Search results

Search for "TEM" in Full Text gives 823 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Amorphized length and variability in phase-change memory line cells

  • Nafisa Noor,
  • Sadid Muneer,
  • Raihan Sayeed Khan,
  • Anna Gorbenko and
  • Helena Silva

Beilstein J. Nanotechnol. 2020, 11, 1644–1654, doi:10.3762/bjnano.11.147

Graphical Abstract
  • essential physical parameter that contributes to the programming variability is the random location and dimensions of different phases formed in the cell. The amorphous and crystalline regions in PCM devices can be distinguished by transmission electron microscopy (TEM) imaging [8]. However, this is a
  • difficult and time-consuming process, and the sample preparation and imaging processes themselves may disturb the state of the material [9][10]. Hence, TEM becomes impractical for variability analysis using a large number of devices. In this study, the length values of the amorphized regions are calculated
PDF
Album
Full Research Paper
Published 29 Oct 2020

Oxidation of Au/Ag films by oxygen plasma: phase separation and generation of nanoporosity

  • Abdel-Aziz El Mel,
  • Said A. Mansour,
  • Mujaheed Pasha,
  • Atef Zekri,
  • Janarthanan Ponraj,
  • Akshath Shetty and
  • Yousef Haik

Beilstein J. Nanotechnol. 2020, 11, 1608–1614, doi:10.3762/bjnano.11.143

Graphical Abstract
  • formation of unique features, consisting of silver oxide nanoporous microspheres (Figure 1). Our observation was supported by various characterization techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction spectroscopy (XRD). We conducted our
PDF
Album
Full Research Paper
Published 22 Oct 2020

High-responsivity hybrid α-Ag2S/Si photodetector prepared by pulsed laser ablation in liquid

  • Raid A. Ismail,
  • Hanan A. Rawdhan and
  • Duha S. Ahmed

Beilstein J. Nanotechnol. 2020, 11, 1596–1607, doi:10.3762/bjnano.11.142

Graphical Abstract
  • ) mixed with cationic cetyltrimethylammonium bromide (CTAB) as surfactant. The effect of the CTAB surfactant on the structural, morphological, optical, and elemental composition of Ag2S NPs was evaluated using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy
  • , Shimadzu) was employed to estimate the chemical composition of the Ag2S NPs. The morphology and size of the nanocrystals were examined via transmission electron microscopy (TEM; EM208, Philips). Raman spectroscopy was performed on colloidal Ag2S and thiourea solution using a Raman spectrometer (Bruker
  • addition of the CTAB surfactant [23]. The presence of these new peaks was due to the addition of the surfactant, which modified the morphology of the structure. The NPs became nearly spherical, as described in the TEM analysis. These results revealed that the cationic surfactant CTAB substantially
PDF
Album
Full Research Paper
Published 21 Oct 2020

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

  • Matías Guerrero Correa,
  • Fernanda B. Martínez,
  • Cristian Patiño Vidal,
  • Camilo Streitt,
  • Juan Escrig and
  • Carol Lopez de Dicastillo

Beilstein J. Nanotechnol. 2020, 11, 1450–1469, doi:10.3762/bjnano.11.129

Graphical Abstract
PDF
Album
Review
Published 25 Sep 2020

One-step synthesis of carbon-supported electrocatalysts

  • Sebastian Tigges,
  • Nicolas Wöhrl,
  • Ivan Radev,
  • Ulrich Hagemann,
  • Markus Heidelmann,
  • Thai Binh Nguyen,
  • Stanislav Gorelkov,
  • Stephan Schulz and
  • Axel Lorke

