Nanoscience and Nanotechnology Letters Journal Impact Factor & Information

Publisher: American Scientific Publishers

Journal description

Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.

Current impact factor: 1.44

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 1.444
2012 Impact Factor 0.886
2011 Impact Factor 0.528

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.89
Cited half-life 1.60
Immediacy index 0.31
Eigenfactor 0.00
Article influence 0.21
Website Nanoscience and Nanotechnology Letters
ISSN 1941-4900
Document type Journal

Publisher details

American Scientific Publishers

  • Pre-print
    • Author cannot archive a pre-print version
  • Post-print
    • Author cannot archive a post-print version
  • Classification
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Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: We have systematically investigated photoluminescence properties of surface microstructure of Te-doped n-type gallium antimonide (GaSb) irradiated by femtosecond laser, observe the surface topography with SEM (scanning electron microscope). Following the previous work, choose the optimal condition for passivation. Then passivated the sample with ammonium sulfide ((NH4)2S) for analyse Photoluminescence Characterisation easily. Compare with the unlaser treatment sample, laser irradiated sample's main luminous peak is slightly blue shift about 14 meV in 300 K. It can be attribute to the change in the source of the emission peak. The laser-induced sample show a new strong peak appeared at 781 meV in 150 K. We assume this enhanced peak is a response of surface micro-structure.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1736
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    ABSTRACT: An effective approach to significantly improve electro-activated recovery performance of shape memory polymer (SMP) nanocomposites was investigated in this study, which is based on Joule heating triggered shape recovery through formation of a three-dimensional template of self-assembled carbon nanofibres (CNFs) inside the SMP. This template approach allows effective electro-actuation and resistive heating, mainly attributing to conductive CNF assembly. Electro-activated recovery of the SMP nanocomposites was monitored and the resultant temperature distribution in the SMP nanocomposite during recovery was characterized. Furthermore, the relative thermal conductivity was simulated using ANSYS FLUENT software in order to optimize the structure design for the CNF template.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1900
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    ABSTRACT: A facile approach for the fabrication of nonenzymatic hydrogen peroxide sensor based on conducting polyaniline (PANI) nanofibers functionalized with gold nanoparticles (AuNPs) was demonstrated. With the introduction of thioglycolic acid (TA) dopant, small and well-dispersed AuNPs were immobilized on the PANI nanofibers. Due to the stabilization by the TA linked with PANI, the growth and aggregation of AuNPs were restrained, leading to the formation of AuNPs with smaller size and well dispersion. These novel nanomaterials exhibit fast response, broad linear range, good reproducibility and highly sensitive for the detection of H2O2.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1906
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    ABSTRACT: In this study, we demonstrate a Na+ induced cubic-to-hexagonal phase transition in NaGdF4 nanocrystals. Based on such mechanism, a convenient method has been established to synthesize water-soluble and hexagonal-phase NaGdF4 nanocrystals by employing excess Na+ ions in the ethylene glycol solvent. By co-doping Yb, Er or Yb, Tm ions, the synthesized NaGdF4:Yb,Er and NaGdF4:Yb,Tm nanocrystals exhibit bright upconversion fluorescence upon 980 nm diode laser excitation. This strategy will facilitate the synthesis of hexagonal phase lanthanide-doped NaGdF4 nanocrystals with good biocompatibility for bioimaging applications.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1904
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    ABSTRACT: A novel polydopamine functionalized reduced graphene oxide/palladium (PDA-RGO/Pd) nanocomposite modified electrode was fabricated, and applied for the electrochemical determination of dopamine. The surface modification of GO sheets with PDA via a self-polymerization process and the formation of PDA-RGO/Pd composites were confirmed by UV-Vis spectroscopy, FTIR and SEM. The electrocatalytic activity of PDA-RGO/Pd to the oxidation of dopamine was evaluated using cyclic voltammetry and linear sweep voltammetry. The results showed that the anodic peak currents of DA were linearly proportional to its concentration in the range of 0.05 to 1 mM with a detection limit of 6.2 μM (S/N = 3). In addition, the proposed sensor exhibited excellent anti-interference property.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1910
