Calibration of piezo actuators and systems by dynamic interferometry

• Knarik Khachatryan and
• Michael Reichling

Beilstein J. Nanotechnol. 2025, 16, 2086–2091, doi:10.3762/bjnano.16.143

• and hysteresis occurring after switching polarity from positive to negative. Note that we observe this phenomenon although we paused the measurement for 25 min between contraction and extension experiments to give the system time for equilibration. The deviation of data points from a straight line is

Programmable soliton dynamics in all-Josephson-junction logic cells and networks

• Vsevolod I. Ruzhickiy,
• Anastasia A. Maksimovskaya,
• Sergey V. Bakurskiy,
• Andrey E. Schegolev,
• Maxim V. Tereshonok,
• Mikhail Yu. Kupriyanov,
• Nikolay V. Klenov and
• Igor I. Soloviev

Beilstein J. Nanotechnol. 2025, 16, 1883–1893, doi:10.3762/bjnano.16.131

• , Russia 10.3762/bjnano.16.131 Abstract We demonstrate the programmable control of kinetic soliton dynamics in all-Josephson-junction (all-JJ) networks through a novel tunable cell design. This cell enables on-demand switching of transmission lines and operates across defined parameter regimes supporting

• suitable for complex computational tasks. As a direct application of the KICK’s switching capabilities, we first propose the three-input, three-output routing network illustrated in Figure 4a. The proposed architecture is based on a grid where each path depicted is itself a complete all-JJTL. The routing

Self-assembly and adhesive properties of Pollicipes pollicipes barnacle cement protein cp19k: influence of pH and ionic strength

• Shrutika Sawant,
• Anne Marie Power and
• J. Gerard Wall

Beilstein J. Nanotechnol. 2025, 16, 1863–1872, doi:10.3762/bjnano.16.129

• under low pH/low salt concentration conditions, while pre-formed fibrils retained their adhesion ability upon switching to a high pH/high salt concentration environment, which was designed to mimic the change in the protein environment upon secretion in vivo. These findings support the hypothesis that

• rPolcp19k-his protein to (a) hydrophilic and (b) hydrophobic polystyrene surfaces in the presence of (I.) pH 4.0, 150 mM NaCl; (II.) pH 8.0, 600 mM NaCl; and (III.) pH 8.0, 0 mM NaCl. 21 days + pH switch: rPolcp19k-his incubated in pH 4.0, 150 mM NaCl for 21 days, followed by switching to pH 8.0, 600 mM

Few-photon microwave fields for superconducting transmon-based qudit control

• Irina A. Solovykh,
• Andrey V. Pashchenko,
• Natalya A. Maleeva,
• Nikolay V. Klenov,
• Olga V. Tikhonova and
• Igor I. Soloviev

Beilstein J. Nanotechnol. 2025, 16, 1580–1591, doi:10.3762/bjnano.16.112

• algorithms. A promising solution to this problem is to expand the computational basis of an element by switching to qutrits (n = 3), ququarts (n = 4), and so on [7][8][9][10][11][12]. We believe that an additional synergistic effect can be achieved by using quantum electromagnetic fields with a comparable

• efficient state control of the qudit will be possible for low-energy levels, n = 1–3. Switching between effectively populated states is carried out when an external magnetic flux Φext is applied to the interferometer, taking into account the condition (Figure 6). The tuning of the plasma frequency is

Automated collection and categorisation of STM images and STS spectra with and without machine learning

• Dylan Stewart Barker and
• Adam Sweetman

Beilstein J. Nanotechnol. 2025, 16, 1367–1379, doi:10.3762/bjnano.16.99

• addition to the lack of data, ML models require careful labelling and a high level of knowledge from the labeller to be able to train such a model. Switching to a new substrate system is likely to require retraining of the model, and furthermore, even after a successful training, it is still often unclear

• each molecule located, using the same range of −1.5 V to 1.5 V as for the bare surface. Note on SnPc switching instability The adsorption of SnPc on coinage metal substrates is well studied, and the molecule is known to undergo an irreversible switch from the SnUp to the SnDown state on the Ag(111

• bias range used did not reach −1.9 V. With moderate negative bias (e.g., −1.5 V) a switch would commonly occur, and even with parameter adjustments to reduce the probability of switching (i.e. reduced integration times), there was still a chance that the switch would be induced, as can be seen in

Deep-learning recognition and tracking of individual nanotubes in low-contrast microscopy videos

