Development and characterization of potential larvicidal nanoemulsions against Aedes aegypti

• Jonatas L. Duarte,
• Leonardo Delello Di Filippo,
• Anna Eliza Maciel de Faria Mota Oliveira,
• Rafael Miguel Sábio,
• Gabriel Davi Marena,
• Tais Maria Bauab,
• Cristiane Duque,
• Vincent Corbel and
• Marlus Chorilli

Beilstein J. Nanotechnol. 2024, 15, 104–114, doi:10.3762/bjnano.15.10

• 10% bovine fetal serum and 100 μg/mL of penicillin G/streptomycin. Maintained at 37 °C with 5% CO2, the cells were grown until they reached a subconfluent density. To detach the cells, a 5 min trypsin treatment with TrypLE™ Express at 37 °C was performed, followed by inactivation using 0.3 mg/mL

• density at 570 nm was measured using a microplate reader. Cell viability was determined by comparing the absorbance of each product concentration to untreated cells, with the negative control (DMEM) representing 100% cellular metabolism. The analysis utilized average values. In vivo toxicity evaluation

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

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

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

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

• an environment of high ion concentration capable of interacting with any charge density group, disrupting the hydrophobic bonds between protein A/G and antibody and the hydrogen bonds between protein A/G and nylon, as well as the bare nylon nanofibres. Results of stability study As this system is

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

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

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

• positively charged quaternary ammonium groups of BBR, increasing the charge density of the blend solution. As the higher charged solution jet, the elongation force imposed on the jet was higher, forming smaller fibers [3][34]. Interestingly, although the same amount of BBR drug was incorporated in the BBR

Influence of conductive carbon and MnCo₂O₄ on morphological and electrical properties of hydrogels for electrochemical energy conversion

• Sylwia Pawłowska,
• Karolina Cysewska,
• Yasamin Ziai,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2024, 15, 57–70, doi:10.3762/bjnano.15.6

• tissues. The amount of water absorbed depends on factors such as the structure of the hydrogel, the composition of the precursor hydrogel solution, the cross-link density, and the technique of its synthesis. The simple reaction of one or more monomers is used for the production of this kind of material [1

• conduction paths, as manifested by a higher yield of catalyst particles. The potential required to drive a 10 mA/cm2 OER current density using the hydrogel with a higher amount of conductive particles compared to catalyst particles (MCO/cCB equal 1:7.5) is 1.73 V versus the reversible hydrogen electrode (RHE

• overpotentials at the standard current density value of 10 mA/cm2. Also, hydrogel samples with conductive carbon particles in their three-dimensional structure (Hgel-cCB 3x, Hgel-cCB 6x) and without MCO catalyst particles, showed almost flat polarization curves, which made it impossible to determine the

Measurements of dichroic bow-tie antenna arrays with integrated cold-electron bolometers using YBCO oscillators

• Leonid S. Revin,
• Dmitry A. Pimanov,
• Alexander V. Chiginev,
• Anton V. Blagodatkin,
• Viktor O. Zbrozhek,
• Andrey V. Samartsev,
• Anastasia N. Orlova,
• Dmitry V. Masterov,
• Alexey E. Parafin,
• Victoria Yu. Safonova,
• Anna V. Gordeeva,
• Andrey L. Pankratov,
• Leonid S. Kuzmin,
• Anatolie S. Sidorenko,
• Silvia Masi and
• Paolo de Bernardis

Beilstein J. Nanotechnol. 2024, 15, 26–36, doi:10.3762/bjnano.15.3

• deposition of cerium dioxide CeO2 on the heated substrate as a buffer layer. The dimensions of the obtained Josephson junctions were 50 µm in length and 0.3 µm in thickness. At a temperature T ~ 2.7 K, the value of the critical current density was ~400 kA/cm2 with the ICRN product of ~1.6 mV. The junctions

Fluorescent bioinspired albumin/polydopamine nanoparticles and their interactions with Escherichia coli cells

