Search results

Search for "monolayers" in Full Text gives 327 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Pull-off and friction forces of micropatterned elastomers on soft substrates: the effects of pattern length scale and stiffness

  • Peter van Assenbergh,
  • Marike Fokker,
  • Julian Langowski,
  • Jan van Esch,
  • Marleen Kamperman and
  • Dimitra Dodou

Beilstein J. Nanotechnol. 2019, 10, 79–94, doi:10.3762/bjnano.10.8

Graphical Abstract
  • fully penetrate the monolayer. The latter problem could be solved by creating colloidal monolayers with a larger spacing, for example by optimizing the surface chemistry of particles. The mechanism of generating grip on the tested substrates is likely indentation-based, creating mechanical interlocking
  • monolayers on glass using dip coating: Colloidal monolayers from sub-microscale and microscale particles were obtained by deposition of particles on an untreated microscopic slide of glass (75 × 26 mm2) (Corning®) using a dip coating process [45]. Specifically, a Langmuir–Blodgett trough (KSV Nima KN2002
  • uncured PDMS of 1:10 and 1:20 crosslinker/pre-polymer weight ratios in a desiccator. Uncured PDMS was cast on a 14 × 14 mm2 area of an untreated microscopic glass to obtain a layer of 4 mm thickness, and subsequently cured in an oven for 2 h at 68 °C. Characterization of micropatterns Monolayers and
PDF
Album
Supp Info
Full Research Paper
Published 08 Jan 2019

Investigation of CVD graphene as-grown on Cu foil using simultaneous scanning tunneling/atomic force microscopy

  • Majid Fazeli Jadidi,
  • Umut Kamber,
  • Oğuzhan Gürlü and
  • H. Özgür Özer

Beilstein J. Nanotechnol. 2018, 9, 2953–2959, doi:10.3762/bjnano.9.274

Graphical Abstract
  • would be useful in understanding the mechanisms of such interactions. Nowadays, a variety of methods are used to prepare graphene. Mechanical exfoliation of graphite facilitates obtaining micrometer-scale graphene layers on amorphous substrates such as silicon oxide [1]. Graphene monolayers have been
PDF
Album
Full Research Paper
Published 28 Nov 2018

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
  • . Finally, a spatial resolution of ≈5 nm is shown on TERS maps of rhodamine 6G (R6G) sub-monolayers absorbed onto gold monocrystals. Experimental Gold wires (125 μm diameter, Advent AU517311, high purity 99.99%, temper hard) are etched in a 10 mL solution 1:1 v/v of fuming hydrochloric acid (>37 wt %) and
PDF
Album
Supp Info
Full Research Paper
Published 22 Oct 2018

Two-dimensional semiconductors pave the way towards dopant-based quantum computing

  • José Carlos Abadillo-Uriel,
  • Belita Koiller and
  • María José Calderón

Beilstein J. Nanotechnol. 2018, 9, 2668–2673, doi:10.3762/bjnano.9.249

Graphical Abstract
  • band gaps range from millielectronvolts to a few electronvolts. They can also be stacked in van der Waals heterostructures [22][24][25] favoring miniaturization and device integration. Incorporation of dopants affects the properties of isolated or stacked monolayers [26][27], as they do in bulk systems
PDF
Album
Supp Info
Full Research Paper
Published 12 Oct 2018

Polarization-dependent strong coupling between silver nanorods and photochromic molecules

  • Gwénaëlle Lamri,
  • Alessandro Veltri,
  • Jean Aubard,
  • Pierre-Michel Adam,
  • Nordin Felidj and
  • Anne-Laure Baudrion

Beilstein J. Nanotechnol. 2018, 9, 2657–2664, doi:10.3762/bjnano.9.247

Graphical Abstract
  • approaches have been explored to actively control these plasmonic properties without changing the topographic features of the nanoparticles themselves. Liquid crystals [5], thermosensitive polymers [6], transition metal dichalcogenides [7] and graphene [8] monolayers have been used for this purpose. The
PDF
Album
Full Research Paper
Published 08 Oct 2018

