Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity

• Nguyen Thi Thanh Tu,
• T. Lan-Anh Vo,
• T. Thu-Trang Ho,
• Kim-Phuong T. Dang,
• Van-Dung Le,
• Phan Nhat Minh,
• Chi-Hien Dang,
• Vinh-Thien Tran,
• Van-Su Dang,
• Tran Thi Kim Chi,
• Hieu Vu-Quang,
• Radek Fajgar,
• Thi-Lan-Huong Nguyen,
• Van-Dat Doan and
• Thanh-Danh Nguyen

Beilstein J. Nanotechnol. 2023, 14, 781–792, doi:10.3762/bjnano.14.64

• nanocomposite was then centrifuged and washed with distilled water. The purified nanocomposite was stored at 4 °C for further experiments. Characterizations of AgNPs@Lac/Alg nanocomposite The size distribution and stability of the nanocomposites were determined using dynamic light scattering (DLS) and zeta

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

• carboxylic acid dispersions Color change In the presence of light, the majority of the nanoceria dispersions changed color from light yellow to colorless (attributed to Ce4+ reduction to Ce3+) [47]. Nanoceria stored in the dark did not change color and remained light yellow. Dynamic light scattering (DLS

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

• constraint, the model adopts the form of a free particle with an s-dependent mass. Recalling the conservation of energy, the formal integration of the Lagrangian in Equation 3 is trivial. Dynamic path To allow for a dynamical rotational degree of freedom ϑ for the path, we now introduce the actual angle ϕ of

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

• ][39] or fluorescence enhancement (“turn-on”) mechanisms [44][45] form the foundation of the majority of luminescent sensors. Static quenching and dynamic quenching are the two basic categories under which luminescence quenching is classified. Dynamic quenching, which is described by the Stern–Volmer

• Stern–Volmer dynamic quenching constant. The concentration of the quencher will have a linear relationship with the plot of F0/F vs [C]. If more than one kind of quenching mechanism, such as dynamic quenching and static quenching, is involved in the process, the plot can shift away from linearity and

• significantly influenced by the system temperature, concentration of analyte, and viscosity. When the temperature increases, the Stern–Volmer quenching constant (Ksv) values for the dynamic mechanism increase, whereas for the static mechanism, they decrease. This is consistent with the report of Sheta and co

Titania nanoparticles for photocatalytic degradation of ethanol under simulated solar light

• Evghenii Goncearenco,
• Iuliana P. Morjan,
• Claudiu Teodor Fleaca,
• Florian Dumitrache,
• Elena Dutu,
• Monica Scarisoreanu,
• Valentin Serban Teodorescu,
• Alexandra Sandulescu,
• Crina Anastasescu and
• Ioan Balint

Beilstein J. Nanotechnol. 2023, 14, 616–630, doi:10.3762/bjnano.14.51

• detector (TCD, Buck Scientific, model 910). The total time of a photocatalytic test was 180 min. The photoreactor works thus under static conditions, which differs from the dynamic conditions used by other researchers where a continuous flow of ethanol vapors (mixed with water vapors) was employed via

Suspension feeding in Copepoda (Crustacea) – a numerical model of setae acting in concert

• Alexander E. Filippov,
• Wencke Krings and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 603–615, doi:10.3762/bjnano.14.50

• mechanical property gradients, the mechanical behavior and the adhesion of setae, and the feeding efficiency of the system. In this context, we set-up a simple dynamic numerical model that takes all of these parameters into account and describes the interaction with food particles and their delivery into the

• system containing short and long setae. The results are presented in Figure 7. It is important to note that the angle ϕmin = −0.5π (here the basic segments run parallel to the surface z = 0) yields worse results than the optimal angle ϕmin = −0.4π. The dynamic behavior of the systems with different

• , Massachusetts, USA). Our discrete numerical model describes the dynamics of two pairs of initially parallel aligned elastic crests, resembling the maxillae 1 and 2. The conceptual structure of the model is depicted in Figure 10. The dynamic behavior of the model can be found in the movie in Supporting

Transferability of interatomic potentials for silicene

• Marcin Maździarz

Beilstein J. Nanotechnol. 2023, 14, 574–585, doi:10.3762/bjnano.14.48

• (TDS), honeycomb dumbbell (HDS), and large honeycomb dumbbell (LHDS) silicene [8]. There are still doubts about their dynamic stability. For example, for a flat phase, the negative ZO phonon mode could be removed by the selection of an appropriate substrate [3][9]. The ability of potentials for 3D

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

• of the field-free point is obtained for assemblies with different nanoparticle size distributions. The results obtained seem to be helpful for the development of a promising joint application of magnetic nanoparticle imaging and magnetic hyperthermia. Keywords: dynamic hysteresis loop; magnetic

