How does a reversible electrode respond in a.c. voltammetry? Part 2: solutions for the periodic current amplitudes

2019 ◽  
Vol 23 (7) ◽  
pp. 2061-2071
Author(s):  
Jan C. Myland ◽  
Keith B. Oldham
Keyword(s):  
Periodic Current

Graphic Records of Impact

1891 ◽  
Vol 17 ◽  
pp. 192-192
Author(s):  
Tait
Keyword(s):  
Tuning Fork ◽  
The Other ◽  
Plate Glass ◽  
Printing Ink ◽  
Periodic Current ◽  
Impact Experiments ◽  
Needle Point

The apparatus for Impact experiments, which was exhibited to the Society on 20th February 1888, has been greatly improved by the substitution of a very true slab of plate-glass, thinly covered with printing-ink, for the sheet of cartridge paper. The record is made by a needle-point which projects from the falling body, and which is kept in constant contact with the plate by means of a light spring. The time of rotation of the plate is given by a tuning-fork, with a small bristle attached, which is kept in vibration by a periodic current, and records alongside of the other tracings.

Evaluation of the surface area of RuO2 electrodes by periodic current signals

1998 ◽  
Vol 457 (1-2) ◽  
pp. 109-117 ◽  
Author(s):  
J.L. Fernández ◽  
C.A. Marozzi ◽  
M.R. Gennero de Chialvo ◽  
A.C. Chialvo
Keyword(s):  
Surface Area ◽  
Periodic Current

Periodic Current Injection (PCI) -A New Method to Image Steady-State Membrane Potential of Single Neurons in situ Using Extracellular Voltage-Sensitive Dyes

1995 ◽  
Vol 50 (5-6) ◽  
pp. 435-438 ◽  
Author(s):  
Alexander Borst
Keyword(s):  
Steady State ◽  
Membrane Potential ◽  
Current Injection ◽  
New Method ◽  
Excitation Wavelength ◽  
Single Neurons ◽  
Voltage Sensitive Dye ◽  
Difference Image ◽  
Periodic Current

Abstract A new method is described which allows to image the steady-state distribution of m em ­ brane potential of single neurons in situ. The method consists of staining the tissue with an extracellular voltage-sensitive dye (Di-4-ANEPPS) and impaling a single neuron with a microelectrode. After focusing the imaging system onto the cell a large series of images are taken with a CCD camera at the appropriate excitation wavelength of the voltage-sensitive dye while the neuron’s membrane potential is shifted by a periodic current injection (PCI). Afterwards two groups of images are averaged separately: those images while the cell was at rest and those images while the cell was hyperpolarized. After subtraction of these averaged images, the resulting difference image shows only the membrane potential of the cell which was altered periodically. The success of the method is demonstrated on leech cells in intact ganglia. If applied to cells with a basically two-dimensional arborization pattern, the decrease of activity in the difference image in areas further away from the injection site should relate to a decrease in membrane potential according to the passive electrotonic properties of the cell under study.

Periodic current oscillations observed in organic MIM junctions

2010 ◽  
Vol 45 (18) ◽  
pp. 4986-4989
Author(s):  
M. P. Dos Santos ◽  
T. S. Bonfim ◽  
J. G. Guimarães ◽  
A. M. Ceschin
Keyword(s):  
Current Oscillations ◽  
Periodic Current
Sign in / Sign up

Export Citation Format

Share Document