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Search for "field emission" in Full Text gives 287 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Low cost tips for tip-enhanced Raman spectroscopy fabricated by two-step electrochemical etching of 125 µm diameter gold wires

  • Antonino Foti,
  • Francesco Barreca,
  • Enza Fazio,
  • Cristiano D’Andrea,
  • Paolo Matteini,
  • Onofrio Maria Maragò and
  • Pietro Giuseppe Gucciardi

Beilstein J. Nanotechnol. 2018, 9, 2718–2729, doi:10.3762/bjnano.9.254

Graphical Abstract
  • drops of HCl and rinsing in ethanol and water. This eliminates residual impurities from the surface. Scanning electron microscopy (SEM) inspection of the produced tips is carried out to characterize the tip apex using a Zeiss Merlin field emission electron microscope, equipped with a Gemini II column
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Published 22 Oct 2018

Silencing the second harmonic generation from plasmonic nanodimers: A comprehensive discussion

  • Jérémy Butet,
  • Gabriel D. Bernasconi and
  • Olivier J. F. Martin

Beilstein J. Nanotechnol. 2018, 9, 2674–2683, doi:10.3762/bjnano.9.250

Graphical Abstract
  • emission, meaning that these SH sources do not really contribute to the far-field emission and can even interfere destructively with other sources. Considering the SH sources in the nanogap only (coverage of 25%), the far-field SH intensity drops by a factor 7 for a gap g = 5 nm and by a factor 10 for a
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Published 15 Oct 2018

Enhanced antineoplastic/therapeutic efficacy using 5-fluorouracil-loaded calcium phosphate nanoparticles

  • Shanid Mohiyuddin,
  • Saba Naqvi and
  • Gopinath Packirisamy

Beilstein J. Nanotechnol. 2018, 9, 2499–2515, doi:10.3762/bjnano.9.233

Graphical Abstract
  • with an approximate diameter of 160–180 nm was confirmed by different methods. The physicochemical characterization of the synthesized CaP@5-FU NPs was done with transmission electron microscopy (TEM), dynamic light scattering (DLS), field emission scanning electron microscopy (FE-SEM), Fourier
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Published 20 Sep 2018

Thickness-dependent photoelectrochemical properties of a semitransparent Co3O4 photocathode

  • Malkeshkumar Patel and
  • Joondong Kim

Beilstein J. Nanotechnol. 2018, 9, 2432–2442, doi:10.3762/bjnano.9.228

Graphical Abstract
  • microscope (XRD, Rigaku, SmartLab) (Cu Kα radiation, λ = 1.540598 Å, in grazing mode with a glancing angle of 0.5°, step size of 0.05°, and a 2θ range of 10–80°) as well as a field-emission transmission electron microscope (FETEM, JEOL, JEM-2100F) were used. Cross-sectional TEM samples were prepared using a
  • films were characterized using a surface profiler (Vecco, Dektak XT-E). The planar and cross-sectional morphologies were analysed using a field-emission scanning electron microscope (FESEM, JEOL, JSM_7800F) with 5 kV of field voltage, using an SE2 secondary detector. Optical characterization was carried
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Published 12 Sep 2018

Hydrothermal-derived carbon as a stabilizing matrix for improved cycling performance of silicon-based anodes for lithium-ion full cells

  • Mirco Ruttert,
  • Florian Holtstiege,
  • Jessica Hüsker,
  • Markus Börner,
  • Martin Winter and
  • Tobias Placke

Beilstein J. Nanotechnol. 2018, 9, 2381–2395, doi:10.3762/bjnano.9.223

Graphical Abstract
  • range between 25 °C and 800 °C on a TGA Q500 (TA Instruments) in an oxygen/nitrogen atmosphere (nitrogen flow: 10 mL min−1, oxygen flow: 25 mL min−1) in order to determine the Si content. A heating ramp of 20 °C min−1 was applied. Scanning electron microscopy (SEM) with a field emission gun (Schottky
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Published 05 Sep 2018

Directional light beams by design from electrically driven elliptical slit antennas

  • Shuiyan Cao,
  • Eric Le Moal,
  • Quanbo Jiang,
  • Aurélien Drezet,
  • Serge Huant,
  • Jean-Paul Hugonin,
  • Gérald Dujardin and
  • Elizabeth Boer-Duchemin

