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Search for "field emission" in Full Text gives 288 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Fluorination of vertically aligned carbon nanotubes: from CF4 plasma chemistry to surface functionalization

  • Claudia Struzzi,
  • Mattia Scardamaglia,
  • Jean-François Colomer,
  • Alberto Verdini,
  • Luca Floreano,
  • Rony Snyders and
  • Carla Bittencourt

Beilstein J. Nanotechnol. 2017, 8, 1723–1733, doi:10.3762/bjnano.8.173

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  • ][24]. In single- and multiwalled nanotubes the tuning of surface properties via fluorine-based plasma has been investigated highlighting the modification of morphology, chemical composition and electronic properties, as well as focusing on the field emission performances and the thermal stability [25
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Published 21 Aug 2017

Near-infrared-responsive, superparamagnetic Au@Co nanochains

  • Varadee Vittur,
  • Arati G. Kolhatkar,
  • Shreya Shah,
  • Irene Rusakova,
  • Dmitri Litvinov and
  • T. Randall Lee

Beilstein J. Nanotechnol. 2017, 8, 1680–1687, doi:10.3762/bjnano.8.168

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  • collected by centrifugation at 3000 rpm for 30 min using an RC-3B refrigerated centrifuge (Sorvall Instruments) and redispersed in Milli-Q water prior to analysis. Characterization methods The size and morphology of the composite nanochains were characterized by field-emission scanning electron microscopy
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Published 14 Aug 2017

Process-specific mechanisms of vertically oriented graphene growth in plasmas

  • Subrata Ghosh,
  • Shyamal R. Polaki,
  • Niranjan Kumar,
  • Sankarakumar Amirthapandian,
  • Mohamed Kamruddin and
  • Kostya (Ken) Ostrikov

Beilstein J. Nanotechnol. 2017, 8, 1658–1670, doi:10.3762/bjnano.8.166

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  • same sp3 content in the film. The effects of the substrate temperature and the electric field in vertical alignment of the graphene sheets are reported. These findings help to develop and optimize the process conditions to produce VGNs tailored for applications including sensing, field emission
  • , non-agglomerated structure, sharp edges, excellent thermal and electrical properties, thermal and electrochemical stability and ease in functionalization make VGNs promising candidates for a wide range of applications that include field emission, sensing, energy storage, metamaterials, biomedical and
  • properties [2][8]. Moreover, electrical, structural and optical properties of VGNs can be tuned by controlling the vertical sheet density, structural imperfections and the chemical nature of edge states [9][10][11]. Shih et al. [12] have reported the importance of optimized growth for better field-emission
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Published 10 Aug 2017

Fixation mechanisms of nanoparticles on substrates by electron beam irradiation

  • Daichi Morioka,
  • Tomohiro Nose,
  • Taiki Chikuta,
  • Kazutaka Mitsuishi and
  • Masayuki Shimojo

Beilstein J. Nanotechnol. 2017, 8, 1523–1529, doi:10.3762/bjnano.8.153

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  • nanoparticles using a field-emission scanning electron microscope (SEM, JEOL JSM7800-UHV), to immobilize particles on the substrate. The fixing mechanisms are described elsewhere [8]. The substrate was rinsed using ultra-sonication in an ethanol solution of dodecanethiol for 10 min to remove unfixed particles
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Published 26 Jul 2017

Development of a nitrogen-doped 2D material for tribological applications in the boundary-lubrication regime

  • Shende Rashmi Chandrabhan,
  • Velayudhanpillai Jayan,
  • Somendra Singh Parihar and
  • Sundara Ramaprabhu

Beilstein J. Nanotechnol. 2017, 8, 1476–1483, doi:10.3762/bjnano.8.147

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  • the range of 2θ = 5° to 2θ = 90° using a Rigaku X-ray diffractometer. Raman scattering spectra of graphite, GO and N-rGO were collected by using a WITec Raman spectrometer equipped with Nd:YAG laser (λ = 532 nm). The surface morphology of the sample was analyzed by using field-emission scanning
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Published 17 Jul 2017

