. Nanotechnol. 2024, 15, 157–167, doi:10.3762/bjnano.15.15

• chain, the distance between the centers of neighboring particles, the mutual orientation of the cubic axes of particle anisotropy, and the value of the magnetic damping constant is studied. It is shown that FMR spectra of non-oriented chain assemblies depend on the average particle diameter at a fixed

• chain, that is, about the particle diameters, the number of particles in the chain, the characteristic distance between the particle centers, and the mutual orientation of the particle cubic anisotropy axes, is completely lost. In addition, in the approach [22][23][24][25], only the position of the

• are calculated depending on the direction of the external magnetizing field with respect to the common axis of the chains; the FMR spectra of randomly oriented assemblies were obtained by the corresponding angle averaging. Various types of mutual orientation of cubic easy anisotropy axes of the chain

In situ optical sub-wavelength thickness control of porous anodic aluminum oxide

• Aleksandrs Dutovs,
• Raimonds Popļausks,
• Oskars Putāns,
• Vladislavs Perkanuks,
• Aušrinė Jurkevičiūtė,
• Tomas Tamulevičius,
• Uldis Malinovskis,
• Iryna Olyshevets,
• Donats Erts and
• Juris Prikulis

Beilstein J. Nanotechnol. 2024, 15, 126–133, doi:10.3762/bjnano.15.12

• heating, electrolyte flow [19], arrangement of the electrodes, and crystallographic orientation of the aluminum substrate [20]. In this work, we continuously recorded the reflectance spectra from a PAAO-coated aluminum surface during anodization. In a similar reflective interference spectroscopy (RIfS

• can result in tens of nanometers PAAO thickness variation due to different anodization reaction rates on surfaces with different crystallographic orientation [20][23]. Additionally, it is known, that anodization of aluminum substrates with (100) surface orientation result in better pore ordering in

Study of the reusability and stability of nylon nanofibres as an antibody immobilisation surface

• Inés Peraile,
• Matilde Gil-García,
• Laura González-López,
• Nushin A. Dabbagh-Escalante,
• Juan C. Cabria-Ramos and
• Paloma Lorenzo-Lozano

Beilstein J. Nanotechnol. 2024, 15, 83–94, doi:10.3762/bjnano.15.8

• the biosensor surface, in terms of density, orientation, and stability, will determine the diagnosis capability of the device [11]. Thus, the immobilisation surface of the device is one of the key points in the development of new sensors. Nylon has been used as immobilisation surface in numerous

Berberine-loaded polylactic acid nanofiber scaffold as a drug delivery system: The relationship between chemical characteristics, drug-release behavior, and antibacterial efficiency

• Le Thi Le,
• Hue Thi Nguyen,
• Liem Thanh Nguyen,
• Huy Quang Tran and
• Thuy Thi Thu Nguyen

Beilstein J. Nanotechnol. 2024, 15, 71–82, doi:10.3762/bjnano.15.7

• study reported that BBR exhibited excellent antibacterial activity against MRSA by damaging the cell wall structure and membrane integrity and further changing the cell morphology in the concentration range of 64–256 mg/L [44]. Recently, Wu et al. [45] proposed a novel orientation on the antibacterial

TEM sample preparation of lithographically patterned permalloy nanostructures on silicon nitride membranes

• Joshua Williams,
• Michael I. Faley,
• Joseph Vimal Vas,
• Peng-Han Lu and
• Rafal E. Dunin-Borkowski

Beilstein J. Nanotechnol. 2024, 15, 1–12, doi:10.3762/bjnano.15.1

• project, a TEM substrate with nine free-standing SiN membranes was used as a hard mask. We lay an identical substrate flat on the mask in a flip-chip configuration. The mask is aligned so that all nine windows are on top of each other, and the asymmetrically broken windows serve as an orientation aid

• a 54.7° slope with respect to the etched surface on the sidewalls. Because of the (010) edge orientation of Si substrates, etching occurs faster in diagonal directions of the substrates, resulting in sharp edges on the structure (Figure 11b). Magnetic measurements Setup All TEM magnetic measurements

Hierarchically patterned polyurethane microgrooves featuring nanopillars or nanoholes for neurite elongation and alignment

• Lester Uy Vinzons,
• Guo-Chung Dong and
• Shu-Ping Lin

Beilstein J. Nanotechnol. 2023, 14, 1157–1168, doi:10.3762/bjnano.14.96

• compartments, such as the nucleus, filopodia, and focal adhesions, resulting in the modulation of signal cascades that leads to changes in cell proliferation, attachment, orientation, and differentiation, among others [2]. In nerve tissue engineering, the implant micro- and nanotopography serve as physical

• ), indicating dominance of the nanostructure properties in this direction. In contrast, the CA values were higher and remained quite close to each other in magnitude even after O2 plasma treatment, signifying the dominance of the microgroove properties in this orientation. Despite the relatively high CA