Beilstein J. Nanotechnol. 2020, 11, 1419–1431, doi:10.3762/bjnano.11.126

Graphical Abstract
  • illustrated in Figure 1. For details on the experimental procedures, see the Experimental section. A typical CNW sheet of a sample processed at 8 Pa chamber pressure, 60 sccm argon carrier gas flow rate, and 350 °C substrate temperature is shown in a bright-field transmission electron microscope (TEM
  • ) micrograph in Figure 2a. Pt-NPs (black dots) are homogeneously distributed across the entire porous carbon sheet (grey areas). The porosity of the support can be observed in the dark-field TEM micrograph (Figure 2b) and has been reported to be beneficial in electrocatalysis, as it reduces mass transport
  • imaging (such as TEM), ultrahigh resolution TEM images prove the formation of embedded Pt-NPs in the carbon matrix by resolving individual carbon layers, which are affected by the Pt-NP. In the left frame of Figure 3, it can be seen that the Pt-NP (blue) interrupts/disturbs some of the carbon layers
PDF
Album
Supp Info
Full Research Paper
Published 17 Sep 2020

Transient coating of γ-Fe2O3 nanoparticles with glutamate for its delivery to and removal from brain nerve terminals

  • Konstantin Paliienko,
  • Artem Pastukhov,
  • Michal Babič,
  • Daniel Horák,
  • Olga Vasylchenko and
  • Tatiana Borisova

Beilstein J. Nanotechnol. 2020, 11, 1381–1393, doi:10.3762/bjnano.11.122

Graphical Abstract
  • investigated by transmission electron microscopy (TEM; JEOL JEM 200 CX). The number-average diameter (Dn) was calculated by the measurement of at least 800 particles from different microphotographs of the same sample using the IMAGEJ program. Dn = ΣNiDi/ΣNi, where Ni is the number of particles with the
  • different media Nanoparticles of γ-Fe2O3 were prepared by the coprecipitation method and oxidation with sodium hypochlorite. According to TEM (dry samples, Figure 1), they have a size Dn = 9.7 nm and a dispersity Ð = 1.21. According to DLS, the hydrodynamic size of newly synthesized nanoparticles was Dh
  • media measured using laser correlation spectroscopy Nanoparticle distribution by intensity was measured using dynamic light scattering. Peak analysis (intensity) revealed that the overall mean was 171 nm in water (Figure 6a), which is a higher value than that according to the TEM micrographs (10 nm) [21
PDF
Album
Supp Info
Full Research Paper
Published 10 Sep 2020

Analysis of catalyst surface wetting: the early stage of epitaxial germanium nanowire growth

  • Owen C. Ernst,
  • Felix Lange,
  • David Uebel,
  • Thomas Teubner and
  • Torsten Boeck

Beilstein J. Nanotechnol. 2020, 11, 1371–1380, doi:10.3762/bjnano.11.121

Graphical Abstract
  • electron microscopy (TEM) images of gold particles formed on a silicon substrate at room temperature. Small gold clusters (<10 nm) are also seen between the droplets. Growth of germanium nanowires Figure 4 shows images of the resulting gold droplets on various substrates and the results after deposition of
  • these clusters or if it just becomes thinner or perforated. However, the TEM data do not show any evidence of a wetting layer at room temperature, since at this temperature only very small gold clusters are seen. This is in agreement with low-energy electron microscopy (LEEM) calculations, which predict
  • Gaussian function. For Au on Si the distribution is given by a Lifshitz–Slyosov–Wagner (LSW) expression. SEM image of gold on silicon after the system reached room temperature. The inset shows a TEM image, in which small gold clusters nucleated on the silicon surface between the droplets can be seen. SEM
PDF
Album
Supp Info
Full Research Paper
Published 09 Sep 2020

Structure and electrochemical performance of electrospun-ordered porous carbon/graphene composite nanofibers

  • Yi Wang,
  • Yanhua Song,
  • Chengwei Ye and
  • Lan Xu

Beilstein J. Nanotechnol. 2020, 11, 1280–1290, doi:10.3762/bjnano.11.112

Graphical Abstract
  • electron microscopy (SEM) under a field-emission scanning electron microscope (FE-SEM) (Hitachi, S4800, Japan). The structural characteristics of the CNFs were observed via transmission electron microscopy (TEM) (FEI, Tecnai G20, Japan). The diameter values of the CNFs were measured using ImageJ software
  • the electrode alternating current (AC) were performed at frequencies ranging from 0.01 Hz to 100 kHz. Results and Discussion The surface and cross-section morphologies of the CNFs before and after carbonization were examined via SEM and TEM, respectively, as shown in Figure 2. According to Figure 2a
  • distribution of graphene in PCGNFs and CCGNFs was determined via TEM (Figure 2h and Figure 2i, respectively). The results show that graphene was successfully introduced in the CNFs and arranged in an orderly manner along the CNF axes. Moreover, the CGCNF TEM micrograph indicated that there was an apparent
PDF
Album
Full Research Paper
Published 27 Aug 2020

