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

• quality, and subsets as small as 30 images have been reported sufficient in some cases [22][23]. Nonetheless, we analyzed the dependence of the model prediction quality on the training set size (see Supporting Information File 1, Figure S6 and Table S1). Given the varying quality of our videos

• consistency between the two approaches. Statistical testing (Table 1) supports this: While one instance of growth rate comparison (Figure 4a) yielded a statistically significant difference (p = 0.026), the associated effect size was small (d = 0.213), indicating only a minor practical difference. All other

Wavelength-dependent correlation of LIPSS periodicity and laser penetration depth in stainless steel

• Nitin Chaudhary,
• Chavan Akash Naik,
• Shilpa Mangalassery,
• Jai Prakash Gautam and
• Sri Ram Gopal Naraharisetty

Beilstein J. Nanotechnol. 2025, 16, 1302–1315, doi:10.3762/bjnano.16.95

• 20 µm. It involved a meticulous process to fine-tune laser parameters such as power, speed, and step size to attain the desired LIPSS pattern. Each incident wavelength required creating samples with varying scanning speeds, specifically, 0.2, 0.5, 0.8, and 1.5 mm/s, with the input laser beam power

• best ladder-like structures over a large area. The size of the sample that one can make is limited by the scanning range of the three axis stages. Electrolytic etching The cross-sectional area of the laser-treated stainless steel samples underwent thorough polishing across their thickness using various

• . The optimization regarding LIPSS was performed by varying the scanning speed and the step size between the consecutive lines to generate large-area LIPSS for each irradiation wavelength. Effect of scanning speed The comparative analysis of LSFL and HSFL spatial periodicity with varying numbers of

Enhancing the photoelectrochemical performance of BiOI-derived BiVO₄ films by controlled-intensity current electrodeposition

• Huu Phuc Dang,
• Khanh Quang Nguyen,
• Nguyen Thi Mai Tho and
• Tran Le

Beilstein J. Nanotechnol. 2025, 16, 1289–1301, doi:10.3762/bjnano.16.94

• optimize its conversion to BiVO4. By systematically adjusting the deposition current density and vanadium precursor concentration, we achieved fine control over the crystallinity, grain size, porosity, and optical properties of the resulting films. This level of tunability leads to substantial improvements

• kinetics. The average crystallite size (grain size) of the BiVO4 films was estimated using the Scherrer equation based on the full width at half maximum (FWHM) of the (121) diffraction peak. The Scherrer equation to calculate average crystallite size (grain size) [24][25] is where λ is the X-ray wavelength

• , θ is the Bragg angle in radians, β is the full width at half maximum of the peak in radians, D is the particle size, and k is a constant with a value of 0.9. As shown in Table 1, an increase in the deposition current and VO(acac)2 concentration led to narrower peak widths and larger crystallite

Acrocomia aculeata oil-loaded nanoemulsion: development, anti-inflammatory properties, and cytotoxicity evaluation

• Verónica Bautista-Robles,
• Hady Keita,
• Edgar Julián Paredes Gamero,
• Layna Tayná Brito Leite,
• Jessica de Araújo Isaías Muller,
• Mônica Cristina Toffoli Kadri,
• Ariadna Lafourcade Prada and
• Jesús Rafael Rodríguez Amado

Beilstein J. Nanotechnol. 2025, 16, 1277–1288, doi:10.3762/bjnano.16.93

• determined the hydrophilic–lipophilic equilibrium ratio of the nanoemulsion. It was shown to have an adequate droplet size (173.60 nm) with excellent homogeneity (polydispersity index 0.200). The anti-inflammatory activity of the nanoemulsion was evaluated by the carrageenan-induced paw edema method. Finally

• ]. Despite these variations, the compositional profiles remain comparable, underscoring the distinctive chemical characteristics of the oil studied. Preparation of nanoemulsions, required hydrophilic–lipophilic balance, droplet size, zeta potential, and shelf stability The development of a nanoemulsion

