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Search for "interactions" in Full Text gives 1044 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Nanomedicines against Chagas disease: a critical review

  • Maria Jose Morilla,
  • Kajal Ghosal and
  • Eder Lilia Romero

Beilstein J. Nanotechnol. 2024, 15, 333–349, doi:10.3762/bjnano.15.30

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  • -II drugs with low solubility, or low or irregular bioavailability, and promoting adhesion to the gastrointestinal wall [95]. The small size of the crystals is associated with a large surface area, which increases interactions with the dissolving medium and accelerates the dissolution rate. The latest
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Published 27 Mar 2024

Vinorelbine-loaded multifunctional magnetic nanoparticles as anticancer drug delivery systems: synthesis, characterization, and in vitro release study

  • Zeynep Özcan and
  • Afife Binnaz Hazar Yoruç

Beilstein J. Nanotechnol. 2024, 15, 256–269, doi:10.3762/bjnano.15.24

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  • affinities for the drug molecule at different pH values. Hence, the observed differences in drug release profiles between pH 5.5 and 7.4 can be plausibly attributed to these pH-dependent interactions [57]. Factors such as pH value, coating material properties, coating thickness, and drug binding capacity
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Published 28 Feb 2024

Multiscale modelling of biomolecular corona formation on metallic surfaces

  • Parinaz Mosaddeghi Amini,
  • Ian Rouse,
  • Julia Subbotina and
  • Vladimir Lobaskin

Beilstein J. Nanotechnol. 2024, 15, 215–229, doi:10.3762/bjnano.15.21

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  • the outer surface of macroscropic and micro- and nano-sized particulate after packaging. It also highlights the dynamic interactions at the bionano interface associated with potential human health hazards. Through biomolecule adsorption, change of conformation, and surface chemistry, foreign materials
  • engage in a complex interplay of dynamic physicochemical interactions, kinetics, and thermodynamic exchanges that can lead to undesirable outcomes [1][8][9][10]. In a more general context, the importance in understanding the mechanism of bionano interactions arises from the increasing awareness and
  • these properties and the biological systems is vital for assessing and mitigating any potential adverse effects associated with exposure to NPs [11]. To advance in this field, it is crucial to comprehend the underlying forces and molecular constituents that govern the interactions between biomolecules
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Published 13 Feb 2024

Ion beam processing of DNA origami nanostructures

  • Leo Sala,
  • Agnes Zerolová,
  • Violaine Vizcaino,
  • Alain Mery,
  • Alicja Domaracka,
  • Hermann Rothard,
  • Philippe Boduch,
  • Dominik Pinkas and
  • Jaroslav Kocišek

Beilstein J. Nanotechnol. 2024, 15, 207–214, doi:10.3762/bjnano.15.20

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  • the generation of plasma from air affecting the nanostructures and DNA–substrate interactions. Despite the underlying mechanism, which is worth of further exploration, this behavior should be emphasized in the present content. Random irradiation of the origami-deposited nanostructures results in a
  • lithographic applications. Conclusion We explored model ion interactions with DNA origami nanostructures, showing promise for fusing these state-of-the-art nanotechnology approaches. The main effects of ion beams on nanostructures are shown in Figure 4A–D. The most important observation is that the shape of
  • ). Artistic representation of four types of effects that can arise from ion beam interactions with DNA origami nanostructures on Si as reported in present work. (A) and (B) are shaping effects via focused beam milling or crater formation. (C) and (D) are height changes induced in vacuum and in air
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Published 12 Feb 2024

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 SiO2 substrates

  • Aleksandra Szkudlarek,
  • Jan M. Michalik,
  • Inés Serrano-Esparza,
  • Zdeněk Nováček,
  • Veronika Novotná,
  • Piotr Ozga,
  • Czesław Kapusta and
  • José María De Teresa

Beilstein J. Nanotechnol. 2024, 15, 190–198, doi:10.3762/bjnano.15.18

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  • unconventional strong electron–electron interactions, present in superlattices formed in twisted bilayered and trilayered graphene, led to the emergence of a new field called “twistronics” – just to highlight recent remarkable discoveries such as superconductivity [2][3], topological phases [4][5], and the
  • , the data reveal phenomena emerging from electron-induced interactions of adsorbed water molecules with SiO2, which have not been reported up to now. We observe that at low electron doses, the method provides a high spatial resolution and induces a low amount of defects in nonexposed areas of graphene
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Published 07 Feb 2024

Modification of graphene oxide and its effect on properties of natural rubber/graphene oxide nanocomposites

  • Nghiem Thi Thuong,
  • Le Dinh Quang,
  • Vu Quoc Cuong,
  • Cao Hong Ha,
  • Nguyen Ba Lam and
  • Seiichi Kawahara

