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Search for "structure" in Full Text gives 1946 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

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

Graphical Abstract
  • 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. The observed effects on DNA origami include structure height decrease or increase upon fast heavy ion irradiation in
  • utilizing heavy ions. However, as previously pointed out, the folded configuration of DNA origami nanostructures offers additional stability against lower-LET ionizing radiation. Could the folded structure of the DNA origami also deal with initial damage around the ion track and conserve its structure in
  • case; however, the evaluation of the crater to fluence ratio is not straightforward. In our case, the craters in the DNA nanotriangle structure can be evaluated only if they lie fully inside the nanostructure. Also with this sample, we can only confidently probe 14 to 18 nm widths of the top surface of
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Published 12 Feb 2024

Exploring disorder correlations in superconducting systems: spectroscopic insights and matrix element effects

  • Vyacheslav D. Neverov,
  • Alexander E. Lukyanov,
  • Andrey V. Krasavin,
  • Alexei Vagov,
  • Boris G. Lvov and
  • Mihail D. Croitoru

Beilstein J. Nanotechnol. 2024, 15, 199–206, doi:10.3762/bjnano.15.19

Graphical Abstract
  • effects have been implicated in the observed increase of the critical temperature in recently discovered NbSe2 superconducting monolayers [16]. Theoretical investigations attribute this enhancement to the disorder-induced multifractal structure of electronic wave functions [17][18], as revealed through
  • numerical solutions of microscopic theory equations in low-dimensional samples [19][20]. In most materials, inhomogeneities exhibit a certain structure characterized by long-range spatial correlations. There is a growing recognition that such correlations exert profound alterations of the basic properties
  • . This is the hallmark of a scale-free distribution, which is typical of a fractal pattern where stripes with oxygen form a similar structure on all scales up to 400 μm. The exploration of superconductivity in the presence of spatially correlated disorder has recently been initiated, as evidenced by the
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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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  • -beam bombardment, which initially introduces defects into the graphene structure and then knocks out carbon atoms, although the edges of the fabricated nanostructures remain rough after the process [11]. Other direct techniques, such as focused ion beam (FIB) milling with heavy Ga+ ions, are not
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Published 07 Feb 2024

Nanocarrier systems loaded with IR780, iron oxide nanoparticles and chlorambucil for cancer theragnostics

  • Phuong-Thao Dang-Luong,
  • Hong-Phuc Nguyen,
  • Loc Le-Tuan,
  • Xuan-Thang Cao,
  • Vy Tran-Anh and
  • Hieu Vu Quang

Beilstein J. Nanotechnol. 2024, 15, 180–189, doi:10.3762/bjnano.15.17

Graphical Abstract
  • NPs also helps to maintain its stability. Poly(ethylene glycol) (PEG) on the surface of NPs would serve as a brush to inhibit serum protein adsorption [4]. The PEO block of F127 shares the same core structure as PEG; hence, the emergence of a form of PEG would likewise improve the pharmacokinetics of
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Published 06 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

Graphical Abstract
  • desire to enhance the green strength of NR to achieve the comparable mechanical properties of vulcanized natural rubber (VNR) [1][2][3]. VNR is commonly utilized for NR commercial products. However, due to its crosslinked structure, VNR products cannot be recycled or degraded after diposal [4][5
  • ]. Therefore, new approaches have been introduced to process NR into eco-friendly commercial products [6][7]. Since the discovery of the island nanomatrix structure of NR [8] and the development of effective methods to prepare deproteinized natural rubber (DPNR) [9][10], graft copolymerization of NR has had
  • grafting on NR to form an in situ nanosilica nanomatrix. The formation of nanosilica particles improved the thermal and mechanical properties of the graft copolymer. Furthermore, a well-controlled nanosilica nanomatrix structure in NR has been achieved in our previous work [18], where VTES was grafted onto
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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