• Eloïse Equy,
• Jordana Hirtzel,
• Sophie Hellé,
• Béatrice Heurtault,
• Eric Mathieu,
• Morgane Rabineau,
• Vincent Ball and
• Lydie Ploux

Beilstein J. Nanotechnol. 2023, 14, 1208–1224, doi:10.3762/bjnano.14.100

• after freeze-drying, mdry is the mass of the NP foam measured after freeze-drying, and ρPDA is the density of polydopamine (1.52 g·cm−3) [27]. where Cf is the final concentration after freeze-drying (mdry/V), is the initial concentration of dopamine (2 mg/mL), and is the initial concentration of BSA

• oxidation (Supporting Information File 1, Figure S2c). This may result from the conjugation and electronic density changes induced during the reaction with H2O2, during which hydroxy groups were oxidized into ketones. Eventually, the large majority of polydopamine functional groups are expected to be

Determination of the radii of coated and uncoated silicon AFM sharp tips using a height calibration standard grating and a nonlinear regression function

• Perawat Boonpuek and
• Jonathan R. Felts

Beilstein J. Nanotechnol. 2023, 14, 1200–1207, doi:10.3762/bjnano.14.99

• and the reduced modulus [14]. Real-time measurements of tip radii based on analysis of the power spectral density (PSD) of the topography of a surface of an ultrananocrystalline diamond were carried out to detect changes in tip radius during tapping mode scanning. For each scan, the frequency data in

A combined gas-phase dissociative ionization, dissociative electron attachment and deposition study on the potential FEBID precursor [Au(CH₃)₂Cl]₂

• Elif Bilgilisoy,
• Ali Kamali,
• Thomas Xaver Gentner,
• Gerd Ballmann,
• Sjoerd Harder,
• Hans-Peter Steinrück,
• Hubertus Marbach and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2023, 14, 1178–1199, doi:10.3762/bjnano.14.98

• formation of ethane CH3CH3 in this process, it results in threshold values of 9.67 and 10.29 eV at the respective levels of theory. Similar to the parent ion, the density functional theory (DFT) value agrees well with the experimental AE, while the DLPNO-CCSD(T)-TZVP value is ≈0.3 eV above its higher

Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study

• Nittiya Suwannasom,
• Netsai Sriaksorn,
• Chutamas Thepmalee,
• Krissana Khoothiam,
• Ausanai Prapan,
• Hans Bäumler and
• Chonthida Thephinlap

Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93

• FBS (10%) and penicillin/streptomycin (1%) at 37 °C in a CO2 incubator (95% relative humidity, 5% CO2). Huh-7, HDFB, and MMNK-1 cells were cultured in DMEM, and MCF-7 cells were cultured in RPMI cell culture medium. The cells were then seeded to grow 24 h prior to treatment at a density of 5 × 103

• water to remove unbound FITC and resuspended in PBS buffer for further use. MCF-7 cells were plated at a cell density of 2.5 × 104 cells per well in 8-well plates and allowed to attach for 24 h prior to treatment in a humidified incubator at 37 °C containing 5% CO2. Free CUR, HSA-MP, and CUR-HSA-MP

A bifunctional superconducting cell as flux qubit and neuron

• Dmitrii S. Pashin,
• Pavel V. Pikunov,
• Marina V. Bastrakova,
• Andrey E. Schegolev,
• Nikolay V. Klenov and
• Igor I. Soloviev

Beilstein J. Nanotechnol. 2023, 14, 1116–1126, doi:10.3762/bjnano.14.92

• adiabatic approximation, we can form the density matrix of the system in the instantaneous basis |ψn(t)⟩ as In the Born–Markov approximation, the dissipative dynamic of a quantum system is described by an adiabatic generalised equation for the density matrix [49]. In terms of the instantaneous basis in the

• Schrödinger representation, the dynamics of the parametron obey the Redfield equation: with and Lnm = |ψn(t)⟩⟨ψm(t)|⟨ψn(t)|φ|ψm(t)⟩. Here, we do not take into account the Lamb shift; is the renormalised coupling constant, where g is the density of bosonic modes, θ is the Heaviside function, and is the