• Vladimir Pimonov,
• Said Tahir and
• Vincent Jourdain

Beilstein J. Nanotechnol. 2025, 16, 1316–1324, doi:10.3762/bjnano.16.96

• growth kinetics, revealing complex behaviors such as intermittent switching between growth, pause, and etching modes, even under nominally constant synthesis conditions [20]. These observations, further supported by complementary Raman spectroscopy, served as a foundation for the development of a new

Crystalline and amorphous structure selectivity of ignoble high-entropy alloy nanoparticles during laser ablation in organic liquids is set by pulse duration

• Robert Stuckert,
• Felix Pohl,
• Oleg Prymak,
• Ulrich Schürmann,
• Christoph Rehbock,
• Lorenz Kienle and
• Stephan Barcikowski

Beilstein J. Nanotechnol. 2025, 16, 1141–1159, doi:10.3762/bjnano.16.84

Soft materials nanoarchitectonics: liquid crystals, polymers, gels, biomaterials, and others

• Katsuhiko Ariga

Beilstein J. Nanotechnol. 2025, 16, 1025–1067, doi:10.3762/bjnano.16.77

• substantial molecular amplification, the surface is occasionally designated a “command surface” or “command layer”. Furthermore, other dynamic optical functions are being investigated, including photomechanical motion utilizing block copolymer monolayers, morphological switching, photoinduced mass transfer

• on/off response of the fabricated structures is length-dependent. For example, the switching current under light illumination increases with increasing molecular length and monolayer thickness. Furthermore, the technique has the potential to be automated, which would facilitate its use as an assembly

Efficiency of single-pulse laser fragmentation of organic nutraceutical dispersions in a circular jet flow-through reactor

• Tina Friedenauer,
• Maximilian Spellauge,
• Alexander Sommereyns,
• Verena Labenski,
• Tuba Esatbeyoglu,
• Christoph Rehbock,
• Heinz P. Huber and
• Stephan Barcikowski

Beilstein J. Nanotechnol. 2025, 16, 711–727, doi:10.3762/bjnano.16.55

• increased tenfold to 0.1 wt %, the value decreased to 0.8 nmol·cm−2, mainly driven by the overall tenfold reduction of degradation when switching to a higher particle mass concentration. Based on these findings it may be concluded that for surface area generation at minimized degradation, a higher curcumin

Nanostructured materials characterized by scanning photoelectron spectromicroscopy

• Matteo Amati,
• Alexey S. Shkvarin,
• Alexander I. Merentsov,
• Alexander N. Titov,
• María Taeño,
• David Maestre,
• Sarah R. McKibbin,
• Zygmunt Milosz,
• Ana Cremades,
• Rainer Timm and
• Luca Gregoratti

Beilstein J. Nanotechnol. 2025, 16, 700–710, doi:10.3762/bjnano.16.54

• with trimethylindium and phosphine precursors. Axial p–n junctions were created by switching from diethylzinc to hydrogen sulfide as dopant precursors halfway during nanowire growth. More growth details can be found in references [18][30]. After growth, nanowires were mechanically transferred onto

Synthetic-polymer-assisted antisense oligonucleotide delivery: targeted approaches for precision disease treatment

• Ana Cubillo Alvarez,
• Dylan Maguire and
• Ruairí P. Brannigan

Beilstein J. Nanotechnol. 2025, 16, 435–463, doi:10.3762/bjnano.16.34

• can restore or disrupt reading frames as well as alter protein transcription levels [36]. For example, splice switching ASOs (ssASOs) have been proven to efficiently mask polyadenylation signals [37] and hamper intron excision on pre-mRNA [38]. This prevents the formation of mature mRNA, causing a

• intact after RNase treatment. In addition, the εPLL-modified GNPs exhibited high gene-silencing activity in HeLa-Luc cells, indicating efficient delivery of ASOs and other splice switching oligonucleotides, such as anti-microRNAs and DNAzymes, into the cells. The following year, Le Vay et al. designed a

• PMO conjugate containing linolenic acid with three double bonds (LenA) exhibited enhanced cellular internalisation while maintaining high cell viability on various cell lines, leading to the highest splice switching activity (Figure 8). Poly(propylene imine). Since pioneering research by Vögtle and

Preferential enrichment and extraction of laser-synthesized nanoparticles in organic phases

• Theo Fromme,
• Maximilian L. Spiekermann,
• Florian Lehmann,
• Stephan Barcikowski,
• Thomas Seidensticker and
• Sven Reichenberger