Beilstein J. Nanotechnol. 2018, 9, 2361–2371, doi:10.3762/bjnano.9.221

Graphical Abstract
  • excitation of structure 8 (see Table 1) at the focus F(−c,0). Figure 5 shows the effect of the SPP source location on the far-field emission pattern. The emission of light from an elliptical slit (structure 8 in Table 1) is obtained using the STM nanosource at different positions along the major axis of the
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Published 03 Sep 2018

Magnetism and magnetoresistance of single Ni–Cu alloy nanowires

  • Andreea Costas,
  • Camelia Florica,
  • Elena Matei,
  • Maria Eugenia Toimil-Molares,
  • Ionel Stavarache,
  • Andrei Kuncser,
  • Victor Kuncser and
  • Ionut Enculescu

Beilstein J. Nanotechnol. 2018, 9, 2345–2355, doi:10.3762/bjnano.9.219

Graphical Abstract
  • 620 equipment situated into a cleanroom class 100 (ISO EN 14644) with RF magnetron sputtering and thermal vacuum evaporation (using TECTRA equipment). Thus, to contact single Ni–Cu alloy nanowires using a typical EBL process (Zeiss Merlin Compact field-emission scanning electron microscope combined
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Published 30 Aug 2018

The role of adatoms in chloride-activated colloidal silver nanoparticles for surface-enhanced Raman scattering enhancement

  • Nicolae Leopold,
  • Andrei Stefancu,
  • Krisztian Herman,
  • István Sz. Tódor,
  • Stefania D. Iancu,
  • Vlad Moisoiu and
  • Loredana F. Leopold

Beilstein J. Nanotechnol. 2018, 9, 2236–2247, doi:10.3762/bjnano.9.208

Graphical Abstract
  • transmission electron microscope (STEM), equipped with a cold field emission gun, working at an acceleration voltage of 200 kV. The absorption spectra were recorded with a Jasco V-630 UV–vis spectrometer at 1 nm spectral resolution. Raman and SERS spectra were obtained with a Renishaw InVia Raman microscope
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Published 22 Aug 2018

Spin-coated planar Sb2S3 hybrid solar cells approaching 5% efficiency

  • Pascal Kaienburg,
  • Benjamin Klingebiel and
  • Thomas Kirchartz

Beilstein J. Nanotechnol. 2018, 9, 2114–2124, doi:10.3762/bjnano.9.200

Graphical Abstract
  • MoOx forms a tunneling junction with the HTM is typical for organic solar cells in an n-i-p configuration. The cell area was 0.16 cm2. Layer and device characterization: The scanning electron microscope was a Zeiss (Leo) Gemini 1550 with Shottky field-emission cathode and an in-lens detector. The
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Published 08 Aug 2018

The structural and chemical basis of temporary adhesion in the sea star Asterina gibbosa

  • Birgit Lengerer,
  • Marie Bonneel,
  • Mathilde Lefevre,
  • Elise Hennebert,
  • Philippe Leclère,
  • Emmanuel Gosselin,
  • Peter Ladurner and
  • Patrick Flammang

Beilstein J. Nanotechnol. 2018, 9, 2071–2086, doi:10.3762/bjnano.9.196

Graphical Abstract
  • dried by the critical-point method. They were mounted on aluminium stubs, coated with gold in a sputter-coater and observed with a JEOL JSM-7200F field emission scanning electron microscope. 3D confocal interference microscopy Footprints were collected on clean microscope glass slides, rinsed with
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Published 30 Jul 2018

Electromigrated electrical optical antennas for transducing electrons and photons at the nanoscale

  • Arindam Dasgupta,
  • Mickaël Buret,
  • Nicolas Cazier,
  • Marie-Maxime Mennemanteuil,
  • Reinaldo Chacon,
  • Kamal Hammani,
  • Jean-Claude Weeber,
  • Juan Arocas,
  • Laurent Markey,
  • Gérard Colas des Francs,
  • Alexander Uskov,
  • Igor Smetanin and
  • Alexandre Bouhelier

Beilstein J. Nanotechnol. 2018, 9, 1964–1976, doi:10.3762/bjnano.9.187

Graphical Abstract
  • work function of gold. The Fowler–Nordheim plot, as a function of 1/Vdc, is commonly used to distinguish the transition between direct tunneling at low Vdc and a high-bias regime where the energy barrier is drastically reduced and electrons are tunneling by field emission [44]. Thus, the
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Published 11 Jul 2018