Beilstein J. Nanotechnol. 2024, 15, 168–179, doi:10.3762/bjnano.15.16

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  • hydroxyl group by hydrogen or chemical bonding. The formation of silica particles from hydrolysis and condensation of VTES may occur on the GO surface and in water. The unreacted vinyl group in GO-VTES may have possible interactions with rubber particles through radical graft copolymerization, same as
  • entropic elasticity of NR. Notably, values of tan δ for DPNR/GO-VTES(a) and DPNR/GO-VTES(b) sharply decreased with frequency. This suggests that the energy may be dissipated faster in DPNR/GO-VTES(a) and DPNR/GO-VTES(b) than in DPNR and DPNR/GO. The absence of chemical interactions between NR and GO-VTES
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Published 05 Feb 2024

Ferromagnetic resonance spectra of linear magnetosome chains

  • Elizaveta M. Gubanova and
  • Nikolai A. Usov

Beilstein J. Nanotechnol. 2024, 15, 157–167, doi:10.3762/bjnano.15.15

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  • of magnetic anisotropy, the direction of the particle easy anisotropy axes, and other parameters. In addition, the FMR spectrum is sensitive to the presence of magnetostatic interactions in dense assemblies of magnetic nanoparticles. Thus, ferromagnetic resonance spectroscopy is a promising technique
  • correct interpretation of the FMR spectra, it is highly desirable to use the results of detailed micromagnetic modeling, which takes into account the main physical factors affecting the FMR spectra, including the effect of strong magnetic dipole interactions in magnetosome chains. Both magnetosomes grown
  • strong magnetic dipole interactions between the particles of the chain, as well as the effect of thermal fluctuations of magnetic moments of nanoparticles at a finite temperature. Using this approach, in this paper the FMR spectra of oriented assemblies of linear chains of quasi-spherical magnetosomes
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Published 05 Feb 2024

New application of bimetallic Ag/Pt nanoplates in a colorimetric biosensor for specific detection of E. coli in water

  • Azam Bagheri Pebdeni,
  • Mohammad N. AL-Baiati and
  • Morteza Hosseini

Beilstein J. Nanotechnol. 2024, 15, 95–103, doi:10.3762/bjnano.15.9

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  • . Furthermore, the electrostatic and intermolecular interactions of aptamer–TMB increased the substrate affinity of NPLs. As a result, the catalytic efficacy of Ag/Pt NPL was improved, resulting in a deeper blue signal (Figure 2a, Figure 2b) [32][33]. The zeta potentials of Ag/Pt NPLs, aptamer-NPLs, aptamer
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Published 17 Jan 2024

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

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  • obtained with the high-salinity commercial Ag/Ac elution buffer pH 6.6, which operates under near-neutral conditions but has a high salt content. The structures of protein A/G and nylon and their interactions may explain all these results. On the one hand, protein A/G binds to the constant fraction (Fc) of
  • the antibody by hydrophobic interactions through binding sites inside of its three-dimensional structure [21][22]. The polar side chains are located on the outside of the protein molecule, allowing the protein to form hydrogen bonds with nylon. On the other hand, nylon is a polyamide that contains
  • of hydrophobic interactions [21][22]. Acidic pH values below 5 cause protein A/G to separate from antibody, probably by imposing positive charges on amino acids with pKa values above 5, such as histidine, as described in Zarrineh et al. for the interaction between protein A and the Fc of antibody [25
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Published 15 Jan 2024

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

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  • ][2][3]. The methods of synthesising hydrogels are divided into two basic groups, including physical and chemical cross-linking. Physical cross-linking methods, which are mainly related to the synthesis of natural hydrogels, include changes in intermolecular interactions (e.g., hydrophobic
  • interactions, ionic cross-linking, and hydrogen-bonded gels). Chemically synthesised hydrogels are produced by covalent cross-linking pathways such as radical polymerisation, radiation cross-linking, grafting, thermogelation, enzymatic reactions, and click chemistry [4][5]. Hydrogel materials have quite a long
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Published 11 Jan 2024

Curcumin-loaded nanostructured systems for treatment of leishmaniasis: a review

  • Douglas Dourado,
  • Thayse Silva Medeiros,
  • Éverton do Nascimento Alencar,
  • Edijane Matos Sales and
  • Fábio Rocha Formiga

Beilstein J. Nanotechnol. 2024, 15, 37–50, doi:10.3762/bjnano.15.4

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  • delivery specific to macrophage targets, such as ᴅ-mannose, phosphatidylserine, or lactoferrin. This may reduce the drug resistance of the parasite in the long term. Furthermore, the surface charge of nanostructures may influence internalization since positive charges favor electrostatic interactions of
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Published 04 Jan 2024