Nanoantenna structures for the detection of phonons in nanocrystals

  • Alexander G. Milekhin,
  • Sergei A. Kuznetsov,
  • Ilya A. Milekhin,
  • Larisa L. Sveshnikova,
  • Tatyana A. Duda,
  • Ekaterina E. Rodyakina,
  • Alexander V. Latyshev,
  • Volodymyr M. Dzhagan and
  • Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2018, 9, 2646–2656, doi:10.3762/bjnano.9.246

Graphical Abstract
  • of organic and inorganic materials deposited onto the arrays to be analyzed. The Langmuir–Blodgett technology was used for homogeneous deposition of CdSe, CdS, and PbS NC monolayers on the antenna arrays. The structural parameters of the arrays were confirmed by scanning electron microscopy. 3D full
  • ], nanorings [28], and nanoslits [29]. A detailed description of various nanoantenna geometries can be found in the comprehensive review [30]. In this paper, we report on a systematic study of the effect of SEIRA by the phonon response from monolayers of CdSe, CdS, and PbS NCs deposited on periodic arrays of
  • region. The monolayers (MLs) of CdS and PbS NCs fabricated and MLs of commercially available colloidal CdSe NCs were homogeneously deposited on the prepared plasmonic substrates using the Langmuir–Blodgett (LB) technique as described earlier [23][33][34][35]. The size, shape, and areal density of NCs, as
PDF
Album
Full Research Paper
Published 05 Oct 2018

ZnO-nanostructure-based electrochemical sensor: Effect of nanostructure morphology on the sensing of heavy metal ions

  • Marina Krasovska,
  • Vjaceslavs Gerbreders,
  • Irena Mihailova,
  • Andrejs Ogurcovs,
  • Eriks Sledevskis,
  • Andrejs Gerbreders and
  • Pavels Sarajevs

Beilstein J. Nanotechnol. 2018, 9, 2421–2431, doi:10.3762/bjnano.9.227

Graphical Abstract
  • valid [6][7][27]. This is evidenced by lower sensor sensitivity to changes in concentrations of Cd(NO3)2: the saturation occurs by filling all possible free bonds at low concentrations (which leads to the formation of monolayers; as a result, subsequent layers are not formed due to weak bonds. Figure 5d
PDF
Album
Full Research Paper
Published 11 Sep 2018

Intrinsic ultrasmall nanoscale silicon turns n-/p-type with SiO2/Si3N4-coating

  • Dirk König,
  • Daniel Hiller,
  • Noël Wilck,
  • Birger Berghoff,
  • Merlin Müller,
  • Sangeeta Thakur,
  • Giovanni Di Santo,
  • Luca Petaccia,
  • Joachim Mayer,
  • Sean Smith and
  • Joachim Knoch

Beilstein J. Nanotechnol. 2018, 9, 2255–2264, doi:10.3762/bjnano.9.210

Graphical Abstract
  • experiment that usn-Si can experience a considerable energy offset of electronic states by embedding it in silicon dioxide (SiO2) or silicon nitride (Si3N4), whereby a few monolayers (MLs) of SiO2 or Si3N4 are enough to achieve these offsets. Our findings present an alternative to conventional impurity
  • ) approach. Following an explanation of the theoretical and experimental methods used, we turn to results for Si-NCs obtained from h-DFT. Here, we focus on the electronic structure of Si-NCs as a function of the embedding dielectric and its thickness of up to 3 monolayers (MLs). The latter dependence
PDF
Album
Supp Info
Full Research Paper
Published 23 Aug 2018

Fabrication of photothermally active poly(vinyl alcohol) films with gold nanostars for antibacterial applications

  • Mykola Borzenkov,
  • Maria Moros,
  • Claudia Tortiglione,
  • Serena Bertoldi,
  • Nicola Contessi,
  • Silvia Faré,
  • Angelo Taglietti,
  • Agnese D’Agostino,
  • Piersandro Pallavicini,
  • Maddalena Collini and
  • Giuseppe Chirico