An atomic force microscope integrated with a helium ion microscope for correlative nanoscale characterization

  • Santiago H. Andany,
  • Gregor Hlawacek,
  • Stefan Hummel,
  • Charlène Brillard,
  • Mustafa Kangül and
  • Georg E. Fantner

Beilstein J. Nanotechnol. 2020, 11, 1272–1279, doi:10.3762/bjnano.11.111

Graphical Abstract
  • have previously been difficult to obtain as sample preparation of such samples for SEM or TEM are often incompatible with the needs of high-resolution AFM measurements. AFM is also useful in assisting helium ion beam lithography. Many resists, including poly(methyl methacrylate) (PMMA), have higher
PDF
Album
Full Research Paper
Published 26 Aug 2020

Magnetic-field-assisted synthesis of anisotropic iron oxide particles: Effect of pH

  • Andrey V. Shibaev,
  • Petr V. Shvets,
  • Darya E. Kessel,
  • Roman A. Kamyshinsky,
  • Anton S. Orekhov,
  • Sergey S. Abramchuk,
  • Alexei R. Khokhlov and
  • Olga E. Philippova

Beilstein J. Nanotechnol. 2020, 11, 1230–1241, doi:10.3762/bjnano.11.107

Graphical Abstract
  • comparable amounts of reacting ions (R = 2.1) will be described and then compared with the case in which hydroxyl ions are in large excess (R = 8). Comparable amounts of hydroxyl and iron ions (R = 2.1) According to the transmission electron microscopy (TEM) images (Figure 2A), the black precipitate formed
  • the coexistence between small spherical particles (giving diffraction rings) and larger rod-like particles (contributing mostly to point reflexes), as confirmed by TEM images taken in the dark-field mode. Almost all of the point reflexes are localized in the magnetite rings, confirming that spherical
  • precipitate formed in the reaction mixture is also black and magnetic. TEM data (Figure 2B) show that, in this case, only isotropic nanoparticles are synthesized and their mean diameter is 11 nm (Figure 3A). The main nanoparticle fraction has a diameter of 8.2 nm, similar to the spherical particles coexisting
PDF
Album
Supp Info
Full Research Paper
Published 17 Aug 2020

3D superconducting hollow nanowires with tailored diameters grown by focused He+ beam direct writing

  • Rosa Córdoba,
  • Alfonso Ibarra,
  • Dominique Mailly,
  • Isabel Guillamón,
  • Hermann Suderow and
  • José María De Teresa

Beilstein J. Nanotechnol. 2020, 11, 1198–1206, doi:10.3762/bjnano.11.104

Graphical Abstract
  • experiments, NWs were directly grown on Cu TEM grids. Typical deposition conditions used for the He+ FIBID process were as follows; precursor material: tungsten hexacarbonyl, W(CO)6; Tprecursor = 55 °C; GISneedle diameter ≈ 500 µm; GISz ≈ 500 µm; GISx,y ≈ 60 µm; Pbase ≈ 3 × 10−7 mbar; Pprocess ≈ 4 × 10−6 mbar
PDF
Album
Supp Info
Full Research Paper
Published 11 Aug 2020

Revealing the local crystallinity of single silicon core–shell nanowires using tip-enhanced Raman spectroscopy

  • Marius van den Berg,
  • Ardeshir Moeinian,
  • Arne Kobald,
  • Yu-Ting Chen,
  • Anke Horneber,
  • Steffen Strehle,
  • Alfred J. Meixner and
  • Dai Zhang