Sulfur nanocomposites with insecticidal effect for the control of Bactericera cockerelli

• Lany S. Araujo-Yépez,
• Juan O. Tigrero-Salas,
• Vicente A. Delgado-Rodríguez,
• Vladimir A. Aguirre-Yela and
• Josué N. Villota-Méndez

Beilstein J. Nanotechnol. 2023, 14, 1106–1115, doi:10.3762/bjnano.14.91

• larger and smaller clusters, whose diameters can be estimated from the density function in Figure 3b. The formation process appears to be influenced by two key steps, namely nucleation and growth. They are crucial in the formation of nanoparticles and control various properties of the final product, such

• 292 nm for nanocomposites with rosemary oil at concentrations of 0.25%, 0.5%, and 0.75%, respectively (Figure 5). The density plots and the statistics (Table 1) show particle sizes without a particular distribution, and the increase in size and accumulation of the nanocomposites may be influenced by

• significance test. Results were expressed as means (± SD) of data and were considered significantly different at p < 0.05. The diameter probability density distribution of SNPs and NCMPs were estimated using the kernel density estimation methodology. Additionally, the descriptive statistics for each resulting

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

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

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

• displacements due to significant mismatch. Finally, analyzing the electronic properties, we demonstrate that Au/Ge systems have metallic character, but covalent-like bonding states between interfacial Ge and Au atoms are also present. Keywords: Au/Ge heterostructures; density functional theory; electronic

• separation (adhesion) were used. We applied first principles methods based on density functional theory (DFT) to study Au/Ge heterostructures with different interfacial plane orientations. The remainder of the paper is organized as follows. In the Methodology section the calculation details are given, and

• provide surface energy details for gold and germanium crystals and the charge density differences for the Au/Ge heterostructures. Methodology Interfacial energy and the work of separation in DFT calculations In contrast to the bulk phase of a material, the surface atoms have an incomplete set of neighbors

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

• latter configuration is used in the case of organic BHJ thin films (processed on transparent substrates, i.e., glass coated with indium thin oxide). The light intensity is adjusted using the laser power control and optical density filters. In the following, for each measurement, the optical power Popt

• lower density of non-percolating PC71BM clusters (delaying the SPV decay less). Imaging weak surface photovoltage signals: CsPbBr3 nanosheets on HOPG We have just seen that images of SPV magnitude and dynamics can be obtained with high spatial resolution. In this final section, we will show that DHe

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

• Kayhan Dağıdır and
• Kemal Bilen

Beilstein J. Nanotechnol. 2023, 14, 1041–1058, doi:10.3762/bjnano.14.86

• using pure oil. Moreover, density and dynamic viscosity of the nanolubricant samples used in the experiments were also measured, and their kinematic viscosity, which is an important parameter for lubricants, was calculated. It was determined that the kinematic viscosity continuously increased with

• viscosity, ν, was defined as the ratio of the dynamic viscosity to the density according to Equation 1. The density, ρ, of the nanolubricants was measured with the FPS2800 fluid property sensor. At the same time, the dynamic viscosity, µ, of the nanolubricants was measured using the FPS 2800 fluid property

• error analysis. The kinematic viscosity is calculated by Equation 1 with the help of the data obtained by measuring the density and dynamic viscosity values. Therefore, there is a need to determine the effect of uncertainties in the measured data of the calculated kinematic viscosity value. Thus, the

Recognition mechanisms of hemoglobin particles by monocytes – CD163 may just be one

• Jonathan-Gabriel Nimz,
• Pichayut Rerkshanandana,
• Chiraphat Kloypan,
• Ulrich Kalus,
• Saranya Chaiwaree,
• Axel Pruß,
• Radostina Georgieva,
• Yu Xiong and
• Hans Bäumler

Beilstein J. Nanotechnol. 2023, 14, 1028–1040, doi:10.3762/bjnano.14.85

• receptor density), a relatively wide spread of MFI values between the single runs was observed, while relations between the different samples and their respective reference sample within one run were rather stable. Data were therefore normalized by calculating each sample’s MFI, relative to its reference