• requires the determination of key formulation parameters, including the required hydrophilic–lipophilic balance (HLBr), droplet size, and polydispersity index (PDI) [42][43][44]. In this study, the Acrocomia aculeata oil nanoemulsion (AANE) exhibited a uniform droplet size distribution and a stable PDI

Better together: biomimetic nanomedicines for high performance tumor therapy

• Imran Shair Mohammad,
• Gizem Kursunluoglu,
• Anup Kumar Patel,
• Hafiz Muhammad Ishaq,
• Cansu Umran Tunc,
• Dilek Kanarya,
• Mubashar Rehman,
• Omer Aydin and
• Yin Lifang

Beilstein J. Nanotechnol. 2025, 16, 1246–1276, doi:10.3762/bjnano.16.92

• reach deep tissues. Importantly, platelets are reported to activate and specifically bind to cancer cells [50]. Therefore, platelets have been used to load cytotoxic drugs for prolonged circulation in blood, escape immune response, and reach the tumor site [51]. Due to their small size, platelet-based

• cholesterol uptake, and induce ferroptosis of the cancer cells [67]. HDL presents many features that make it ideal for drug delivery applications including biocompatibility and biodegradability, long circulation, hydrophobic core, and small size. The main lipoprotein of HDL is alpha apolipoprotein (apo A-I

• factors. Yang et al. produced ceria nanoparticles, nanoclusters, and nanochains by changing molar concentration, time of reaction, and temperature. They found that size and morphology of the nanomaterials can be optimized by careful tuning of switchable ionic redox systems (Ce3+/Ce4+), the unique

Functional bio-packaging enhanced with nanocellulose from rice straw and cinnamon essential oil Pickering emulsion for fruit preservation

• Tuyen B. Ly,
• Duong D. T. Nguyen,
• Hieu D. Nguyen,
• Yen T. H. Nguyen,
• Bup T. A. Bui,
• Kien A. Le and
• Phung K. Le

Beilstein J. Nanotechnol. 2025, 16, 1234–1245, doi:10.3762/bjnano.16.91

• seen for rBP compared to BP, which indicates a decrease in interplanar spacing, suggesting that NC has infiltrated the PVA lattice structure. For rCBP, with the addition of PE-CEO that has a larger particle size (≈700 nm [38]), the peaks were shifted towards lower angles and the peak intensity was

• suspension has a size of around 20–30 nm and a length below 300 nm, and size increase due to structural collapse would be seen upon drying [24][46]. A SEM image of the nanocellulose sample is given in Figure 3a. After freeze-drying, some coagulation occurred, increasing the size of the sample to reach ≈4 µm

• ], and modified atmosphere polypropylene [55]. In this research, without any biopackaging, the strawberry would grow moldy right on day 11 and become dryer and reduced in size, which led to the fastest decrease in mass. In contrast, at no or very low concentration of CEO (up to 2% (v/w)), the time until

Hydrogels and nanogels: effectiveness in dermal applications

• Jéssica da Cruz Ludwig,
• Diana Fortkamp Grigoletto,
• Daniele Fernanda Renzi,
• Wolf-Rainer Abraham,
• Daniel de Paula and
• Najeh Maissar Khalil

Beilstein J. Nanotechnol. 2025, 16, 1216–1233, doi:10.3762/bjnano.16.90

• nanocarriers, pharmacokinetic and pharmacodynamic parameters – such as size, release kinetics, and biodistribution of the encapsulated drug – must be carefully defined to maximize the efficacy of the system [65]. Such considerations are essential to obtain stable formulations with a controlled release profile

• process, which is carried out in a confined nano-/microscale space, is another efficient strategy for the formation of nanogels. In this case, the size of the gels is limited by confining the cross-linking to intraparticle rather than interparticle cross-linking [43][44]. Topical and transdermal drug

