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Search for "filter" in Full Text gives 403 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Polydopamine-coated Au nanorods for targeted fluorescent cell imaging and photothermal therapy

  • Boris N. Khlebtsov,
  • Andrey M. Burov,
  • Timofey E. Pylaev and
  • Nikolai G. Khlebtsov

Beilstein J. Nanotechnol. 2019, 10, 794–803, doi:10.3762/bjnano.10.79

Graphical Abstract
  • prevents a direct contact between R123 molecules and AuNR. For fluorescent measurements the initial nanoparticle solution was diluted to 1/64th to prevent nonlinear behavior of the spectra related to the inner filter effect [47]. Figure 1D shows typical fluorescent emission spectra recorded at 480 nm
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Published 01 Apr 2019

An iridescent film of porous anodic aluminum oxide with alternatingly electrodeposited Cu and SiO2 nanoparticles

  • Menglei Chang,
  • Huawen Hu,
  • Haiyan Quan,
  • Hongyang Wei,
  • Zhangyi Xiong,
  • Jiacong Lu,
  • Pin Luo,
  • Yaoheng Liang,
  • Jianzhen Ou and
  • Dongchu Chen

Beilstein J. Nanotechnol. 2019, 10, 735–745, doi:10.3762/bjnano.10.73

Graphical Abstract
  • was deposited via sputtering, yielding a colorful filter material. Different structural colors could be obtained via changing the anodization time [17]. In this context, instead of using high-purity aluminum foils and titanium foils as the substrate for the anodization treatment, which have been
  • above 10 Hz and below 10 Hz were 470 pF and 2.2 nF, respectively. The parameters related to filter and earthing modes were set as 470 nF and field, respectively. The prepared samples were observed using a TM3030 scanning electron microscope (SEM, Hitachi). The absorbance and emissivity properties were
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Published 19 Mar 2019

Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)

  • Miguel A. Andrés,
  • Clemence Sicard,
  • Christian Serre,
  • Olivier Roubeau and
  • Ignacio Gascón

Beilstein J. Nanotechnol. 2019, 10, 654–665, doi:10.3762/bjnano.10.65

Graphical Abstract
  • balances with a filter paper plate. BAM images were obtained using a KSV NIMA Micro BAM, equipped with a red laser light source (50 mW, 659 nm) with a fixed incidence angle of 53.1°. The spatial resolution of this optical system in the water surface plane is 6 µm per pixel. Chloroform (CHCl3, Macron, >99.8
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Published 06 Mar 2019

Enhancement in thermoelectric properties due to Ag nanoparticles incorporated in Bi2Te3 matrix

  • Srashti Gupta,
  • Dinesh Chandra Agarwal,
  • Bathula Sivaiah,
  • Sankarakumar Amrithpandian,
  • Kandasami Asokan,
  • Ajay Dhar,
  • Binaya Kumar Panigrahi,
  • Devesh Kumar Avasthi and
  • Vinay Gupta

Beilstein J. Nanotechnol. 2019, 10, 634–643, doi:10.3762/bjnano.10.63

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  • theoretical calculations for the introduction of metal nano-inclusions in TE materials. This theory predicts the band bending at the metal–semiconductor interface will allow for the transmission of high energy electrons along with a blocking of low energy electrons. This electron energy filter results in
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Published 04 Mar 2019

Review of time-resolved non-contact electrostatic force microscopy techniques with applications to ionic transport measurements

  • Aaron Mascaro,
  • Yoichi Miyahara,
  • Tyler Enright,
  • Omur E. Dagdeviren and
  • Peter Grütter

Beilstein J. Nanotechnol. 2019, 10, 617–633, doi:10.3762/bjnano.10.62

Graphical Abstract
  • to the same postprocessing (windowing, filtering, and analytical signal extraction). It is instructive to note that the extracted instantaneous frequency contains a time delay introduced by the bandpass filter used in the processing to smooth the response, which cannot be completely corrected for
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Published 01 Mar 2019

