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Search for "transmittance" in Full Text gives 118 result(s) in Beilstein Journal of Nanotechnology.

Magnetic-field sensor with self-reference characteristic based on a magnetic fluid and independent plasmonic dual resonances

  • Kun Ren,
  • Xiaobin Ren,
  • Yumeng He and
  • Qun Han

Beilstein J. Nanotechnol. 2019, 10, 247–255, doi:10.3762/bjnano.10.23

Graphical Abstract
  • waveguide structures are plotted in Figure 2. It is seen that for the individual resonator, there is a wavelength range in which the transmittance is low, as shown by the green and blue lines. For the stub–disk coupled waveguide structure, a transmission peak appears in the transmission dip, as shown by the
  • theoretical analysis. When a disk is coupled to the upper stub 1, cavities modes can directly couple with each other through their evanescent field at small gap distances. When ω1 = ωd = ω, the transmittance of Equation 8 becomes T = |(κ1d + 1)/(κw1 + κ1d + 1)|2. This indicates that a transmission peak
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Published 22 Jan 2019

Uniform Sb2S3 optical coatings by chemical spray method

  • Jako S. Eensalu,
  • Atanas Katerski,
  • Erki Kärber,
  • Ilona Oja Acik,
  • Arvo Mere and
  • Malle Krunks

Beilstein J. Nanotechnol. 2019, 10, 198–210, doi:10.3762/bjnano.10.18

Graphical Abstract
  • thickness of 100 nm derived from SEM images (Table 3). The absorption coefficient α was determined as where d is the layer thickness, R is the total reflectance, included to compensate for thin film interference, and T is the total transmittance. The band gap of Sb2S3 layers was determined by plotting (αhν
  • 0.02°, 5°/min, silicon strip detector D/teX Ultra). The crystal structure and phase composition were analyzed using Rigaku PDXL 2 software. Optical total transmittance and total reflectance spectra of glass/ITO/TiO2 reference and glass/ITO/TiO2/Sb2S3 samples were measured in the 250–1600 nm range vs
  • optical transmittance spectra of glass/ITO/TiO2/Sb2S3 samples. Supporting Information Supporting Information File 34: Additional XRD, EDX data, SEM images, Lorentzian fitting of Sb2S3 Raman vibrational bands, and Tauc plots. Acknowledgements We acknowledge Dr. Valdek Mikli from the Laboratory of
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Published 15 Jan 2019

Co-intercalated layered double hydroxides as thermal and photo-oxidation stabilizers for polypropylene

  • Qian Zhang,
  • Qiyu Gu,
  • Fabrice Leroux,
  • Pinggui Tang,
  • Dianqing Li and
  • Yongjun Feng

Beilstein J. Nanotechnol. 2018, 9, 2980–2988, doi:10.3762/bjnano.9.277

Graphical Abstract
  • HnMn′-Ca2Al-LDHs. Figure 7b demonstrates the visible-light transmittance of HnMn′-Ca2Al-LDH/PP composite films, which is one of crucial properties of the PP products. All the samples show a similar trend demonstrating that there is a good dispersion of Ca2Al-LDHs in the PP matrix without affecting its
  • transmittance spectra of Ca2Al/PP composites. (c) SEM image and (d) Al (left) and Ca (right) element mapping of the H1M1-Ca2Al/PP composite. (a) TGA curves of HnMn′-Ca2Al/PP composites. (b) FTIR spectra of PP after different periods of thermal aging. (c) Thermal aging and (d) photo-oxidation aging of HnMn
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Published 05 Dec 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
  • the visible range; however, they are almost transparent for near-infrared radiation (NIR, 700–2500 nm), which constitutes 52% of the energy of the entire solar spectrum [2][3]. The transmittance of NIR light is one of the major energy-loss mechanisms for conventional a-Si:H solar cells [4][5]. This
  • point (0.45 V, 12.45 mA). The inset shows a photograph with the active area of ca. 0.84 cm2. The external quantum efficiency (EQE) curve in Figure 3c reveals that almost no photocurrent is generated when the wavelength of light is longer than 800 nm. The transmittance spectrum of a-Si:H solar cell
  • without back reflector in Figure 3d shows that nearly 50% of the incident light with wavelengths longer than 800 nm passes through the cell. Given the large proportion of transmittance loss in NIR range, the a-Si:H solar cell would benefit much from the incorporation of UC. Under solar irradiation, the
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Published 31 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

