A simple structural tweak has dramatically enhanced the colour clarity and stability of heavy metal-free blue quantum dots.

It is a key concept in redox chemistry – the chemistry of reactions where one reaction partner loses electrons (oxidation) while the other gains electrons (reduction). Chemical energy conversion ...

Peanut butter and jelly. Simon and Garfunkel. Semiconductors and bacteria. Some combinations are more durable than others. In ...

J. Thomson’s discovery that atoms were not indivisible, but contained smaller, negatively charged entities called electrons — the first subatomic particles to be identified. Then, in 1911 ...

It said the quantum dot ones in TCL sets contain at lest four micrograms of cadmium per kilogram. Cadmium-selenide (CdSe) is a compound used to make quantum dots. The presence of CdSe in TCL TVs ...

Two twisted boron nitride layers (blue and pink) create a crystal lattice at a distance in which electrons (gold) can arrange themselves in a regular pattern. Credit: Natasha Kiper / ETH Zurich ...

Anode – Typically made of reactive materials like lithium or zinc, the anode undergoes oxidation, releasing electrons. Cathode – A material capable of accepting electrons, the cathode undergoes ...

such as cadmium selenide or indium phosphide. Being particularly small, their size and shape dictate the color of light they emit when powered, the result of the quantum behavior of their electrons.

In a paper published Jan. 22 in Nature, the team describes how electrons in devices made, in part, of the new material can become solid, or form crystals, by changing the voltage applied to the ...