• environment, except for a certain area near the field-free point (FFP). This will allow one to localize the heat release in the tumor area with millimeter accuracy. The search for optimal assemblies for joint MH-MPI therapy is an urgent task in this research area. Experimental measurements of dynamic

• combined action of ac and dc magnetic fields is studied using a numerical simulation based on the solution of the stochastic Landau–Lifshitz equation [17][20][22][23][26]. The SAR of a randomly oriented assembly is calculated in terms of the area of the dynamic hysteresis loop according to the well-known

The steep road to nonviral nanomedicines: Frequent challenges and culprits in designing nanoparticles for gene therapy

• Yao Yao,
• Yeongun Ko,
• Grant Grasman,
• Jeffery E. Raymond and
• Joerg Lahann

Beilstein J. Nanotechnol. 2023, 14, 351–361, doi:10.3762/bjnano.14.30

• , specifically for dose/particle calculations. Lastly, a volume or mass distribution should be presented. Dynamic light scattering (DLS) is often be used for the inspection of aqueous suspensions with results bedeviled by the normal constraints of DLS and ensemble detection [64]. Both disc centrifugation and

Polymer nanoparticles from low-energy nanoemulsions for biomedical applications

• Santiago Grijalvo and
• Carlos Rodriguez-Abreu

Beilstein J. Nanotechnol. 2023, 14, 339–350, doi:10.3762/bjnano.14.29

• diameter dE = 50 ± 12 nm (estimated by cryo-TEM), whereas the diameter of the derived PLGA nanoparticles (dP) was 25 ± 7 nm as estimated from TEM [24], which gives a dP/dE ratio of 0.5. Higher dP/dE ratios were found by dynamic light scattering, especially at low polymer concentrations (note that the

• decreased with O/S ratio. The hydrodynamic diameter of the nanoemulsion droplets as measured by dynamic light scattering (DLS) was ca. 200 nm. It should be pointed out that ethyl acetate is a polar oil, and that the ethyl acetate/water interfacial tension is low (6.8 mN/m [41]). Usually, the excess

Overview of mechanism and consequences of endothelial leakiness caused by metal and polymeric nanoparticles

• Magdalena Lasak and
• Karol Ciepluch

Beilstein J. Nanotechnol. 2023, 14, 329–338, doi:10.3762/bjnano.14.28

• junctions, which are a cluster of transmembrane channels located throughout the vascular system. The intercellular junctions between endothelial cells play an important role in maintaining the monolayer integrity, but they also connect cells in a dynamic and communicative manner [13][14]. Any change in

Biocatalytic synthesis and ordered self-assembly of silica nanoparticles via a silica-binding peptide

• Mustafa Gungormus

Beilstein J. Nanotechnol. 2023, 14, 280–290, doi:10.3762/bjnano.14.25

• combination with NH3. The reaction kinetics were monitored via measuring the optical density (OD) with UV–vis spectroscopy and the conversion of substrate via gas chromatography coupled with mass spectroscopy (GC–MS). Size and net surface charge distribution of the particles were determined with dynamic light

Nanotechnology – a robust tool for fighting the challenges of drug resistance in non-small cell lung cancer

• Filip Gorachinov,
• Fatima Mraiche,
• Diala Alhaj Moustafa,
• Ola Hishari,
• Yomna Ismail,
• Jensa Joseph,
• Maja Simonoska Crcarevska,
• Marija Glavas Dodov,
• Nikola Geskovski and
• Katerina Goracinova

Beilstein J. Nanotechnol. 2023, 14, 240–261, doi:10.3762/bjnano.14.23

• toxicological profiles [134]. A systematic approach in synthesizing statistical copolymer libraries, fine-tuning nanoparticle biointeractions, and polymer bioresponsiveness, hand in hand with cell culture experiments for fast screening and dynamic cell culture models, may greatly improve the successful outcomes

Spin dynamics in superconductor/ferromagnetic insulator hybrid structures with precessing magnetization

• Yaroslav V. Turkin and
• Nataliya Pugach

Beilstein J. Nanotechnol. 2023, 14, 233–239, doi:10.3762/bjnano.14.22

• ][19] frameworks. However, the main subject of these works is the magnetic excitation spectrum in hybrid structures. Most of the works ignore the dynamics of nonuniform distributions of induced magnetization and spin current inside the superconducting film, which can be called the “dynamic inverse

• superconductor/ferromagnetic insulator hybrid structures was applied to describe nonstationary phenomena, such as generation of spin transfer torques, nonuniform thermoelectric effects, and domain wall movement. The theoretical description of the dynamic proximity effect is the more complex task because of the

• in [18][19]. In these works, calculations based on Usadel equations combined with adiabatic, nonstationary boundary conditions were made. We show that the adiabatic approximation is useful in a wide range of magnetization precession frequencies. The main goal of our theory is to describe the dynamic