• antimetabolite used to treat rheumatoid arthritis, were obtained by Sadarani et al. (2019). First, methotrexate was encapsulated in deformable liposomes followed by incorporation in the hydroxyethylcellulose gel. The nanogel-MTX presented a small particle size of 110 ± 20 nm and a drug encapsulation rate of 42

Investigation of the solubility of protoporphyrin IX in aqueous and hydroalcoholic solvent systems

• Michelly de Sá Matsuoka,
• Giovanna Carla Cadini Ruiz,
• Marcos Luciano Bruschi and
• Jéssica Bassi da Silva

Beilstein J. Nanotechnol. 2025, 16, 1209–1215, doi:10.3762/bjnano.16.89

• 50 times and negatively stained with a 2% (w/v) uranyl acetate solution before imaging. To investigate micelle formation, the samples were prepared at 37 °C. Micelle size measurements obtained by TEM were reported as the mean (± standard deviation; SD), based on the analysis of 250 micelles per

• of solubility were later contradicted by particle size distribution analysis. Figure 2 shows the solubility behavior of PpIX in water and EtOHabs, with mean concentrations of 0.497 ± 0.054 mg/mL in water, and 0.179 ± 0.004 mg/mL in EtOHabs. In contrast, the systems containing 0.4 mg/mL of PpIX in

• P407 (water, EtOH50, and EtOH77) are displayed in Figure 5. It was possible to observe significant variations in micelle size and morphology. While in the aqueous system well-defined circular micelles are observed with an average diameter of 11.81 ± 1.71 nm, in EtOH50 and EtOH77 the samples exhibited

Chitosan nanocomposite containing rotenoids: an alternative bioinsecticidal approach for the management of Aedes aegypti

• Maria A. A. Bertonceli,
• Vitor D. C. Cristo,
• Ivo J. Vieira,
• Francisco J. A. Lemos,
• Arnoldo R. Façanha,
• Raimundo Braz-Filho,
• Gustavo V. T. Batista,
• Luis G. M. Basso,
• Sérgio H. Seabra,
• Thalya S. R. Nogueira,
• Felipe F. Moreira,
• Arícia L. E. M. Assis,
• Antônia E. A. Oliveira and
• Kátia V. S. Fernandes

Beilstein J. Nanotechnol. 2025, 16, 1197–1208, doi:10.3762/bjnano.16.88

• with smaller size, improved polydispersity index, and enhanced stability, evidenced by a higher zeta potential. FTIR analysis confirmed rotenoid incorporation into the nanocomposite and suggested hydrogen bonding or potential covalent interaction with chitosan functional groups. Bioassays demonstrated

• efficiency, the size analysis of the produced nanochitosan particles confirmed that both ion gelation methods produced nanostructures smaller than 100 nm (Figure 1). However, in Figure 1B, the peak area is narrower, indicating a higher uniformity in particle size. Figure 2C and 2D also show that the

• excessive cross-linking by TPP, thereby reducing both nanoparticle size and polydispersity [19]. Furthermore, the inclusion of rotenoids in the nanocomposite seemingly improved its dispersibility (Figure 2B and 2D) compared to respective controls of empty nanoparticles (Figure 2A and 2C). The presence of

Electronic and optical properties of chloropicrin adsorbed ZnS nanotubes: first principle analysis

• Prakash Yadav,
• Boddepalli SanthiBhushan and
• Anurag Srivastava

Beilstein J. Nanotechnol. 2025, 16, 1184–1196, doi:10.3762/bjnano.16.87

• , which can be tailored through rational design. By precisely controlling their size, shape, synthesis conditions, and functionalization, nanomaterials can achieve extraordinary magnetic, electrical, optical, mechanical, sensing, anticancer, and photocatalytic properties that significantly differ from

• composites with other materials, such as carbon nanotubes, to optimize performance [26]. Furthermore, the flexible synthesis of ZnS NTs with controlled morphology and size allows for tailoring their sensing capabilities. External stimuli combined with machine learning can further enhance their sensitivity