Graphical Abstract
  • nanoparticles; numerical simulation; Introduction Magnetotactic bacteria are living organisms that grow within themselves magnetite nanoparticles called magnetosomes [1][2][3][4]. In contrast to chemically synthesized magnetite nanoparticles [5][6], magnetosomes have a perfect crystal structure, a narrow size
  • magnetic nanoparticle assemblies can be carried out by solving the stochastic Landau–Lifshitz equation [29][30][31][32][33][34][35]. This approach makes it possible, when calculating the FMR spectra, to take into account all the details of the geometric structure of magnetosome chains, the influence of
  • nanoparticles are scarce [40]. Because of the well-known perfection of the crystal structure and shape of magnetosomes, in this paper most of the calculations are carried out for the case of moderate damping, κ = 0.05–0.1; however, the case of high damping, κ = 0.3, 0.5, is also briefly considered. Note that it
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Published 05 Feb 2024

CdSe/ZnS quantum dots as a booster in the active layer of distributed ternary organic photovoltaics

  • Gabriela Lewińska,
  • Piotr Jeleń,
  • Zofia Kucia,
  • Maciej Sitarz,
  • Łukasz Walczak,
  • Bartłomiej Szafraniak,
  • Jerzy Sanetra and
  • Konstanty W. Marszalek

Beilstein J. Nanotechnol. 2024, 15, 144–156, doi:10.3762/bjnano.15.14

Graphical Abstract
  • . The emission wavelength is determined by the crystal size and structure; crystals of the same chemistry can have emission maxima spanning a wide range. As the size of the dots decreases, both their optical absorption and emission shift to higher energies [41]. Because hydrophilic QDs are coated with
  • CPE (CPE-T) is responsible for the polarization of the sample in various areas of the material structure and on the electrodes. The mechanisms of ionic or electronic conductivity are represented by the resistance R [54]. Substitute systems with nanodots QD520:P3HT:PC71BM, QD580:P3HT:PC71BM, and QD600
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Published 02 Feb 2024

In situ optical sub-wavelength thickness control of porous anodic aluminum oxide

  • Aleksandrs Dutovs,
  • Raimonds Popļausks,
  • Oskars Putāns,
  • Vladislavs Perkanuks,
  • Aušrinė Jurkevičiūtė,
  • Tomas Tamulevičius,
  • Uldis Malinovskis,
  • Iryna Olyshevets,
  • Donats Erts and
  • Juris Prikulis

Beilstein J. Nanotechnol. 2024, 15, 126–133, doi:10.3762/bjnano.15.12

Graphical Abstract
  • applications in many fields of science and technology, including nanofabrication [1], optical coatings [2], sensing [3][4][5], and others [6]. Many synthesis protocols have been developed for precise control of the pore structure of PAAO [7], which allow for the creation of nanoscale patterns for various types
  • ) setup, the PAAO structure was analyzed using the fast Fourier transform (FFT) method [21]. However, the optimal PAAO thickness for FFT analysis was ≈2.5–5.0 μm, where multiple interference fringes can be observed in the reflectance spectra. Here, the PAAO thickness was calculated in real time by fitting
  • monitoring of PAAO layer growth and the termination of the process at a desired PAAO thickness for reliable fabrication of subwavelength optical coatings with thickness below 300 nm. Results and Discussion The obtained PAAO layer structure (Figure 1a) with a hexagonal pore arrangement, ≈100 nm center-to
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Published 31 Jan 2024

Assessing phytotoxicity and tolerance levels of ZnO nanoparticles on Raphanus sativus: implications for widespread adoptions

  • Pathirannahalage Sahan Samuditha,
  • Nadeesh Madusanka Adassooriya and
  • Nazeera Salim

Beilstein J. Nanotechnol. 2024, 15, 115–125, doi:10.3762/bjnano.15.11

Graphical Abstract
  • wurtzite structure and is consistent with the Inorganic Crystal Structure Database card number (ICSD card No. 067454) for the pure ZnO phase with space group P63mc (Figure 1a). All the diffraction peaks at angles (2θ) of 31.77°, 34.43°, 36.26°, 47.55°, 56.61°, 62.89°, 66.39°, 67.98°, and 69.10° correspond
  • ZnO NPs characterization The PXRD technique provides important insights into the chemical composition, physical characteristics of the material and crystallographic structure, and crystalline particle size based on the scattered X-ray beam intensity [20][21]. The PXRD pattern (Figure 1a) of
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Published 23 Jan 2024