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  • potentiostatic bias of 1 V/Ag|AgCl for a period of 180 min. Simultaneously, the kinetics of the degradation of MB were followed using the transmittance of a 638 nm red laser and the solution measured with a photodiode at fixed distances. The evaluated solution was fed into a quartz cuvette with a peristaltic
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Published 04 Oct 2018

Au–Si plasmonic platforms: synthesis, structure and FDTD simulations

  • Anna Gapska,
  • Marcin Łapiński,
  • Paweł Syty,
  • Wojciech Sadowski,
  • Józef E. Sienkiewicz and
  • Barbara Kościelska

Beilstein J. Nanotechnol. 2018, 9, 2599–2608, doi:10.3762/bjnano.9.241

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  • frequency domain, which in turn gives results of the properties in a wide-range frequency spectrum, e.g., absorbance and transmittance of the sample, which could be directly compared to results from UV–vis measurements. The combination of experimental and computational methods in the design of materials or
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Published 28 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
  • photoelectrochemical cell properties. Figure 2a shows the thickness-dependent transmittance (T) and absorbance (A) spectra of the Co3O4 samples. Interestingly, all the Co3O4 samples exhibited fair absorbance with semitransparent optical properties. Absorbance dominates the shorter wavelengths (λ = 300–500 nm) with
  • transmittance dominating at longer wavelengths from 600 nm to the infrared (IR). Two distinct transitions in both the T and A spectra of all Co3O4 samples are attributed to two bandgaps coexisting in the Co3O4 material. A 70 nm thick Co3O4 sample exhibited a higher T in the IR region than the other Co3O4
  • out using a UV–visible spectrophotometer (Shimadzu, UV-2600) by recording the transmittance, absorbance, and reflection of the Co3O4 films in the range of 300–1100 nm. Photoelectrochemical cell measurements: Photoelectrochemical measurements were performed in a three-electrode cell with a potentiostat
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Published 12 Sep 2018

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

  • Muhammad Imran,
  • Nunzio Motta and
  • Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

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Published 13 Aug 2018

Light extraction efficiency enhancement of flip-chip blue light-emitting diodes by anodic aluminum oxide

  • Yi-Ru Huang,
  • Yao-Ching Chiu,
  • Kuan-Chieh Huang,
  • Shao-Ying Ting,
  • Po-Jui Chiang,
  • Chih-Ming Lai,
  • Chun-Ping Jen,
  • Snow H. Tseng and
  • Hsiang-Chen Wang

Beilstein J. Nanotechnol. 2018, 9, 1602–1612, doi:10.3762/bjnano.9.152

Graphical Abstract
  • transmittance of 440–450 nm. However, AAO80 has wider transmittance windows than other samples. Figure 10b shows that transmittance drastically decreases when Al is present in the sample structure. The thickness of Al in the form of Al2O3 is less than 10 nm. Figure 10c shows the modified absorption result for
  • Al after the refractive index of the imaginary part (absorption) has been multiplied by 0.01, that is, the artificial absorption of Al has decreased by 100 times. In this condition, the transmittance of the modified Al absorption is still lower than without Al calculations. This type of calculation
  • result indicates reasonable physics. Extremely low transmittance exists when the thickness of Al is approximately 790–590 nm. We redesigned the sample structure with different Al thicknesses in reference to the TEM results. We adjusted the thickness of Al2O3 as shown in Figure 11 to meet the different
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Published 30 May 2018

Tailoring polarization and magnetization of absorbing terahertz metamaterials using a cut-wire sandwich structure

  • Hadi Teguh Yudistira,
  • Shuo Liu,
  • Tie Jun Cui and
  • Han Zhang

Beilstein J. Nanotechnol. 2018, 9, 1437–1447, doi:10.3762/bjnano.9.136

Graphical Abstract
  • Discussion The absorbance (A(ω)) of the material was calculated from the reflectance (R(ω)) and transmittance (T(ω)) by using the following equation: A(ω) = 1 − R(ω) − T(ω). Smith et al. [36] defined transmittance and reflectance as and Where t(ω), r(ω), n, k0, d and z are the transmissivity, reflectivity
  • . Equation 3 can be simplified as Equation 4 shows that a high imaginary refractive index is required to achieve zero transmittance. To achieve high absorbance, the impedance of the metamaterial should match the air impedance and the imaginary part of the refractive index value should be high. The electrical
  • × 1015 s−1. ω, ωp,Au and ΓAu are the angular frequency, angular plasma frequency of gold, and damping constant of gold, respectively. Figure 3 presents the reflectance–transmittance–absorbance (RTA) simulation result of cut-wire (Figure 3a), cross-shaped (Figure 3b) and star-shaped sandwich structures
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Published 16 May 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