Mechanical stability of individual bacterial cells under different osmotic pressure conditions: a nanoindentation study of Pseudomonas aeruginosa

• Lizeth García-Torres,
• Idania De Alba Montero,
• Eleazar Samuel Kolosovas-Machuca,
• Facundo Ruiz,
• Sumati Bhatia,
• Jose Luis Cuellar Camacho and
• Jaime Ruiz-García

Beilstein J. Nanotechnol. 2025, 16, 1171–1183, doi:10.3762/bjnano.16.86

• estimation of the size of PA by AFM was made using the cross-section tool along both axes to obtain its length, width, and height, as shown in Figure 2A and 2B. With a resolution of 48 points or pixels per line, FV can also provide accurate morphological measurements for bacteria, as shown in the 3D

• in AFM measurements when compared to other experimental techniques such as optical microscopy or electron microscopy. This is due to the fact that the finite size of the tip apex introduces an overestimation in the lateral dimensions of the imaged object but not of its height, where AFM excels in

• direction of the scanning in relation to the orientation of the bacteria. Especially at the edges, the influence of the finite 3D size and angle of the AFM tip became evident because indentation can take place perpendicularly, along the longer axis of PA, or in an intermediate diagonal direction of the

Transfer function of an asymmetric superconducting Gauss neuron

• Fedor A. Razorenov,
• Aleksander S. Ionin,
• Nikita S. Shuravin,
• Liubov N. Karelina,
• Mikhail S. Sidel’nikov,
• Sergey V. Egorov and
• Vitaly V. Bol’ginov

Beilstein J. Nanotechnol. 2025, 16, 1160–1170, doi:10.3762/bjnano.16.85

• to direct interaction of the input and readout elements (which does not involve the neuron as a non-linear converter) as was shown in [27]. Despite the use of a superconducting screen in experiments [17][18], such an interaction can occur due to the finite size of the screen. The interaction is

• ). Some methods of suppressing this interaction are discussed in [26]. The simplest ones include increasing the size of the screen and creating a reverse CL that is not coupled to the neuron (except screen-mediated coupling) and carries the control current in the opposite direction. Calculations show that

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

• oxides [36][37], or metal electrodes [38][39], using electrostatic [37], diffusive [40], or electrophoretic [39] pathways. Additionally, in contrast to form-in-place-methods such as CTS [20], the NP size does not depend on the loading [40]. Nanoparticle generation by laser synthesis and processing of

• solid solution fcc structure, whereas this study was more focused on the applicability in catalysis [18]. By irradiating metal chloride salts, premixed in ethanol and then added to a hexane solution with oleic acid present, Wang et al. successfully synthesized PtIrCuNiCr NPs with a narrow size

• ]. Those rules are very high cooling rates, the presence of at least three constituting elements, atomic size differences over 12%, a significant negative heat of mixing of major elements, small material dimensions (preferably at the nanoscale, favoring high cooling rates), and post-processing effects

Deep learning for enhancement of low-resolution and noisy scanning probe microscopy images

• Samuel Gelman,
• Irit Rosenhek-Goldian,
• Nir Kampf,
• Marek Patočka,
• Maricarmen Rios,
• Marcos Penedo,
• Georg Fantner,
• Amir Beker,
• Sidney R. Cohen and
• Ido Azuri

Beilstein J. Nanotechnol. 2025, 16, 1129–1140, doi:10.3762/bjnano.16.83

• size. In the well-established algorithm of blind reconstruction [13], “certainty maps” are provided, showing clearly where the tip does and does not measure each point. The sharper the tip relative to surface features, the more points it can access. Having said that, blind reconstruction has been used

• to map the surface to scales below the measured image feature size by “erosion” [14]. It is also important to note that recently machine-learning based methods have been applied to blind reconstruction to reconstruct true surface images from AFM images experimentally broadened by the tip [15