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

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  • KE diad (e.g., catestatin) [13]. During the formation process, hydroxy groups of dopamine form hydrogen bonds with carboxylic groups (COO−) of glutamate (pKa = 4.3), whereas protonated amino groups (NH3+) of lysine (pKa = 10.5) further stabilize the aggregate by cation–π interactions with the
  • destabilization of the bacterial cell membrane by interactions with the nanocarriers (thus allowing for the penetration of the drug into the bacteria) is not known (Figure 1e). Yet, the accumulation of ONPs in bacterial cells is crucial if ONPs are to be used for fluorescent labelling of cells. Also, in the case
  • and Ball [14] and Bergtold et al. [13], human serum albumin and other proteins play an important role in size control and stability of PDA NPs. Similarly, the stability of BSA/PDA NPs is probably due to BSA thanks to the strong PDA/KE interactions reported by Bergtold et al. This is supported by the
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Published 22 Dec 2023

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

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  • electron–molecule interactions in FEBID, it is critical to understand the extent and nature of these processes and how they are reflected in the deposit formation from individual precursors or specific ligand structures. A very interesting approach in this direction was recently introduced by Jurczyk et al
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Published 06 Dec 2023

Hierarchically patterned polyurethane microgrooves featuring nanopillars or nanoholes for neurite elongation and alignment

  • Lester Uy Vinzons,
  • Guo-Chung Dong and
  • Shu-Ping Lin

Beilstein J. Nanotechnol. 2023, 14, 1157–1168, doi:10.3762/bjnano.14.96

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  • “reinforcement” methods for overcoming the inherent drawbacks of using photoresist masters. We show that the PU nanopillars and nanoholes increase the neurite length of pheochromocytoma 12 (PC12) cells through unique growth cone interactions. Moreover, we demonstrate, for the first time, that hierarchically
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Published 29 Nov 2023

Elasticity, an often-overseen parameter in the development of nanoscale drug delivery systems

  • Agnes-Valencia Weiss and
  • Marc Schneider

Beilstein J. Nanotechnol. 2023, 14, 1149–1156, doi:10.3762/bjnano.14.95

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  • article, we discuss examples highlighting the influence of elasticity in nanoscale biological interactions focusing on mucosal delivery and on tumor targeting. Besides this, we discuss the influence of different measurement settings using atomic force microscopy for the determination of mechanical
  • during formulation development. There is a clear trend for biological interactions among particles of the same material. However, different mechanical properties are expected when comparing across these particles. This topic will be discussed in the subsequent section. Nanoparticle elasticity and
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Published 23 Nov 2023

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

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  • stability and solubility [9]. The complexation occurs mainly through hydrophobic interactions in protein cavities [10][11]. In a recent study, zein nanoparticles loaded with CUR have been studied for their potential in treating brain tumors, and the results have demonstrated a reduction in the proliferation
  • cytotoxicity. However, the cytotoxicity and the interaction of cells with CUR-HSA-MPs depends also on cell uptake of particles and interactions between particles and cells [42]. Our results were in line with those previously reported by Zhang and co-workers [43]. The authors reported that cell viability of
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Published 21 Nov 2023

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

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  • layer of 15 Å was selected for each structure to eliminate interactions between the two surfaces. The conditions for ending the optimization loops for electronic and ionic degrees of freedom were defined by the total energy difference between the steps of 10−8 eV and between the internal forces of 10−2
  • distance (dint). Comparing variants T1 and T2, we notice the big discrepancy between their interfacial energies (−0.6 J/m2). The favored T1 structure is characterized by a larger Au rumpling parameter, arising from interactions between interfacial Au atoms with atoms from the next Ge layer, and a smaller
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Published 15 Nov 2023

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

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  • might not be their Hb content. In their work from 2013, Yan et al. [40] showed how the formation of a protein corona influences particle–cell interactions. Especially bovine serum albumin (BSA) showed an ambivalent effect. On the one hand, the corona, which consisted mainly of BSA, reduced the direct
  • arise spontaneously from C3 by hydrolysis, could be considered here. Moghimi et al. report numerous possible interactions of the complement system with, among others, nanoparticles as a drug delivery system [44]. The authors also discussed the possible effects of spontaneously forming water shells and
  • emerging hydrogen bonds, altered surface structures, and possible interactions between proteins and particles, in particular polymers such as HbMPs [45][46]. The adsorption of various plasma proteins seems to not only enhance the chance of complement activation but also to promote phagocytosis directly, as
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Published 19 Oct 2023

Exploring internal structures and properties of terpolymer fibers via real-space characterizations

