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Journals Beilstein Journal of Nanotechn...

Beilstein Journal of Nanotechnology

https://read.qxmd.com/read/38505812/investigating-structural-and-electronic-properties-of-neutral-zinc-clusters-a-g-0-w-0-and-g-0-w-0-%C3%B0-0-1-benchmark
#1
JOURNAL ARTICLE
Sunila Bakhsh, Muhammad Khalid, Sameen Aslam, Muhammad Sohail, Muhammad Aamir Iqbal, Mujtaba Ikram, Kareem Morsy
The structural and electronic properties of zinc clusters (Zn n ) for a size range of n = 2-15 are studied using density functional theory. The particle swarm optimization algorithm is employed to search the structure and to determine the ground-state structure of the neutral Zn clusters. The structural motifs are optimized using the density functional theory approach to ensure that the structures are fully relaxed. Results are compared with the literature to validate the accuracy of the prediction method. The binding energy per cluster is obtained and compared with the reported literature to study the stability of these structures...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38505811/exploring-the-relationships-between-physiochemical-properties-of-nanoparticles-and-cell-damage-to-combat-cancer-growth-using-simple-periodic-table-based-descriptors
#2
JOURNAL ARTICLE
Joyita Roy, Kunal Roy
A comprehensive knowledge of the physical and chemical properties of nanomaterials (NMs) is necessary to design them effectively for regulated use. Although NMs are utilized in therapeutics, their cytotoxicity has attracted great attention. Nanoscale quantitative structure-property relationship (nano-QSPR) models can help in understanding the relationship between NMs and the biological environment and provide new ways for modeling the structural properties and bio-toxic effects of NMs. The goal of the study is to construct fully validated property-based models to extract relevant features for estimating and influencing the zeta potential and obtaining the toxicity profile regarding cell damage in the treatment of cancer cells...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38476324/determining-by-raman-spectroscopy-the-average-thickness-and-n-layer-specific-surface-coverages-of-mos-2-thin-films-with-domains-much-smaller-than-the-laser-spot-size
#3
JOURNAL ARTICLE
Felipe Wasem Klein, Jean-Roch Huntzinger, Vincent Astié, Damien Voiry, Romain Parret, Houssine Makhlouf, Sandrine Juillaguet, Jean-Manuel Decams, Sylvie Contreras, Périne Landois, Ahmed-Azmi Zahab, Jean-Louis Sauvajol, Matthieu Paillet
Raman spectroscopy is a widely used technique to characterize nanomaterials because of its convenience, non-destructiveness, and sensitivity to materials change. The primary purpose of this work is to determine via Raman spectroscopy the average thickness of MoS2 thin films synthesized by direct liquid injection pulsed-pressure chemical vapor deposition (DLI-PP-CVD). Such samples are constituted of nanoflakes (with a lateral size of typically 50 nm, i.e., well below the laser spot size), with possibly a distribution of thicknesses and twist angles between stacked layers...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38440321/ultrasensitive-and-ultrastretchable-metal-crack-strain-sensor-based-on-helical-polydimethylsiloxane
#4
JOURNAL ARTICLE
Shangbi Chen, Dewen Liu, Weiwei Chen, Huajiang Chen, Jiawei Li, Jinfang Wang
The majority of crack sensors do not offer simultaneously both a significant stretchability and an ultrahigh sensitivity. In this study, we present a straightforward and cost-effective approach to fabricate metal crack sensors that exhibit exceptional performance in terms of ultrahigh sensitivity and ultrahigh stretchability. This is achieved by incorporating a helical structure into the substrate through a modeling process and, subsequently, depositing a thin film of gold onto the polydimethylsiloxane substrate via sputter deposition...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38440320/vinorelbine-loaded-multifunctional-magnetic-nanoparticles-as-anticancer-drug-delivery-systems-synthesis-characterization-and-in-vitro-release-study
#5
JOURNAL ARTICLE
Zeynep Özcan, Afife Binnaz Hazar Yoruç