Cyclodextrins as eminent constituents in nanoarchitectonics for drug delivery systems

• Makoto Komiyama

Beilstein J. Nanotechnol. 2023, 14, 218–232, doi:10.3762/bjnano.14.21

• molecular structure of nanometer size, (2) the easy chemical modification to introduce functional groups, and (3) the formation of dynamic inclusion complexes with various guests in water. With the use of photoirradiation, drugs are released from cyclodextrin-based nanoarchitectures at designated timing

• nanoarchitectures is greatly facilitated by three important features of CyDs, namely (1) the preorganized three-dimensional molecular structure of nanometer-size, (2) the easy chemical modification to introduce functional groups, and (3) the formation of dynamic inclusion complexes with various guests in water. The

• are presented with the emphasis on the three features of CyDs in Figure 1. First, the photoinduced delivery of chemical drugs by CyD-based carriers is described (section 2). The dynamic features of CyD inclusion complexes are essential here since minor changes of the molecular structure of

Characterisation of a micrometer-scale active plasmonic element by means of complementary computational and experimental methods

• Ciarán Barron,
• Giulia Di Fazio,
• Samuel Kenny,
• Silas O’Toole,
• Robin O’Reilly and
• Dominic Zerulla

Beilstein J. Nanotechnol. 2023, 14, 110–122, doi:10.3762/bjnano.14.12

• computational methods to characterise the response of this system. First, an enhanced surface plasmon resonance experiment in a classical Kretschmann configuration is used to measure the changes in the reflectivity induced by an alternating electric current. A lock-in amplifier is used to extract the dynamic

• software COMSOL Multiphysics has been used to predict and confirm the dynamic temperature distribution and the optical response of the system. Experimental The manufacturing of the active plasmonic elements employed in the present work is detailed in [5]. At first, a 48 ± 2 nm film of silver is deposited

• the conditions in the above SPR measurements as closely as possible. The Cypher-S AFM is capable of detecting dynamic changes in height of the sample down to the sub-picometer scale. Scans were performed at multiple current densities to demonstrate the differences in temperature distribution

Frontiers of nanoelectronics: intrinsic Josephson effect and prospects of superconducting spintronics

• Anatolie S. Sidorenko,
• Horst Hahn and
• Vladimir Krasnov

Beilstein J. Nanotechnol. 2023, 14, 79–82, doi:10.3762/bjnano.14.9

• a very high responsivity at 77 K (up to 9 kV/W), low noise equivalent power (NEP) of 3 × 10−13 W/Hz(1/2), and with a wide power dynamic range equal to 1 × 106 [18]. Integrating an aluminum Josephson junction, with a size of a few micrometers, operating as a single photon counter in the microwave

Two-step single-reactor synthesis of oleic acid- or undecylenic acid-stabilized magnetic nanoparticles by thermal decomposition

• Mykhailo Nahorniak,
• Pamela Pasetto,
• Jean-Marc Greneche,
• Volodymyr Samaryk,
• Sandy Auguste,
• Anthony Rousseau,
• Nataliya Nosova and
• Serhii Varvarenko

Beilstein J. Nanotechnol. 2023, 14, 11–22, doi:10.3762/bjnano.14.2

• , and composition via several techniques, such as transmission electron microscopy, dynamic light scattering, thermogravimetric analysis, Fourier-transform infrared spectroscopy/attenuated total reflectance, 57Fe Mössbauer spectroscopy, and X-ray diffraction. The effect of unsaturated oleic (OA) and

• diameter, X-ray diffraction, transmission electron microscopy, and dynamic light scattering (Malvern Zetasizer Nano S, Palaiseau, France) were used. Transmission electron microscopy observations were conducted using a JEOL JEM 2100 HR microscope (Croissy Sur Seine, France) equipped with a LaB6 source, and

• ThermoScientific iD5 ATR Nicolet iS5 IR spectrometer (Waltham, MA USA) on a diamond crystal and Spectrum Two FTIR Spectrometer with Universal ATR (PerkinElmer, USA). The thermogravimetric measurements were carried out using a TA Instrument, Hi-Res-Dynamic TGA Q 500 (New Castle, USA) in a nitrogen atmosphere and in

Atmospheric water harvesting using functionalized carbon nanocones

• Fernanda R. Leivas and
• Marcia C. Barbosa

Beilstein J. Nanotechnol. 2023, 14, 1–10, doi:10.3762/bjnano.14.1

• thermostat, but the temperature varies from 800 to 300 K in a dynamic process every 10000 temporal steps. The blue region, thermostat 2, maintains a constant temperature of 300 K during the entire simulation. The variation of temperature in thermostat 1 is responsible for the condensation at reservoir 2. The

Observation of collective excitation of surface plasmon resonances in large Josephson junction arrays