Ultraviolet patterns of flowers revealed in polymer replica – caused by surface architecture

  • Anna J. Schulte,
  • Matthias Mail,
  • Lisa A. Hahn and
  • Wilhelm Barthlott

Beilstein J. Nanotechnol. 2019, 10, 459–466, doi:10.3762/bjnano.10.45

Graphical Abstract
  • (pigment filled) cells act as a kind of color filter. Consequently, thicker cells create a longer path length for the light within the petal and thereby increase the chance that the light reaches the pigments. This results in a stronger stimulation of the pigments and thus a higher spectral purity. Exner
  • under environmental conditions. Both cameras were equipped with a UV-Nikkor 105 mm quartz objective (Nikon), an IR-neutralization filter (NG 52D, Optik Makario, Mönchengladbach, Germany) and a UV-transmission filter (SP2 400UV 52D, Optik Makario, Mönchengladbach, Deutschland) to eliminate wavelengths in
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Published 13 Feb 2019

Gold nanoparticles embedded in a polymer as a 3D-printable dichroic nanocomposite material

  • Lars Kool,
  • Anton Bunschoten,
  • Aldrik H. Velders and
  • Vittorio Saggiomo

Beilstein J. Nanotechnol. 2019, 10, 442–447, doi:10.3762/bjnano.10.43

Graphical Abstract
  • 4th century puzzled scientists for long time: The Lycurgus cup [7]. This cup has a very peculiar dichroic filter property [8], as its color is dependent on the illumination angle, changing from clear red (transmittance) to opaque green (reflectance). It was later found that this optical property was
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Published 12 Feb 2019

Sub-wavelength waveguide properties of 1D and surface-functionalized SnO2 nanostructures of various morphologies

  • Venkataramana Bonu,
  • Binaya Kumar Sahu,
  • Arindam Das,
  • Sankarakumar Amirthapandian,
  • Sandip Dhara and
  • Harish C. Barshilia

Beilstein J. Nanotechnol. 2019, 10, 379–388, doi:10.3762/bjnano.10.37

Graphical Abstract
  • efficiently guide visible and UV wavelengths in air and also in water. SnO2 NWs were also used as a short pass filter [6]. Apart from the coupled light, these NWs also guide their oxygen vacancy related visible photoluminescence (PL) towards the end of the NWs [6]. Defects in SnO2 play a crucial role in its
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Published 07 Feb 2019

Site-specific growth of oriented ZnO nanocrystal arrays

  • Rekha Bai,
  • Dinesh K. Pandya,
  • Sujeet Chaudhary,
  • Veer Dhaka,
  • Vladislav Khayrudinov,
  • Jori Lemettinen,
  • Christoffer Kauppinen and
  • Harri Lipsanen

Beilstein J. Nanotechnol. 2019, 10, 274–280, doi:10.3762/bjnano.10.26

Graphical Abstract
  • on bare/patterned ITO were structurally characterized using an X-ray diffractometer (PANalytical X’pert Pro model) having Cu Kα radiation (λ = 1.54 Å) in the 2θ range 20° to 80° using grazing incidence X-ray diffraction (GIXRD). The setup consists of an X-ray mirror, a Ni filter, and a PIXcel3D
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Published 24 Jan 2019

New micro/mesoporous nanocomposite material from low-cost sources for the efficient removal of aromatic and pathogenic pollutants from water

  • Emmanuel I. Unuabonah,
  • Robert Nöske,
  • Jens Weber,
  • Christina Günter and
  • Andreas Taubert

Beilstein J. Nanotechnol. 2019, 10, 119–131, doi:10.3762/bjnano.10.11

Graphical Abstract
  • divergence and antiscatter slit and a large Nibeta filter. The detector was set to continuous mode with an active length of 3.0061°. Scanning electron microscopy (SEM) and specific surface area analysis SEM analysis was performed on a Japan Electron Optics Laboratory JSM 6510 with an energy dispersive X-ray
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Published 09 Jan 2019