Synthesis of carbon nanowalls from a single-source metal-organic precursor

  • André Giese,
  • Sebastian Schipporeit,
  • Volker Buck and
  • Nicolas Wöhrl

Beilstein J. Nanotechnol. 2018, 9, 1895–1905, doi:10.3762/bjnano.9.181

Graphical Abstract
  • catalytically active and characterize their properties for this application. Although the nanorods have the smallest surface area of the synthesized morphologies in this work, they might be promising for electron field-emitter applications since they feature nanosized tips. The field-emission properties of
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Published 29 Jun 2018

Synthesis of hafnium nanoparticles and hafnium nanoparticle films by gas condensation and energetic deposition

  • Irini Michelakaki,
  • Nikos Boukos,
  • Dimitrios A. Dragatogiannis,
  • Spyros Stathopoulos,
  • Costas A. Charitidis and
  • Dimitris Tsoukalas

Beilstein J. Nanotechnol. 2018, 9, 1868–1880, doi:10.3762/bjnano.9.179

Graphical Abstract
  • of the NPs and NTFs were performed by field-emission scanning electron microscopy (FESEM FEI Nova Nano SEM 230) and atomic force microscopy (Veeco diInnova) in tapping mode. The nanomechanical properties of the NTFs were determined by nanoindentation. Nanoidentation testing was performed with a
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Published 27 Jun 2018

Toward the use of CVD-grown MoS2 nanosheets as field-emission source

  • Geetanjali Deokar,
  • Nitul S. Rajput,
  • Junjie Li,
  • Francis Leonard Deepak,
  • Wei Ou-Yang,
  • Nicolas Reckinger,
  • Carla Bittencourt,
  • Jean-Francois Colomer and
  • Mustapha Jouiad

Beilstein J. Nanotechnol. 2018, 9, 1686–1694, doi:10.3762/bjnano.9.160

Graphical Abstract
  • transferred NSs sample showed excellent field-emission properties. A low turn-on field of 3.1 V/μm at a current density of 10 µA/cm2 was measured. The low turn-on field is attributed to the morphology of the NSs exhibiting vertically aligned sheets of MoS2 with sharp and exposed edges. Our findings show that
  • the fabricated MoS2 NSs could have a great potential as robust high-performance electron-emitter material for various applications such as microelectronics and nanoelectronics, flat-panel displays and electron-microscopy emitter tips. Keywords: chemical vapor deposition (CVD); field emission
  • ; molybdenum disulfide (MoS2); nanosheets; sulfurization; transmission electron microscopy (TEM); Introduction There is a great interest in the development of one- and two-dimensional (1D and 2D) materials for field-emission (FE) based cathodes using various nanostructured materials [1] for applications in
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Published 07 Jun 2018

Sulfur-, nitrogen- and platinum-doped titania thin films with high catalytic efficiency under visible-light illumination

  • Boštjan Žener,
  • Lev Matoh,
  • Giorgio Carraro,
  • Bojan Miljević and
  • Romana Cerc Korošec

Beilstein J. Nanotechnol. 2018, 9, 1629–1640, doi:10.3762/bjnano.9.155

Graphical Abstract
  • ). The BE shifts were corrected by assigning a value of 284.8 eV to the C 1s line of adventitious carbon [51]. UV–vis absorption spectra were collected using an Agilent Cary 60 UV–vis spectrophotometer in the wavelength range λ = 400–800 nm. The morphology of thin films was examined using a field
  • emission scanning electron microscope (FEI Inspect™ F50 and Ultra Plus Zeiss). The band gap measurements were performed by measuring the reflectance of the samples using a UV–vis spectrophotometer (Evolution 600, Thermo Scientific), using the diffuse reflectance accessory (DRA-EV-600) integrating sphere
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Published 04 Jun 2018

Correlative electrochemical strain and scanning electron microscopy for local characterization of the solid state electrolyte Li1.3Al0.3Ti1.7(PO4)3

  • Nino Schön,
  • Deniz Cihan Gunduz,
  • Shicheng Yu,
  • Hermann Tempel,
  • Roland Schierholz and
  • Florian Hausen