  • Michael R. Roenbeck and
  • Kenneth E. Strawhecker

Beilstein J. Nanotechnol. 2023, 14, 1004–1017, doi:10.3762/bjnano.14.83

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  • nanoscale fibrils we observe. Despite the randomly sequenced terpolymer chemistry, nanoscale fibrils still clearly form in Technora®. The branched network likely results from local variations in the strength of intermolecular interactions. For example, misalignment between adjacent molecules (e.g., due to
  • molecular “bends” within DPE molecules) or weak intermolecular interactions (e.g., due to distributions in monomers capable of intermolecular hydrogen bonding) may make it energetically favorable for sets of molecules to branch apart at different junctures rather than to remain together within a fibril
  • stiffness (or “stiffness”), quantified in [N/m], makes no assumptions about tip–substrate interactions such as tip size or shape. It is primarily useful for semi-quantitative mapping to show the relative fluctuations in stiffness within different regions. However, stiffness itself is not a material property
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Published 05 Oct 2023

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

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  • attachment. The reported data may contribute to a better understanding of the physical chemistry underlying the electron–molecule interactions, which is crucial for potential applications of these molecular systems in the deposition of nanoscale structures. Keywords: dissociative electron attachment; gas
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Published 26 Sep 2023

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

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  • credited to a significant contribution of van der Waals interactions in the studied structure (The P–P distance in the vacancy was 3.22 Å, which is lower than the doubled van der Waals radius of phosphorus [35]). Slight shifts of frequencies are not uncommon for DFT calculations in such cases even when
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Published 26 Sep 2023

Metal-organic framework-based nanomaterials for CO2 storage: A review

  • Ha Huu Do,
  • Iqra Rabani and
  • Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 964–970, doi:10.3762/bjnano.14.79

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  • ]. This discrepancy can be attributed to the presence of unsaturated Cu metal centers within the MOF structure, which facilitate interactions with CO2 molecules. Additionally, the MOF-74 family, built from metal(II) oxide chains linked by 2,5-dioxido-1,4-benzenedicarboxylate, exhibited a high CO2
  • interactions with other chemical species. Extensive literature has been devoted to the investigation of MOFs with OMSs. Notably, HKUST-1, featuring copper OMSs, displayed a CO2 uptake of 4.1 mmol·g−1 at 298 K and 1 bar [22]. The effectiveness of OMSs has been exemplified in a study conducted by Caskey and
  • −1. This discrepancy was attributed to the shorter length of the Mg–O bonds, which facilitated enhanced electrostatic interactions between the Mg sites and CO2 molecules. Moreover, Mg-MOF-74 exhibited a higher heat of adsorption than other variants. Kim et al. synthesized bimetallic MOFs
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Published 20 Sep 2023

Prediction of cytotoxicity of heavy metals adsorbed on nano-TiO2 with periodic table descriptors using machine learning approaches

  • Joyita Roy,
  • Souvik Pore and
  • Kunal Roy

Beilstein J. Nanotechnol. 2023, 14, 939–950, doi:10.3762/bjnano.14.77

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  • interpret and can be calculated quickly without the involvement of expert personnel. These descriptors simplify the nanostructure property calculation and determine the nanoscale interactions without much computational intervention. The use of such descriptors saves time; the descriptors are also cost
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Published 12 Sep 2023

Upscaling the urea method synthesis of CoAl layered double hydroxides

  • Camilo Jaramillo-Hernández,
  • Víctor Oestreicher,
  • Martín Mizrahi and
  • Gonzalo Abellán

Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76

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  • -layer interactions and chemical composition. One of the most interesting families is that of layered double hydroxides (LDHs), which are characterized by having a positive charge, hence the name “anionic clays”. This family exhibits hydrotalcite-like structures consisting of infinite positively charged
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Published 11 Sep 2023

Antibody-conjugated nanoparticles for target-specific drug delivery of chemotherapeutics

  • Mamta Kumari,
  • Amitabha Acharya and
  • Praveen Thaggikuppe Krishnamurthy

Beilstein J. Nanotechnol. 2023, 14, 912–926, doi:10.3762/bjnano.14.75

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  • different spatial orientations due to their asymmetric nature. Additionally, the functionalization also alters the surface composition and morphology of the NPs. The nature of interactions between NPs and antibodies is directly related to the type of functional groups present on the NPs surface and the
  • induce conformational changes, which result in denaturation and loss of activity [43]. Similarly, electrostatic interactions between oppositely charged NPs and antibodies result in weak interactions where the antibodies are easily detached due to small changes in pH or ionic strength [44]. Covalent
  • trials yet. It is still very important that researchers understand better the chemistry between NPs and antibodies to develop improved ACNPs. Current knowledge of targeted delivery, tumor vasculature, and interactions of ACNPs in the human body is very limited and, hence, results in failure in clinical
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Published 04 Sep 2023
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