A comparison of tarsal morphology and traction force in the two burying beetles Nicrophorus nepalensis and Nicrophorus vespilloides (Coleoptera, Silphidae)

  • Liesa Schnee,
  • Benjamin Sampalla,
  • Josef K. Müller and
  • Oliver Betz

Beilstein J. Nanotechnol. 2019, 10, 47–61, doi:10.3762/bjnano.10.5

Graphical Abstract
  • with plasma as for the epoxy casts described above. Traction force experiments A small piece (2 mm × 2 mm) of styrofoam with a human hair of ca. 15 cm in length was glued longitudinally to the surface of the elytron (Figure 5c). For a recovery time of 30 min, the beetles were kept on clean moist filter
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Published 04 Jan 2019

Bidirectional biomimetic flow sensing with antiparallel and curved artificial hair sensors

  • Claudio Abels,
  • Antonio Qualtieri,
  • Toni Lober,
  • Alessandro Mariotti,
  • Lily D. Chambers,
  • Massimo De Vittorio,
  • William M. Megill and
  • Francesco Rizzi

Beilstein J. Nanotechnol. 2019, 10, 32–46, doi:10.3762/bjnano.10.4

Graphical Abstract
  • Civile e Industriale, Pisa, I-56122, Italy 10.3762/bjnano.10.4 Abstract Background: Flow stimuli in the natural world are varied and contain a wide variety of directional information. Nature has developed morphological polarity and bidirectional arrangements for flow sensing to filter the incoming
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Published 03 Jan 2019

Zn/F-doped tin oxide nanoparticles synthesized by laser pyrolysis: structural and optical properties

  • Florian Dumitrache,
  • Iuliana P. Morjan,
  • Elena Dutu,
  • Ion Morjan,
  • Claudiu Teodor Fleaca,
  • Monica Scarisoreanu,
  • Alina Ilie,
  • Marius Dumitru,
  • Cristian Mihailescu,
  • Adriana Smarandache and
  • Gabriel Prodan

Beilstein J. Nanotechnol. 2019, 10, 9–21, doi:10.3762/bjnano.10.2

Graphical Abstract
  • particles were then entrained by the gas flow. The powder is trapped in the filter-containing collector and the gases, passing through the filter, leave the system with the aid of a vacuum pump. The experiments take place at a constant laser power at 110 W and pressure of 450 mbar. Table 4 lists the main
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Published 02 Jan 2019

Contact splitting in dry adhesion and friction: reducing the influence of roughness

  • Jae-Kang Kim and
  • Michael Varenberg

Beilstein J. Nanotechnol. 2019, 10, 1–8, doi:10.3762/bjnano.10.1

Graphical Abstract
  • the power of three in determination of the area moment of inertia for the flap cross-section). Assuming that flaps of 5 µm in thickness are not able to adapt to surface irregularities having a wavelength of less than 10 µm, we used this latter value as a cut-off length to filter out the waviness
  • information from the primary profiles with the Gaussian high-pass filter [41]. The pull-off force, represented as a function of the parameters calculated based on the filtered roughness profiles, is shown in Figure 2c,d (root-mean-square deviation (Rq) and new integrative characteristic (Ri = σs/βη
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Published 02 Jan 2019

Characterization and influence of hydroxyapatite nanopowders on living cells

  • Przemyslaw Oberbek,
  • Tomasz Bolek,
  • Adrian Chlanda,
  • Seishiro Hirano,
  • Sylwia Kusnieruk,
  • Julia Rogowska-Tylman,
  • Ganna Nechyporenko,
  • Viktor Zinchenko,
  • Wojciech Swieszkowski and
  • Tomasz Puzyn

Beilstein J. Nanotechnol. 2018, 9, 3079–3094, doi:10.3762/bjnano.9.286

Graphical Abstract
  • ], with and without the admixture of fluorine (CaHAP300 and CaHFAP300, respectively) and with subsequent filter drying. Hydroxyapatites from the Laboratory of Nanostructures and from the Bogatsky Institute were synthesized with a calcium deficiency. The Ca/P atomic ratio of the obtained HAp samples is
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Published 27 Dec 2018