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

Graphical Abstract
  • useful techniques for the investigation of NEs, since it provides detailed information about the internal structure of colloidal systems observed in their native state [38]. In cryo-TEM, it was possible to observe spherical droplets (Figure 1). Similar results of spherical droplets smaller than 180 nm
  • oil–surfactant core–shell structure within the micelles. Consequently, a lower amount of monoterpenes is released into the surrounding medium [42]. Among the mathematical models used to study drug kinetics, the Korsmeyer–Peppas release model proved to be the most suitable for our formulations (Table 4
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Published 18 Jan 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

Graphical Abstract
  • structure of the oligonucleotides the UNAfold program was employed, as illustrated in Supporting Information File 1, Figure S1. Peroxidase-like activity of Ag/Pt NPLs Supporting Information File 1, Figure S2a illustrated a comparison of the inherent peroxidase activity of Ag/Pt NPLs. The intrinsic
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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

Graphical Abstract
  • 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
  • protection against denaturation factors. Since hydrogen bonds are formed between protein A/G and nylon, it is understandable that a three-dimensional nylon structure, such as the nanofibres, would provide more hydrogen bonds as attachment points than a planar surface, allowing the attached protein to be
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Published 15 Jan 2024

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

Graphical Abstract
  • and cells to penetrate into their structure [10]. Second, high drug loading can be achieved, and the drug-release profile (i.e., prolonged, stimulus-activated, and biphasic releases) can be modulated by using different nanofiber structures (e.g., blending, core/shell, and multilayer structures) and
  • ]. The core/shell nanofiber structure can also prolong the drug release since the polymer shell plays a role as a rate-control barrier [15]. On the other hand, the nanofiber scaffolds fabricated using suitable hydrophilic or water-soluble polymers are used to improve the dissolution profile and
  • nanofiber scaffold. This was due to the O–H stretching vibration of the glycerol component in BBR NPs (Figure 2). Peculiarly, the absorption bands at 1646 cm−1 and 1506 cm−1, characteristic of the C=N+ double bond and the furyl group in the molecular structure of BBR, respectively, were only displayed in
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Published 12 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

Graphical Abstract
  • -stage synthesis of polymer composites based on PNIPAAm hydrogel was presented. Both conductive particles in the form of conductive carbon black (cCB) and MnCo2O4 (MCO) spinel particles were suspended in the three-dimensional structure of the hydrogel. The MCO particles in the resulting hydrogel
  • composite acted as an electrocatalyst in the oxygen evolution reaction. Morphological studies confirmed that the added particles were incorporated and, in the case of a higher concentration of cCB particles, also bound to the surface of the structure of the hydrogel matrix. The produced composite materials
  • were tested in terms of their electrical properties, showing that an increase in the concentration of conductive particles in the hydrogel structure translates into a lowering of the impedance modulus and an increase in the double-layer capacitance of the electrode. This, in turn, resulted in a higher
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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

Graphical Abstract
  • hydrodynamic mean particle size of 312 ± 1.89 nm, PdI of 0.305 ± 0.17 and zeta potential of −38 ± 0.93 mV. These particles were able to entrap 88% of curc due to the irregular lipid crystal structure of NLCs [53]. The NLCs proved to be safe for macrophages, which promptly internalized the nanostructures, as
  • nanostructured systems that promote increased leishmanicidal activity and can encapsulate curc as a therapeutic alternative for the treatment of leishmaniasis. Metallic nanoparticles Metallic nanoparticles (MNPs) are versatile nanostructures due to their tunability in shape, composition, size, structure
  • game, once more in vivo information is available and current medicines based on nanoparticles provide insights for fast-tracking this system from the technological and regulatory point of view. Abbreviations Table 2 lists the in this article used abbreviations and their explanations. Chemical structure
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Published 04 Jan 2024

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

Graphical Abstract
  • stage is the deposition of about 70 nm of Al at an angle of −45° to form a SIN tunnel junction. Thus, as a normal layer we use the hybrid superconducting/ferromagnetic structure, which allows for decreasing the absorber volume and also for suppressing the Andreev heating current [22] to improve detector
  • equipment in our lab. Hence, the results might be different from the expected values. As can be seen from Figure 5, the I–V characteristics of the 210 and 240 GHz arrays are quite close, which was not achieved at the first try. The normal structure resistance at 210 GHz (Figure 5, blue curve) was 200 Ω, the
  • operating point resistance was 170 Ω, and the leakage resistance was 3.4 kΩ. The normal structure resistance at 240 GHz (Figure 5, red curve) was 310 Ω, the operating point resistance was 270 Ω, and the leakage resistance was 4.5 kΩ. To study the resonant properties of the CEBs, we have used generators
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Published 04 Jan 2024