• apply traditional methods and SR deep learning models on low-resolution images and increase their resolution to a 4× scale. Increasing the resolution to the 4× scale will make the images the same size as the high-resolution GT images gathered by AFM. A computational pipeline was established to take the

Towards a quantitative theory for transmission X-ray microscopy

• James G. McNally,
• Christoph Pratsch,
• Stephan Werner,
• Stefan Rehbein,
• Andrew Gibbs,
• Jihao Wang,
• Thomas Lunkenbein,
• Peter Guttmann and
• Gerd Schneider

Beilstein J. Nanotechnol. 2025, 16, 1113–1128, doi:10.3762/bjnano.16.82

• combination of the ellipsoidal mirror and central stop produces illumination of the sample (Figure 1a) over an angular range of 0.83–1.18°. The final size of the ellipsoidal mirror’s focused spot (≈2.7 μm × 0.7 μm) is smaller than most samples, and therefore to generate an image of the sample, the focused

• condenser and objective NA. These partially coherent models must therefore also specify the size of a coherence domain over which field amplitudes are added before computing intensities. The coherence patch size arising from our beamline illumination has not been measured in our TXM. The pc-PWE model

• assumed that this size was small, and as discussed later, we also find that to match our acquired data, the coherence patch size must be small. Future measurements of the actual coherence patch size of our TXM will be important to determine whether the measured size matches the predictions of a small

Influence of ion beam current on the structural, optical, and mechanical properties of TiO₂ coatings: ion beam-assisted vs conventional electron beam evaporation

• Agata Obstarczyk and
• Urszula Wawrzaszek

Beilstein J. Nanotechnol. 2025, 16, 1097–1112, doi:10.3762/bjnano.16.81

• occurred for all coatings. In particular, an increase in ion beam current led to a reduction in crystallite size by approximately 30% compared to coatings prepared by conventional EBE process. The average anatase crystallite size for annealed films was in the range of 30.8 to 43.5 nm. A detailed SEM

• which the crystallites sizes were also determined. The crystallite size was calculated using MDI Jade 5.0 software employing the Scherrer equation [32]. Thin film coatings deposited by EBE method had crystallites with an average size of 43.5 nm calculated from the (004) plane. In turn, increasing the

• ion gun current from 3 to 4 A caused a decrease in crystallite size from 34.7 to 30.8 nm after annealing (Figure 1d). The results of the structure analysis are shown in Table 2. Based on the XRD patterns, there is no evidence for the occurrence of TiO2 with the rutile phase, as its specific peaks were

Fabrication of metal complex phthalocyanine and porphyrin nanoparticle aqueous colloids by pulsed laser fragmentation in liquid and their potential application to a photosensitizer for photodynamic therapy

• Taisei Himeda,
• Risako Kunitomi,
• Ryosuke Nabeya,
• Tamotsu Zako and
• Tsuyoshi Asahi

Beilstein J. Nanotechnol. 2025, 16, 1088–1096, doi:10.3762/bjnano.16.80

• . The nanoparticles having strong absorption in the NIR region (700 to 900 nm) were successfully prepared by PLFL, and the colloids remained stably dispersed over a period of at least one week. Particle size and size distribution determined by DLS measurements depended on the molecules. The compound

• -dependent diameters were estimated to be 40 to 80 nm from the number-weighted size distributions by DLS measurements (see Figure S2, Supporting Information File 1). The Z-average values suggest that AlClPc and PtOEP have a narrower size distribution than FePc, CoPc, and ZnPc. In general, molecular

• microcrystalline powder into small nanoparticles with high efficiency. The particle size was determined by dynamic light scattering measurements (Zetasizer nanoS, Malvern Instruments). In this analysis, the prepared colloids were diluted more than tenfold with ion-exchanged water. Dispersion stability Dispersion