A multi-resistance wide-range calibration sample for conductive probe atomic force microscopy measurements

• François Piquemal,
• Khaled Kaja,
• Pascal Chrétien,
• José Morán-Meza,
• Frédéric Houzé,
• Christian Ulysse and
• Abdelmounaim Harouri

Beilstein J. Nanotechnol. 2023, 14, 1141–1148, doi:10.3762/bjnano.14.94

• ambient air. A DC bias voltage of 1 V was applied to the sample, while the scanning speed was set to 12 µm·s−1 and the scan orientation was parallel to the cantilever’s central axis. The resistance map in Figure 2 was acquired over the central zone of the sample, showing 15 electrode arms corresponding to

• -AFM measurements in scanning mode. To extract quantitative values comparable to those listed in Table 1, the surface of each electrode was individually imaged at different locations using the same operating parameters, that is, scan speed, scan orientation, applied force, and bias voltage. A histogram

Density functional theory study of Au-fcc/Ge and Au-hcp/Ge interfaces

• Olga Sikora,
• Małgorzata Sternik,
• Benedykt R. Jany,
• Franciszek Krok,
• Przemysław Piekarz and
• Andrzej M. Oleś

Beilstein J. Nanotechnol. 2023, 14, 1093–1105, doi:10.3762/bjnano.14.90

• results show that the Au-fcc borders the Ge(001) surface, whereas a preferred hcp crystal orientation is when the Au(010) plane, or Au() in the Miller–Bravais notation, is parallel to the Ge(111) plane. An atomistic model of the planar interface between Au-fcc and Ge(001) was also proposed. First

• Au lattice constants and three Ge blocks (the resulting mismatch is about 4%). To get benchmark results for this orientation of crystal planes, we consider two different mutual positions of the slabs presented in Figure 6a and Figure 6b. In variant A, rows of gold atoms are placed between the rows of

• interface shown in Figure 6d. In order to match the experimental picture, we need a different orientation of the germanium building blocks (rotation by 90° with respect to variant C). Due to incommensurate Au–Au and Ge–Ge distances, it is impossible to find a regular pattern of Au–Ge bonds in the resulting

Exploring internal structures and properties of terpolymer fibers via real-space characterizations

• Michael R. Roenbeck and
• Kenneth E. Strawhecker

Beilstein J. Nanotechnol. 2023, 14, 1004–1017, doi:10.3762/bjnano.14.83

• crystallites, as random sequences of molecules including the DPE monomer (which locally changes chain orientation) would prevent neighboring molecules from forming cohesive extended crystals. This would lead to a mixture of ordered and disordered subdomains with varying alignment, as schematized in Figure 9

• aligned with the fiber axis with significant fibril branching, junctions, and weaving in and out of the exposed surface. Combining topography maps with stiffness maps, we find that locally elevated regions exhibit higher stiffness, regardless of scanning direction, orientation with the fiber axis, or the

Antibody-conjugated nanoparticles for target-specific drug delivery of chemotherapeutics

• Mamta Kumari,
• Amitabha Acharya and
• Praveen Thaggikuppe Krishnamurthy

Beilstein J. Nanotechnol. 2023, 14, 912–926, doi:10.3762/bjnano.14.75

• the removal of linkers and catalytic agents, which results in low yield and poor reproducibility, and the random orientation of antibodies on the NP surfaces, resulting in a low accessibility of antigen binding sites [62]. Binding by adapter molecules Non-covalent conjugation via adapter molecules

Two-dimensional molecular networks at the solid/liquid interface and the role of alkyl chains in their building blocks

• Suyi Liu,
• Yasuo Norikane and
• Yoshihiro Kikkawa

Beilstein J. Nanotechnol. 2023, 14, 872–892, doi:10.3762/bjnano.14.72

• the molecular arrangement and orientation. Among the non-covalent interactions, dispersion interactions that derive from alkyl chain units are believed to be weak. However, alkyl chains play an important role in the adsorption onto substrates, as well as in the in-plane intermolecular interactions. In

• and in real time [38][39][40][41][42]. In the 2D assemblies at the solid/liquid interface, non-covalent interactions play an essential role in the molecular orientation and arrangement. Among the intermolecular interactions, directional and relatively strong interactions, such as hydrogen bonding

• aromatic units. Generally, dispersion forces are interpreted as non-directional interactions. However, the interaction between HOPG and alkyl chains causes directional orientation because of the epitaxy defined by the threefold symmetric axis of the HOPG lattice, that is, alkyl chains align along the HOPG

Ultralow-energy amorphization of contaminated silicon samples investigated by molecular dynamics

• Grégoire R. N. Defoort-Levkov,
• Alan Bahm and
• Patrick Philipp

Beilstein J. Nanotechnol. 2023, 14, 834–849, doi:10.3762/bjnano.14.68

• surface. The velocity vector of the Ar atoms is always parallel to the [010] direction, and it will vary with respect to the [100] direction. For an optimal visualization of the sample structure, most of the images are taken facing the (110) orientation since the lattice is more easily understood using