Nanotechnological approaches in the treatment of schistosomiasis: an overview

  • Lucas Carvalho,
  • Michelle Sarcinelli and
  • Beatriz Patrício

Beilstein J. Nanotechnol. 2024, 15, 13–25, doi:10.3762/bjnano.15.2

Graphical Abstract
  • resistant to gastrointestinal barriers, representing another avenue of opportunity for the presented nanoformulation [42]. Niosomes are nanosystems similar to liposomes but formed using non-ionic surfactants like Span 60 [43]. They also could incorporate cholesterol in their structure beyond other lipids
  • typical tissue structure. Regarding granuloma formation, the combination was also efficient, although another combination using ginger-derived nanoparticles and PZQ caused a more significant effect than the total dose of PZQ. In addition to this, ginger-derived nanoparticles alone or combined with other
  • unsaturated free fatty acid in the outer layer of human skin, is commonly used as a permeation promoter, inducing the disruption of the lipid structure of the membrane. de Oliveira et al. [85] showed in vitro that oleic acid encapsulated in polymeric nanoparticles could potentially be used in schistosomiasis
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Published 03 Jan 2024

TEM sample preparation of lithographically patterned permalloy nanostructures on silicon nitride membranes

  • Joshua Williams,
  • Michael I. Faley,
  • Joseph Vimal Vas,
  • Peng-Han Lu and
  • Rafal E. Dunin-Borkowski

Beilstein J. Nanotechnol. 2024, 15, 1–12, doi:10.3762/bjnano.15.1

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  • method to form an undercut structure that guarantees a clean lift-off procedure. The second approach used dry etching with an Ar beam to etch a thin Py film, while an electron-beam-patterned negative resist mask kept the desired structure. In the third process, nanostencils (shadow masks) with
  • structure. The resist was patterned using an electron beam, which offers higher resolution than other sources (e.g., UV light) because of the smaller wavelength of electrons. Since the use of an ultrasonic bath will destroy the free-standing membrane, the undercut must be deliberately made larger to ensure
  • a clean lift-off process. The larger undercut is realized by multi-dose exposure, which consists of two parts: The main exposure is for patterning the nominal structure, and an additional exposure is for patterning the outline of the nominal structure. This additional exposure is performed with a
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Published 02 Jan 2024

unDrift: A versatile software for fast offline SPM image drift correction

  • Tobias Dickbreder,
  • Franziska Sabath,
  • Lukas Höltkemeier,
  • Ralf Bechstein and
  • Angelika Kühnle

Beilstein J. Nanotechnol. 2023, 14, 1225–1237, doi:10.3762/bjnano.14.101

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  • Tobias Dickbreder Franziska Sabath Lukas Holtkemeier Ralf Bechstein Angelika Kuhnle Physical Chemistry I, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany 10.3762/bjnano.14.101 Abstract Scanning probe microscopy (SPM) techniques are widely used to study the structure and
  • force microscopy; calibration; drift correction; image correlation functions; periodic structures; scanning probe microscopy; Introduction In science and technology, scanning probe microscopy (SPM) techniques are widely used to study the structure and properties of surfaces and interfaces from the
  • micrometer scale down to the atomic level. The common element of SPM techniques is that surface structure and properties are revealed by moving a probe over the sample covering a given area or volume. During this movement, the interaction between probe and sample is measured at fixed points in the scan area
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Published 28 Dec 2023

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

Graphical Abstract
  • structure of these albumin/PDA NPs has not been elucidated completely. It has been demonstrated that proteins are present in the NPs’ shell; they might also be present in the core (Figure 1d). Nevertheless, their potential both for fluorescent labelling of alive bacterial cells and as nanovector for
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Published 22 Dec 2023