Fabrication of hierarchically porous TiO2 nanofibers by microemulsion electrospinning and their application as anode material for lithium-ion batteries

  • Jin Zhang,
  • Yibing Cai,
  • Xuebin Hou,
  • Xiaofei Song,
  • Pengfei Lv,
  • Huimin Zhou and
  • Qufu Wei

Beilstein J. Nanotechnol. 2017, 8, 1297–1306, doi:10.3762/bjnano.8.131

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  • porous TiO2 nanofibers were recorded on a Bruker D8 Advance X-ray diffractometer with Cu Kα radiation (wavelength λ = 1.54 Å) at a scanning speed of 4 °C/min. A Hitachi field emission scanning electron microscope (FE-SEM, SU4800) was employed to observe the surface morphology of porous TiO2 nanofibers
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Published 22 Jun 2017

Charge transport in organic nanocrystal diodes based on rolled-up robust nanomembrane contacts

  • Vineeth Kumar Bandari,
  • Lakshmi Varadharajan,
  • Longqian Xu,
  • Abdur Rehman Jalil,
  • Mirunalini Devarajulu,
  • Pablo F. Siles,
  • Feng Zhu and
  • Oliver G. Schmidt

Beilstein J. Nanotechnol. 2017, 8, 1277–1282, doi:10.3762/bjnano.8.129

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  • [17]. The transport in such diode is subject to tunneling and field emission mechanisms due to the ultra-thin smooth film, while in the present report the thermal activated transport via bulk nanostructures dominates the transport progress. Conclusion In summary, in this work we investigated the
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Published 19 Jun 2017

Metal oxide nanostructures: preparation, characterization and functional applications as chemical sensors

  • Dario Zappa,
  • Angela Bertuna,
  • Elisabetta Comini,
  • Navpreet Kaur,
  • Nicola Poli,
  • Veronica Sberveglieri and
  • Giorgio Sberveglieri

Beilstein J. Nanotechnol. 2017, 8, 1205–1217, doi:10.3762/bjnano.8.122

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  • ). Characterization techniques A field-emission scanning electron microscope (FE-SEM) LEO 1525 was used to investigate the morphology of samples. The electron beam was set at 3–5 keV energy and the samples were attached to metallic stub via carbon glue, to reduce charging effect due to the interaction of electron
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Published 06 Jun 2017

Surface-enhanced Raman spectroscopy of cell lysates mixed with silver nanoparticles for tumor classification

  • Mohamed Hassoun,
  • Iwan W.Schie,
  • Tatiana Tolstik,
  • Sarmiza E. Stanca,
  • Christoph Krafft and
  • Juergen Popp

Beilstein J. Nanotechnol. 2017, 8, 1183–1190, doi:10.3762/bjnano.8.120

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  • mesh copper grid. After 1 min of adsorption the excess liquid was blotted off with filter paper. Dried samples were then examined by a JEM 1400 (JEOL, Tokyo, Japan) transmission electron microscope. Scanning electron microscopy (SEM): Measurements were performed by a field emission microscope JSM-6300F
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Published 01 Jun 2017

Enhanced catalytic activity without the use of an external light source using microwave-synthesized CuO nanopetals

  • Govinda Lakhotiya,
  • Sonal Bajaj,
  • Arpan Kumar Nayak,
  • Debabrata Pradhan,
  • Pradip Tekade and
  • Abhimanyu Rana