Single-layer graphene oxide film grown on α-Al₂O₃(0001) for use as an adsorbent

• Shiro Entani,
• Mitsunori Honda,
• Masaru Takizawa and
• Makoto Kohda

Beilstein J. Nanotechnol. 2025, 16, 1082–1087, doi:10.3762/bjnano.16.79

• (around 2900 cm−1). The presence of intense D and D+G peaks is indicative of the existence of graphene film disorder. This phenomenon can be attributed to the reduced size of the graphene grains that are produced at lower growth temperatures [18]. Following the oxidation process, a broadening of all peaks

• and primers in addition to adsorbents, which could be investigated in future research. Experimental Growth of SLGO on α-Al2O3(0001) SLGO was grown by a method analogous to [35]. Before synthesizing SLGO, SLG was grown on an α-Al2O3(0001) substrate (size: 10 × 10 mm2, thickness: 430 µm). The substrate

Piezoelectricity of hexagonal boron nitrides improves bone tissue generation as tested on osteoblasts

• Sevin Adiguzel,
• Nilay Cicek,
• Zehra Cobandede,
• Feray B. Misirlioglu,
• Hulya Yilmaz and
• Mustafa Culha

Beilstein J. Nanotechnol. 2025, 16, 1068–1081, doi:10.3762/bjnano.16.78

• phases exhibit ferroelectric properties, except for the cubic crystalline phase [23]. The size and crystal structure of BaTiO3 can vary based on the synthesis method. Notably, BaTiO3 holds promise as a bone-like graft and as a nano–bio interface, thanks to its excellent cytocompatibility and its positive

• SiC surface and stored at room temperature. The synthesized hBN and commercial BaTiO3 nanoparticles (Sigma-Aldrich, Germany) were characterized using several analytical techniques. Transmission electron microscopy (TEM, JEOL ARM 200 CF, 200 keV) was employed to examine morphology and particle size by

• -Vis-NIR) measured optical properties across the 200–800 nm range, while dynamic light scattering (DLS, Malvern Panalytical) provided data on hydrodynamic size and zeta potential after dispersing 1 mg of material in 1 mL of deionized water and sonicating for 30 min. Finally, piezoresponse force

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

• such as quantum dots [95][96][97][98][99], the nanoscale of size and dimensions can result in properties that are not attainable with bulk materials. In other words, the key to developing functionality and improving properties lies in controlling the nanostructure in addition to the creation of the

• crystal nanoarchitectonics Liquid crystals are an attractive form of soft materials, characterized by a combination of moderate fluidity and orientation [223][224][225]. They exhibit a high degree of diversity with regard to both the type of phase and the size of the regular structures. Furthermore, they

Multifunctional properties of bio-poly(butylene succinate) reinforced with multiwalled carbon nanotubes

• Volodymyr Krasinskyi,
• Krzysztof Bajer,
• Ludmila Dulebova,
• Nickolas Polychronopoulos,
• Oksana Krasinska and
• Daniel Kaczor

Beilstein J. Nanotechnol. 2025, 16, 1014–1024, doi:10.3762/bjnano.16.76

• nm and a length of up to 40 μm (Figure 1b). The microstructure of PBS/CNT_10 (Figure 1c) and PBS/CNT_0.5 (Figure 1d) samples is quite similar. In the SEM images of both samples, small white inclusions (nanotubes) ranging from 24 to 200 nm in size are evenly distributed over the surface. On the

A calix[4]arene-based supramolecular nanoassembly targeting cancer cells and triggering the release of nitric oxide with green light

• Cristina Parisi,
• Loredana Ferreri,
• Tassia J. Martins,
• Francesca Laneri,
• Samantha Sollima,
• Antonina Azzolina,
• Antonella Cusimano,
• Nicola D’Antona,
• Grazia M. L. Consoli and
• Salvatore Sortino

Beilstein J. Nanotechnol. 2025, 16, 1003–1013, doi:10.3762/bjnano.16.75

• inset shows the size distribution of the same solution of 1 obtained by DLS. (B) Fluorescence emission spectrum, λexc = 467 nm, of 1 as in (A). The inset shows the fluorescence decay and the related fitting of the same solutions recorded at λexc = 455 nm and λem = 550 nm. T = 25 °C. Cell viability

