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Search for "image" in Full Text gives 1437 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Studies of probe tip materials by atomic force microscopy: a review

  • Ke Xu and
  • Yuzhe Liu

Beilstein J. Nanotechnol. 2022, 13, 1256–1267, doi:10.3762/bjnano.13.104

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  • mechanical properties of the cantilever beam directly affect the performance, measurement resolution, and image quality of the AFM instrument. AFM probe tips [9][10] are generally fabricated with coatings, carbon nanotubes, magnetic nanoparticles, or even protein functionalization. A combination of probe
  • Figure 1a and Figure 1b, the F(z) curve and the high-resolution NC-AFM image were used as criteria to test the conditions of the constructed nano-tip. It can be seen from the Figure 1 that the tip remains intact, and the atomic and molar periodicity in the images is resolved with high quality. This work
  • target nanotubes to Si tips under scanning electron microscopy; and attaching nanotubes to Si tips by carbon deposition. The strong adhesion of carbon deposition produces nanotube tips capable of surviving multiple surface collisions. The ability to image the fine structure of double-stranded DNA
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Published 03 Nov 2022

A super-oscillatory step-zoom metalens for visible light

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

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

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  • emission depletion microscopy (STED) can realize the localization of single fluorescent molecules with 1 nm accuracy [2], albeit with the disadvantages of required fluorescence labeling and slow image reconstruction. Super-resolution microscopy based on structured light illumination (SIM) can realize a
  • spatial resolution of λ/5 [3]. However, it requires additional designed illumination patterns and image reconstruction. Near-field scanning optical microscopy can achieve super-resolution imaging by detecting surface evanescent fields of objects [4]. Near-field focusing lenses [5] based on surface
  • high optical loss and are not suitable for far-field imaging. As a result, it is still a huge challenge to achieve unlabeled far-field imaging without image post processing. Optical super-oscillation is a unique optical phenomenon in which an optical signal can oscillate faster locally than its maximum
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Published 28 Oct 2022

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

  • Yinglin Ma,
  • Xiangyun Xiao and
  • Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

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Published 27 Oct 2022

Application of nanoarchitectonics in moist-electric generation

  • Jia-Cheng Feng and
  • Hong Xia

Beilstein J. Nanotechnol. 2022, 13, 1185–1200, doi:10.3762/bjnano.13.99

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  • microscopy (SEM) image of an individual single-walled carbon nanotube (SWNT) device. (c) Dependence of the induced voltage difference, ΔV, on the quantity of water injected into the chamber. ΔV increases with the quantity of water inside the chamber and tends to saturate at 500 μL. It is nearly symmetric for
  • content is not subject to CC BY 4.0. (d) Single-walled carbon nanotubes convert collected energy into voltage output with repeatability. (e) An image of a suspended SWNT rope. (f) Schematic diagram of an ethanol evaporation energy collection device. Figure 1d–f were reproduced from [44], Liu, Z. et al
  • ; W. Guo), Copyright 2014 Springer Nature. This content is not subject to CC BY 4.0. (a) SEM image of the porous carbon film. (b) The porous carbon film power generation device and its performance are depicted schematically. Figure 3a, 3b, and 3f were reproduced from [9], Ding, Tianpeng et al., “All
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Published 25 Oct 2022

Microneedle-based ocular drug delivery systems – recent advances and challenges

  • Piotr Gadziński,
  • Anna Froelich,
  • Monika Wojtyłko,
  • Antoni Białek,
  • Julia Krysztofiak and
  • Tomasz Osmałek

Beilstein J. Nanotechnol. 2022, 13, 1167–1184, doi:10.3762/bjnano.13.98

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  • Commons Attribution 4.0 International License, https://creativecommons.org/licenses/by/4.0/). Stereomicroscopic image of the microneedle patch (e) and magnification of the microneedles (f), scalebars represent 1 mm and 200 µm respectively. Figure 4 was reproduced from [160] (“Microneedle ocular patch
  • not subject to CC BY 4.0. Microscopic image of dissolving MNs manufactured by Albadr and co-workers. Figure 5 was reproduced from [176] (© 2021 A. A. Albadr et al., distributed under the terms of the Creative Commons Attribution 4.0 International License, https://creativecommons.org/licenses/by/4.0
  • /). Microscopic image of the MNs obtained by Amer and Chen. Figure 6 was adapted from [178], M. Amer; R. K. Chen, "Hydrogel-Forming Microneedle Arrays for Sustained and Controlled Ocular Drug Delivery", Journal of Engineering and Science in Medical Diagnostics and Therapy, with permission from ASME. Copyright
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Published 24 Oct 2022