Beilstein J. Nanotechnol. 2018, 9, 2040–2048, doi:10.3762/bjnano.9.193

Graphical Abstract
  • decoration) have received particular attention [6][7]. Previously, it was shown that these GNSs are highly photothermally active under NIR irradiation in aqueous solution in the form of monolayers grafted on dry glass surfaces and when inkjet-printed on flexible substrates, demonstrating the ability to reach
  • materials that can coat surfaces and are capable of eradicating biofilms with remote physical activation. Even though gold nanoparticles are not intrinsically antibacterial, the thermal relaxation upon NIR light activation can be a major force of antibacterial action as it was shown for monolayers of GNSs
  • on glass slides [8]. In this case, the efficient photothermal response of the monolayers resulted in a local hyperthermia effect that was capable of killing bacteria in Staphylococcus aureus biofilms [8]. Therefore, the motivation of the present work lies on the assumption that the incorporation of
PDF
Album
Supp Info
Full Research Paper
Published 23 Jul 2018

Improving the catalytic activity for hydrogen evolution of monolayered SnSe2(1−x)S2x by mechanical strain

  • Sha Dong and
  • Zhiguo Wang

Beilstein J. Nanotechnol. 2018, 9, 1820–1827, doi:10.3762/bjnano.9.173

Graphical Abstract
  • direct approach to improve the catalytic activity for the hydrogen evolution reaction (HER) on the basal plane of the SnSe2(1−x)S2x monolayer. SnSeS and SnSe0.5S1.5 monolayers showed the best catalytic activity for HER at a tensile strain of 10%. This work provides a design for improved catalytic
  • knowledge, theoretical studies related to the system of 2D SnSe2(1−x)S2x alloys as catalysts for HER have been reported rarely. Tuning the electronic properties and catalytic behaviour of SnSe2(1−x)S2x monolayers for HER by strain engineering is required for their application in the energy conversion field
  • . In this work, the electronic properties and catalytic behaviour for HER of SnSe2(1−x)S2x (x = 0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.750, 0.875 and 1.0) monolayers were investigated by density functional theory (DFT). It was shown that band gap and catalytic activity of these alloys can be continuously
PDF
Album
Full Research Paper
Published 18 Jun 2018

Increasing the performance of a superconducting spin valve using a Heusler alloy

  • Andrey A. Kamashev,
  • Aidar A. Validov,
  • Joachim Schumann,
  • Vladislav Kataev,
  • Bernd Büchner,
  • Yakov V. Fominov and
  • Ilgiz A. Garifullin

Beilstein J. Nanotechnol. 2018, 9, 1764–1769, doi:10.3762/bjnano.9.167

Graphical Abstract
  • certain thicknesses of the F2 layer an inverse SSV effect ΔTc < 0 [26]. The most remarkable result of the present study is the magnitude of the direct SSV effect, which reaches for dHA = 1 nm (about two monolayers of HA) the maximum value of 80 mK (triangles in Figure 2). This surpasses the result for the
PDF
Album
Supp Info
Letter
Published 12 Jun 2018

Free-radical gases on two-dimensional transition-metal disulfides (XS2, X = Mo/W): robust half-metallicity for efficient nitrogen oxide sensors

  • Chunmei Zhang,
  • Yalong Jiao,
  • Fengxian Ma,
  • Sri Kasi Matta,
  • Steven Bottle and
  • Aijun Du

Beilstein J. Nanotechnol. 2018, 9, 1641–1646, doi:10.3762/bjnano.9.156

Graphical Abstract
  • experimentally obtained, our strategy to detect gas molecules is promising to be applicable. Top and side views of the most favorable NO and NO2 adsorption configurations on monolayers of MoS2 and WS2. The yellow, purple, grey, white and red balls represent S, Mo, W, N, and O atoms, respectively. (a–c) TDOS and
PDF
Album
Supp Info
Full Research Paper
Published 05 Jun 2018

Nanoporous silicon nitride-based membranes of controlled pore size, shape and areal density: Fabrication as well as electrophoretic and molecular filtering characterization