• Roger Cattaneo,
• Mikhail A. Galin and
• Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2022, 13, 1578–1588, doi:10.3762/bjnano.13.132

• steps appear via rectification of the cavity-mode-induced MW current in the electrodes and the amplitude of the rectified current is proportional to Ic of the JJs [38]. Dynamic states with different number of active junctions We want to emphasize that the discussed cavity resonances represent a

• and Figure 1d. However, application of a small magnetic field introduces a spread in critical currents, as can be seen from Figure 2b. In combination with the hysteresis in the I–V characteristics, this makes it possible to reach a large variety of dynamic states with different numbers of active JJs

• variety of dynamic states with different numbers of active junctions in the oscillating resistive state. This allowed for a detailed analysis of the collective phenomena that take place in the arrays. We reported a gradual development of cavity mode resonances in the arrays upon sequential switching of

Structural studies and selected physical investigations of LiCoO₂ obtained by combustion synthesis

• Monika Michalska,
• Paweł Ławniczak,
• Tomasz Strachowski,
• Adam Ostrowski and
• Waldemar Bednarski

Beilstein J. Nanotechnol. 2022, 13, 1473–1482, doi:10.3762/bjnano.13.121

• dynamic Jahn–Teller effect. Below about 20 K the dynamic effect becomes static, and the spectra show a clear anisotropy due to static Jahn–Teller distortion. Experimental spectra obtained at 5 K (Figure 7) show that the EPR spectra for each sample consist of two different nickel complexes. From the

Facile preparation of Au- and BODIPY-grafted lipid nanoparticles for synergized photothermal therapy

• Yuran Wang,
• Xudong Li,
• Haijun Chen and
• Yu Gao

Beilstein J. Nanotechnol. 2022, 13, 1432–1444, doi:10.3762/bjnano.13.118

• aqueous suspension. The mixture was vortexed for 30 s and further sonicated for 10 min to obtain AB-LNPs. Characterization of AB-LNPs The size distributions and zeta potentials were measured using a dynamic light scattering (DLS) technique on Malvern Zetasizer (Malvern Instruments Ltd., UK). Ultraviolet

Orally administered docetaxel-loaded chitosan-decorated cationic PLGA nanoparticles for intestinal tumors: formulation, comprehensive in vitro characterization, and release kinetics

• Sedat Ünal,
• Osman Doğan and
• Yeşim Aktaş

Beilstein J. Nanotechnol. 2022, 13, 1393–1407, doi:10.3762/bjnano.13.115

• efficiently encapsulated in the NPs. In addition, SEM micrographs were interpreted to be in accordance with the mean particle size data measured with the dynamic light scattering. Determination of drug loading capacity The rate of drug encapsulation is one of the important characterization parameters that

• phase for the blank PLGA nanoparticles. In vitro characterization of the nanoparticles Mean particle size and surface charge Mean particle size (nm), PDI, and zeta potential (mV) of the NPs were investigated by dynamic light scattering (DLS; Malvern Zetasizer Nano ZS series, UK) with a disposable

Supramolecular assembly of pentamidine and polymeric cyclodextrin bimetallic core–shell nanoarchitectures

• Alexandru-Milentie Hada,
• Nina Burduja,
• Marco Abbate,
• Claudio Stagno,
• Guy Caljon,
• Louis Maes,
• Nicola Micale,
• Massimiliano Cordaro,
• Angela Scala,
• Antonino Mazzaglia and
• Anna Piperno

Beilstein J. Nanotechnol. 2022, 13, 1361–1369, doi:10.3762/bjnano.13.112

• -inflammatory, and anticancer). The physicochemical characterization of the supramolecular assembly (nanoGSP) in terms of size and colloidal stability was investigated by complementary spectroscopic techniques, such as UV–vis, ζ-potential, and dynamic light scattering (DLS). Furthermore, the role of PolyCD

• -potential), and dynamic light scattering (DLS). Experimental data suggested a multiple set of interactions between Pent and nanoGS that involves mainly the CD cavities. The biological profile of nanoG, nanoGS, and nanoGSP has been evaluated in terms of antileishmanial activity and cytotoxicity by in vitro

A super-oscillatory step-zoom metalens for visible light

• Yi Zhou,
• Chao Yan,
• Peng Tian,
• Zhu Li,
• Yu He,
• Bin Fan,
• Zhiyong Wang,
• Yao Deng and
• Dongliang Tang

Beilstein J. Nanotechnol. 2022, 13, 1220–1227, doi:10.3762/bjnano.13.101

• materials still have issues regarding dynamic tunability and inflexibility. Therefore, it is vital to develop a flexible and tunable modulation approach for super-oscillatory lenses. In this paper, we propose a super-oscillatory step-zoom lens based on the geometric phase principle, which can switch between