Beilstein J. Nanotechnol. 2018, 9, 1564–1572, doi:10.3762/bjnano.9.148

Graphical Abstract
  • , Hillsboro, Oregon, USA) equipped with a field emission gun (FEG) and EDX (Octane 60 mm2, EDAX Inc., Mahwah, NJ, USA) was employed to visualize the grain structure of LATP samples. Chemical information from the various regions of interest was obtained by means of EDX. Atomic force microscopy and
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Published 28 May 2018

Sheet-on-belt branched TiO2(B)/rGO powders with enhanced photocatalytic activity

  • Huan Xing,
  • Wei Wen and
  • Jin-Ming Wu

Beilstein J. Nanotechnol. 2018, 9, 1550–1557, doi:10.3762/bjnano.9.146

Graphical Abstract
  • corresponding to graphene can be detected, which can be ascribed to its small quantity in the composite powders. Figure 2 shows the field emission scanning electron microscopy (FESEM) images of the pristine TiO2 nanobelt structures, TGN and TGN-branch 4 h. Comparing Figure 2a and Figure 2b, no obvious
  • TGN-branch x h, where x refers to the precipitation time in the precursor solution. Characterization The morphology was examined by field emission scanning electron microscopy (FESEM, Hitachi S-4800) and transmission electron microscopy (TEM, JEM-2100). The X-ray diffraction (XRD) patterns were
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Published 24 May 2018

Ag2WO4 nanorods decorated with AgI nanoparticles: Novel and efficient visible-light-driven photocatalysts for the degradation of water pollutants

  • Shijie Li,
  • Shiwei Hu,
  • Wei Jiang,
  • Yanping Liu,
  • Yu Liu,
  • Yingtang Zhou,
  • Liuye Mo and
  • Jianshe Liu

Beilstein J. Nanotechnol. 2018, 9, 1308–1316, doi:10.3762/bjnano.9.123

Graphical Abstract
  • ) were denoted as 0.1AgI/Ag2WO4, 0.2AgI/Ag2WO4, 0.3AgI/Ag2WO4, and 0.4AgI/Ag2WO4, respectively. Characterization The crystalline structure of the samples was studied by using a Bruker D8 Advance X-ray diffractometer (XRD). The images of the morphological structure were observed by a field emission
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Published 27 Apr 2018

Surface characterization of nanoparticles using near-field light scattering

  • Eunsoo Yoo,
  • Yizhong Liu,
  • Chukwuazam A. Nwasike,
  • Sebastian R. Freeman,
  • Brian C. DiPaolo,
  • Bernardo Cordovez and
  • Amber L. Doiron

Beilstein J. Nanotechnol. 2018, 9, 1228–1238, doi:10.3762/bjnano.9.114

Graphical Abstract
  • analysis of uncoated SPIOs (Fe3O4). ImageJ software (NIH, Bethesda, MD) was used to measure the mean diameter of the particles from TEM images. Scanning electron microscopy Uncoated SPIOs, PEG-SPIOs, and IPC-SPIOs were characterized by field-emission scanning electron microscopy (FE-SEM, Supra 55 VP, Carl
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Published 18 Apr 2018

Electrodeposition of reduced graphene oxide with chitosan based on the coordination deposition method

  • Mingyang Liu,
  • Yanjun Chen,
  • Chaoran Qin,
  • Zheng Zhang,
  • Shuai Ma,
  • Xiuru Cai,
  • Xueqian Li and
  • Yifeng Wang

Beilstein J. Nanotechnol. 2018, 9, 1200–1210, doi:10.3762/bjnano.9.111

Graphical Abstract
  • -GO was reduced by hydrazine hydrate to obtain the HACC-rGO. In our previous work, the structure and morphology of the resulting HACC-rGO have been characterized by infrared spectroscopy, X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) [29]. As shown in Figure 1b, the
  • the HACC-rGO material was observed using a field emission scanning electron microscope (JSM-5610LV, JEOL Ltd., Japan). The Raman spectrum of the HACC-rGO sample was measured using a Raman spectrometer (INVIA, Renishaw, UK) with an excitation wavelength of 633 nm. The surface and the cross-section
  • morphology of the deposited HACC-rGO/CS film were observed by a field emission scanning electron microscope (JSM-5610LV, JEOL Ltd., JP). The tensile strength and elongation at break of the deposited HACC-rGO/CS film were tested by a universal testing machine (CMT6503, Shenzhen SANS Test Machine Co., China
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Published 17 Apr 2018