  • Axel Seidenstücker,
  • Stefan Beirle,
  • Fabian Enderle,
  • Paul Ziemann,
  • Othmar Marti and
  • Alfred Plettl

Beilstein J. Nanotechnol. 2018, 9, 1390–1398, doi:10.3762/bjnano.9.131

Graphical Abstract
  • purpose monolayers of non-close-packed colloids, and diblock or triblock copolymers were used [23][24][25][26][27]. For the present work with targeted pore sizes of some nanometers up to 50 nm in about 50 nm thick membranes, the sought control of pore shape with smooth inner pore surfaces, and, most
PDF
Album
Supp Info
Full Research Paper
Published 09 May 2018

New 2D graphene hybrid composites as an effective base element of optical nanodevices

  • Olga E. Glukhova,
  • Igor S. Nefedov,
  • Alexander S. Shalin and
  • Мichael М. Slepchenkov

Beilstein J. Nanotechnol. 2018, 9, 1321–1327, doi:10.3762/bjnano.9.125

Graphical Abstract
  • modelled by two graphene monolayers between which single-walled CNTs with different diameters were regularly arranged at different distances from each other. Spectra of the real and imaginary parts of the diagonal elements of the surface conductivity tensor for four topological models of the hybrid
  • little investigated modifications of graphene is a 2D-hybrid composite composed of graphene monolayers and CNTs covalently bonded to them [5][6][7][8]. The hybrid 2D film exhibits high performance as photosensitive element of photodetectors in the range of 100–700 nm. It was found that a single photon
  • -mechanical SCC DFTB method [12][13] The 2D CNT–graphene hybrid film was modelled by two graphene monolayers between which single-walled CNTs with different diameters were regularly arranged at different distances from each other. As was shown earlier [14], the composites with zigzag tubes (n, 0) (n = 10, 12
PDF
Album
Letter
Published 30 Apr 2018

Computational exploration of two-dimensional silicon diarsenide and germanium arsenide for photovoltaic applications

  • Sri Kasi Matta,
  • Chunmei Zhang,
  • Yalong Jiao,
  • Anthony O'Mullane and
  • Aijun Du

Beilstein J. Nanotechnol. 2018, 9, 1247–1253, doi:10.3762/bjnano.9.116

Graphical Abstract
  • dynamic stability of the compounds, which is inferred by analyzing their vibrational normal mode. SiAs2 and GeAs2 monolayers possess a bandgap of 1.91 and 1.64 eV, respectively, which is excellent for sunlight harvesting, while the exciton binding energy is found to be 0.25 and 0.14 eV, respectively
  • atomic layers interacting with neighboring layers through weak van der Waals forces. Detailed structural parameters for bulk and monolayers of SiAs2 and GeAs2 are listed in Table 1. The calculated lattice constants for the bulk materials are in good agreement with previous experimental values [4]. The
  • calculated lattice constants for single-layered SiAs2 and GeAs2 are slightly smaller than those calculated for the bulk phases. The lattice constant c is kept constant and greater than 15 Å by adding a vacuum layer. The dynamical stability of SiAs2 and GeAs2 monolayers is evaluated by analysing the phonon
PDF
Album
Supp Info
Full Research Paper
Published 19 Apr 2018

Atomistic modeling of tribological properties of Pd and Al nanoparticles on a graphene surface

  • Alexei Khomenko,
  • Miroslav Zakharov,
  • Denis Boyko and
  • Bo N. J. Persson