Beilstein J. Nanotechnol. 2025, 16, 254–263, doi:10.3762/bjnano.16.20

• -octanol and 1-nonanol provided the highest phase selectivity, showing either a maximum (for copper) or minimum (for iron) amount of metal nanoparticles in the phases. However, the system seems not to be in full equilibrium after the ablation process as repeated switching between the mono- and biphasic

Nanocarriers and macrophage interaction: from a potential hurdle to an alternative therapeutic strategy

• Naths Grazia Sukubo,
• Paolo Bigini and
• Annalisa Morelli

Beilstein J. Nanotechnol. 2025, 16, 97–118, doi:10.3762/bjnano.16.10

• inflammation and tissue damage in RA models [75]. Beyond cytokines, mRNA therapies have targeted macrophage-specific markers to induce phenotype switching. Polyethylenimine NPs grafted with mannose ligands have been used to deliver genes encoding CD163, a hallmark of M2 macrophages. This system successfully

Lithium niobate on insulator: an emerging nanophotonic crystal for optimized light control

• Midhun Murali,
• Amit Banerjee and
• Tanmoy Basu

Beilstein J. Nanotechnol. 2024, 15, 1415–1426, doi:10.3762/bjnano.15.114

• switching through the electro-optic effect [28]. The LNOI enables low-loss waveguides, efficient photon pair sources, and fast low-voltage switches for the successful implementation of quantum circuits [29]. There have been advancements in the successful realization of fabrication methods of LN integration

• lower input power levels. This, in turn, leads to lower switching thresholds, a critical requirement for efficient all-optical switching. The mode confinement observed in 1D photonic crystals significantly enhances nonlinear optical effects. Conversely, high-frequency modes concentrate in low-index

Green synthesis of carbon dot structures from Rheum Ribes and Schottky diode fabrication

• Muhammed Taha Durmus and
• Ebru Bozkurt

Beilstein J. Nanotechnol. 2024, 15, 1369–1375, doi:10.3762/bjnano.15.110

• switching speed and low forward voltage [14]. In this study, CDs were synthesized in a single step by hydrothermal synthesis using Rheum Ribes, a natural material, for the first time, and diodes were fabricated using the new CDs. To our knowledge, studies on diodes with CDs obtained from natural materials

Hymenoptera and biomimetic surfaces: insights and innovations

• Vinicius Marques Lopez,
• Carlo Polidori and
• Rhainer Guillermo Ferreira

Beilstein J. Nanotechnol. 2024, 15, 1333–1352, doi:10.3762/bjnano.15.107

• by numerous branched internal fibers [129]. Moreover, the pads in Hymenoptera exhibit self-cleaning capabilities [130]. The precise control of adhesive strength and contact area can inspire the development of new bioinspired surfaces that significantly reduce switching times between attachment and

The role of a tantalum interlayer in enhancing the properties of Fe₃O₄ thin films

• Hai Dang Ngo,
• Vo Doan Thanh Truong,
• Van Qui Le,
• Hoai Phuong Pham and
• Thi Kim Hang Pham

Beilstein J. Nanotechnol. 2024, 15, 1253–1259, doi:10.3762/bjnano.15.101

• study of analog resistive switching of Fe3O4-based cross-cell memristive devices [7][8][9][10]. Fe3O4 thin films can be grown by many processes, including molecular beam epitaxy, which is employed for depositing single crystal films, and pulsed laser deposition, which is utilized to achieve epitaxial

Beyond biomimicry – next generation applications of bioinspired adhesives from microfluidics to composites

• Dan Sameoto

Beilstein J. Nanotechnol. 2024, 15, 965–976, doi:10.3762/bjnano.15.79

• 2010 with the advent of the modern soft robotics field. Traditional stiffness-switching mechanisms include phase change materials [39], jamming actuators [40], electrorheological fluids [41], and antagonistic actuators [42], but vacuum jamming has been the most popular in academic literature [43

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

• insulating interlayers. The main specific feature of these structures is the intentional oxidation of both superconductor/ferromagnet (S/F) interfaces. We study the variation of the critical temperature of our systems due to switching between parallel and antiparallel configurations of the magnetizations of

• 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

• . 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

Modulated critical currents of spin-transfer torque-induced resistance changes in NiCu/Cu multilayered nanowires

• Mengqi Fu,
• Roman Hartmann,
• Julian Braun,
• Sergej Andreev,
• Torsten Pietsch and
• Elke Scheer