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    ABSTRACT: Hydrophilic and hydrophobic quantum dots (QDs) including oleic acid (OA)-capped CdSe, thiodipropioyic acid (TDPA)-capped CdSe, and thioglycollic acid (TGA)-capped CdTe were incorporated into poly(vinyl pyrrolidone) (PVP) fibers via an electrospinning method using a PVP ethanol solution with PVP weight ratio of 8% which was obtained by optimizing preparation conditions. The amounts of the QDs were adjusted to investigate the effect of QD surface state on the morphologies of fibers. The QDs retained their photoluminescence (PL) peak wavelengths in PVP solutions and fibers. The PVP fiber with aqueous CdTe QDs was fabricated by dispersing QDs in water while the hydrophobic ones were firstly dispersed in hexane. With increasing the amount of CdSe QDs, the PL intensity of the fibers was gradually enhanced. In addition, CdSe nanorods were characterized by evident unevenness and local enrichment in the fibers because of rod morphology and properties of TDPA ligand. The fiber surface was rather smooth and it almost had no wrinkles.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1911
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    ABSTRACT: We report the synthesis of the beta-Gallium Oxide (β-Ga2O3) nanoflags with a novel shape of two-dimensional nanostructure and its potential application on UV light detector. The β-Ga2O3 nanoflags were prepared using gold nanoparticles as catalyst by the chemical vapor deposition method. The growth mechanism of nanoflags follows the vapor–liquid–solid mode. The properties of the β-Ga2O3 nanoflags were charactered by various measurements, including optical absorption spectrum, the energy dispersive X-ray spectroscopy spectrum, X-ray diffraction pattern and photoluminescence spectrum. The scanning electron microscopy images indicate that the gallium oxide (Ga2O3) nanoflags grow via mechanism. The X-ray diffraction pattern and the energy dispersive X-ray spectroscopy spectrum revealed that the Ga2O3 nanoflags have a crystal structure of monoclinic β-Ga2O3 with high purity and density. An absorption edge at ∼270 nm in the optical absorption spectrum and a strong ultraviolet peak at ∼349 nm were also observed at room temperature, indicated that the Ga2O3 nanoflags are the promising wide-bandgap oxides with twodimensional structure to exploit the potential optical functionalities in the field of solar-blind detectors and ultraviolet light emitters.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1914
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    ABSTRACT: In this paper, a 17 × 17 arrayed waveguide grating (AWG) multiplexer with flat spectral response has been designed and fabricated by using FPE polymer materials. Experimental results show that the central wavelength is 1550.86 nm, and 3-dB bandwidth is about 0.478 nm, insertion loss is 10.5 dB, crosstalk is about –20.5 dB. Simulated results show that fabrication processing result in the shift of the transmission spectrum compared with the device theoretically designed. Furthermore, the transmission characteristics are discussed, and some efficient ways are reported.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1895
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    ABSTRACT: This paper reports a voltammetric sensor for salicylic acid based on graphene-oxide-modified glassy carbon electrode (GO-GCE). Graphene oxide has been synthesized by a modified Hummers method, and shows predominantly hydroxyl, carbonyl, and epoxy groups. The oxidation of salicylic acid has been studied on glassy carbon electrode (GCE) and GO-GCE, and is found to be an irreversible reaction with a peak potential at 0.79–0.82 V (vs. saturated calomel electrode). The prepared GO-GCE has 2.19 times more surface area than bare GCE, and behaves as a reversible redox platform for the ferricyanide system. The increased area of the electrode, along with the interactions with the functional groups on GO, results in higher currents for the oxidation of salicylic acid. Both GCE and GO-GCE show linear increase of peak current with respect to salicylic acid concentration in differential pulse voltammetry (DPV) studies. The glassy carbon electrode exhibits a linear range of 25 to 1400 μM with a sensitivity of 0.321 μA/μM-cm2, while the GO-modified GCE exhibits a wider linear range of 25 to 2250 μM with a higher sensitivity of 0.396μA/μM-cm2 and a detection limit of 10 μM. Interference studies have been conducted with ascorbic acid and uric acid, and clear peak separation is observed.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1909
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    ABSTRACT: MnFe2O4 and Mn0.4Co0.6Fe2O4 samples at pH 11 and sintering temperatures 300 °C, 600 °C and 900 °C, were prepared by co-precipitation technique. All properties of the samples are highly dependent on sintering temperature. The samples were analyzed using XRD to study the particle size and crystalline nature, and both increase with increasing sintering temperatures. The SEM micrographs were studied in order to analyze the morphology and surface structure of the samples. The images show the presence of amorphous powders at lower temperatures and highly ordered and well defined particles of larger particle size at higher temperatures. The FTIR peaks show bending and stretching of characteristic bonds in the samples. The magnetic studies were carried out using VSM and show soft magnetic nature with increasing magnetic properties at higher sintering temperatures. Batch adsorption studies were conducted to find Cr(VI) adsorption efficiency of the samples. The adsorption efficiency depends on quantity of adsorbent, initial concentration of adsorbate and the sintering temperatures of ferrite samples.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1925
