This layer of organic semiconductor is situated between two electrodes typically, at least one of these electrodes is transparent.

First of all, these electrodes are noninvasive.

But look at all the electrodes around it.

I have never understood correctly what electrodes are.

We copy this in the lab by outfitting cell culture systems with electrodes.

Now, this is Dr. Lene Harbott applying electrodes to the head of John Morton.

In the 1950s, Olds and Milner put electrodes into the brain of a rat.

These electrodes act like mini pacemakers to get the cells to contract in the lab.

It's fitted with solid electrodes and an electrolyte that's a solution of salt and water.

And the current passing between the electrodes generates enough heat to keep it at temperature.

Fish Lake was a massive lake filled with mines, underwater barbed wire, electrodes, and various sensors.

And we can use electrodes or antennae to pick that up and tell the arm to move.

I made the battery all liquid liquid metals for both electrodes and a molten salt for the electrolyte.

Two players who are being scanned using EEG electrodes are going to bargain over one to six dollars.

This electrode here, called the gate, controls the flow of current from the source to the drain these two electrodes.

You can see the movements on his chest, and those little hash marks are where we put our antennae, or electrodes.

Galvani's approach of probing the nervous system with electrodes has remained state of the art until today, despite a number of drawbacks.

And that's fortunate, because we can put two electrodes on your palm and measure the change in skin resistance produced by sweating.

In 1808 Davy observed that electric current sent through a solution of borates produced a brown precipitate on one of the electrodes.

In some types the sides of the baton can be electrified to stop the subject from grasping the baton above the electrodes.

She's putting electrodes on his head so that we can monitor the electrical activity in John's brain as he races around the track.

Again, it's got technology it's got electrodes going into its left and right hemispheres it's got a camera on top of its head.

Before an electric field is applied, the orientation of the liquid crystal molecules is determined by the alignment at the surfaces of electrodes.

Now you've seen before that with electrodes you can control robotic arms, that brain imaging and scanners can show you the insides of brains.

Electric arc With ample current density and ionization, this forms a luminous electric arc (a continuous electric discharge similar to lightning) between the electrodes.

The nickel cadmium battery (NiCd battery or NiCad battery) is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes.

You're supposed to put a bunch of these things on there, but our little motor's making all kinds of noise right next to my electrodes.

Initially he experimented with individual cells in series, each cell being a wine goblet filled with brine into which the two dissimilar electrodes were dipped.

Now, clearly we're not going to put a couple of electrodes on his head and understand exactly what all of his thoughts are on the track.

Every time you contract a muscle, it emits a little electricity that you can record with antennae or electrodes and use that to operate the motorized prosthesis.

A technician will put the electrodes onto the scalp using a conductive gel or paste and usually after a procedure of preparing the scalp by light abrasion.

Using a grid the size of your thumb, with 32 electrodes on the surface of his brain, Tim uses his thoughts to control an advanced prosthetic arm.

This is the starting point for designing a battery two electrodes, in this case metals of different composition, and an electrolyte, in this case salt dissolved in water.

Electrocardiography (ECG or EKG from ) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body.

And what they've done here is they've put electrodes in its ganglia and its brain and then a transmitter on top, and it's on a big computer tracking ball.

500 C) which can produce, under the right conditions, valuable needle coke, a highly crystalline petroleum coke used in the production of electrodes for the steel and aluminium industries.

Today I'll talk about a different approach, which is to put electrodes in different parts of the brain, and actually record the activity of individual nerve cells in the brain.

Low pressure discharges Glow discharge plasmas non thermal plasmas generated by the application of DC or low frequency RF ( 100 kHz) electric field to the gap between two metal electrodes.

And what we tried with the pig was external electrodes on the skin, like you see in an emergency room, and I'm going to show you why they don't work very well.

Most auditing requires an E meter, a device that measures minute changes in electrical resistance through the body when a person holds electrodes (metal cans ), and a small current is passed through them.

Electrical and electronics In the later years of the 20th century, owing to its high electrode potential, lithium became an important component of the electrolyte and of one of the electrodes in batteries.

Because of its conductive properties and relative chemical inertness, tungsten is also used in electrodes, and in the emitter tips in electron beam instruments that use field emission guns, such as electron microscopes.

In a twisted nematic device (still the most common liquid crystal device), the surface alignment directions at the two electrodes are perpendicular to each other, and so the molecules arrange themselves in a helical structure, or twist.

Kerr electro optic effect The Kerr electro optic effect, or DC Kerr effect, is the special case in which a slowly varying external electric field is applied by, for instance, a voltage on electrodes across the sample material.

Competing half reactions in solution electrolysis Using a cell containing inert platinum electrodes, electrolysis of aqueous solutions of some salts leads to reduction of the cations (e.g., metal deposition with, e.g., zinc salts) and oxidation of the anions (e.g.