Beilstein J. Nanotechnol. 2020, 11, 1147–1156, doi:10.3762/bjnano.11.99

Graphical Abstract
  • growth. However, it is worth mentioning that other mechanisms of Pt-catalyzed growth of nanowires were also previously observed [29]. The overall morphology of the SiNWs was investigated by transmission electron microscopy (TEM). The high-resolution TEM investigation of the core area indicates that the
  • comes from the full width at the half maximum (FWHM) of the Raman peaks. Both a-Si and c-Si peaks are significantly broader, 25% and 13%, respectively, at the location marked by the orange dot. These results agree well with the morphology revealed in the high-resolution TEM images (Figure 1c) since the
  • agrees with the TEM image in Figure 1c, where a homogenous presence of the amorphous component in the shell can be seen. In contrast, the intensity of the c-Si peak (Figure 3e) shows a clear decrease at the lower part of the SiNW. This could originate from a defect, visible as the ring-shaped pattern in
PDF
Album
Supp Info
Full Research Paper
Published 31 Jul 2020

Straightforward synthesis of gold nanoparticles by adding water to an engineered small dendrimer

  • Sébastien Gottis,
  • Régis Laurent,
  • Vincent Collière and
  • Anne-Marie Caminade

Beilstein J. Nanotechnol. 2020, 11, 1110–1118, doi:10.3762/bjnano.11.95

Graphical Abstract
  • when the powdered form of this dendrimer was dissolved in water, as shown by transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) analyses. The dendrimers acted simultaneously as mild reducers and as nanoreactors, favoring the self-assembly of gold atoms and promoting
  • electron microscopy (TEM) images were obtained from a drop of a colloidal suspension of compound 4 in water (Figure 3). Figure 3A displays images of the NPs with diameters ranging from 20 to 50 nm (mean value is 28 nm, Figure 3F). It can be seen from Figure 3B that these nanoparticles have a variety of
  • performed in parallel with TEM. All the characteristic X-ray lines expected from the gold L and M series were observed when focusing on the gold nanoparticles (Figure 4A). The signals obtained from the background (close to the nanoparticles) showed phosphorus and sulfur atoms both coming from the dendrimers
PDF
Album
Supp Info
Letter
Published 28 Jul 2020

A few-layer graphene/chlorin e6 hybrid nanomaterial and its application in photodynamic therapy against Candida albicans

  • Selene Acosta,
  • Carlos Moreno-Aguilar,
  • Dania Hernández-Sánchez,
  • Beatriz Morales-Cruzado,
  • Erick Sarmiento-Gomez,
  • Carla Bittencourt,
  • Luis Octavio Sánchez-Vargas and
  • Mildred Quintana

Beilstein J. Nanotechnol. 2020, 11, 1054–1061, doi:10.3762/bjnano.11.90

Graphical Abstract
  • concentration of Ce6 in FLG-Ce6, the absorption of FLG at 407 nm, under the same experimental conditions, is subtracted from the absorption obtained from the solution of FLG-Ce6 and finally matched with the calibration curve of Ce6. Figure 1a shows transmission electron microscopy (TEM) images of FLG-Ce6
  • negatively affected, resulting in the interaction by H-bond formation. Thus, FLG and Ce6 interact by means of π–π stacking, Ce6–Ce6 transition dipole, hydrogen bond formation, hydrophobic, and electron-donor interactions [36]. The observed changes in the UV–vis spectrum of FLG- Ce6 corroborates the TEM
  • measurements, dual beam charge neutralization composed of an electron gun (≈1 eV) and an argon ion gun (≤10 eV) was used. The XPS spectra were deconvoluted using commercially available software (CASA-XPS). TEM images were obtained using a JEOL JEM-2100 instrument with a voltage acceleration of 200 kV. The
PDF
Album
Full Research Paper
Published 17 Jul 2020

Microwave-induced electric discharges on metal particles for the synthesis of inorganic nanomaterials under solvent-free conditions

  • Vijay Tripathi,
  • Harit Kumar,
  • Anubhav Agarwal and
  • Leela S. Panchakarla

