In this contribution we are concerned with efficient model reduction for multiscale problems arising in lithium-ion battery modeling with spatially resolved porous electrodes. We present new results on the application of the reduced basis method to the resulting instationary 3D battery model that involves strong non-linearities due to Buttler-Volmer kinetics. Empirical operator interpolation is...

We present preliminary results showing electronic energy transfer (EET) between benzene and biacetyl and between naphthalene and anthracene in a supersonic jet expansion and in bichromophoric molecules in solution. Excitation of several vibronic levels of benzene (donor) in the presence of biacetyl (acceptor) shows quenching of benzene emission with simultaneous appearance of biacetyl fluoresce...

Expressions are derived for the fluorescence response functions of organic solution systems in which non-radiative energy transfer occurs and obeys either Stern-Volmer or Forster kinetics. Scintillation pulse shapes are evaluated for typical crystals, binary and temary liquid solutions, and binary plastic solutions. The scintillation decay time is inadequate to describe the time characteristics...

Abstract – In this report, time-dependent carrier concentration in electrolytic cells, due to some basic periodic shapes of excitation signal, has been studied. Exact analytical solutions for step, sinusoidal and periodic pulse reverse inputs are derived. The effect of frequency, forward and reverse amplitudes, and duty cycle are investigated. An analytical solution of the model is obtained as ...

Thermodynamic analysis and molecular dynamics simulations were conducted to systematically study the size-dependent electrochemical response of solids. By combining the generalized Young-Laplace equation with the popular Butler-Volmer formulation, the direct influence of surface stress on solid film electrochemical reactions was isolated. A series of thermodynamic formulas were developed to des...

We study the photoreduction of adsorbed copper ions onto Au nanoparticles, on an indium tin oxide (ITO) electrode in an aqueous electrochemical cell, as a function of applied voltage and laser intensity. The photocurrent is a nonlinear function of laser intensity and increases sharply with cathodic voltage in the underpotential deposition region. The photoreduction is attributed to laser heatin...

Reduction and nanoparticle nucleation of Cu2+ by decamethylferrocene was studied with cyclic square-wave voltammetry at a microscale liquid–liquid interface established the tip micropipette. With voltammetry, two reduction steps could be distinguished as separate current waves. Comparing experimental results finite element method simulations, particle growth observed an increasing limiting curr...