A cantilever-based, ultrahigh-vacuum, low-temperature scanning probe instrument for multidimensional scanning force microscopy

  • Hao Liu,
  • Zuned Ahmed,
  • Sasa Vranjkovic,
  • Manfred Parschau,
  • Andrada-Oana Mandru and
  • Hans J. Hug

Beilstein J. Nanotechnol. 2022, 13, 1120–1140, doi:10.3762/bjnano.13.95

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  • . Clearly, the deflection sensor noise does no longer limit the minimally detectable force derivative for bandwidths up to and beyond 1 kHz. Such high measurement bandwidths can for example, be used to measure with high speed a large-scale image showing atomic steps of the Au(111) surface with thin NaCl
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Published 11 Oct 2022

Green synthesis of zinc oxide nanoparticles toward highly efficient photocatalysis and antibacterial application

  • Vo Thi Thu Nhu,
  • Nguyen Duy Dat,
  • Le-Minh Tam and
  • Nguyen Hoang Phuong

Beilstein J. Nanotechnol. 2022, 13, 1108–1119, doi:10.3762/bjnano.13.94

Graphical Abstract
  • maximum (FWHM). The morphology and size of ZnO NPs were illustrated using FESEM and HRTEM. The FESEM image shown in Figure 4 indicates that ZnO NPs have a relatively homogeneous size. The HR-TEM results and particle size distributions obtained from the HR-TEM images are shown in Figure 5. The HR-TEM
  • hexagonal wurtzite structure form. The HR-TEM image showed the interplanar spacing of 0.251 ± 0.003 nm corresponding to the (101) crystal plane of ZnO, and the size of ZnO NPs is in the range of 30–100 nm. The bandgap energy of synthesized ZnO was 3.15 eV. Synthesized ZnO NPs showed high photocatalytic
  • . The E. coli bacteria with concentrations of 105 and 104 CFU/mL was almost completely destroyed after 6 h by ZnO with concentrations of 1, 5, and 10 mg/mL. Schematic illustration of the synthesis of ZnO nanoparticles. DTA/TG diagram of the zinc resinate sample. XRD diagram of ZnO NPs. FESEM image of
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Published 07 Oct 2022

Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

  • Se-Kwon Kim,
  • Sesha Subramanian Murugan,
  • Pandurang Appana Dalavi,
  • Sebanti Gupta,
  • Sukumaran Anil,
  • Gi Hun Seong and
  • Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

Graphical Abstract
  • , treating bone calvarial defects with a natural, mechanical, and biochemical environment with accomplished osteoblast differentiation and proliferation has been addressed by using chitosan–graphene nanocomposite materials. The bone structure. The magnified image shows the physiological arrangement of the
  • been detected. Figure 2b depicts an optical microscopy image of Masson-Goldner staining which shows that acemannan and chitosan accelerates the formation of new bone. Figure 2 was reprinted with permission from [99], Copyright 2019 American Chemical Society. This content is not subject to CC BY 4.0. (a
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Published 29 Sep 2022

Spindle-like MIL101(Fe) decorated with Bi2O3 nanoparticles for enhanced degradation of chlortetracycline under visible-light irradiation

  • Chen-chen Hao,
  • Fang-yan Chen,
  • Kun Bian,
  • Yu-bin Tang and
  • Wei-long Shi