In this study, a multifunctional therapeutic agent combining chemotherapy and photothermal therapy on a single platform has been developed in the form of vinorelbine-loaded polydopamine-coated iron oxide nanoparticles. Vinorelbine (VNB) is loaded on the surface of iron oxide nanoparticles produced by a solvothermal technique after coating with polydopamine (PDA) with varying weight ratios as a result of dopamine polymerisation and covalent bonding of thiol-polyethylene glycol (SH-PEG). The VNB/PDA/Fe3 O4 nanoparticles have a saturation magnetisation value of 60...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38379932/ion-beam-processing-of-dna-origami-nanostructures
#6
JOURNAL ARTICLE
Leo Sala, Agnes Zerolová, Violaine Vizcaino, Alain Mery, Alicja Domaracka, Hermann Rothard, Philippe Boduch, Dominik Pinkas, Jaroslav Kocišek
DNA origami nanostructures are emerging as a bottom-up nanopatterning approach. Direct combination of this approach with top-down nanotechnology, such as ion beams, has not been considered because of the soft nature of the DNA material. Here we demonstrate that the shape of 2D DNA origami nanostructures deposited on Si substrates is well preserved upon irradiation by ion beams, modeling ion implantation, lithography, and sputtering conditions. Structural changes in 2D DNA origami nanostructures deposited on Si are analyzed using AFM imaging...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38379931/multiscale-modelling-of-biomolecular-corona-formation-on-metallic-surfaces
#7
JOURNAL ARTICLE
Parinaz Mosaddeghi Amini, Ian Rouse, Julia Subbotina, Vladimir Lobaskin
In the realm of food industry, the choice of non-consumable materials used plays a crucial role in ensuring consumer safety and product quality. Aluminum is widely used in food packaging and food processing applications, including dairy products. However, the interaction between aluminum and milk content requires further investigation to understand its implications. In this work, we present the results of multiscale modelling of the interaction between various surfaces, that is (100), (110), and (111), of fcc aluminum with the most abundant milk proteins and lactose...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38379930/design-fabrication-and-characterization-of-kinetic-inductive-force-sensors-for-scanning-probe-applications
#8
JOURNAL ARTICLE
August K Roos, Ermes Scarano, Elisabet K Arvidsson, Erik Holmgren, David B Haviland
We describe a transducer for low-temperature atomic force microscopy based on electromechanical coupling due to a strain-dependent kinetic inductance of a superconducting nanowire. The force sensor is a bending triangular plate (cantilever) whose deflection is measured via a shift in the resonant frequency of a high- Q superconducting microwave resonator at 4.5 GHz. We present design simulations including mechanical finite-element modeling of surface strain and electromagnetic simulations of meandering nanowires with large kinetic inductance...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38379929/exploring-disorder-correlations-in-superconducting-systems-spectroscopic-insights-and-matrix-element-effects
#9
JOURNAL ARTICLE
Vyacheslav D Neverov, Alexander E Lukyanov, Andrey V Krasavin, Alexei Vagov, Boris G Lvov, Mihail D Croitoru
Understanding the intricate interplay between disorder and superconductivity has become a key area of research in condensed matter physics, with profound implications for materials science. Recent studies have shown that spatial correlations of disorder potential can improve superconductivity, prompting a re-evaluation of some theoretical models. This paper explores the influence of disorder correlations on the fundamental properties of superconducting systems, going beyond the traditional assumption of spatially uncorrelated disorder...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38379928/quantitative-wear-evaluation-of-tips-based-on-sharp-structures
#10
JOURNAL ARTICLE
Ke Xu, Houwen Leng
To comprehensively study the influence of atomic force microscopy (AFM) scanning parameters on tip wear, a tip wear assessment method based on sharp structures is proposed. This research explored the wear of AFM tips during tapping mode and examined the effects of scanning parameters on estimated tip diameter and surface roughness. The experiment results show that the non-destructive method for measuring tip morphology is highly repeatable. Additionally, a set of principles for optimizing scanning parameters has been proposed...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38352720/graphene-removal-by-water-assisted-focused-electron-beam-induced-etching-unveiling-the-dose-and-dwell-time-impact-on-the-etch-profile-and-topographical-changes-in-sio-2-substrates
