"Light can carry more data than a wire, and it takes less energy to transmit photons than electrons,"

Light is much more efficient at transmitting datathan electricity can through wires, but getting itto work reliably in a computer has beensomewhat problematic. A team of engineershave just announced a new “optical link” devicemade out of silicon that is able to bend light atright angles, which is an important advancementtoward replacing electric wires in computerswith optics .

Wearable health-monitoring

devices represent an exciting

opportunity in healthcare.

Armed with tools to track their

own conditions, patients could

be empowered to take

responsibility for their own

health. And rather than getting

small glimpses during

infrequent checkups,

physicians could be provided

with a steady stream of data

about how their patients are

doing.

Wireless power transfer or wireless energy transmission is

the transmission of electrical power from a power source to

a consuming device without using solid wires or

conductors. It is a generic term that refers to a number of

different power transmission technologies that use time-

varying electromagnetic fields. Wireless transmission is

useful to power electrical devices in cases where

interconnecting wires are inconvenient, hazardous, or are

not possible. In wireless power transfer, a transmitter

device connected to a power source, such as the mains

power line, transmits power by electromagnetic fields

across an intervening space to one or more receiver

devices, where it is converted back to electric power and

utilized.