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  • ] is between the previous two. Thus, the observed transmittance through the membrane is expected. However, the reduced intensity rate and the shape of the intensity-versus-time curve indicating intermediate restriction steps confirm the general experience “that diffusion may be greatly restricted
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Published 09 May 2018

Interplay between pairing and correlations in spin-polarized bound states

  • Szczepan Głodzik,
  • Aksel Kobiałka,
  • Anna Gorczyca-Goraj,
  • Andrzej Ptok,
  • Grzegorz Górski,
  • Maciej M. Maśka and
  • Tadeusz Domański

Beilstein J. Nanotechnol. 2018, 9, 1370–1380, doi:10.3762/bjnano.9.129

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  • STM tip and the superconducting substrate, inducing a charge transport that, in a subgap regime () originates from the Andreev (particle to hole) scattering mechanism. The polarized Andreev current can be expressed by the Landauer–Büttiker formula where transmittance is defined as and The anomalous
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Published 07 May 2018

Semi-automatic spray pyrolysis deposition of thin, transparent, titania films as blocking layers for dye-sensitized and perovskite solar cells

  • Hana Krýsová,
  • Josef Krýsa and
  • Ladislav Kavan

Beilstein J. Nanotechnol. 2018, 9, 1135–1145, doi:10.3762/bjnano.9.105

Graphical Abstract
  • nm for FTO(A), but between 300 and 500 nm for FTO(B). Furthermore, FTO(B) is less transparent than FTO(A), whereby the optical transmittance in the range of wavelengths from 350 to 550 nm is by about 15–20% lower, which is consistent with the difference in the structure. The coherent domain size
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Published 10 Apr 2018

Comparative study of antibacterial properties of polystyrene films with TiOx and Cu nanoparticles fabricated using cluster beam technique

  • Vladimir N. Popok,
  • Cesarino M. Jeppesen,
  • Peter Fojan,
  • Anna Kuzminova,
  • Jan Hanuš and
  • Ondřej Kylián

Beilstein J. Nanotechnol. 2018, 9, 861–869, doi:10.3762/bjnano.9.80

Graphical Abstract
  • transmittance measurements presented in Supporting Information File 1. In-flight oxidation (type 3) results in an increase of the contribution of titanium oxide compounds. Namely, the band of TiO2 (IV) becomes the most intense one in the spectra (Figure 4b). The fraction of metallic compound is found to be less
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Published 12 Mar 2018

Electron interaction with copper(II) carboxylate compounds

  • Michal Lacko,
  • Peter Papp,
  • Iwona B. Szymańska,
  • Edward Szłyk and
  • Štefan Matejčík

Beilstein J. Nanotechnol. 2018, 9, 384–398, doi:10.3762/bjnano.9.38

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  • . High resolution measurements presented in the paper represent a peak FWHM ≈0.6 amu and for medium resolution ≈1.6 amu. Measurements with low and very low resolution yield FWHM of peaks ≈4.5 both, however with higher transmittance for the second one. (Regular m/Δm ratio can be hardly evaluated due to
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Published 01 Feb 2018

Nematic liquid crystal alignment on subwavelength metal gratings

  • Irina V. Kasyanova,
  • Artur R. Geivandov,
  • Vladimir V. Artemov,
  • Maxim V. Gorkunov and
  • Serguei P. Palto

Beilstein J. Nanotechnol. 2018, 9, 42–47, doi:10.3762/bjnano.9.6

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  • , Russia 10.3762/bjnano.9.6 Abstract We have studied the alignment of a nematic liquid crystal (LC) material on aluminum subwavelength nanogratings as a function of the period, p, and the slit width to period ratio, w/p. A method, based on Fourier analysis of the transmittance spectra of the LC grating
  • , which involves the ion-beam milling technique and assembly of the experimental liquid crystal cell. The second section is dedicated to data analysis, where besides polarized microscope observations, we apply the Fourier transform technique to the transmittance spectra in order to extract the effective
  • crossed polarizers with the sample axis at 45° to the polarizer axis (P1 and P2, Figure 3a) all the gratings and reference squares are bright. They provide different phase retardation and transmittance spectra as observed by their different colors in Figure 3. Moreover, in some cases, different colors are
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Published 04 Jan 2018