Beilstein J. Nanotechnol. 2022, 13, 1038–1050, doi:10.3762/bjnano.13.91

Graphical Abstract
  • report [53]. As shown in Figure 2b, pristine Bi2O3 shows nanoparticles with diameters of approx. 10–20 nm. In the SEM image of the composite BOM-20 (Figure 2c), Bi2O3 nanoparticles are tightly attached on the surface of MIL101(Fe). Note that MIL101(Fe) in BOM-20 presents a spindle-like shape instead of
  • ). Figure 3d shows an HRTEM image of BOM-20 composites. The lattice fringes of 0.37 nm correspond to the (120) facet of α-Bi2O3 [55]. Meanwhile, the tight contact interface between Bi2O3 and MIL101(Fe) can be clearly observed. Furthermore, the elemental mapping images of BOM-20 (Figure 3e–h) reveal the
  • LC–MS, the photocatalytic degradation pathway of CTC was speculated. This work provides an idea for designing and synthesizing MOF-based Z-scheme heterojunction photocatalysts. XRD patterns of MIL101, Bi2O3, and BOM-20. SEM images of (a) MIL101(Fe), (b) Bi2O3, and (c,d) BOM-20. TEM image of (a
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Published 28 Sep 2022

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces

  • Jānis Sniķeris,
  • Vjačeslavs Gerbreders,
  • Andrejs Bulanovs and
  • Ēriks Sļedevskis

Beilstein J. Nanotechnol. 2022, 13, 1004–1010, doi:10.3762/bjnano.13.87

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  • surface as functions of time following chamber decontamination by nitrogen plasma cleaning. Constant EB parameters are: U = 30 kV, I = 55 pA, d = 14 nm, t = 30 s, and α = 0°. A representative AFM image of a nanostructure on an Ag surface after sustaining damage from N plasma cleaning. Constant EB
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Published 22 Sep 2022

Interaction between honeybee mandibles and propolis

  • Leonie Saccardi,
  • Franz Brümmer,
  • Jonas Schiebl,
  • Oliver Schwarz,
  • Alexander Kovalev and
  • Stanislav Gorb

Beilstein J. Nanotechnol. 2022, 13, 958–974, doi:10.3762/bjnano.13.84

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  • studied using a SEM (Hitachi S-4800, Hitachi High-Technologies Corp., Tokyo, Japan) at 3 kV accelerating voltage. Images of the spoon-shaped mandible tip were taken systematically and later assembled into one high resolution image. Higher magnified pictures were taken in characteristic areas of the
  • (Hitachi S-4800, Hitachi High-Technologies Corp., Tokyo, Japan) equipped with a cryopreparation system (Gatan ALTO 2500, Gatan, Inc., Abingdon, UK) at 3 kV accelerating voltage. Image processing SEM images were processed using Gimp, version 2.10.14. All adjustments were applied to the whole image. Color
  • ) Cryo-SEM micrograph of mandible cuticle. The arrowhead indicates the step between two scales. (B) 3D laser scanning microscope image of medial surface of the mandible in the channel area. (C) Profile of scales in along the red arrow in (B). (D) Profile of scales along the blue arrow in (B). Scale bars
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Published 14 Sep 2022

Design of a biomimetic, small-scale artificial leaf surface for the study of environmental interactions

  • Miriam Anna Huth,
  • Axel Huth,
  • Lukas Schreiber and
  • Kerstin Koch

Beilstein J. Nanotechnol. 2022, 13, 944–957, doi:10.3762/bjnano.13.83

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  • image, (b) height image. The white line indicates where the cross section in (c) was made. (c) Cross section. On the left side of each image: glass after the removal of the coating, on the right side: structure of the wax coating. Chemical composition of wheat wax. GH: greenhouse plants (n = 15); OD
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Published 13 Sep 2022

DNA aptamer selection and construction of an aptasensor based on graphene FETs for Zika virus NS1 protein detection

  • Nathalie B. F. Almeida,
  • Thiago A. S. L. Sousa,
  • Viviane C. F. Santos,
  • Camila M. S. Lacerda,
  • Thais G. Silva,
  • Rafaella F. Q. Grenfell,
  • Flavio Plentz and
  • Antero S. R. Andrade