Beilstein J. Nanotechnol. 2020, 11, 1019–1025, doi:10.3762/bjnano.11.86

Graphical Abstract
  • the phase purity of ZnF2. Figure S6 in Supporting Information File 1 shows the SEM and transmission electron microscopy (TEM) images of ZnF2 nanorods produced in the presence of sulfur. The SEM images indicate the high yield of ZnF2 nanorods. The high-resolution TEM (HRTEM) image in Figure S6d
  • experiment without sulfur yielded only Ni nanoparticles. Figure S7 in Supporting Information File 1 shows SEM and TEM images of NiF2 nanorods. The EDS mapping in Figure S7c (Supporting Information File 1) confirms the presence of Ni, F and C in the NiF2 nanorods. A TEM image of NiF2 nanorod covered with
  • SEM image in Figure 4b and the TEM image in Figure 4c confirm the one-dimensional nature. CuS nanorods are single-crystalline as can be seen from the HRTEM image in Figure 4d. CuS nanorods were found to grow along the [101] direction. The average core diameter of the CuS nanorods is about 25 nm and
PDF
Album
Supp Info
Full Research Paper
Published 13 Jul 2020

Uniform Fe3O4/Gd2O3-DHCA nanocubes for dual-mode magnetic resonance imaging

  • Miao Qin,
  • Yueyou Peng,
  • Mengjie Xu,
  • Hui Yan,
  • Yizhu Cheng,
  • Xiumei Zhang,
  • Di Huang,
  • Weiyi Chen and
  • Yanfeng Meng

Beilstein J. Nanotechnol. 2020, 11, 1000–1009, doi:10.3762/bjnano.11.84

Graphical Abstract
  • FGOA nanocubes were obtained by refluxing the metal oleate mixtures at 310 °C for 30 min. According to the TEM pictures (Figure 2a,d), the FGOA nanocubes were 7.44 ± 0.10 nm in one dimension and showed monodispersity. After the ligand-exchange treatment, the FGDA nanocubes became slightly smaller
  • cooling down, NaOH was added to the reaction to precipitate the FGDA nanocubes, which were pooled by centrifugation and resuspended in ultrapure water to be used in in vivo MRI experiments. TEM and HRTEM images of FGOA (a) and FGDA (b, c) nanocubes with their respective size distributions (d, e). (f) The
PDF
Album
Full Research Paper
Published 08 Jul 2020

Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers

  • Stefanie Schlicht,
  • Korcan Percin,
  • Stefanie Kriescher,
  • André Hofer,
  • Claudia Weidlich,
  • Matthias Wessling and
  • Julien Bachmann

Beilstein J. Nanotechnol. 2020, 11, 952–959, doi:10.3762/bjnano.11.79

Graphical Abstract
  • particular, we have determined particle sizes by transmission electron microscopy (TEM), investigated the homogeneously mixed nature of the Pt/Ir catalyst by X-ray diffraction (XRD), selected-area electron diffraction (SAED), and X-ray photoelectron spectroscopy (XPS). We have also examined various ALD
PDF
Album
Full Research Paper
Published 22 Jun 2020

Nickel nanoparticles supported on a covalent triazine framework as electrocatalyst for oxygen evolution reaction and oxygen reduction reactions

  • Secil Öztürk,
  • Yu-Xuan Xiao,
  • Dennis Dietrich,
  • Beatriz Giesen,
  • Juri Barthel,
  • Jie Ying,
  • Xiao-Yu Yang and
  • Christoph Janiak