Study of the vertically aligned in-plane switching liquid crystal mode in microscale periodic electric fields

  • Artur R. Geivandov,
  • Mikhail I. Barnik,
  • Irina V. Kasyanova and
  • Serguei P. Palto

Beilstein J. Nanotechnol. 2018, 9, 11–19, doi:10.3762/bjnano.9.2

Graphical Abstract
  • . From the oscillograms in Figure 2, the grayscale performance (transmittance vs voltage) plot shown in Figure 3 can be derived. Almost triple voltage is required to reach the saturation level for ZLI 1957/5 LC cell compared to E7. While the E7 LC cell is operable at driving voltage amplitudes lower than
  • 6 V, the ZLI 1957/5 LC cell requires up to 20 V to reach the maximal transmittance. The maximal transmittance achieved in the of ZLI 1957/5 LC cell is a few percent higher than that in the E7 cell. There are three reasons for this phenomenon: The first reason is related to the higher refractive
  • index modulation is higher in the E7 LC cell, which can result in higher light leakage into the first and higher diffraction orders. The impact of the diffraction can also explain the higher values of transmittance we obtained by numerical simulations (see below in Figure 12) in comparison with the
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Published 02 Jan 2018

Enhanced photoelectrochemical water splitting performance using morphology-controlled BiVO4 with W doping

  • Xin Zhao and
  • Zhong Chen

Beilstein J. Nanotechnol. 2017, 8, 2640–2647, doi:10.3762/bjnano.8.264

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  • nanostructured W-doped BiVO4 in comparison with the planar structure, two representative samples with planar and nanoporous structure, 0-water and 1-EG, were selected. Figure 4 shows the light absorption efficiency of the samples 0-water and 1-EG by measuring the light transmittance and reflectance [12]. The
  • °. Elemental analysis was conducted by energy-dispersive X-ray spectroscopy (EDX) equipped on a field-emission scanning electron microscopy (FESEM, JEOL JSM-7600F). Light absorption was measured using a UV–visible spectrophotometer by measuring the reflectance and transmittance with an integrating sphere
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Published 07 Dec 2017

The role of ligands in coinage-metal nanoparticles for electronics

  • Ioannis Kanelidis and
  • Tobias Kraus

Beilstein J. Nanotechnol. 2017, 8, 2625–2639, doi:10.3762/bjnano.8.263

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  • interface, and transferred to a substrate by using a Langmuir–Blodgett trough. The single-layer nanomembrane that formed on the water surface had excellent optical transmittance of 90–97% and an electrical resistance of 1.14 × 106 Ω/sq; it reacted to mechanical bending with a 14% increase in resistance
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Published 07 Dec 2017

Refractive index sensing and surface-enhanced Raman spectroscopy using silver–gold layered bimetallic plasmonic crystals

  • Somi Kang,
  • Sean E. Lehman,
  • Matthew V. Schulmerich,
  • An-Phong Le,
  • Tae-woo Lee,
  • Stephen K. Gray,
  • Rohit Bhargava and
  • Ralph G. Nuzzo

Beilstein J. Nanotechnol. 2017, 8, 2492–2503, doi:10.3762/bjnano.8.249

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  • changes has been previously shown to be better for the full-3D PC structure as compared with the quasi-3D counterpart, the transmittance spectra for the former over a range of 355–1000 nm were collected as a function of time while PEG solutions of different concentration (from 1.4 to 5.6 wt %) were passed
  • features at frequencies in the visible range (wavelengths spanning 600–800 nm). From the transmittance measurements made in air (shown in Figure 1e), we can further infer that the shifts of peak maxima that occur as a result of changes made in the metal overlayer composition are small if nanohole
  • , corresponds to the case for the noted modes of benzenethiol where the PC provides maximal transmittance at wavelengths of 821 nm and 840 nm (the halfway point between λex and λRaman). The experimental transmission spectra of Au50 and Ag40Au10 quasi-3D PCs measured in air shown in Figure 4b qualitatively
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Published 24 Nov 2017

Optical contrast and refractive index of natural van der Waals heterostructure nanosheets of franckeite

  • Patricia Gant,
  • Foad Ghasemi,
  • David Maeso,
  • Carmen Munuera,
  • Elena López-Elvira,
  • Riccardo Frisenda,
  • David Pérez De Lara,
  • Gabino Rubio-Bollinger,
  • Mar Garcia-Hernandez and
  • Andres Castellanos-Gomez