The nanoscaled metal-organic framework ICR-2 as a carrier of porphyrins for photodynamic therapy

  • Jan Hynek,
  • Sebastian Jurík,
  • Martina Koncošová,
  • Jaroslav Zelenka,
  • Ivana Křížová,
  • Tomáš Ruml,
  • Kaplan Kirakci,
  • Ivo Jakubec,
  • František Kovanda,
  • Kamil Lang and
  • Jan Demel

Beilstein J. Nanotechnol. 2018, 9, 2960–2967, doi:10.3762/bjnano.9.275

Graphical Abstract
  • medium was less than 4 % v/v. After incubation, the medium was changed for full culture medium without phenol red and the cells were immediately irradiated by a 150 W halogen lamp (Thorlabs) with a water filter for 15 min (45 mW·cm−2). After another 24 h, a viability of the cells was assayed by the
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Published 30 Nov 2018

In situ characterization of nanoscale contaminations adsorbed in air using atomic force microscopy

  • Jesús S. Lacasa,
  • Lisa Almonte and
  • Jaime Colchero

Beilstein J. Nanotechnol. 2018, 9, 2925–2935, doi:10.3762/bjnano.9.271

Graphical Abstract
  • kHz. Further details of how DAFM and Kelvin probe microscopy (KPM) [14] are implemented in our experiments is described elsewhere [42][50][51][52]. WSxM software was used for image processing [56]. Typically, a plane filter was applied to topography images; no filter is applied to the electrostatic
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Published 23 Nov 2018

Variation of the photoluminescence spectrum of InAs/GaAs heterostructures grown by ion-beam deposition

  • Alexander S. Pashchenko,
  • Leonid S. Lunin,
  • Eleonora M. Danilina and
  • Sergei N. Chebotarev

Beilstein J. Nanotechnol. 2018, 9, 2794–2801, doi:10.3762/bjnano.9.261

Graphical Abstract
  • monochromator entrance slit from the reflected harmonics of the exciting laser radiation was carried out by means a Y-1.4 optical filter (light yellow color). A study of the surface morphology of the grown heterostructures was carried out using a Solver HV atomic force microscope. The structural properties of
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Published 02 Nov 2018

Near-infrared light harvesting of upconverting NaYF4:Yb3+/Er3+-based amorphous silicon solar cells investigated by an optical filter

  • Daiming Liu,
  • Qingkang Wang and
  • Qing Wang

Beilstein J. Nanotechnol. 2018, 9, 2788–2793, doi:10.3762/bjnano.9.260

Graphical Abstract
  • rods were incorporated in a polymethylmethacrylate (PMMA) layer on the rear side of a-Si:H solar cell. Under AM1.5 solar irradiation, a facile optical filter was used to scrutinize the effect of upconversion on the cell performance. Compared with a bare cell, the NaYF4:Yb3+/Er3+-based a-Si:H cell
  • harvesting. Keywords: filter; light harvesting; solar cells; upconverting; Introduction One potential way to meet the increasing energy consumption requirements lies in the utilization of solar energy. Solar cells are expected to play an important role in relieving the global energy crisis. Among solar
  • optical filter. Photoelectric performances of a-Si:H solar cells with and without UC were compared under AM1.5 solar irradiation. Results and Discussion Field-emission scanning electron microscopy (FE-SEM) was used to investigate the sample morphologies over the course of the reaction. In Figure 1a, the
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Published 31 Oct 2018

Comparative biological effects of spherical noble metal nanoparticles (Rh, Pd, Ag, Pt, Au) with 4–8 nm diameter

  • Alexander Rostek,
  • Marina Breisch,
  • Kevin Pappert,
  • Kateryna Loza,
  • Marc Heggen,
  • Manfred Köller,
  • Christina Sengstock and
  • Matthias Epple

