Sentences with phrase «electrons flowing from»

«In this tunnel junction, holes from the silicon solar cell recombine with electrons flowing from the perovskite solar cell using quantum mechanical tunneling,» said Jonathan Mailoa, a graduate student at MIT and co-author of the report, in an email.

Electrons flow from the anode to the cathode to generate electricity.

A, Micro - compartment for linear PET (solid arrows): electrons flow from photosystem II (PSII), through plastoqui - none (PQ) and the cytochrome b6f (Cytb6f) complex to PSI, where they are donated to Fd and used by FNR to reduce NADP +.

``...» In a positive - to - ground lightning strike, positive charges first rush from the cloud to the ground, creating a lightning channel through which electrons flow from the ground back up to the cloud.

Not exact matches

While electrons, with their negative charge, flow from one pole of the battery to the other (thus providing power for devices), positive ions flow the other way, through an electrolyte, or ion conductor, sandwiched between those poles, to complete the flow.

The satellite, which swoops on an egg - shaped orbit to within 350 kilometers of Earth's surface, detected electrical impulses from electrons coursing upward within charged sheets that shadow the downward flowing auroral electrons.

In a typical copper wire, most electrons would bounce back from such an obstruction and the rest would get absorbed, impeding the flow.

At the same time, electrons flow outside the battery through an electric load from the cathode to the anode.

From a carbon nanotube, Dutch researchers have crafted a transistor that toggles on and off with the flow of a single electron.

They also found that lanthanum and arsenic atoms separated platinum layers from each other in a way, they speculate, which weakens the interaction between platinum electrons, allowing them to flow more freely and resulting in the superconducting property.

A tiny current flows nevertheless, as there is a slight probability that electrons «tunnel» from the pointed tip into the sample.

Of course, freeing electrons in a copper - oxide insulator to get superconducting current flowing for useful applications won't be quite as easy as melting ice to get liquid water or removing pieces from a chessboard.

In the current study, the researchers theorize that the laws of physics prohibit current from flowing in the crystal's bulk and top and bottom surfaces, but permit electron flow in completely different ways on the side surfaces through the hourglass - shaped channels.

Batteries are handy because their electrons flow through an electrode (that nub at the top of a dry - cell battery) and from there are easily channeled into MP3 players, flashlights, toys, smoke detectors, and so on.

In 2011, the Hasan group detected this fast electron - flow in the interior of a material made from combining several elements — bismuth, thallium, sulfur and selenium.

The first paper, published May 7, demonstrates that fast electrons can flow in the interior of crystals made from cadmium and arsenic, or cadmium arsenide.

Because electrons scatter polarized light more than non-polarized light, that observation will give the scientists a bead on what the electrons are doing, and by extension, what the solar wind is doing — how fast it flows, how hot it is and even where it comes from.

Once the excited electrons absorb enough energy to jump free from the silicon atoms, they can flow independently through the material to produce electricity.

The heat on one side springs electrons from the atoms they are normally part of, and they flow to the cooler side, leaving the hot side positively charged and making the cold side negative.

From there, they flow to the platinum cathode, which needs electrons to carry out its own electrochemical reactions.

As photons of light pass into the semiconductor regions of the solar cells, they knock off electrons from the atoms, allowing electricity to flow freely, creating a current.

The flow of electrons from one layer to the other can then be harnessed to do work as the cell is discharged, in the same way that a normal battery works.

They visualized interference fringes and the pattern of flow of electron waves from a quantum point contact, made an imaging electron wave interferometer, and imaged magnetic focusing in GaAs / AlGaAs, and they have imaged the electron cyclotron orbit in graphene / hBN structures.

This behavior of helium is of great interest because electrons in a superconductor also behave as a superfluid, flowing without resistance from the atoms in the conductor.

As the bacteria eat, they release electrons that flow from an electrode buried in the sediment to one closer to the surface, generating electricity.

First, the control voltage mediates how electrons pass through a boundary that can flip from an ohmic (current flows in both directions) to a Schottky (current flows one way) contact and back.

In a solar cell, the first step is for the energy of the light to knock electrons loose from the solar - cell material (usually silicon); then, those electrons need to be funneled toward a collector, from which they can form a current that flows to charge a battery or power a device.

As the electrons travel from the anode to the cathode, silver ions are drawn from the anode and thus deposited into the body along the lines of current flow.

For example, students could be building a speaker from scratch (in which amplified electrical signals are converted into magnetic fields) and the system would display the flow of electrons, magnetic forces or sensor values.

Only when electrons are cheap and free flowing, can the human mind turn from subsistence to imaginative plans, hopes and dreams for a future.

George, if you do not know from the context that we are talking about net heat flow through the wire, and not freakin» brownian movement of electrons, you are not paying enough attention.

Willis Eschenbach says: January 24, 2012 at 7:07 pm George Turner says: January 24, 2012 at 2:40 pm George, if you do not know from the context that we are talking about net heat flow through the wire, and not freakin» brownian movement of electrons, you are not paying enough attention.

As I mentioned above, this is not hard to understand if you look at heat transport as a diffusion phenomenon, i.e., as flow in accordance with the laws of probability from a region characterized by a higher concentration (of fast molecules or fast electrons) to one with a lower concentration.