Subdigital integumentary microstructure in Cyrtodactylus (Squamata: Gekkota): do those lineages with incipiently expressed toepads exclusively exhibit adhesive setae?

• Philipp Ginal,
• Yannick Ecker,
• Timothy Higham,
• L. Lee Grismer,
• Benjamin Wipfler,
• Dennis Rödder,
• Anthony Russell and
• Jendrian Riedel

Beilstein J. Nanotechnol. 2026, 17, 38–56, doi:10.3762/bjnano.17.4

• traits, which were applicable to all of the species examined (apical diameter, basal diameter, density, stalk length, but not effective bending stiffness), showed significant and strong phylogenetic signal when measuring both Pagel’s lambda and Blomberg’s K. Overall, the ASRs of the morphometric traits

• apical diameter) for these measurements in the absence of a shift in microstructure type. Stalk density is more constant across the phylogeny, although there is a tentative decrease in density in the seta-group (Figure 3). A strong increase in density is reconstructed for C. cf. consobrinus, the trunk

• seta-bearing species in the brevipalmatus group, characterised by strongly expressed lamella-like scales, is the only sampled species to show a strong decrease in density. Overall, effective bending stiffness decreases in the seta-group (except for the secondarily spine-bearing C. zebraicus [generalist

Reduced graphene oxide paper electrode for lithium-ion cells – towards optimized thermal reduction

• Agata Pawłowska,
• Magdalena Baran,
• Stefan Marynowicz,
• Aleksandra Izabela Banasiak,
• Adrian Racki,
• Adrian Chlanda,
• Tymoteusz Ciuk,
• Marta Wolczko and
• Andrzej Budziak

Beilstein J. Nanotechnol. 2026, 17, 24–37, doi:10.3762/bjnano.17.3

• and thickness were determined with scanning electron microscopy imaging. This paper also reveals electrical and electrochemical properties of the material. The conductivity of the material obtained at 800 °C reached ≈70 S/cm, and the discharge capacity reached ≈160 mAh/g at 100 mA/g current density

• specific surface area, and low bulk density [3][4]. The role of rGO in electrode materials can be considered in two ways. It can be applied as a conductive additive, improving transport properties and, as a result, enhancing capacity [5]. It can also be the active material itself [6][7]. To mention just a

• 1 M LiPF6 solution in EC/DMC (Sigma-Aldrich/Merck) served as the electrolyte. A Whatman GF/A filter was used as a separator. The current rates were calculated based on the targeted current density and active mass material, in this case, the mass of the positive electrode (the investigated graphene

Competitive helical bands and highly efficient diode effect in F/S/TI/S/F hybrid structures

• Tairzhan Karabassov,
• Irina V. Bobkova,
• Pavel M. Marychev,
• Vasiliy S. Stolyarov,
• Vyacheslav M. Silkin and
• Andrey S. Vasenko

Beilstein J. Nanotechnol. 2026, 17, 15–23, doi:10.3762/bjnano.17.2

• through the hybrid structure as a function of q, from which the supercurrent and critical current of the system are determined. The supercurrent in the diffusive limit can be found from the expression Performing the unitary transformation U, the current density transforms as follows: The total

• supercurrent flowing through the system along the y-direction can be calculated by integrating the current density of the total width of the F/S/TI/S/F structure: where Is1, Is2, and IN are the total supercurrents integrated along the x-direction in S1, S2 and N regions, respectively. Results and Discussion We

• , the diode efficiency is quite low and, in this case, does not exceed several percent. In the absence of any exchange field, the supercurrent is I(q = 0) = 0, which means that the ground state is a conventional state with zero Cooper pair momentum. To get more insight, we plot the supercurrent density

Quantitative estimation of nanoparticle/substrate adhesion by atomic force microscopy

• Aydan Çiçek,
• Markus Kratzer,
• Christian Teichert and
• Christian Mitterer

Beilstein J. Nanotechnol. 2026, 17, 1–14, doi:10.3762/bjnano.17.1

• . Since it is assumed that NPs are single-charged [5], the QMF can, on the one hand, be used for scanning the NP mass distribution and, under the common assumption of spherical shape and the theoretical density of Cu, the size distribution. On the other hand, the QMF can be also be employed for filtering