Beilstein J. Nanotechnol. 2017, 8, 1167–1173, doi:10.3762/bjnano.8.118

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  • Scherrer equation and is estimated to be ≈11 nm. As the sample obtained after 5 min exhibits phase impurity, only samples obtained with the reaction duration of 10 and 15 min were considered for further characterization. Figure 1b,c shows field-emission scanning electron microscope (FESEM) images of CuO
  • Oxford detectors, field-emission scanning electron microscopy using a Carl Zeiss SUPRA 40 instrument, and the surface area was characterized using a Quantachrome ChemBET TPR/TPD analyzer. The optical properties were analyzed using a UV–vis absorption spectrophotometer by Schimadzu 1800. Material
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Published 30 May 2017

Structural properties and thermal stability of cobalt- and chromium-doped α-MnO2 nanorods

  • Romana Cerc Korošec,
  • Polona Umek,
  • Alexandre Gloter,
  • Jana Padežnik Gomilšek and
  • Peter Bukovec

Beilstein J. Nanotechnol. 2017, 8, 1032–1042, doi:10.3762/bjnano.8.104

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  • lattice parameter a. Next, morphological studies of the samples were conducted by field emission scanning microscopy (FE-SEM) and transmission electron microcopy (TEM). As revealed in the SEM images, Co-90 and Co-130 possess two degrees of hierarchy: (i) nanorods as a primary structure that (ii) form
  • was used. The morphology and dimensions of the isolated products were investigated with field emission scanning (FE-SEM, Carl Zeiss, Supra 35LV) and transmission electron (TEM, Jeol 2100, 200 keV) microscopes. The specimens for SEM characterization were prepared by placing a small amount of a sample
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Published 10 May 2017

Synthesis of coaxial nanotubes of polyaniline and poly(hydroxyethyl methacrylate) by oxidative/initiated chemical vapor deposition

  • Alper Balkan,
  • Efe Armagan and
  • Gozde Ozaydin Ince

Beilstein J. Nanotechnol. 2017, 8, 872–882, doi:10.3762/bjnano.8.89

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  • on Si wafers for imaging and sensor studies. Figure 12 shows the fabrication steps of nanostructures used in this study. The synthesized coaxial nanotubes had PANI on the outer side and pHEMA inside. Images of the nanotubes were taken with a field-emission scanning electron microscope (FESEM, Zeiss
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Published 18 Apr 2017

3D Nanoprinting via laser-assisted electron beam induced deposition: growth kinetics, enhanced purity, and electrical resistivity

  • Brett B. Lewis,
  • Robert Winkler,
  • Xiahan Sang,
  • Pushpa R. Pudasaini,
  • Michael G. Stanford,
  • Harald Plank,
  • Raymond R. Unocic,
  • Jason D. Fowlkes and
  • Philip D. Rack

Beilstein J. Nanotechnol. 2017, 8, 801–812, doi:10.3762/bjnano.8.83

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  • including: sensors [13][14][15], field emission cathodes [16][17], plasmonic elements [3][18], lithographic mask repair [19][20][21], scanning probe tips [22][23][24][25], photonic materials [26], magnetic materials [27][28], nanoparticle separations [29], and lithographic techniques [30][31] to name a few
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Published 07 Apr 2017

Recombinant DNA technology and click chemistry: a powerful combination for generating a hybrid elastin-like-statherin hydrogel to control calcium phosphate mineralization

  • Mohamed Hamed Misbah,
  • Mercedes Santos,
  • Luis Quintanilla,
  • Christina Günter,
  • Matilde Alonso,
  • Andreas Taubert and
  • José Carlos Rodríguez-Cabello

Beilstein J. Nanotechnol. 2017, 8, 772–783, doi:10.3762/bjnano.8.80

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  • aluminum oxide crucible and heated at 20 °C/min under N2 purge (40 mL/min) from 50 to 1000 °C followed by an isothermal step at 1000 °C for 10 min. 6.6 Scanning electron microscopy (SEM) SEM images of the dry ELR/calcium phosphate composites were obtained using an FEI Quanta Field Emission SEM. Samples
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Published 04 Apr 2017

Synthesis of graphene–transition metal oxide hybrid nanoparticles and their application in various fields