The microstrain-accompanied structural phase transition from h-MoO₃ to α-MoO₃ investigated by in situ X-ray diffraction

• Zeqian Zhang,
• Honglong Shi,
• Boxiang Zhuang,
• Minting Luo and
• Zhenfei Hu

Beilstein J. Nanotechnol. 2023, 14, 692–700, doi:10.3762/bjnano.14.55

• pattern.) The intensity of the measured (100) peak is obviously weaker than that of the standard peak, but the height of the (210) peak is noticeably stronger. This indicates the presence of a strong preferred orientation in the sample, although it has been properly powdered. When the temperature was

• properties [17][22]. Considering the correlation between the oxygen atomic position and the preferred orientation of the sample, here, we measured the diameter of the octahedra tunnel, which is approximately equivalent to the spacing of diagonally opposite Mo atoms, as illustrated in Figure 5c, rather than

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• with it and lowering its effectiveness [39][40][41]. The shift of the fluorescence spectrum to longer wavelengths with respect to the excitation spectrum is called the Stokes shift. Fluorescence relaxation processes are all spin-neutral (spin-allowed), and the electron’s spin orientation is always

• (acceptor) within 10 nm in a non-radiative manner. In general, the degree of overlap between the fluorophore’s fluorescence emission spectrum and the analyte’s absorption spectrum, the relative orientation of the fluorophore and analyte dipoles, and the distance between them affect the rate of energy

Thermal transport in kinked nanowires through simulation

• Alexander N. Robillard,
• Graham W. Gibson and
• Ralf Meyer

Beilstein J. Nanotechnol. 2023, 14, 586–602, doi:10.3762/bjnano.14.49

• detailed look is taken at the nature of heat flux within said systems. The effects of the kink angle are found to be complex, influenced by multiple factors including crystal orientation, details of transport modelling, and the ratio of mean free path to characteristic system lengths. The effect of varying

• to thermal transport, as well as a phonon Monte Carlo (PMC) simulation [26][27][28][29]. MD results will additionally be investigated for effects of lattice orientation in the wires and compared to a simple theoretical investigation of the LoS in these wires. The MD and PMC results cover different

• solutions of the heat equation serves to better bridge the gap between heat transport phenomena at the macro- and the microscale and shows that multiple factors are significant in kinked systems beyond disruption of ballistic paths, including lattice orientation and phonon reflections. Results and

SERS performance of GaN/Ag substrates fabricated by Ag coating of GaN platforms

• Magdalena A. Zając,
• Bogusław Budner,
• Malwina Liszewska,
• Bartosz Bartosewicz,
• Łukasz Gutowski,
• Jan L. Weyher and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 552–564, doi:10.3762/bjnano.14.46

• relative to the axis of the pillars. The observed effect can be associated with the initial orientation of GaN pillars to the plasma plume (Figure 1); pillars are under some angle to the plasma plume. This effect is similar to the one observed during the growth of thin metal films in oblique angle

The origin of black and white coloration of the Asian tiger mosquito Aedes albopictus (Diptera: Culicidae)

• Manuela Rebora,
• Gianandrea Salerno,
• Silvana Piersanti,
• Alexander Kovalev and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 496–508, doi:10.3762/bjnano.14.41

• the tarsus orientation. The optical appearance of the scale system of Ae. albopictus has a complex nature and can be explained by the combination of several effects. Among them, multiple refraction and reflection on the micro- and nanostructures of the scales are mainly responsible for the white

• nanostructures of the scales on the tarsi of Ae. albopictus appears bright and is angle-dependent since the reflected light changes according to the angle detection and according to the tarsus orientation (from the proximal direction, from the distal direction, and perpendicular to the tarsus main axis). Optical

• reflection from a single scale. The variation in the scale orientation at the level of one scale and between neighbouring scales is responsible for the strong small-angle scattering and for the absence of the prominent specular reflection. The scales are tilted with respect to the surface and directed

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

• presence of both magnetic and mechanical degrees of freedom of the particles [17][22][23]. Meanwhile, in a biological environment, the rotation of magnetic nanoparticles as a whole under the action of ac magnetic field is strongly hindered [24], so that the spatial orientation of nanoparticles in

• in a sufficiently strong dc field is absent, since magnetization reversal of nanoparticles is impossible. Hdc is perpendicular to Hac Let us now consider the case of perpendicular orientation of the external dc and the ac magnetic fields. The dc magnetic field changes in this case in the range Hdc

• above, a dc magnetic field is capable of both suppressing and increasing the SAR of an assembly, depending on the magnitude and relative orientation of the ac and dc magnetic fields, while the characteristic diameter of the magnetic nanoparticles is also important. In this section, as an example of a