#11
JOURNAL ARTICLE
Aleksandra Szkudlarek, Jan M Michalik, Inés Serrano-Esparza, Zdeněk Nováček, Veronika Novotná, Piotr Ozga, Czesław Kapusta, José María De Teresa
Graphene is one of the most extensively studied 2D materials, exhibiting extraordinary mechanical and electronic properties. Although many years have passed since its discovery, manipulating single graphene layers is still challenging using standard resist-based lithography techniques. Recently, it has been shown that it is possible to etch graphene directly in water-assisted processes using the so-called focused electron-beam-induced etching (FEBIE), with a spatial resolution of ten nanometers. Nanopatterning graphene with such a method in one single step and without using a physical mask or resist is a very appealing approach...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38352719/ferromagnetic-resonance-spectra-of-linear-magnetosome-chains
#12
JOURNAL ARTICLE
Elizaveta M Gubanova, Nikolai A Usov
The ferromagnetic resonance (FMR) spectra of oriented and non-oriented assemblies of linear magnetosome chains are calculated by solving the stochastic Landau-Lifshitz equation. The dependence of the shape of the FMR spectrum of a dilute assembly of chains on the particle diameter, the number of particles in a chain, the distance between the centers of neighboring particles, the mutual orientation of the cubic axes of particle anisotropy, and the value of the magnetic damping constant is studied. It is shown that FMR spectra of non-oriented chain assemblies depend on the average particle diameter at a fixed thickness of the lipid magnetosome membrane, as well as on the value of the magnetic damping constant...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38352718/nanocarrier-systems-loaded-with-ir780-iron-oxide-nanoparticles-and-chlorambucil-for-cancer-theragnostics
#13
JOURNAL ARTICLE
Phuong-Thao Dang-Luong, Hong-Phuc Nguyen, Loc Le-Tuan, Xuan-Thang Cao, Vy Tran-Anh, Hieu Vu Quang
Theragnostics has become a popular term nowadays, since it enables both diagnosis and therapy at the same time while only using one carrier platform. Therefore, formulating a nanocarrier system that could serve as theragnostic agent by using simple techniques would be an advantage during production. In this project, we aimed to develop a nanocarrier that can be loaded with the chemotherapeutic medication chlorambucil and magnetic resonance imaging agents (e.g., iron oxide nanoparticles and near-infrared fluorophore IR780) for theragnostics...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38352717/modification-of-graphene-oxide-and-its-effect-on-properties-of-natural-rubber-graphene-oxide-nanocomposites
#14
JOURNAL ARTICLE
Nghiem Thi Thuong, Le Dinh Quang, Vu Quoc Cuong, Cao Hong Ha, Nguyen Ba Lam, Seiichi Kawahara
Modification of graphene oxide (GO) by vinyltriethoxysilane (VTES) was investigated to study the effect of silanized GO on radical graft copolymerization of GO onto deproteinized natural rubber (DPNR). The modified GO, GO-VTES (a and b), was characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy, contact angle, thermal gravimetric analysis, and scanning electron microscopy. The XRD results showed the appearance of an amorphous region of silica particles at a diffraction angle of 22°...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38317826/cdse-zns-quantum-dots-as-a-booster-in-the-active-layer-of-distributed-ternary-organic-photovoltaics
#15
JOURNAL ARTICLE
Gabriela Lewińska, Piotr Jeleń, Zofia Kucia, Maciej Sitarz, Łukasz Walczak, Bartłomiej Szafraniak, Jerzy Sanetra, Konstanty W Marszalek
Organic solar cells are a promising candidate for practical use because of their low material cost and simple production procedures. The challenge is selecting materials with the right properties and how they interrelate in the context of manufacturing the device. This paper presents studies on CdSe/ZnS nanodots as dopants in a polymer-fullerene matrix for application in organic solar cells. An assembly of poly(3-hexylthiophene-2,5-diyl) and 6,6-phenyl-C71-butyric acid methyl ester was used as the active reference layer...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38317825/enhanced-feedback-performance-in-off-resonance-afm-modes-through-pulse-train-sampling