  • Arpita Jana,
  • Elke Scheer and
  • Sebastian Polarz

Beilstein J. Nanotechnol. 2017, 8, 688–714, doi:10.3762/bjnano.8.74

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Review
Published 24 Mar 2017

Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles

  • Elena Dilonardo,
  • Michele Penza,
  • Marco Alvisi,
  • Riccardo Rossi,
  • Gennaro Cassano,
  • Cinzia Di Franco,
  • Francesco Palmisano,
  • Luisa Torsi and
  • Nicola Cioffi

Beilstein J. Nanotechnol. 2017, 8, 592–603, doi:10.3762/bjnano.8.64

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  • energy of 150 eV was used to acquire XPS survey spectra; a pass energy of 100 eV was used for the acquisition of XPS high-resolution spectra. The morphological analysis was performed by TEM (FEI, TECNAI T12, operated at 120 kV) and SEM (Field Emission, Zeiss ΣIGMA, operated at 5–10 kV, 10 μm aperture
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Published 10 Mar 2017

Formation and shape-control of hierarchical cobalt nanostructures using quaternary ammonium salts in aqueous media

  • Ruchi Deshmukh,
  • Anurag Mehra and
  • Rochish Thaokar

Beilstein J. Nanotechnol. 2017, 8, 494–505, doi:10.3762/bjnano.8.53

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  • typical sample of cobalt seed particles is shown in Figure S3 (Supporting Information File 1). Characterization The intermediate stages of the growth and aspects such as shape, size and growth direction were investigated by using field emission gun transmission electron microscopy (FEGTEM), high
  • -resolution transmission electron microscopy (HRTEM), and field emission gun scanning electron microscopy (FEGSEM). FEGTEM investigations were carried out by using a JEOL, JEM2100F operated at 200 kV, and the HRTEM was carried out using a JEM 2100 with a LaB6 filament operated at 200 kV. A JEOL JSM-7600F
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Published 23 Feb 2017

Self-assembly of silicon nanowires studied by advanced transmission electron microscopy

  • Marta Agati,
  • Guillaume Amiard,
  • Vincent Le Borgne,
  • Paola Castrucci,
  • Richard Dolbec,
  • Maurizio De Crescenzi,
  • My Alì El Khakani and
  • Simona Boninelli

Beilstein J. Nanotechnol. 2017, 8, 440–445, doi:10.3762/bjnano.8.47

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  • electron microscope (SEM) imaging and TEM-based analyses were performed, respectively. The SEM characterizations were carried out using a field emission gun (FEG) Zeiss Supra25. TEM analyses were performed with a JEOL JEM 2010F operating at 200 kV and with a spherical aberration probe corrected cold FEG
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Published 15 Feb 2017

Fabrication of black-gold coatings by glancing angle deposition with sputtering

  • Alan Vitrey,
  • Rafael Alvarez,
  • Alberto Palmero,
  • María Ujué González and
  • José Miguel García-Martín

Beilstein J. Nanotechnol. 2017, 8, 434–439, doi:10.3762/bjnano.8.46

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  • with the substrate being parallel to the target, i.e., σ = 0°, the same power (100 W) and the equivalent deposition time to get the same amount of material per area as in the GLAD configuration. The morphological characterization has been obtained by field emission scanning electron microscopy (FESEM
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Published 14 Feb 2017

Functionalized TiO2 nanoparticles by single-step hydrothermal synthesis: the role of the silane coupling agents

  • Antoine R. M. Dalod,
  • Lars Henriksen,
  • Tor Grande and
  • Mari-Ann Einarsrud

Beilstein J. Nanotechnol. 2017, 8, 304–312, doi:10.3762/bjnano.8.33

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  • were obtained using TOPAS (Bruker AXS version 4.2). Scanning electron microscopy (SEM) images were recorded on an in-lens cold-field-emission S(T)EM Hitachi S-5500. The acceleration voltage was set at 7 kV and secondary electrons were detected. For the preparation of the samples, a drop of particles in
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Published 31 Jan 2017