Beilstein J. Nanotechnol. 2020, 11, 770–781, doi:10.3762/bjnano.11.62

Graphical Abstract
  • wt %), the characteristic broad reflections for amorphous CTF could also be seen. Size and morphology of the synthesized Ni NPs on CTFs were characterized by transmission electron microscopy (TEM) and SEM. Figure 2 shows TEM images of Ni/CTF-1-600-22 recorded at different magnifications. Ni
  • aggregates with an average diameter of 72 ± 16 nm (see Figure S9, Supporting Information File 1 for size distributions). In high-resolution TEM images of the primary small Ni NPs (Figure 2d), interplanar spacings of the lattice fringes of 0.21 nm and 0.23 nm could be measured, which corresponds to the {111
  • the TEM images (Figure 2) can be either their small size or the fact that they lie between the CTF sheets (Figure S10c, Supporting Information File 1). Additional EDX studies (Figure S12, Supporting Information File 1) showed a higher content of Ni in the “brighter” agglomerates (point 1), as well as
PDF
Album
Supp Info
Full Research Paper
Published 11 May 2020

Hexagonal boron nitride: a review of the emerging material platform for single-photon sources and the spin–photon interface

  • Stefania Castelletto,
  • Faraz A. Inam,
  • Shin-ichiro Sato and
  • Alberto Boretti

Beilstein J. Nanotechnol. 2020, 11, 740–769, doi:10.3762/bjnano.11.61

Graphical Abstract
PDF
Album
Review
Published 08 May 2020

Quantitative determination of the interaction potential between two surfaces using frequency-modulated atomic force microscopy

  • Nicholas Chan,
  • Carrie Lin,
  • Tevis Jacobs,
  • Robert W. Carpick and
  • Philip Egberts

Beilstein J. Nanotechnol. 2020, 11, 729–739, doi:10.3762/bjnano.11.60

Graphical Abstract
  • spectroscopy measurements in an ultrahigh vacuum (UHV) environment. The tip geometry, which is initially unknown and potentially irregularly shaped, is determined using transmission electron microscopy (TEM) imaging. It is then used to generate theoretical interaction force–displacement relations, which are
  • generated using the 6-12 LJ pair potential form and experimental tip apex geometry, which was extracted from two-dimensional transmission electron microscopy (TEM) images. In prior works, the shapes of AFM probes have been determined using field ion microscopy (FIM) [39], atom probe tomography (APT) [40
  • ] and transmission electron microscopy (TEM) [35]. Each technique has strengths and weaknesses: FIM has can resolve the exact atomic structure of the tip apex, but only for conductive tips; APT combines FIM with atom identification, but is a destructive technique; and TEM has less restrictions on the
PDF
Album
Full Research Paper
Published 06 May 2020

Effect of Ag loading position on the photocatalytic performance of TiO2 nanocolumn arrays

  • Jinghan Xu,
  • Yanqi Liu and
  • Yan Zhao

Beilstein J. Nanotechnol. 2020, 11, 717–728, doi:10.3762/bjnano.11.59

Graphical Abstract
  • particles inside the nanocolumn array were observed by TEM. We also studied the crystal structure of the TiO2 nanocolumns. Figure 4 shows the TEM and high-resolution spectra of the nanocolumn structure. Figure 4a shows the bare TiO2 nanocolumns without Ag. It can be seen from the figure that the size of the
  • nanocolumns conforms to the structural parameters of the AAO template. Figure 4b shows the diffraction pattern of TiO2 nanocolumns. According to diffraction spot analysis, it can be found that the prepared TiO2 has a polycrystalline structure. Figure 4c is a TEM image of the nanopillars of the AFT structure
  • . It can be seen from the figure that tiny Ag nanoparticles are supported on the TiO2 columns. Figure 4d shows the high-resolution TEM image of the Ag nanocolumns shown in Figure 4c. After removing the noise by performing Fourier transform on the selected area using software, we can clearly see lattice
PDF
Album
Full Research Paper
Published 05 May 2020

Electromigration-induced directional steps towards the formation of single atomic Ag contacts

  • Atasi Chatterjee,
  • Christoph Tegenkamp and
  • Herbert Pfnür

Beilstein J. Nanotechnol. 2020, 11, 680–687, doi:10.3762/bjnano.11.55

Graphical Abstract
  • formation of point contacts. But such studies are difficult in case of EM experiments. There were attempts to record real-time SEM and TEM of EM junctions [18][19][20], but these imaging studies did not observe the conductance states at the semi-classical range just prior to point contact formation. In our
PDF
Album
Full Research Paper
Published 22 Apr 2020