• density of Cu) were considered. Assuming an initial velocity of ≈100 m·s−1 [45] for 0 V acceleration bias, the total energy per atom increases linearly from 0.003 eV·atom−1 at 0 V to 0.068 eV·atom−1 at 1000 V, placing the single-charged NPs within the low-energy regime (soft landing) [46]. Note, the term

• bias V. The density ρ was assumed to be the room-temperature bulk density of Cu with 8935 kg·m−3 [52]. The parameters A and b, taken from the literature, are 188 m1.35·s−1 and 0.35, respectively [45], and d represents the NP diameter. NP charge states may vary as neutral, single, or multiple, while

Terahertz-range on-chip local oscillator based on Josephson junction arrays for superconducting quantum-limited receivers

• Fedor V. Khan,
• Lyudmila V. Filippenko,
• Andrey B. Ermakov,
• Mikhail Yu. Fominsky and
• Valery P. Koshelets

Beilstein J. Nanotechnol. 2025, 16, 2296–2305, doi:10.3762/bjnano.16.158

• influence of array geometry, the presence of a matched load at the nonradiating edge, and the magnitude of the tunneling current density of Josephson junctions on such oscillator characteristics as radiation power, linewidth, and operating range are discussed. Various options are suggested for further

• ]. Nontheless, the use of Nb alloys will only partially solve the problem of high-frequency generation due to high surface losses in NbN and NbTiN [18][25][26]. Note that the use of Nb–Al/AlN–NbN allows for the fabrication of tunnel junctions with a tunnel current density of up to 100 kA/cm2 with a quality

• ratio Rj/Rn over 20, where Rj and Rn are the resistance of the SIS junction below and above the gap voltage Vg, respectively [20]. A high tunnel current density is crucial for the RF and IF bandwidth of the mixer; however, to the best of our knowledge, the FFO based on Nb alloys has not been developed

Visualizing nanostructures in supramolecular hydrogels: a correlative study using confocal and cryogenic scanning electron microscopy

• Shaun M. Smith,
• Ferdinando Malagreca,
• Jacqueline Hicks,
• Giuseppe Mantovani,
• David B. Amabilino,
• Christopher Parmenter and
• Lluïsa Pérez-García

Beilstein J. Nanotechnol. 2025, 16, 2274–2284, doi:10.3762/bjnano.16.156

• curvature, density gradients, and local structural heterogeneity. Significantly, this morphology closely matched the features observed in cryo-SEM, where fibre curvature and network continuity were again evident (Figure 8). The strict correlation between CLSM and cryo-SEM for DPP-BC@Gel suggests that this

• fluorophore accurately reflects the native gel structure without significantly disrupting it. Domains consisting of lower fibre density can also be observed with both imaging techniques. With CLSM alone, it would not be provable whether these low-fibre-density areas were truly free of fibres or simply

• contained fibres that were not encapsulating fluorophore. Given that the same low-fibre-density areas are seen in cryo-SEM and are of the same approximate size, this structural heterogeneity can be confirmed not to be an artefact of CLSM but rather intrinsic to the microscale morphology of the self

Geometry-controlled engineering of the low-temperature proximity effect in normal metal–superconductor junctions

• Munisa A. Tomayeva,
• Vyacheslav D. Neverov,
• Andrey V. Krasavin,
• Alexei Vagov and
• Mihail D. Croitoru

Beilstein J. Nanotechnol. 2025, 16, 2265–2273, doi:10.3762/bjnano.16.155

• to it. This phenomenon, known as the proximity effect, enables normal material to support supercurrents and to exhibit a reduced density of states near the Fermi level, where a gap opens in the single-particle spectrum as electrons form into Cooper pairs [1][2][3][4]. At the same time, unpaired

• scales, the proximity effect is determined by the shorter of these two length scales [37][38][39]. These results have been obtained for materials and samples with strictly defined dimensionality. In systems with quasi-low dimensionality or multiband materials, where the single-particle density of states

• ) suppresses it. Another critical factor is the interface transparency. A perfectly reflective interface (zero transparency) completely decouples SC and NM, suppressing proximity-induced correlations and producing an abrupt change in the Cooper pair density [7][27][41]. Conversely, a perfectly transparent