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

Graphical Abstract
  • -coated, Cr/Au-coated, and uncoated Si tips were used to scan a calibration standard grating in AFM contact mode with sub-nanonewton load to obtain the curved scan profile of the edge corner of the grating structure. The data points of the curved profile of each tip were fitted with a nonlinear regression
  • measured using a tip characterizer and tip qualification or standard calibration grating. In one of those studies, the tip geometry was determined by using a well-known sharp-edged silicon structure, which included height patterns with a certified pitch on a nanostructure plate [10]. Three types of AFM
  • at the top corner of a grating structure (a fabricated square column). Then, the tip radius was estimated by fitting a manually drawn circle to the curve profile of the AFM scan [10]. However, the tip curve profile can differ from the shape of a circle, leading to some deviation of the tip curve
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Published 15 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

Graphical Abstract
  • . [26] under the term focused-electron-beam-induced mass spectrometry (FEBiMS). In this approach, ion-extraction mass spectrometry, in close proximity to the forming FEBID structure, is used to analyze the charged, desorbing ligand fragments. Another approach in this direction is to combine ultrahigh
  • , which involves SnMe4 as a methylation agent [36]. The elemental composition of the FEBID structure was calculated using the relative sensitivity factors (S) [37], that is, SAu: 0.21; SCl: 0.69; SC: 0.08; SSn: 0.53. From these, the atomic concentration of the deposit was found to be 51 atom % Au, 2 atom
  • the edge of the deposits, indicated by the orange dashed lines. It is important to note that this negative dip is also observed for other line profiles throughout the deposit. Therefore, the negative dips are present in the entire structure (Supporting Information File 1, Figure S4). This negative dip
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Published 06 Dec 2023

Spatial variations of conductivity of self-assembled monolayers of dodecanethiol on Au/mica and Au/Si substrates

  • Julian Skolaut,
  • Jędrzej Tepper,
  • Federica Galli,
  • Wulf Wulfhekel and
  • Jan M. van Ruitenbeek

Beilstein J. Nanotechnol. 2023, 14, 1169–1177, doi:10.3762/bjnano.14.97

Graphical Abstract
  • ][3] has always held a central role, as the flexibility and control over the structure of molecules is unmatched. One of the fundamental parts of devices employing a bottom-up approach combined with molecular electronics is comprised of metal electrodes and molecular layers deposited onto them. For
  • the same area, the center square of the image appears lower in topography compared to the sides when the scanning area is widened. Also, the measured current increases from image to image, while the etch pits remain intact, indicating that the Au surface structure remains unaffected. We attribute
  • in Figure 4 this is slightly distorted by a probe effect duplicating features, the systematic difference in surface structure between Au/Si and Au/mica, already observed in the bare substrates, is reproduced. Just as for the bare Au/Si, the substructures of the substrate lead to strong variations in
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Published 05 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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  • plain microgrooves and there was a slight decrease in neurite length [16]. In this work, we provide significant advancements to our previous study in three main areas: first, by fabricating a new hierarchical SU-8 structure consisting of nanoholes on microgrooves; second, by demonstrating that the low
  • the fluorescence patterns conforming to the structure shapes. Laminin was also successfully coated on the flat areas surrounding the pillars and holes, as shown in the corresponding confocal slices in Supporting Information File 1, Figure S5. O2 plasma treatment of PU enables strong laminin adsorption
  • served as a template for creating a PDMS nanopillar structure for the capillary thermal imprinting of SU-8. An AZ1518 film was spin-coated on glass coverslips at 5000 rpm and soft-baked at 100 °C for 1.5 min. Exposure was performed at a dose of 13 mJ·cm−2 with an array of 1.1 μm polystyrene nanospheres
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Published 29 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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  • addition, the removal of sericin, which requires a degumming process, is a prerequisite for using silk cocoons in biomedical applications to reduce the risk of an inflammatory response [18]. However, this degumming process can lead to damage to the silk structure, increase the polydispersity of the silk
  • . Also, it is seen that, despite the addition of CUR, a typical peanut-like structure was formed by the porous MnCO3 template, as previously found in our studies using the CCD technique [26][27][28][29]. There are strict size requirements for particles in drug delivery systems, typically around 100 nm
  • 1644 and 1546 cm−1 indicated the vibration adsorption of amide I (C=O stretching) and amide II (C–N stretching and N–H bending vibrations), respectively. These are the main vibrational bands in the albumin backbone that formed the secondary structure of the protein. It is also seen that the absorption
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Published 21 Nov 2023
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