#16
JOURNAL ARTICLE
Mustafa Kangül, Navid Asmari, Santiago H Andany, Marcos Penedo, Georg E Fantner
Dynamic atomic force microscopy (AFM) modes that operate at frequencies far away from the resonance frequency of the cantilever (off-resonance tapping (ORT) modes) can provide high-resolution imaging of a wide range of sample types, including biological samples, soft polymers, and hard materials. These modes offer precise and stable control of vertical force, as well as reduced lateral force. Simultaneously, they enable mechanical property mapping of the sample. However, ORT modes have an intrinsic drawback: a low scan speed due to the limited ORT rate, generally in the low-kilohertz range...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38317824/in-situ-optical-sub-wavelength-thickness-control-of-porous-anodic-aluminum-oxide
#17
JOURNAL ARTICLE
Aleksandrs Dutovs, Raimonds Popļausks, Oskars Putāns, Vladislavs Perkanuks, Aušrinė Jurkevičiūtė, Tomas Tamulevičius, Uldis Malinovskis, Iryna Olyshevets, Donats Erts, Juris Prikulis
Porous anodic aluminum oxide (PAAO), sometimes referred to as nanoporous anodic alumina, serves as a cost-effective template for nanofabrication in many fields of science and engineering. However, production of ultrathin PAAO membranes with precise thickness in the optical sub-wavelength range remains challenging because of difficulties regarding process control at the initial stage of anodic oxidation. In this study, we demonstrate a technique for consistently manufacturing PAAO with the targeted thickness...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38293272/assessing-phytotoxicity-and-tolerance-levels-of-zno-nanoparticles-on-raphanus-sativus-implications-for-widespread-adoptions
#18
JOURNAL ARTICLE
Pathirannahalage Sahan Samuditha, Nadeesh Madusanka Adassooriya, Nazeera Salim
The escalating release of zinc oxide nanoparticles (ZnO NPs) into the environment poses a substantial threat, potentially leading to increased concentrations of zinc (Zn) in the soil and subsequent phytotoxic effects. This study aimed to assess the effects of ZnO NPs on Raphanus sativus ( R. sativus ) concerning its tolerance levels, toxicity, and accumulation. ZnO NPs were synthesized by the wet chemical method and characterized by powder X-ray diffraction (PXRD), Fourier-transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV-vis) spectroscopy, dynamic light scattering (DLS), and scanning electron microscopy (SEM)...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38264063/study-of-the-reusability-and-stability-of-nylon-nanofibres-as-an-antibody-immobilisation-surface
#19
JOURNAL ARTICLE
Inés Peraile, Matilde Gil-García, Laura González-López, Nushin A Dabbagh-Escalante, Juan C Cabria-Ramos, Paloma Lorenzo-Lozano
In the case of a biological threat, early, rapid, and specific detection is critical. In addition, ease of handling, use in the field, and low-cost production are important considerations. Immunological devices are able to respond to these needs. In the design of these immunological devices, surface antibody immobilisation is crucial. Nylon nanofibres have been described as a very good option because they allow for an increase in the surface-to-volume ratio, leading to an increase in immunocapture efficiency...
2024: Beilstein Journal of Nanotechnology
https://read.qxmd.com/read/38264062/development-and-characterization-of-potential-larvicidal-nanoemulsions-against-aedes-aegypti
#20
JOURNAL ARTICLE
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, Marlus Chorilli
Plant-based insecticides offer advantages such as negligible residual effects, reduced risks to both humans and the environment, and immunity to resistance issues that plague conventional chemicals. However, the practical use of monoterpenes in insect control has been hampered by challenges including their poor solubility and stability in aqueous environments. In recent years, the application of nanotechnology-based formulations, specifically nanoemulsions, has emerged as a prospective strategy to surmount these obstacles...
2024: Beilstein Journal of Nanotechnology
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