• observed upon exposure of an air-equilibrated NOPD 2 (100 µM) solution at λexc = 420 nm after 0, 6, 11, 20, 30, 40, 60, 80, 100, 130, and 160 min. (A) Absorption spectrum of the supramolecular complex 1·2 in water; [1] = 50 µM; [2] = 40 µM. The inset shows the size distribution of the same solution of 1·2

Time-resolved probing of laser-induced nanostructuring processes in liquids

• Maximilian Spellauge,
• David Redka,
• Mianzhen Mo,
• Changyong Song,
• Heinz Paul Huber and
• Anton Plech

Beilstein J. Nanotechnol. 2025, 16, 968–1002, doi:10.3762/bjnano.16.74

• ][12][13], as well as laser fusion or laser melting in liquid (LML) [14][15]. The latter is used to achieve the opposite effect of increasing particle size with the aim for high quality in shape or size. The presence of a liquid in laser processing, on the one hand, has practical advantages, such as

• -crystalline samples, which lack nucleation sites. Thus, a transient overheating above the melting point could even take place, which lasts for 100 to 200 ps. On longer timescales, heat dissipation can set in during the heating with nanosecond or longer pulses. Heat dissipation in small NPs is strongly size

• the transient absorption technique was nicely demonstrated in a work by Hu et al. [87], in which they measured solvated NPs of varying sizes and determined the effect of size on the rate of energy relaxation. As shown in Figure 7A, the transient bleach results for larger NPs showed two distinct decay

Shape, membrane morphology, and morphodynamic response of metabolically active human mitochondria revealed by scanning ion conductance microscopy

• Eric Lieberwirth,
• Anja Schaeper,
• Regina Lange,
• Ingo Barke,
• Simone Baltrusch and
• Sylvia Speller

Beilstein J. Nanotechnol. 2025, 16, 951–967, doi:10.3762/bjnano.16.73

•  3c. The average values of apparent height, diameter, and volume are compared. Irregular mitochondria tend to be smaller with reduced statistical significance (Welch’s t-test). The size distribution of metabolically active mitochondria is bimodal, that is, diameters predominantly fell into two

• difference in average mitochondrial volume (p < 0.001, Welch’s t-test). Edge memory effect Metabolically active mitochondria possess the ability to respond to external stimuli. In cells, these responses are reflected in alterations to the shape, size, and number of the mitochondria, which in turn influence

• stability contrasts with the structural alterations reported with more violent techniques, such as deformability cytometry [37]. For mitochondria isolated using the nitrogen cavitation method, fixed mitochondria exhibit significantly smaller dimensions (Figure 4b). The reduction in size can be explained by

Synthesis of biowaste-derived carbon-dot-mediated silver nanoparticles and the evaluation of electrochemical properties for supercapacitor electrodes

• Navya Kumari Tenkayala,
• Chandan Kumar Maity,
• Md Moniruzzaman and
• Subramani Devaraju

Beilstein J. Nanotechnol. 2025, 16, 933–943, doi:10.3762/bjnano.16.71

• environmentally friendly as CDs play a role as capping, reducing, and stabilizing agent without addition of any chemicals. PG-CDs-AgNPs showed a particle size of 10 nm having excellent fluorescence emission in the blue region, and it has been explored as an electrode material for supercapacitor applications. The

• the solution to brownish black. The gradual increase in the peak intensity without any spectral shift of absorption maxima (λmax) suggests that with increasing reaction time uniform-size stable nanoparticles were formed [27]. The excitation–wavelength-dependent emission spectra of the as-synthesized

• distribution of PG-CDs-AgNPs was responsible for the enhanced surface area [35]. The pore size distribution plot of PG-CDs-AgNPs suggests the mesoporous characteristics (Supporting Information File 1, Figure S1b), which, via the diffusion of electrolyte ions, is highly efficient for electrochemical charge