Chiral plasmonic nanostructures fabricated with circularly polarized light

• Tian Qiao and
• Ming Lee Tang

Beilstein J. Nanotechnol. 2025, 16, 2245–2264, doi:10.3762/bjnano.16.154

• accelerate photochemical reactions by promoting the photoexcitation of a reactant through the high photonic local density of states (LDOS). As discussed previously, CPL induces a dissymmetric EM field distribution on PNSs (Figure 2 left). This results in faster chemical conversions (several orders of

• diluting the effect of CPL. The synthesis of chiral nanostructures using CPL can be scaled up by illuminating a larger area of substrates with achiral seeds. Other methods for scaling up the synthesis, such as increasing the density of achiral seeds on the substrates or conducting the synthesis in solution

• , are not feasible for CPL-induced chiral structures. Increasing the seed density on the substrates reduces interparticle distance, leading to the formation of achiral dimers, trimers, or even larger clusters. These clusters will have different hot carrier distribution profiles, resulting in varied

Optical bio/chemical sensors for vitamin B₁₂ analysis in food and pharmaceuticals: state of the art, challenges, and future outlooks

• Seyed Mohammad Taghi Gharibzahedi and
• Zeynep Altintas

Beilstein J. Nanotechnol. 2025, 16, 2207–2244, doi:10.3762/bjnano.16.153

• nanosphere lithography on a glass slide. It greatly improved the conversion of near-NIR light to UV light, achieving a notable increase in UV light intensity (i.e., six times higher at 344 nm) when stimulated with a NIR light at 980 nm using a low power density of about 13 W/cm2. The process optimization was

Electromagnetic study of a split-ring resonator metamaterial with cold-electron bolometers

• Ekaterina A. Matrozova,
• Alexander V. Chiginev,
• Leonid S. Revin and
• Andrey L. Pankratov

Beilstein J. Nanotechnol. 2025, 16, 2199–2206, doi:10.3762/bjnano.16.152

• broadens the operational bandwidth, it also reduces the total absorbed power if the array’s physical size becomes smaller than the Airy spot of the coupling lens. We successfully resolved this issue by implementing a strategy of simultaneous miniaturization and increasing the array density. By halving the

Ultrathin water layers on mannosylated gold nanoparticles

• Maiara A. Iriarte Alonso,
• Jorge H. Melillo,
• Silvina Cerveny,
• Yujin Tong and
• Alexander M. Bittner

Beilstein J. Nanotechnol. 2025, 16, 2183–2198, doi:10.3762/bjnano.16.151

• glycosylated AuNP can provide a simplified model of a viral spike, whenever the virus is very densely coated, for example, influenza by hemagglutinin [18][19]. Hence, our idea is not to emulate complete virions; rather, one NP is emulating one single spike protein. Although the density of the NPs is not very

Hartree–Fock interaction in superconducting condensate fractals

• Edward G. Nikonov,
• Yajiang Chen,
• Mauro M. Doria and
• Arkady A. Shanenko

Beilstein J. Nanotechnol. 2025, 16, 2177–2182, doi:10.3762/bjnano.16.150

• superconductors as its effect is mainly reduced to a chemical potential shift. Deviations from this behavior can only arise in situations of translational symmetry breaking, for example, caused by the presence of external fields that induce spatial variations of the order parameter and electron density. We

• demonstrate that this scenario changes fundamentally in quasicrystalline systems, where the intrinsic lack of translational symmetry leads to a fractal spatial distribution of the superconducting condensate and electron density. By investigating a Fibonacci chain as a prototype quasicrystal, we numerically

• units of tB). Our calculations are performed away from the half-filling as this regime was shown to produce a uniform electronic distribution in Fibonacci chains [22], where the HF potential does not alter superconducting properties. Here, we adopt an electron density of ne = 0.5. Our qualitative

Microplastic pollution in Himalayan lakes: assessment, risks, and sustainable remediation strategies