Beilstein J. Nanotechnol. 2017, 8, 2357–2362, doi:10.3762/bjnano.8.235

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  • of the exfoliated flakes can be obtained from the quantitative analysis of the transmission-mode images, acquired on the Gelfilm carrier substrate prior to the transfer. Figure 3 shows the transmittance extracted from the red, green and blue channel of the digital images where a monotonic thickness
  • onto a 92 nm SiO2/Si substrate. Below (d) to (f) the colour chart shows a coarse guide to determine the thickness of franckeite flakes on 92 nm SiO2/Si substrates through their apparent colour. Thickness dependence of the transmittance acquired from transmission-mode optical images of franckeite flakes
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Published 08 Nov 2017

High-stress study of bioinspired multifunctional PEDOT:PSS/nanoclay nanocomposites using AFM, SEM and numerical simulation

  • Alfredo J. Diaz,
  • Hanaul Noh,
  • Tobias Meier and
  • Santiago D. Solares

Beilstein J. Nanotechnol. 2017, 8, 2069–2082, doi:10.3762/bjnano.8.207

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  • nacre-mimetics by designing an optically transparent and electron conductive coating based on PEDOT:PSS and nanoclays Laponite RD and Cloisite Na+. We carry out extensive characterization of the nanocomposite using transmittance spectra (transparency), conductive atomic force microscopy (conductivity
  • characterized using optical transmittance spectroscopy. Nanocomposites prepared from Laponite RD (LAP) and Cloisite Na+ (montmorillonite, MTM) were also compared to the bare PEDOT:PSS to evaluate the change in transmittance caused by the addition of nanoclay. Figure 1a demonstrates the tunability of the
  • nanocomposites’ transparency by changing the thickness. The samples are casted onto glass substrates and the grey dashed line represents the transmittance across the bare substrate. The trend shows that, as the thickness decreases, more light is transmitted, i.e., the transmittance approaches the value of the
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Published 04 Oct 2017

Two-dimensional carbon-based nanocomposites for photocatalytic energy generation and environmental remediation applications

  • Suneel Kumar,
  • Ashish Kumar,
  • Ashish Bahuguna,
  • Vipul Sharma and
  • Venkata Krishnan

Beilstein J. Nanotechnol. 2017, 8, 1571–1600, doi:10.3762/bjnano.8.159

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  • high transparency, high elastic modulus (≈1 TPa), high mechanical strength (≈1060 GPa), and optical transmittance (≈97.7%) [44]. These superior properties of graphene make it a potential candidate for technological application such as such as optical electronics [45], photosensors [46] and
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Published 03 Aug 2017

Growth, structure and stability of sputter-deposited MoS2 thin films

  • Reinhard Kaindl,
  • Bernhard C. Bayer,
  • Roland Resel,
  • Thomas Müller,
  • Viera Skakalova,
  • Gerlinde Habler,
  • Rainer Abart,
  • Alexey S. Cherevan,
  • Dominik Eder,
  • Maxime Blatter,
  • Fabian Fischer,
  • Jannik C. Meyer,
  • Dmitry K. Polyushkin and
  • Wolfgang Waldhauser

Beilstein J. Nanotechnol. 2017, 8, 1115–1126, doi:10.3762/bjnano.8.113

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  • found to have a direct bandgap of ≈1.8 eV [8]. Relatively high mechanical flexibility, good optical transmittance, high current on/off ratios in field effect transistor (FET) geometries and reasonably good field effect mobilities make atomically thin MoS2 layers a promising candidate for flexible and
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Published 22 May 2017

Study of the correlation between sensing performance and surface morphology of inkjet-printed aqueous graphene-based chemiresistors for NO2 detection

  • F. Villani,
  • C. Schiattarella,
  • T. Polichetti,
  • R. Di Capua,
  • F. Loffredo,
  • B. Alfano,
  • M. L. Miglietta,
  • E. Massera,
  • L. Verdoliva and
  • G. Di Francia

Beilstein J. Nanotechnol. 2017, 8, 1023–1031, doi:10.3762/bjnano.8.103

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  • account the filter mass. UV–vis (200–850 nm) transmittance spectra of a diluted set of this dispersion have been performed by means of a Shimadzu UV-1800 UV–vis spectrophotometer. In all cases, UV–vis absorbance spectra have been measured that appeared flat and featureless [5]. The absorption coefficient
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Published 09 May 2017
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