Beilstein J. Nanotechnol. 2022, 13, 873–881, doi:10.3762/bjnano.13.78

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  • layer of SU-8. Figure S1a (Supporting Information File 1) shows an optical microscopy image of the typical CVD graphene device used in this work. The functionalization of the graphene devices with ZIKV60 aptamers was realized by overnight incubation in wet atmosphere with a 5 μL drop of 1 μM ZIKV60
  • a Hill–Langmuir curve fitted to the experimental data (R2 = 0.9969). ZIKV60 aptamer characteristics. Supporting Information Optical microscopy image of our typical CVD graphene device, schematic illustration of the resulting ZIKV60-functionalized graphene devices and experimental setup used in the
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Published 02 Sep 2022

Self-assembly of C60 on a ZnTPP/Fe(001)–p(1 × 1)O substrate: observation of a quasi-freestanding C60 monolayer

  • Guglielmo Albani,
  • Michele Capra,
  • Alessandro Lodesani,
  • Alberto Calloni,
  • Gianlorenzo Bussetti,
  • Marco Finazzi,
  • Franco Ciccacci,
  • Alberto Brambilla,
  • Lamberto Duò and
  • Andrea Picone

Beilstein J. Nanotechnol. 2022, 13, 857–864, doi:10.3762/bjnano.13.76

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  • with previous results [46]. This order extends over large domains (hundreds of square nanometers wide) and tends to disappear as soon as additional molecules are deposited on top of the wetting layer. The formation of a well-ordered ZnTPP film with (5 × 5) periodicity is confirmed by the STM image
  • transform (FFT) calculated from the image reported in Figure 2a. Four hexagonal domains can be identified, differing by their angular orientation with respect to the substrate. Interestingly, the domains do not possess a well-defined epitaxial relation with respect to the (5 × 5) lattice of ZnTPP
  • image charge underneath the metal surface, while, in the latter case, the screening is provided by electric dipoles induced on the organic substrate. In order to evaluate the coupling between C60 and the substrate, it is useful to quantify the reduction of the electronic gap E (or equivalently of the U
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Published 30 Aug 2022

Temperature and chemical effects on the interfacial energy between a Ga–In–Sn eutectic liquid alloy and nanoscopic asperities

  • Yujin Han,
  • Pierre-Marie Thebault,
  • Corentin Audes,
  • Xuelin Wang,
  • Haiwoong Park,
  • Jian-Zhong Jiang and
  • Arnaud Caron

Beilstein J. Nanotechnol. 2022, 13, 817–827, doi:10.3762/bjnano.13.72

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  • surface of the eutectic Ga–In–Sn melt with three AFM tips of different chemistries, namely SiOx, PtSi, and Au. Figure 2 also indicates the surface roughness Rq value for each topography image. We recorded the presented topography images in contact mode by setting and controlling the normal force to Fn = 2
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Published 23 Aug 2022

Efficient liquid exfoliation of KP15 nanowires aided by Hansen's empirical theory

  • Zhaoxuan Huang,
  • Zhikang Jiang,
  • Nan Tian,
  • Disheng Yao,
  • Fei Long,
  • Yanhan Yang and
  • Danmin Liu

Beilstein J. Nanotechnol. 2022, 13, 788–795, doi:10.3762/bjnano.13.69

Graphical Abstract
  • after liquid exfoliation. (e) Width histograms of KP15 nanowires after liquid exfoliation. Sizes of exfoliated KP15 nanowires. (a) Cross section of the KP15 nanowire marked in the upper right corner inset image. (b) Cross section of the KP15 nanowire marked in the upper right corner inset image. (c
  • ) Cross section of the KP15 nanowire marked in the upper right corner inset image. (d) Cross section of the KP15 nanowire marked in the upper right corner inset image. Hansen parameters for the solvents [21]. Supporting Information Supporting Information File 10: Strong temperature-dependent Raman
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Published 17 Aug 2022

Gelatin nanoparticles with tunable mechanical properties: effect of crosslinking time and loading

  • Agnes-Valencia Weiss,
  • Daniel Schorr,
  • Julia K. Metz,
  • Metin Yildirim,
  • Saeed Ahmad Khan and
  • Marc Schneider