Beilstein J. Nanotechnol. 2018, 9, 1239–1246, doi:10.3762/bjnano.9.115

Graphical Abstract
  • ][14]. There are many studies concerning the tribological properties of nanoobjects. For example, alumina nanoparticles were studied in [9] and self-organized monolayers in [4]. In [5] the authors studied the interaction in ultrahigh vacuum between a nanoasperity and an alkali-metal halide surface at
  • , even when the contact area with the graphene is the same. This results from the different lattice constant and atomic arrangements in Al and Pd particles. A similar non-monotonous behavior of friction is observed for hexadecanethiol self-assembled monolayers on Au substrates [4] and NaCl(001) crystal
  • , which is similar to that of hexadecanethiol self-assembled monolayers on Au substrates [4] and NaCl crystal surfaces in ultrahigh vacuum [5]. We found that the friction force, i.e., the force acting on the particles from the substrate, depends nearly linearly on the contact area consistent with [13][14
PDF
Album
Full Research Paper
Published 19 Apr 2018
Graphical Abstract
  • interfaces has been studied using layer-by-layer assembly that incorporates organosilane or organothiol monolayers to functionalize a surface to form multilayer films [2][3]. Dip-pen nanolithography was applied to pattern porphyrazines onto a polycrystalline gold surface to align horizontally or vertically
PDF
Album
Supp Info
Full Research Paper
Published 17 Apr 2018

Theoretical study of strain-dependent optical absorption in a doped self-assembled InAs/InGaAs/GaAs/AlGaAs quantum dot

  • Tarek A. Ameen,
  • Hesameddin Ilatikhameneh,
  • Archana Tankasala,
  • Yuling Hsueh,
  • James Charles,
  • Jim Fonseca,
  • Michael Povolotskyi,
  • Jun Oh Kim,
  • Sanjay Krishna,
  • Monica S. Allen,
  • Jeffery W. Allen,
  • Rajib Rahman and
  • Gerhard Klimeck

Beilstein J. Nanotechnol. 2018, 9, 1075–1084, doi:10.3762/bjnano.9.99

Graphical Abstract
  • nm. The wetting layer is two monolayers. The measured system has been doped with sheet doping of two electrons per dot. The strain controlling layer is made of In0.15Ga0.85As and is sandwiched between two layers of GaAs each with a thickness of 1 nm. Next, there are two layers of Al0.22Ga0.78As, each
  • with a base diameter of 20 nm and a height of 5 nm, with a wetting layer of two monolayers. The strain control layer of In0.15Ga0.85As is sandwiched between two 1 nm layers of GaAs, and two 2 nm layers of Al0.22Ga0.78As. The rest of the structure is made of Al0.07Ga0.93As. The atomistic grid of the
PDF
Album
Full Research Paper
Published 04 Apr 2018

An implementation of spin–orbit coupling for band structure calculations with Gaussian basis sets: Two-dimensional topological crystals of Sb and Bi

  • Sahar Pakdel,
  • Mahdi Pourfath and
  • J. J. Palacios

Beilstein J. Nanotechnol. 2018, 9, 1015–1023, doi:10.3762/bjnano.9.94

Graphical Abstract
  • practicality of our proposed single-parameter implementation, when AE basis sets are computationally demanding. Bi(111) monolayers A monolayer of Bi(111) was one of the first 2D crystals predicted to be a 2D TI [27] and with actual chances to be experimentally isolated and characterized. However, only a few
PDF
Album
Full Research Paper
Published 28 Mar 2018

Electro-optical interfacial effects on a graphene/π-conjugated organic semiconductor hybrid system

  • Karolline A. S. Araujo,
  • Luiz A. Cury,
  • Matheus J. S. Matos,
  • Thales F. D. Fernandes,
  • Luiz G. Cançado and
  • Bernardo R. A. Neves

Beilstein J. Nanotechnol. 2018, 9, 963–974, doi:10.3762/bjnano.9.90

Graphical Abstract
  • on optoelectronic devices possible. In another front, self-assembled monolayers (SAMs) on low-dimensional systems, such as a graphene (an archetypical 2D material), have attracted significant attention due to the myriad of applications in nanoelectronic devices [14][15][16]. Aiming at the improvement
  • monolayers across the graphene surface (Figure 1c, Figure 2b,d). Besides molecular structural configuration, the charge transfer within the graphene/RA hybrid has also been estimated via ab initio calculations. The results indicate that electrons are transferred from graphene to RA molecules, resulting in p
  • properties of this novel RA SAM structure. Therefore, photoluminescence (PL) studies of RA monolayers and multilayers atop graphite microplates were performed as a function of temperature (Figure 3). Initially, in order to emulate thick and disordered RA films, a graphite microplate substrate was spread
PDF
Album
Supp Info
Full Research Paper
Published 23 Mar 2018