Beilstein J. Nanotechnol. 2018, 9, 2763–2774, doi:10.3762/bjnano.9.258

Graphical Abstract
  • was boiled under reflux for 60 min (Pd), 120 min (Rh), and 240 min (Pt), respectively. At the end of reaction time, the mixture was rapidly cooled to room temperature in an ice bath. Most of the water and the synthesis by-products were removed by centrifugation (4,000 rpm) in a spin filter tube
  • stirred for at least 12 h. Most of the water and the by-products were removed by centrifugation (4,000 rpm) in a spin filter tube. The nanoparticles were purified by a final centrifugation step at 66,000 g for 30 min and redispersed in ultrapure degassed water. The dispersion was stored under argon at 4
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Published 29 Oct 2018

Accurate control of the covalent functionalization of single-walled carbon nanotubes for the electro-enzymatically controlled oxidation of biomolecules

  • Naoual Allali,
  • Veronika Urbanova,
  • Mathieu Etienne,
  • Xavier Devaux,
  • Martine Mallet,
  • Brigitte Vigolo,
  • Jean-Joseph Adjizian,
  • Chris P. Ewels,
  • Sven Oberg,
  • Alexander V. Soldatov,
  • Edward McRae,
  • Yves Fort,
  • Manuel Dossot and
  • Victor Mamane

Beilstein J. Nanotechnol. 2018, 9, 2750–2762, doi:10.3762/bjnano.9.257

Graphical Abstract
  • microscopy (HRSTEM) were performed using a probe aberration-corrected JEOL ARM200 microscope equipped with a cold field emission gun, a JEOL JED2300T energy dispersive X-ray spectrometer (EDS) and a Gatan GIF Quantum energy filter for electron energy loss spectroscopy (EELS). The microscope was operated at
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Published 26 Oct 2018

Contactless photomagnetoelectric investigations of 2D semiconductors

  • Marian Nowak,
  • Marcin Jesionek,
  • Barbara Solecka,
  • Piotr Szperlich,
  • Piotr Duka and
  • Anna Starczewska

Beilstein J. Nanotechnol. 2018, 9, 2741–2749, doi:10.3762/bjnano.9.256

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  • . The radiation intensity was changed using neutral density filters (UV-NIR-FILTER-250-2000 nm, quartz glass substrate, Oriel). The intensity was monitored using a Hamamatsu S3399 photodiode whose short-circuit current was measured using an EG&G 5110 lock-in amplifier. The time dependence of the
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Published 25 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

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  • , we diluted the sample in a poly(methyl methacrylate) (PMMA) solution in toluene and spin-coated them onto the sample. The phototransition is realized by illuminating the sample with a Xe lamp filtered with a 400 nm low-pass filter. The excitation lasts two minutes and the polymer film becomes violet
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Published 08 Oct 2018

Impact of the anodization time on the photocatalytic activity of TiO2 nanotubes

  • Jesús A. Díaz-Real,
  • Geyla C. Dubed-Bandomo,
  • Juan Galindo-de-la-Rosa,
  • Luis G. Arriaga,
  • Janet Ledesma-García and
  • Nicolas Alonso-Vante

Beilstein J. Nanotechnol. 2018, 9, 2628–2643, doi:10.3762/bjnano.9.244

Graphical Abstract
  • characterizations. A UV hot-mirror filter (Edmund Optics F45-066) was used to prevent the heating of the electrolyte and to allow light with an irradiance power of 20 mW/cm2 to pass. Photocurrent transient curves were obtained by blocking the light for periods of 5 s with an automated shutter (Lambda SC Smart
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Published 04 Oct 2018
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  • using an Agilent 4156C precision semiconductor parameter analyzer. For the photoleakage current test, monochromatic light irradiation was supplied by a Xe lamp with a band pass filter (FWHM of 10 nm) at an intensity of 0.2 mW/cm2. The wavelength of the light was in the range of 400–530 nm and was
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Published 26 Sep 2018
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