Beilstein J. Nanotechnol. 2022, 13, 778–787, doi:10.3762/bjnano.13.68

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  • extract the height image from the force–distance curves acquired at each pixel. Particles were well distributed on substrates showing no agglomeration and a narrow size distribution. GNPs occur with a smooth surface and are spherically shaped when measured under liquid conditions. Particles crosslinked
  • actual sensitivity and the spring constant of the used cantilever were calibrated on a cleaned silica wafer by the thermal noise method by Hutter et al. [27] using a correction factor of 0.251. The data was acquired using the quantitative imaging mode (QI™) with image sizes of 5 × 5 µm and a resolution
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Published 16 Aug 2022

Recent advances in nanoarchitectures of monocrystalline coordination polymers through confined assembly

  • Lingling Xia,
  • Qinyue Wang and
  • Ming Hu

Beilstein J. Nanotechnol. 2022, 13, 763–777, doi:10.3762/bjnano.13.67

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  • macropore. THF is tetrahydrofuran. (b) SEM image of SOM-ZIF-8. (c) Representative SEM images of SOM-ZIF-8. Figure 5 is from [117]. Reprinted with permission from AAAS. This content is not subject to CC BY 4.0. Schematic illustration of a superlattice assembled by DNA-functionalized UiO-66 nanoparticles
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Published 12 Aug 2022

Hierarchical Bi2WO6/TiO2-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

  • Zehao Lin,
  • Zhan Yang and
  • Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

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  • the Bi2WO6/TiO2-NT nanocomposites. The detailed mechanism was revealed in the hierarchical Ag2O-nanoparticle/TiO2-nanotube composite reported by our group [31]. As shown in Figure 4a, the HR-TEM image of the 70%−Bi2WO6/TiO2-NT nanocomposite shows two kinds of lattice fringes with interplanar spacings
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Published 04 Aug 2022

A nonenzymatic reduced graphene oxide-based nanosensor for parathion

  • Sarani Sen,
  • Anurag Roy,
  • Ambarish Sanyal and
  • Parukuttyamma Sujatha Devi

Beilstein J. Nanotechnol. 2022, 13, 730–744, doi:10.3762/bjnano.13.65

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  • GO. The SEM micrograph of ERGO (Figure 3G) also shows graphene sheet exfoliated layers compared to GO (Figure 3F). The FESEM image also depicts the flaked nanostructure of RGO (Figure 3H). Electrochemical characterization of the modified electrode The electronic properties of graphene materials
  • core-level spectrum of (A) C 1s, (B) O 1s for GO, (C) C 1s, and (D) O 1s for ERGO samples, respectively. (A) TEM images of as-synthesized GO, ERGO synthesized in different electrolytes: (B) PBS pH 4.5, (C) pH 7, and (D) pH 9.6. (E) HRTEM image of ERGO in PBS pH 4.5. (F) SEM micrographs of as
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Published 28 Jul 2022

Direct measurement of surface photovoltage by AC bias Kelvin probe force microscopy

  • Masato Miyazaki,
  • Yasuhiro Sugawara and
  • Yan Jun Li

Beilstein J. Nanotechnol. 2022, 13, 712–720, doi:10.3762/bjnano.13.63

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  • long image acquisition time [31] and the need for consecutive experiments in darkness and under illumination. Here, ωm should be set slower than the intrinsic SPV response, which we aim to observe, otherwise the SPV response cannot follow the modulated laser and yields zero amplitude. The spatial and
  • energy resolutions and the image acquisition time of AC-KPFM in the AM mode are comparable to those of the classical KPFM in the AM mode, because both methods detect the electrostatic force, and the response time of the bias feedback τ limits the image acquisition time. To reach sufficient sensitivity
  • classical KPFM. The spatial and energy resolutions and the image acquisition time of AC-KPFM in the FM mode are comparable to those of the classical KPFM in the FM mode, because both methods detect the electrostatic force gradient and the response time of the bias feedback τ limits their image acquisition
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Published 25 Jul 2022

Design and selection of peptides to block the SARS-CoV-2 receptor binding domain by molecular docking