Beilstein J. Nanotechnol. 2024, 15, 360–366, doi:10.3762/bjnano.15.32

• controlled sequence along the long axis of the nanowires. Both magnetic switching and excitation phenomena driven by spin-polarized currents were clearly demonstrated in our NiCu/Cu multilayered nanowires. Moreover, the critical currents for switching and excitation were observed to be modulated in an

• and the abrupt change of (dV/dI)red indicate that the free layers remain single domains (so-called “macrospin approximation”) and are flipped uniformly during the switching by the current-induced STT [7][27]. By analyzing the dependence of the (dV/dI)red change on the direction of current sweep, the

• of STT-assisted resistance switching in multilayered nanowires, raw data before the background subtraction, a schematic diagram of the four-point measurements at low temperature, 2D color maps of (dV/dI)red over a larger current range and under upsweep of the magnetic field, the potential influence

Graphene removal by water-assisted focused electron-beam-induced etching – unveiling the dose and dwell time impact on the etch profile and topographical changes in SiO₂ substrates

• Aleksandra Szkudlarek,
• Jan M. Michalik,
• Inés Serrano-Esparza,
• Zdeněk Nováček,
• Veronika Novotná,
• Piotr Ozga,
• Czesław Kapusta and
• José María De Teresa

Beilstein J. Nanotechnol. 2024, 15, 190–198, doi:10.3762/bjnano.15.18

• deposit, and at a current of 245 pA (higher electron flux) the indent shape. This controllable switching between the hydrocarbons pinning and etching caused by increasing electron flux was explained using the continuum model. The model is based on the dissociation process of adsorbed molecules by

• deposited should be etched away with water. The parameters used in our experiments are even further from the switching point. Therefore, the protrusions in the middle of the line profiles, visible in Figure 3 for doses D3–D5, are unlikely due to the deposition of hydrocarbons. The nanostructurizing process

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

• magnetization of the sample was first saturated out-of-plane by switching on the objective lens of the TEM and then allowing it to relax. To switch the magnetic configuration, a small objective-lens field was applied, which resulted in in-plane (Hip) and out-of-plane (Hoop) fields applied to the sample (Figure

Dual-heterodyne Kelvin probe force microscopy

• Benjamin Grévin,
• Fatima Husainy,
• Dmitry Aldakov and
• Cyril Aumaître

Beilstein J. Nanotechnol. 2023, 14, 1068–1084, doi:10.3762/bjnano.14.88

• consists in “switching” (during a selected time window of the spectroscopic sequence) the sideband generation to the standard AM-heterodyne KPFM scheme (i.e., ωac = ω1 – (ω0 + Δω0) instead of ωac = ω1 – (ω0 + Δω0) + nωmod when working with the 4n-th sidebands). In this configuration, the demodulated

• the surface) by switching the configuration of the setup to perform pump-probe KPFM measurements. We will merely remind that now, the SPV time-measurement proceeds by recording the KPFM compensation potential as a function of a time-delay between the optical pump and the probe. The probe is obtained

Carboxylic acids and light interact to affect nanoceria stability and dissolution in acidic aqueous environments

• Matthew L. Hancock,
• Eric A. Grulke and
• Robert A. Yokel

Beilstein J. Nanotechnol. 2023, 14, 762–780, doi:10.3762/bjnano.14.63

• biological systems. Ceria has been considered a possible UV filter in sunscreens [2][42]. Oxygen defects in the crystal lattice of ceria can presumably be altered by UV irradiation causing a redox switching of the cerium atoms between Ce3+ and Ce4+. This could explain the observance of a blue shift of the

Current-induced mechanical torque in chiral molecular rotors

• Richard Korytár and
• Ferdinand Evers

Beilstein J. Nanotechnol. 2023, 14, 711–721, doi:10.3762/bjnano.14.57

• velocity must be corrected due to energy transfer, which yields a term of the second order in μ. Switching in the SA The condition for switching is that the energy gain of the path, Equation 6, must overcome the potential barrier. In the limit of large velocities, the kinetic term (due to angular momentum

• boosts) dominates over the potential gain via angular boosts, and the condition becomes . For a single particle, the switching condition reads . Under a current, the velocity boosts can be added sequentially, and the condition becomes where we introduced the incident momentum current . The nominator of

• large impact velocities the switching due to angular momentum boosts overtakes and the threshold Im drops inversely proportional to . This regime is the familiar garden hose effect. To take a closer look at the mechanism of angular momentum boosts, we have plotted the threshold momentum current Ip for