Enzymatically promoted release of organic molecules linked to magnetic nanoparticles

  • Chiara Lambruschini,
  • Silvia Villa,
  • Luca Banfi,
  • Fabio Canepa,
  • Fabio Morana,
  • Annalisa Relini,
  • Paola Riani,
  • Renata Riva and
  • Fulvio Silvetti

Beilstein J. Nanotechnol. 2018, 9, 986–999, doi:10.3762/bjnano.9.92

Graphical Abstract
  • . They are here identified as NP@silica@APTES. The morphology and chemical composition of these nanoparticles was studied using field emission scanning electron microscopy (FE-SEM) in combination with energy dispersive X-ray spectroscopy (EDXS) in addition to dynamic light scattering (DLS). In Figure 1A
  • reflectance (ATR) sampling accessory. The morphology of the particles was analysed using a field emission scanning electron microscope (FE-SEM, ZEISS SUPRA 40VP), collecting the signal (secondary electrons) by means of an in-lens detector; the particle microanalyses were performed with an energy dispersive X
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Published 27 Mar 2018

Valley-selective directional emission from a transition-metal dichalcogenide monolayer mediated by a plasmonic nanoantenna

  • Haitao Chen,
  • Mingkai Liu,
  • Lei Xu and
  • Dragomir N. Neshev

Beilstein J. Nanotechnol. 2018, 9, 780–788, doi:10.3762/bjnano.9.71

Graphical Abstract
  • π/2 phase difference for the electric quadrupole. Thus, there is naturally a π/2 relative phase difference between the electric dipole and quadrupole contribution to the far-field emission, when their corresponding charges oscillate in phase. In this case, the parallel electric field components of
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Published 02 Mar 2018

Perovskite-structured CaTiO3 coupled with g-C3N4 as a heterojunction photocatalyst for organic pollutant degradation

  • Ashish Kumar,
  • Christian Schuerings,
  • Suneel Kumar,
  • Ajay Kumar and
  • Venkata Krishnan

Beilstein J. Nanotechnol. 2018, 9, 671–685, doi:10.3762/bjnano.9.62

Graphical Abstract
  • ascertain the stability of the as-prepared samples under nitrogen atmosphere by using a Netzsch STA 449 F1 Zupiter instrument. The samples were heated from room temperature to 800 °C at a heating rate of 10 °C min−1 with a flow rate of 40 mL min−1 in all experiments. Field-emission scanning electron
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Published 21 Feb 2018

Optimisation of purification techniques for the preparation of large-volume aqueous solar nanoparticle inks for organic photovoltaics

  • Furqan Almyahi,
  • Thomas R. Andersen,
  • Nathan A. Cooling,
  • Natalie P. Holmes,
  • Matthew J. Griffith,
  • Krishna Feron,
  • Xiaojing Zhou,
  • Warwick J. Belcher and
  • Paul C. Dastoor

Beilstein J. Nanotechnol. 2018, 9, 649–659, doi:10.3762/bjnano.9.60

Graphical Abstract
  • force microscope (AFM) operated in AC mode was used to probe the nanoparticle films. Film samples for AFM were spin-coated on quartz glass substrates at 2000 rpm for 1 min. A Zeiss Sigma ZP field-emission scanning electron microscope (FESEM) was used to image the nanoparticle films (operating at
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Published 20 Feb 2018

Sensing behavior of flower-shaped MoS2 nanoflakes: case study with methanol and xylene

  • Maryam Barzegar,
  • Masoud Berahman and
  • Azam Iraji zad

Beilstein J. Nanotechnol. 2018, 9, 608–615, doi:10.3762/bjnano.9.57

Graphical Abstract
  • using X-ray diffraction, Brunauer–Emmett–Teller surface area measurements, elemental analysis using energy dispersive X-ray spectroscopy, and field-emission scanning electron microscopy. The gas sensing characteristics were evaluated under exposure to various concentrations of xylene and methanol vapors
  • for several times and then dried under vacuum at 45 °C overnight. Characterization X-ray diffraction (XRD) patterns were obtained with an X-ray diffractometer (Shimadzu XRD-6000, Cu Kα radiation) and energy dispersive X-ray (EDX) spectra and sample morphology were characterized by field-emission
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Published 16 Feb 2018
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