• Sameeksha Rawat,
• S. M. Tauseef and
• Madhuben Sharma

Beilstein J. Nanotechnol. 2025, 16, 2144–2167, doi:10.3762/bjnano.16.148

• due to surface runoff from tourist activities, plastic trash, and unregulated effluent. For instance, Jain et al. reported a MP density of 110–370 particles/m3 in the Nainital Lake, Uttarakhand, which was highest during the tourist season. The outcomes confirm that human accessibility and lake

• morphology (glacier-fed and rain-fed) influence MP density, though this interaction is poorly studied and requires further work [2]. Similar to what has been happening in Ladakh’s Pangong Lake, MPs carried in the air and over long distances are deposited in water bodies via atmospheric deposition. This is a

• regional results, Table 1 reports documented MP density in some Himalayan freshwater lakes and their typology. Table 2 is a compilation of the most commonly reported dominant polymers and morphologies, as well as the size classes, of MPs in Himalayan lakes. 3.2 Impact on biodiversity, water quality, and

Electron transport through nanoscale multilayer graphene and hexagonal boron nitride junctions

• Aleksandar Staykov and
• Takaya Fujisaki

Beilstein J. Nanotechnol. 2025, 16, 2132–2143, doi:10.3762/bjnano.16.147

• ) method combined with density functional theory (DFT) to compare electron transport through several layers of nanoscale graphene and hexagonal boron nitride (h-BN). Calculations were performed for one to six layers, corresponding to thicknesses of 0.5–3.0 nm, respectively. Electron transport was computed

• [22]. The electron tunneling through ultrathin h-BN crystalline barriers was investigated recently with experimental techniques showing exponential decay of the current with the number of layers [23]. Accurate density functional theory (DFT) calculations demonstrated the bandgap change in one to eight

• for the Pt atoms and a double-zeta polarized basis set was used for all other atoms. Geometry optimization was performed with the LBFGS algorithm until all forces are converged below 0.05 eV·Å−1. The k-point density was selected to be four k-points per angstrom. In case of NEGF, the k-point density in

Quality by design optimization of microemulsions for topical delivery of Passiflora setacea seed oil

• Daniel T. Pereira,
• Douglas Dourado,
• Danielle T. Freire,
• Dayanne L. Porto,
• Cícero F. S. Aragão,
• Myla L. de Souza,
• Guilherme R. S. de Araujo,
• Ana Maria Costa,
• Wógenes N. Oliveira,
• Anne Sapin-Minet,
• Éverton N. Alencar and
• Eryvaldo Sócrates T. Egito

Beilstein J. Nanotechnol. 2025, 16, 2116–2131, doi:10.3762/bjnano.16.146

• . Accordingly, the microemulsions were evaluated for their shear stress and viscosity at both room temperature (25 ± 2 °C) and skin temperature (32.5 ± 2 °C). Microemulsions can exhibit diverse rheological behaviors depending on their type, structure, droplet density, and interdroplet interactions [49]. As

Rapid synthesis of highly monodisperse AgSbS₂ nanocrystals: unveiling multifaceted activities in cancer therapy, antibacterial strategies, and antioxidant defense

• Funda Ulusu,
• Adem Sarilmaz,
• Yakup Ulusu,
• Faruk Ozel and
• Mahmut Kus

Beilstein J. Nanotechnol. 2025, 16, 2105–2115, doi:10.3762/bjnano.16.145

• . [26]. Bacterial suspensions (S. aureus, B. subtilis, and E. coli) were prepared in Mueller–Hinton broth (MHB; Merck, Germany) at a density equivalent to 0.5 McFarland and adjusted to 105–106 CFU/mL. Sample stock solutions (10 mg/mL in 1% DMSO) were serially diluted in 96-well plates to final

• ]. NCs were dissolved in DMSO (10 mg/mL) stock and the DMSO concentration in the cell culture medium was not more than 0.1%. Cells were seeded in 96-well plates at a density of 2 × 104 cells/well, and the plates were incubated in a humidified incubator (95% air and 5% CO2) at 37 °C for 24 h. Triplicate

Toward clinical translation of carbon nanomaterials in anticancer drug delivery: the need for standardisation