Template-controlled piezoactivity of ZnO thin films grown via a bioinspired approach

  • Nina J. Blumenstein,
  • Fabian Streb,
  • Stefan Walheim,
  • Thomas Schimmel,
  • Zaklina Burghard and
  • Joachim Bill

Beilstein J. Nanotechnol. 2017, 8, 296–303, doi:10.3762/bjnano.8.32

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  • (SEM) measurements a DSM 982 GEMINI field-emission SEM with a thermal Schottky-field emitter at a working distance of 2 mm and an acceleration voltage of 3 kV was used. Cross-sections were prepared by sputtering with 80:20 Pt/Pd. X-ray diffractometry (XRD) measurements were performed on a PANalytical
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Published 30 Jan 2017

Performance of natural-dye-sensitized solar cells by ZnO nanorod and nanowall enhanced photoelectrodes

  • Saif Saadaoui,
  • Mohamed Aziz Ben Youssef,
  • Moufida Ben Karoui,
  • Rached Gharbi,
  • Emanuele Smecca,
  • Vincenzina Strano,
  • Salvo Mirabella,
  • Alessandra Alberti and
  • Rosaria A. Puglisi

Beilstein J. Nanotechnol. 2017, 8, 287–295, doi:10.3762/bjnano.8.31

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  • and 4000 cm−1 with suitable scan resolution of 2 cm−1. The UV–vis measurements were studied by means of a UV–vis Lambda 40 spectrophotometer with an integrating sphere. The study of the structural properties of ZnO NWs and NRs was performed using scanning electron microscopy (Gemini field emission SEM
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Published 30 Jan 2017

Impact of contact resistance on the electrical properties of MoS2 transistors at practical operating temperatures

  • Filippo Giannazzo,
  • Gabriele Fisichella,
  • Aurora Piazza,
  • Salvatore Di Franco,
  • Giuseppe Greco,
  • Simonpietro Agnello and
  • Fabrizio Roccaforte

Beilstein J. Nanotechnol. 2017, 8, 254–263, doi:10.3762/bjnano.8.28

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  • corresponds to the gate bias for which ψ = 0 (see (ii) in Figure 3b), whereas for VG > VFB the band bending ψ < 0 (see (iii) in Figure 3b), i.e., the channel starts to accumulate electrons. In the accumulation regime, current injection in the channel is ruled by thermionic field emission (TFE) through the
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Published 25 Jan 2017

Comparison of four functionalization methods of gold nanoparticles for enhancing the enzyme-linked immunosorbent assay (ELISA)

  • Paula Ciaurriz,
  • Fátima Fernández,
  • Edurne Tellechea,
  • Jose F. Moran and
  • Aaron C. Asensio

Beilstein J. Nanotechnol. 2017, 8, 244–253, doi:10.3762/bjnano.8.27

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  • maintained until the flask reached room temperature. AuNPs and conjugates were characterized by dynamic light scattering (DLS) using a zeta potential analysis system (Zetasizer Nano Z, Malvern Instrumentd, Worcestershire, UK), field emission scanning electron microscope (Carl Zeiss) and UV–vis
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Published 25 Jan 2017

Phosphorus-doped silicon nanorod anodes for high power lithium-ion batteries

  • Chao Yan,
  • Qianru Liu,
  • Jianzhi Gao,
  • Zhibo Yang and
  • Deyan He

Beilstein J. Nanotechnol. 2017, 8, 222–228, doi:10.3762/bjnano.8.24

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  • and morphological information of the resultant materials were characterized by X-ray diffraction (Rigaku D/Max-2400, Cu Ka radiation), micro-Raman spectrometry (Jobin-Yvon, LabRAM HR800, 532 nm radiation), field emission scanning electron microscopy (FEI, Nova Nano SEM 450), transmission electron
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Published 23 Jan 2017
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