  • Kendra Ramirez-Acosta,
  • Ivan A. Rosales-Fuerte,
  • J. Eduardo Perez-Sanchez,
  • Alfredo Nuñez-Rivera,
  • Josue Juarez and
  • Ruben D. Cadena-Nava

Beilstein J. Nanotechnol. 2022, 13, 699–711, doi:10.3762/bjnano.13.62

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  • range from −2 (red) over 0 (white) to +2 (blue). The orientation of the molecule is rotated by about 90° along the z-axis of image (a) to show the RBD surface that binds to the ACE2 cell receptor. Image modified from PDB 6VYB [3]. Peptide candidates (blue) docked to the SARS-CoV-2 RBD (white). (a) ACE2
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Published 22 Jul 2022

Experimental and theoretical study of field-dependent spin splitting at ferromagnetic insulator–superconductor interfaces

  • Peter Machon,
  • Michael J. Wolf,
  • Detlef Beckmann and
  • Wolfgang Belzig

Beilstein J. Nanotechnol. 2022, 13, 682–688, doi:10.3762/bjnano.13.60

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  • of the ferromagnetic insulator europium sulfide. Figure 4 shows a false-color scanning electron microscopy image of the sample, together with the experimental scheme. The sample was fabricated in a two-step procedure: First, a EuS film of 44 nm thickness was created by e-beam evaporation of EuS onto
  • microscopy image of the sample and experimental scheme. (a) Differential conductance g as a function of the bias V for different applied magnetic fields B (symbols), and fits with our model (lines). (b) Spin mixing angle δφ (left axis) and pair potential Δ (right axis) as functions of the applied field B
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Published 20 Jul 2022

Antibacterial activity of a berberine nanoformulation

  • Hue Thi Nguyen,
  • Tuyet Nhung Pham,
  • Anh-Tuan Le,
  • Nguyen Thanh Thuy,
  • Tran Quang Huy and
  • Thuy Thi Thu Nguyen

Beilstein J. Nanotechnol. 2022, 13, 641–652, doi:10.3762/bjnano.13.56

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  • explained by the formation of hydrogen bonds between the oxygen-containing groups (methoxy and furyl groups) of BBR and the –OH group of glycerol in water [38]. Morphology and size distribution of BBR NPs The SEM image (Figure 3a) shows that pure BBR forms tightly agglomerated rods with rectangular cross
  • image of MRSA. The image is unclear because the bacterial cells are not self-fluorescent under excitation. In contrast, after incubation with BBR NPs, the BBR molecules adhered to the bacterial cell walls exhibited fluorescence (Figure 7b) upon UV excitation [44]. In our experiment, the samples used for
  • sectioning to observe their ultrastructure under the transmission electron microscope. Figure 7c shows a cross-sectional image of MRSA cells under the impact of BBR NPs. The image shows that BBR NPs surround the bacterial wall and adhere to it. At the binding sites, the outer layer of the bacterial wall
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Published 11 Jul 2022

Sodium doping in brookite TiO2 enhances its photocatalytic activity

  • Boxiang Zhuang,
  • Honglong Shi,
  • Honglei Zhang and
  • Zeqian Zhang

Beilstein J. Nanotechnol. 2022, 13, 599–609, doi:10.3762/bjnano.13.52

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  • , the Na doping in the Ti site will destroy the local atomic arrangement of the brookite phase and produce some microstructures. Figure 6a displays a typical high-resolution transmission electron microscopy (HRTEM) image of the sample calcinated at 400 °C, oriented at the [121]Brookite zone axis. The
  • crystallite exhibits a core–shell-like structure (i.e., a shell with a non-uniform thickness of ≈1–6 nm which grows around a core of ≈25 nm in width). Figure 6b shows a magnified image of the core–shell boundary (the dashed box in Figure 6a). The shell is a squared Ti–O structure (≈1.9 Å between the
  • , where the inset illustrates the local atomic structures of brookite. (a) An HRTEM image exhibits the core–shell structure in a brookite crystallite calcinated at 400 °C. (b) The magnified HRTEM image in the dashed box shows an atom-splitting effect. (b1–b2) The Fourier transformation diffractogram of
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Published 05 Jul 2022
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