A visible-light photodetector based on heterojunctions between CuO nanoparticles and ZnO nanorods

• Doan Nhat Giang,
• Nhat Minh Nguyen,
• Duc Anh Ngo,
• Thanh Trang Tran,
• Le Thai Duy,
• Cong Khanh Tran,
• Thi Thanh Van Tran,
• Phan Phuong Ha La and
• Vinh Quang Dang

Beilstein J. Nanotechnol. 2023, 14, 1018–1027, doi:10.3762/bjnano.14.84

• calculated by Equation 3 [50]: Here, Iph is the observed photocurrent, Idark represents the current observed under dark conditions, e is the electron charge, P is the illumination power density, and A is the channel area of the device (6 × 10−3 cm2). When the light density changes from 0.42 to 1.28 mW·cm−2

Fragmentation of metal(II) bis(acetylacetonate) complexes induced by slow electrons

• Janina Kopyra and
• Hassan Abdoul-Carime

Beilstein J. Nanotechnol. 2023, 14, 980–987, doi:10.3762/bjnano.14.81

• representing the ratio of the density of neutral precursors, must then be weighted with the (yet unknown) electron attachment cross sections to compare the experimentally measured ratio between CoL2− anions and MnL2− anions, via Nion = ε·Ne·Nneutral·σion·L, where ε is the ion detection efficiency, Ne and

• Nneutral are the number of colliding electrons (intensity of the electron current) and the density of the neutral precursor targets, respectively, L is the collision length, and σion is the cross section for the ion production. The experimental estimate of NCoL2−/NMnL2− from Figure 1 is around 15. This

Isolation of cubic Si₃P₄ in the form of nanocrystals

• Polina K. Nikiforova,
• Sergei S. Bubenov,
• Vadim B. Platonov,
• Andrey S. Kumskov,
• Nikolay N. Kononov,
• Tatyana A. Kuznetsova and
• Sergey G. Dorofeev

Beilstein J. Nanotechnol. 2023, 14, 971–979, doi:10.3762/bjnano.14.80

• , and for charge density at 240 Ry. IR spectra of Si NPs (a) upon etching and (b) before etching. XRD diffraction patterns of (a) Si, (b) SP900, (c) SP670, and (d) SP400. The asterisk denotes a peak from the copper admixture, as discussed in the main text. The vertical lines correspond to the

Ni, Co, Zn, and Cu metal-organic framework-based nanomaterials for electrochemical reduction of CO₂: A review

• Ha Huu Do and
• Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 904–911, doi:10.3762/bjnano.14.74

• -PMOF, and Zn-PMOF (P: polyoxometalate) for CO2 conversion. Co-PMOF displayed the highest catalytic activity for CO2RR among the investigated MOFs, as illustrated in Figure 3a,b. Moreover, this catalyst also showed remarkable durability, with the current density remaining stable after 35 h of testing

• . To gain insights into the reaction pathway and to provide explanations for the observed outcome, the research team employed computational science techniques. Density functional theory (DFT) calculations implied that Co-PMOF possessed the lowest total free energy leading to its superiority as a

• Cu-MOFs for CO2 reduction [47]. The study revealed that HKUST-1 showed the highest performance with a FE of 15.9% at a current density of 10 mA·cm−2 for methanol and ethanol formation. In particular, FE(methanol) is 5.6% and FE(ethanol) is 10.3%. This result can be explained by two reasons. On the

Green SPIONs as a novel highly selective treatment for leishmaniasis: an in vitro study against Leishmania amazonensis intracellular amastigotes

• Brunno R. F. Verçoza,
• Robson R. Bernardo,
• Luiz Augusto S. de Oliveira and
• Juliany C. F. Rodrigues