• Michał Bartkowski,
• Francesco Calzaferri and
• Silvia Giordani

Beilstein J. Nanotechnol. 2025, 16, 2092–2104, doi:10.3762/bjnano.16.144

• to maintain the desired therapeutic and safety profiles. Assessing this aspect includes quantifying the density and distribution of attached ligands or therapeutic agents. In addition to evaluating the NMs themselves, the manufacturing process must be carefully monitored. Reproducibility, scalability

• peroxidase, or UV-assisted photo-Fenton processes. Notably, oxidised CNOs degrade more readily than their pristine counterparts, due to their higher defect density and greater abundance of oxygen-containing functional groups [42]. These findings highlight that the biodegradability of CNMs strongly depends on

• requires systematic assessment, quantification, and reporting of CNM properties, including size, shape, stability, surface charge and functionalisation, as well as payload density and distribution. Once production and characterisation procedures are standardised, the preclinical evaluation of carbon-based

Multifrequency AFM integrating PeakForce tapping and higher eigenmodes for heterogeneous surface characterization

• Yanping Wei,
• Jiafeng Shen,
• Yirong Yao,
• Xuke Li,
• Ming Li and
• Peiling Ke

Beilstein J. Nanotechnol. 2025, 16, 2077–2085, doi:10.3762/bjnano.16.142

• record its thermal vibration power spectral density. A fit to the fundamental resonance peak, based on the equipartition theorem, yielded the spring constant. Characterization of higher eigenmodes The resonant frequencies of the higher eigenmodes were characterized by performing a frequency sweep using

Molecular and mechanical insights into gecko seta adhesion: multiscale simulations combining molecular dynamics and the finite element method

• Yash Jain,
• Saeed Norouzi,
• Tobias Materzok,
• Stanislav N. Gorb and
• Florian Müller-Plathe

Beilstein J. Nanotechnol. 2025, 16, 2055–2076, doi:10.3762/bjnano.16.141

• surface, and a 13 nm thick amorphous bulk below, which matched the same bead density as our previous random-substrate model. All substrate beads had identical interactions with the spatula, and both layers were held fixed in space. Since the regular top monolayer differed from the fully random arrangement

Beyond the shell: exploring polymer–lipid interfaces in core–shell nanofibers to carry hyaluronic acid and β-caryophyllene

• Aline Tavares da Silva Barreto,
• Francisco Alexandrino-Júnior,
• Bráulio Soares Arcanjo,
• Paulo Henrique de Souza Picciani and
• Kattya Gyselle de Holanda e Silva

Beilstein J. Nanotechnol. 2025, 16, 2015–2033, doi:10.3762/bjnano.16.139

• achieved when the relative humidity was below 45% [47]. Regarding the NE-βCp concentration, it was evident that values above 2% (Figure 2B) led to the formation of more heterogeneous fibers with a higher density of beads, likely because the increased droplet content hindered proper flow and elongation of

• to 0.75% HA showed a higher density of beads, suggesting insufficient polymer chain entanglement, which may have impaired fiber stretching during the electrospinning process. Among the tested concentrations, 1.00% HA yielded the most uniform fibers. This effect may result from a more favorable

• density of hydrophilic (carboxyl –COOH and hydroxyl –OH) and catalytic (carboxyl –COOH) end groups in the amorphous regions between crystalline domains. These terminal groups reduce chain packing in the amorphous regions between crystallites, making them less densely packed than amorphous polymers and

The cement of the tube-dwelling polychaete Sabellaria alveolata: a complex composite adhesive material

• Emilie Duthoo,
• Aurélie Lambert,
• Pierre Becker,
• Carla Pugliese,
• Jean-Marc Baele,
• Arnaud Delfairière,
• Matthew J. Harrington and
• Patrick Flammang

Beilstein J. Nanotechnol. 2025, 16, 1998–2014, doi:10.3762/bjnano.16.138

• TEM (Figure 2F,G). The cement matrix is homogeneous and of medium electron density. It encloses hollow spheroids of various sizes, as well as small electron-dense granules and small lacunae (Figure 2F). The exception is the periphery of the cement spot, which is made up entirely of the matrix, giving

• secretory granules, that is, cells with homogeneous granules and cells with heterogeneous granules (Figure 3G,H, Figure 4A,B). Both types of granules have a size between 2.5 and 4.0 μm in diameter. Homogeneous granules have a uniform electron density with no internal structure (Figure 4A,C). In contrast

