The Raman enhancement effect on a thin GaSe flake and its thickness dependence
The GaSe flake can enhance Raman signal and the effect decreases with its thickness.
Materials Literature
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Geometrical and morphological optimizations of plasmonic nanoarrays for high-performance SERS detection
Here we present an in-depth and comprehensive study of the effect of the geometry and morphology of nanoarray (NA) substrates on their surface-enhanced Raman scattering (SERS) performance. The high-quality SERS-active NA substrates of various unit shapes and pitches are assembled through electron beam lithography and…
Hierarchical porous CNTs@NCS@MnO 2 composites: rational design and high asymmetric supercapacitor performance
A hierarchical porous CNTs@NCS@MnO 2 composite was synthesized by a facile in situ chemical polymerization coating method, followed by a hydrothermal process, which exhibits high asymmetric performance.
Polyoxometalate-based metal–organic coordination networks for heterogeneous catalytic desulfurization
Single crystals and nanocrystals of polyoxometalate-based metal-organic coordination networks for heterogeneous catalytic desulfurization.
Effective medium theory based modeling of the thermoelectric properties of composites: comparison between predictions and experiments in the glass–crystal composite system Si 10 As 15 Te 75 –Bi 0.4 Sb 1.6 Te 3
An experimental and modeling study of glass–crystal Si 10 As 15 Te 75 –Bi 0.4 Sb 1.6 Te 3 composites.
Reversible piezochromism in a molecular wine-rack
The highly-polymorphic, strongly-coloured 'ROY' system exhibits a yellow → orange → red piezochromic response under hydrostatic compression. The 'Y' (yellow) polymorph accommodates the effect of pressure via a wine-rack-type mechanism, made accessible by the conformational flexibility of the molecule, while retaining…
The enhancement of a self-powered UV photodetector based on vertically aligned Ag-modified ZnO nanowires
A Ag nanoparticle-modified ZnO NWs based UV detector displays an excellent performance in UV detection such as high responsivity and fast response time.
The effect of light rare earth element substitution in Yb 14 MnSb 11 on thermoelectric properties
The zT of Yb 14 MnSb 11 is improved by the introduction of a light rare earth element, RE 3+ (RE = Pr, Sm) with partially filled f-levels. The carrier concentration is reduced upon substituting RE 3+ for Yb 2+ , adding one electron to the system and improving the zT values 30–40% over that of the pristine material.
Ring-opening polymerization of rac-lactide and α-methyltrimethylene carbonate catalyzed by magnesium and zinc complexes derived from binaphthyl-based iminophenolate ligands
A series of racemic 2-[(2′-(dimethylamino)binaphthyl-2-ylimino)methyl]-4-R2-6-R(1)-phenols (L1H–L6H) were reacted with 1 equiv. of Mg[N(SiMe3)2]2 or Zn[N(SiMe3)2]2 to provide three heteroleptic magnesium silylamido complexes [(L4–(6))MgN(SiMe3)2] (4a: R(1) = R(2) = cumyl; 5a: R(1) = CPh3, R(2) = Me; 6a: R(1) = CPh3, R…
Graphene-reinforced poly(vinyl alcohol) electrospun fibers as building blocks for high performance nanocomposites
Graphene-containing fibrous structures with a high level of affinity towards a polymer matrix solution have been proved to be promising for high performance macroscopic nanocomposite reinforcement purposes.
Mössbauer Spectroscopy, Structural and Magnetic Studies of Zn2+ Substituted Magnesium Ferrite Nanomaterials Prepared by Sol‐Gel Method
Zinc substituted magnesium ferrite nanomaterials Mg1−xZnxFe2O4 (x = 0, 0.1, 0.3, 0.5, 0.7) powders have been prepared by a sol‐gel autocombustion method. The lattice parameter increases with increase in Zn concentration, but average crystallite size tends to decrease by increasing the zinc content. SEM results indicat…
Chronic dosing of a simulated pond ecosystem in indoor aquatic mesocosms: fate and transport of CeO 2 nanoparticles
Indoor aquatic mesocosms were designed to mimic pond ecosystems contaminated by a continuous point-source discharge of cerium oxide nanoparticles (CeO 2 -NPs).
Experimental Investigation and Modeling of the Performance of Pure and Mixed Surfactant Inhibitors: Aggregation, Adsorption, and Corrosion Inhibition on Steel Pipe in Aqueous Phase
Two models for the prediction of corrosion inhibition efficiency of various pure surfactant and mixed surfactants in salt-containing solution are developed, compared, and validated. The two prediction models are based on a modified Langmuir adsorption (MLA) sub-model and a modified Quantitative Structure Activity Rela…
Gundelia tournefortii as a Green Corrosion Inhibitor for Mild Steel in HCl and H2SO4 Solutions
The inhibitive action of leaf extract of Gundelia tournefortii (G. tournefortii) on mild steel corrosion in 2.0 M HCl and 1.0 M H2SO4 solutions was studied using weight loss measurement, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The inhibition efficiency was found to inc…
Relationship between entropy and diffusion: A statistical mechanical derivation of Rosenfeld expression for a rugged energy landscape
Diffusion-a measure of dynamics, and entropy-a measure of disorder in the system are found to be intimately correlated in many systems, and the correlation is often strongly non-linear. We explore the origin of this complex dependence by studying diffusion of a point Brownian particle on a model potential energy surfa…
Pterocarpus marsupium Derived Phyto-Synthesis of Copper Oxide Nanoparticles and their Antimicrobial Activities
In present study, copper oxide nanoparticles (CuONPs) synthesized by quick and eco-friendly phytogenicreduction of copper salt (copper sulphate CuSO 4 .H 2 O) solution with Pterocarpus marsupium extract. UV-VIS spectrometry indicated formation of nanoparticles via absorption spectra of copper colloidal solution at 442…
Nonlocal vibration of a fractional order viscoelastic nanobeam with attached nanoparticle
We propose a novel mathematical framework to examine the free damped transverse vibration of a nanobeam by using the nonlocal theory of Eringen and fractional derivative viscoelasticity. The motion equation of a nanobeam with arbitrary attached nanoparticle is derived by considering the nonlocal viscoelastic constitut…
Biosynthesis of Nanoparticles : A Review
Nanotechnology has now advanced into a phase where application of nanoparticles in various domains of science and technology is being cited. At the same time employment of biosynthetic methods for synthesizing nanoparticles, have drawn pronounced attention of researchers. And is now, being looked forward as a simple a…
The selective catalytic reduction of NO x over a Cu/ZSM-5/SAPO-34 composite catalyst
A series of Cu/ZSM-5/SAPO-34 composite catalysts with varying ZSM-5 mass fraction were synthesized using a pre-seed method, and their catalytic performances were tested for selective catalytic reduction (SCR) of NO with NH 3 .
Sub-ms dynamics of the instability onset of electrospinning
Electrospun polymer jets are imaged for the first time at an ultra-high rate of 10,000 frames per second, investigating the process dynamics, and the instability propagation velocity and displacement in space. The polymer concentration, applied voltage bias and needle-collector distance are systematically varied, and…