Beilstein J. Nanotechnol. 2023, 14, 893–903, doi:10.3762/bjnano.14.73

• To evaluate the effect of the SPIONs on the growth of L. amazonensis promastigotes, cell density experiments were initiated with an inoculum of 1.0 × 106 parasites/mL in M199 culture medium supplemented with 10% fetal bovine serum and cultivated at 25 °C. After 24 h of growth, different

• concentrations of SPIONs (1, 5, 10, 50, and 100 µg/mL) were added, and cells were cultured for 96 h. The cell density was calculated every 24 h by counting the number of cells in a Neubauer chamber using contrast-phase light microscopy. Besides, SPIONs were also evaluated against intracellular amastigotes, the

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

• Suyi Liu,
• Yasuo Norikane and
• Yoshihiro Kikkawa

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

• on HOPG has been reported in some cases [44][45][46], but the flat-on orientation is more favorable [47][48][49]. For an example of the flat-on orientation, density functional theory (DFT) calculations revealed the optimized geometry of n-dodecane adsorbed onto C96H24 as a HOPG model (Figure 2a). The

• ) as a reference can provide precise 2D structures, including intermolecular distances and molecular orientations. To study the adsorption of alkane on graphite, computational simulations such as molecular mechanics and DFT calculations with the local density approximation have been applied [48][49][53

• structures, possibly because (i) DBAs with long alkoxy chains yield enough adsorption energy even when two of the four alkoxy chains do not participate in the adsorption and (ii) at low concentrations, a decreased number of building blocks can form a porous honeycomb structure with low density while

N-Heterocyclic carbene-based gold etchants

• Robert B. Chevalier,
• Justin Pantano,
• Matthew K. Kiesewetter and
• Jason R. Dwyer

Beilstein J. Nanotechnol. 2023, 14, 865–871, doi:10.3762/bjnano.14.71

• a gold-coated token in a solution of 1 in DCM. There is evident loss of optical density accompanied by a transition from a reflective gold surface to one with more transmission, which allows for increased optical access to the underlying chromium adhesion layer. Figure S1 (Supporting Information

• controls, including as-supplied unexposed slides, in Figure S2 (Supporting Information File 1). Indeed, electron micrographs in Figure S3 (Supporting Information File 1) show no apparent loss of gold film density of any of 2–4 in toluene, although the low concentrations (approximately at the limit of

Biomimetics on the micro- and nanoscale – The 25th anniversary of the lotus effect

• Matthias Mail,
• Kerstin Koch,
• Thomas Speck,
• William M. Megill and
• Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 850–856, doi:10.3762/bjnano.14.69

• create the hairy structured surface on the polypropylene side. In the final step, the structured film is separated from the carrier. The authors were able to set the hair length and density with the usual industrial control variables of speed, temperature, and gap width. The obtained result was a very

• and the geometry of the setae with age and size of the animals. The authors find that the diameter of the fibres and their density in the toepad do not change with size in this species. The toepads scale isometrically with body size, and the setae get relatively shorter with body size. The scaling is

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

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

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

• ion bombardment. The Y axis is normalized to the density and given in a stacked representation. The intensity of the peaks describes the probability to find an atom at a given distance of a reference atom. Implantation depth of argon atoms for incidence angles of (a) 0°, (b) 30°, (c) 45°, (d) 60°, (e

Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies

• Giuliana Muraca,
• María Esperanza Ruiz,
• Rocío C. Gambaro,
• Sebastián Scioli-Montoto,
• María Laura Sbaraglini,
• Gisel Padula,
• José Sebastián Cisneros,
• Cecilia Yamil Chain,
• Vera A. Álvarez,
• Cristián Huck-Iriart,
• Guillermo R. Castro,
• María Belén Piñero,
• Matias Ildebrando Marchetto,
• Catalina Alba Soto,
• Germán A. Islan and
• Alan Talevi

Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66

• cells. Isolated myristyl myristate lipid was also tested against amastigotes, showing a reduced amastigote density at effective concentrations (Supporting Information File 1, Figure S1). Neither P188 nor GTCC-LQ displayed any effect against trypomastigotes or amastigotes up to 50 µM. Of note, the more