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    ABSTRACT: To resolve the contradiction between breakdown voltage and on-resistance for GaN-based HFETs, we proposed a nanoscale GaN pnp-superjunction vertical HFET (SJ-VHFET) with p-GaN current blocking layer. High breakdown voltage and low on-resistance could be abtained simultaneously by optimizing the key electrical and structural parameters, including doping concentration, widths and thickness of different regions, in the pnp-superjunction buffer layer. The breakdown voltage (BV) and specific on-resistance (R on, sp) are 2604 V and 8.3 mΩ ·cm2 respectively with buffer layer thickness of 10 μm, when the width and doping concentration of n-GaN and doping concentration of p-GaN region are 6 μm, 2 × 1015 cm–3 and 4 × 1015 cm–3 respectively. Compared with the results of reported conventional GaN VHFET without superjunction, the breakdown voltage increases by 91% and the specific on-resistance reduces by 66%. In addition, higher breakdown voltage and higher FOM (BV2/R on, sp) may be achieved by further optimizing the key structure parameters.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1912
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    ABSTRACT: Al diffusion from sapphire substrates to MgxZn1–x O alloy thin films fabricated at high temperature has been investigated by a secondary ion mass spectrometry. Al impurities were detected with high concentration of above 1019 cm–3 at the surface of Mgx Zn1–x O thin films. Electrical properties measurement indicates that the carrier concentration of Mgx Zn1–x O thin film significantly decreases with the increase of Mg content, from ∼1018 cm–3 in ZnO to ∼1015 cm–3 in Mg0.16Zn0.84O alloy. Temperature-dependent photoluminescence demonstrates that Al impurity has a deeper donor level in Mg0.16Zn0.84O than in ZnO. Furthermore, the first-principles calculations show that ionization energy of Al substituted cation site (AlCA) in Mgx Zn1–x O alloy increases with the increase of Mg content, well supporting the experimental result. The increasing ionization energy of Al impurity with increasing Mg content is due to the CBM shift to high energy as increasing Mg content.
    Nanoscience and Nanotechnology Letters 02/2015; 7(2). DOI:10.1166/nnl.2015.1903
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    ABSTRACT: This paper reports on the plasma polymerization of amine-containing films from 3-aminopropyl trimethoxysilane (APTMS) on fluorocarbon polymers, deposited by means of a μPlasmaPrint setup. The setup, which utilizes a (multi) pin-to-plate dielectric barrier discharge at atmospheric pressure, enables area-selective functionalization by means of a dot-wise patterning of the plasma treatment/deposition. The present study addresses the identification of the chemical structure of the polymerized APTMS films as well as the interface development between the APTMS polymer and the fluorocarbon polymer. Furthermore, this study reports on an example of an immobilization reaction on patterned polymers, namely the electrodeless deposition of nickel pads.
    Nanoscience and Nanotechnology Letters 01/2015; 7(1). DOI:10.1166/nnl.2015.1945
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    ABSTRACT: Membrane separations are a crucial technology in water desalination, wastewater treatment, bioprocessing, and the food and beverage industries. Most commercial membranes available today for liquid filtration were developed using trial-and-error methods and are based on a handful of materials. Recent efforts use polymer self-assembly at the nanometer scale to develop membranes with improved permeability, selectivity, and fouling resistance. For example, block copolymer self-assembly into cylindrical or gyroid microphases has been used for membranes with very high flux and tight selectivity and can be integrated into large scale membrane manufacture. Graft copolymer microphase separation has been used to form membranes with ∼1 nm size cut-offs, while exceptional selectivity has been achieved by desalination membranes obtained from polymerizable liquid crystals. Surface segregation of amphiphilic copolymers has been also used to manufacture fouling resistant membranes in a single step. All these examples represent a new approach to the development of novel membranes, i.e., the design of materials with tailored surface properties and nanostructures.
    Nanoscience and Nanotechnology Letters 01/2015; 7(1):21-32. DOI:10.1166/nnl.2015.1930
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    ABSTRACT: The stearic acid modified CuO (SA-CuO) nanorods with an average diameter and length of 40–60 nm and 100–200 nm, respectively, were synthesized by a solvothermal method. The modified ligand is effective to improve the lipophilic property of SA-CuO nanorods. After the SA-CuO nanorods were dispersed in heat transfer oils, the nanofluids exhibit much higher thermal conductivity than base oil. The thermal conductivities of nanofluids increase with the increase of weight fraction of nanorods and have been raised to 4.70 times as high as that of base liquid at a weight fraction of 0.8%. The promising features offer potential application in thermal energy engineering.
    Nanoscience and Nanotechnology Letters 01/2015; 7(4). DOI:10.1166/nnl.2015.1923