Exfoliation in a low boiling point solvent and electrochemical applications of MoO3

  • Matangi Sricharan,
  • Bikesh Gupta,
  • Sreejesh Moolayadukkam and
  • H. S. S. Ramakrishna Matte

Beilstein J. Nanotechnol. 2020, 11, 662–670, doi:10.3762/bjnano.11.52

Graphical Abstract
  • preheated oven. The remaining MoO3 powder in the beaker was weighed to determine the concentration. The morphology of MoO3 flakes was characterized using field-emission scanning electron microscopy (FESEM; Tescan Mira3), transmission electron microscopy (TEM; FEI Talos, 200 kV) and atomic force microsopy
  • (AFM; Agilent 5500). Samples for FESEM and AFM were prepared by dripping 10 µL of MoO3 dispersion (diluted 100 times) onto a Si/SiO2 (300 nm) substrate while samples for TEM were prepared by dripping 10 µL of the diluted dispersion on a 300 mesh lacey carbon grid. Raman spectra (Horiba LABRam HR) of
  • under identical experimental conditions (Supporting Information File 1, Figure S2) [20]. The structural and chemical nature of the exfoliated MoO3 nanosheets was determined using microscopic and spectroscopic techniques. The two-dimensional nature of MoO3 is demonstrated in the TEM micrograph in Figure
PDF
Album
Supp Info
Letter
Published 17 Apr 2020

Silver-decorated gel-shell nanobeads: physicochemical characterization and evaluation of antibacterial properties

  • Marta Bartel,
  • Katarzyna Markowska,
  • Marcin Strawski,
  • Krystyna Wolska and
  • Maciej Mazur

Beilstein J. Nanotechnol. 2020, 11, 620–630, doi:10.3762/bjnano.11.49

Graphical Abstract
  • cations. After separation of the resulting material through centrifugation it was examined with TEM (Figure 4). The image clearly shows that the polymer particles retain their spherical shape and their size (ca. 80 nm) while being uniformly decorated with silver nanoparticles (seen as small black dots
  • ; the magnification of an individual nanosphere is shown as the inset in Figure 4). The average diameter of the nanoparticles is approximately 5 nm (a corresponding histogram of the size distribution is shown in Figure 4b). Unfortunately, the TEM image does not allow us to discriminate whether the
  • . Scheme of the preparation of sulfonated polystyrene beads with embedded silver nanoparticles. SEM image of sulfonated polystyrene beads. FTIR spectrum of sulfonated polystyrene nanobeads. (A) TEM image of sulfonated polystyrene beads modified with silver nanoparticles and (B) size distribution histogram
PDF
Album
Full Research Paper
Published 14 Apr 2020

Soybean-derived blue photoluminescent carbon dots

  • Shanshan Wang,
  • Wei Sun,
  • Dong-sheng Yang and
  • Fuqian Yang

Beilstein J. Nanotechnol. 2020, 11, 606–619, doi:10.3762/bjnano.11.48

Graphical Abstract
  • microscope (TEM) (JEOL 2010F). ImageJ software was used to analyze the TEM images and to determine the distribution of particle sizes for the calculation of average particle size. The X-ray photoelectron spectroscopy (XPS) analysis of the prepared carbon nanoparticles was conducted on a Thermo Scientific K
  • . Results Figure 2 shows TEM images of the soybean-derived nanoparticles and the corresponding size distribution. All the nanoparticles are of polygonal shape (Figure 2a–c), suggesting that the annealing at high temperatures and the laser ablation did not cause any significant changes to the morphology of
  • depicted in Figure 2d–f, which was determined from the TEM images via the software of ImageJ. Slight differences are observed in the shapes of the size distribution among the HTC-CDs, annealed-CDs and LA-CDs-10%. The histogram of the HTC-CDs has a long tail in the distribution; the histogram of the
PDF
Album
Supp Info
Full Research Paper
Published 09 Apr 2020
Other Beilstein-Institut Open Science Activities