Towards the third dimension in direct electron beam writing of silver

  • Katja Höflich,
  • Jakub Mateusz Jurczyk,
  • Katarzyna Madajska,
  • Maximilian Götz,
  • Luisa Berger,
  • Carlos Guerra-Nuñez,
  • Caspar Haverkamp,
  • Iwona Szymanska and
  • Ivo Utke

Beilstein J. Nanotechnol. 2018, 9, 842–849, doi:10.3762/bjnano.9.78

Graphical Abstract
  • occurring during deposition can be elucidated by surface-science studies in which low-energy electrons dissociate monolayers of precursors under ultra-high vacuum conditions [4]. Based on these results the design of precursors for new materials and enhanced purity of the deposits is conceivable [15][16
PDF
Album
Letter
Published 08 Mar 2018

Tuning adhesion forces between functionalized gold colloidal nanoparticles and silicon AFM tips: role of ligands and capillary forces

  • Sven Oras,
  • Sergei Vlassov,
  • Marta Berholts,
  • Rünno Lõhmus and
  • Karine Mougin

Beilstein J. Nanotechnol. 2018, 9, 660–670, doi:10.3762/bjnano.9.61

Graphical Abstract
  • the importance of the surface and quantity of grafting sites to form well-packed monolayers of self assembled monolayers (SAMs) on a surface (or NPs), which will ensure a proper mechanical behavior and aging of the system and reduce its destabilization along the time. In addition, long chains of more
  • with self-assembled monolayers ending with a hydrophobic (methyl –CH3), partially hydrophilic (–OCH3) and hydrophilic group (hydroxyl –OH, thiol –SH, carboxylic –COOH, amino –NH2). Dodecanethiol for methyl terminated coating (referred to as –CH3), 3-(triethoxysilyl)propane-1-thiol for methoxy
PDF
Album
Supp Info
Full Research Paper
Published 20 Feb 2018

Electron interactions with the heteronuclear carbonyl precursor H2FeRu3(CO)13 and comparison with HFeCo3(CO)12: from fundamental gas phase and surface science studies to focused electron beam induced deposition

  • Ragesh Kumar T P,
  • Paul Weirich,
  • Lukas Hrachowina,
  • Marc Hanefeld,
  • Ragnar Bjornsson,
  • Helgi Rafn Hrodmarsson,
  • Sven Barth,
  • D. Howard Fairbrother,
  • Michael Huth and
  • Oddur Ingólfsson

Beilstein J. Nanotechnol. 2018, 9, 555–579, doi:10.3762/bjnano.9.53

Graphical Abstract
PDF
Album
Supp Info
Full Research Paper
Published 14 Feb 2018

Wafer-scale bioactive substrate patterning by chemical lift-off lithography

  • Chong-You Chen,
  • Chang-Ming Wang,
  • Hsiang-Hua Li,
  • Hong-Hseng Chan and
  • Wei-Ssu Liao

Beilstein J. Nanotechnol. 2018, 9, 311–320, doi:10.3762/bjnano.9.31

Graphical Abstract
  • . Silicon substrates (Mustec Corp., Hsinchu, Taiwan) with 100 nm thick Au and 5 nm chromium adhesive layers were prepared by thermal evaporation. The Au substrates were immersed in 0.5 mM MCU or TEG ethanolic solution for >6 h to form self-assembled monolayers. After SAM formation, the substrates were
PDF
Album
Supp Info
Full Research Paper
Published 26 Jan 2018

Review: Electrostatically actuated nanobeam-based nanoelectromechanical switches – materials solutions and operational conditions

  • Liga Jasulaneca,
  • Jelena Kosmaca,
  • Raimonds Meija,
  • Jana Andzane and
  • Donats Erts

Beilstein J. Nanotechnol. 2018, 9, 271–300, doi:10.3762/bjnano.9.29

Graphical Abstract
PDF
Album
Review
Published 25 Jan 2018
Other Beilstein-Institut Open Science Activities