Electrical excitation

Electrical excitation of surface plasmons.

We exploit a plasmon mediated two-step momentum down-conversion scheme to convert low-energy tunneling electrons into propagating photons. Surface plasmon polaritons (SPPs) propagating along an extended gold nanowire are excited on one end by low-energy electron tunneling and are then converted to free-propagating photons at the other end. The separation of excitation and outcoupling proves tha...

Imaging electrical excitation inside the myocardial wall

Cardiac arrhythmias are often triggered by ectopic membrane depolarization originating deep inside the myocardial wall. Here we propose a new method utilizing a novel near-infrared voltage-sensitive fluorescent dye DI-4-ANBDQBS to determine the three-dimensional (3D) coordinates of the sources of such depolarization. We tested the method in live preparations of pig left and right ventricular my...

Excitation patterns in three-dimensional electrical impedance tomography.

Electrical impedance tomography (EIT) is a non-invasive technique that aims to reconstruct images of internal electrical properties of a domain, based on electrical measurements on the periphery. Improvements in instrumentation and numerical modeling have led to three-dimensional (3D) imaging. The availability of 3D modeling and imaging raises the question of identifying the best possible excit...

Instability of Excitation Waves Induced by Electrical Fields

Strength-Duration Curves and the Theory of Electrical Excitation.

regardless of how carefully the particular prediction-basis is computed, it indicates that some major factor or factors are omitted, or are improperly weighted or coordinated, in the particular prediction-basis being tested for accuracy. In comparing two different prediction-bases against the same subsequently determined set of actual distribution-values, the coefficient of predictionaccuracy t...