Abstract In this work were numerically analyzed the third-order nonlinear optical effects exhibited by combinations of uncoupled monometallic silver, gold and platinum nanoparticles. The nanosystems considered to be homogeneous surrounded a dielectric matrix. design nanostructures was evaluated as collective behavior resulting from specific order set in trilayer tandem form. characteristic Loca...

This paper argues that innovation can be best understood as an information process which is then concretized as a product that meets demand. Two very different firms, Canon Inc. and Apple Computer Inc., are used as case study illustrations. Innovation does not proceed through logical deduction, but rather is furthered by the use of metaphors and analogies. The bureaucratic and staid structures ...

The observation of Manchot? that sodium pentacyano-ammineferroate2 I absorbs oxygen has led Baudisch and his coworkers3 to study the catalytic action of this salt, as well as of its water analogue II, in the oxidation of pyrimidines and purines. The present authors have previously reported in this journal4 on the nature of the oxidation products obtained. In the present paper the problem is con...

In this paper we discuss the newly synthesized binuclear species [Cu2(L(PY18))2(μ1,1-N3)2(N3)2] (1) and [Cu2(L(PY18))2(μ1,3-SCN)2(NCS)2] (2), as obtained from the monometallic precursor [Cu(L(PY18))Br2]. These gemini metallosurfactants incorporate metal/anion cascade cores and are investigated by experimental and theoretical methods. Diagnostic IR stretches support the presence of μ1,1-bridged ...

The oxygen reduction reaction (ORR) is a key in polymer electrolyte fuel cells and metal–air batteries. In these electrochemical systems, platinum group metals (PGMs) have been widely used as ORR electrocatalysts. Because of material cost scarcity metals, non-PGM electrocatalysts are considered to be an ideal alternative for mass production with low cost. Many intensively studied such pyrolyzed...

Synthesized palladium-coated iron-iron oxide ([email protected]x/Pd) nanoparticles (NPs) using the successive salt reduction method are tested for their activity and stability toward formate oxidation (FO) electrochemical CO2 to (eCO2RF). The experimental results FO show a current density at 0.12 V vs. Ag/AgCl of 1.65 mA/cm2 over 1 h, which is 16 times higher than that Pd NPs. Furthermore, same...

Poisoning tolerance of Pt-based catalyst is an important parameter for the designing direct electrochemical fuel cells (EFCs) based on electrooxidation alcohols (i.e. methanol, ethanol). Applicability ethanol EFCs still challenging taking into account lack effective electrocatalysts which are able to produce high faradic current densities and stability towards strong adsorption C1 C2 oxidation ...