The contribution of ions to the electrical impedance of an electrolytic cell limited by perfect blocking electrodes is determined by considering the role of the anomalous diffusion process and memory effects. Analytical solutions for fractional diffusion equations together with Poisson's equation relating the effective electric field to the net charge density are found. This procedure allows th...

We calculate the entropy of a two-dimensional Fermi Liquid(FL) using a model with a contact interaction between fermions. We find that there are T 2 contributions to the entropy from interactions separate from those due to the collective modes. These T 2 contributions arise from non-analytic corrections to the real part of the selfenergy which may be calculated from the leading log dependence o...

Knowledge of longitudinal electron bunch profiles is vital to optimize the performance plasma wakefield accelerators and x-ray free laser linacs. Because their importance these novel applications, noninvasive frequency domain techniques are often employed reconstruct from coherent synchrotron, transition, or undulator radiation measurements. In this paper, we detail several common reconstructio...

New metrology for characterizing chemically amplified resist is needed in order to meet the stringent demands of the DUV lithographic technologies. In this paper, we present a general model for DUV resist optical constants. In this model, we assume that the photoresist is homogeneous and can be decomposed into several “components” according to their distinct and signatures over a broad range of...

Nanostructured amorphous films exhibit complex thermodynamic and kinetic behavior. To understand the structure and properties of nanostructured amorphous films in silicon based ceramics (Si3N4, SiC, Si) and in SrTiO3 ceramics, we have focused on experimental studies to determine the interband electronic structure and optical properties. We use vacuum ultraviolet spectroscopy for bulk materials,...

Fiber-optic chemical sensing has been demonstrated with a side-polished single-mode optical fiber, evanescently coupled to chemically sensitive Langmuir-Blodgett (LB) overlay waveguides. The sensors exhibit a channel-dropping response centered on a wavelength that is dependent on the thickness and the refractive index of the overlay waveguide. It has been shown that pH-sensitive organic dyes pr...

We want to clarify a few issues about using optical absorption spectra for characterizing carbon nanotubes. The common method of using optical density for nanotube counting is reasonable in the nearinfrared and visible spectral region, but fails for the mid and far infrared, where metallic tubes can be unambigously detected. By performing Kramers–Kronig transformation on wide-range transmittanc...

Amorphous Ta-oxide and Sn-nitride thin films were prepared by reactive sputter deposition on smooth float glass substrates and investigated ex situ using reflection mode XAFS. The absorption coefficient mu and its fine structure were extracted from the measured reflection mode XAFS spectra with a method based on the Kramers-Kronig transform. Bond distances, coordination numbers and Debye-Waller...

Transport properties of one-dimensional Kronig-Penney models with binary correlated disorder are analyzed using an approach based on classical Hamiltonian maps. In this method, extended states correspond to bound trajectories in the phase space of a parametrically excited linear oscillator, while the on site-potential of the original model is transformed to an external force. We show that in th...

We have directly measured the intensity distribution, gain, and induced phase shift between two fiber lasers that are coherently combined by a Dammann grating. The induced phase shift between the lasers has been shown to approximately cancel out any applied phase error introduced into the cavity, allowing the combined resonator to operate at an efficient low-loss state. We show that the origin ...