Devices are being built that can manipulate phonons , allowing them to flow in one direction only , for example - the thermal equivalent of a diode .
可以操作声子并只让它们向一个方向流动的设备正在被建造,这是二极管的热等价物。
Dr lacour 's stretchable electronic skin can be made using the same processes used to produce organic light-emitting diode ( oled ) displays , which are found in many mobile phones .
The prototype they 're developing includes a solar cell , a light-emitting diode , an ultracapacitor and a layer of glass that vehicles would actually drive on , according to this article in scientific american .
Each diode stimulates the nerve cells that have their endings in the retina-unlike the photoreceptors , these cells are unharmed by retinitis pigmentosa-and the nerve cells in question then relay their individual signals to the brain via the optic nerve .
Normally the probe remains colourless , but when cleaved , it releases a green fluorescent product that can be detected using a homemade box containing a light-emitting diode and a couple of filters .
Kearns tried to get an explanation from ford but he soon discovered that " there 's a diode in the line when you talk to ford-the information only goes one way . "
A university of washington research team , led by electrical engineering professor babak parviz , has developed a prototype lens fitted with a tiny radio ( for receiving data ) and a light-emitting diode , or led ( for displaying data to its wearer ) .
In ghana and kenya , the world bank is financing a project called lighting africa to make light-emitting diode ( led ) lanterns available in rural areas that are not connected to the electricity grid , providing an affordable , non-polluting alternative to kerosene lamps .