Laser ablation in liquids for shape-tailored synthesis of nanomaterials: status and challenges

• Natalie Tarasenka

Beilstein J. Nanotechnol. 2025, 16, 1963–1997, doi:10.3762/bjnano.16.137

• mechanism occurs from nano- or microsized droplets or solid fragments directly ejected from the target. The dominating mechanism of NP formation depends on the laser parameters, mainly laser pulse duration and laser fluence. For the nanosecond laser pulse of high energy density (in the range 108–1010 W·cm−2

• ), the thermal evaporation is preferential [1], while for picosecond and femtosecond laser pulses of lower power density, the explosive ejection mechanism typically prevails resulting in NP formation at earlier stages from the ejected droplets or fragments. 1.3 Nanoparticle nucleation and growth After

• is induced due to the difference of charge density at the sharper end of the structure. As a result, the assembly of the droplet-like shapes form organized dendritic structures instead of loose aggregates due to a stronger repulsion by the sharp ends of the nanodroplets as compared to that of the

Quantum circuits with SINIS structures

• Mikhail Tarasov,
• Mikhail Fominskii,
• Aleksandra Gunbina,
• Artem Krasilnikov,
• Maria Mansfeld,
• Dmitrii Kukushkin,
• Andrei Maruhno,
• Valeria Ievleva,
• Mikhail Strelkov,
• Daniil Zhogov,
• Konstantin Arutyunov,
• Vyacheslav Vdovin,
• Vladislav Stolyarov and
• Valerian Edelman

Beilstein J. Nanotechnol. 2025, 16, 1931–1941, doi:10.3762/bjnano.16.134

• current occurs when eV > Δ. In the case when T ≠ 0 the I–V curve will be smeared [22]. The current–voltage characteristic of a tunnel NIS junction is determined by the following formula [23]: where Rn is the asymptotic resistance of the tunnel junction, NS(E) is the density of states in the superconductor

• the charge transfer by electrons during tunneling through the tunnel SIN junction and the thermal noise of these same electrons as heat carriers: δIω2 is the power spectral density (PSD) of current fluctuations due to shot noise, δPω2 is the PSD of thermal fluctuations, and ⟨δPωδIω⟩ is the correlation

• flux density is S = I × Ω = 1677 Jy = 1.677 × 10−23 W·m−2·Hz−1. For 172.6 K at 100 GHz, we have a blackbody intensity I = 5.23 × 10−16 W·m−2·Hz−1·sr−1. The power density collected by a telescope with an effective aperture of 22.6 m2 is P = 3.79 × 10−22 W·Hz−1. The total power in the 10% band recorded

PEGylated lipids in lipid nanoparticle delivery dynamics and therapeutic innovation

• Peiyang Gao

Beilstein J. Nanotechnol. 2025, 16, 1914–1930, doi:10.3762/bjnano.16.133

• chains arrange on the nanoparticle surface and the potential impacts on LNPs’ physicochemical properties by varying surface PEG density or PEG chemistry. Subsequently, PEG conformations are discussed in terms of their modulation of protein corona formation, cellular uptake, and immunogenic responses

• review first reveals the localization and conformation of PEG lipids on the LNP surface, which is fundamental for understanding how PEG lipids contribute to nanoparticle stability and surface interactions. It then demonstrates how PEG density and chemical structure may influence the physicochemical

• lipid surface density and structure on LNP physicochemical properties Understanding the spatial organization of lipid components within LNPs is critical for optimizing their physicochemical characterization and stability. In particular, the localization of PEG lipids plays a significant role in

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

• JJ-based architectures face fundamental density constraints imposed by magnetic flux manipulation requirements and complex mutual inductive crosstalks. Circuits composed entirely of Josephson junctions (all-JJ circuits) [10][11][12][13][14][15][16] represent a promising platform for energy-efficient

• compact design and new (diode) functionality of various superconducting computing modules and makes possible further increase of integration density compared to well-known RSFQ technology. (a) An equivalent scheme for the “kinetic inductance controllable key” (KICK) as a part of an all-Josephson