Entries with tag nanyang technological university.

Researchers Create Ultrafast Memory Device

Nanyang Technological University and University of California, Berkeley, researchers have constructed a prototype ultrafast, energy-efficient ferroelectric memory device able to use light to read data. Three types of memory chips are commonly available: RAM, ROM, and DRAM, each of which has limitations. Recent research on addressing these limitations has focused on developing an energy-efficient device that is faster and more accurate than RAM. The leading candidate is ferroelectric RAM, which is made with bismuth ferrite and uses magnetic polarization to represent the ones and zeros of binary data. The newly developed FRAM chip uses halogen light to read the polarization.  Shining a light on the material does not disturb its polarization. This would eliminate errors, specifically the erasing of data, that can occur when devices use electricity to read polarization. The researchers claim their device is about 10,000 times faster than DRAM and operates on only 3 volts of electricity, compared to DRAM’s average 15 volts. The next steps toward commercializing the technology include making it smaller. The researchers published their work in the journal Nature Communications. (PhysOrg)(Nature Communications)

Researchers Create Laser-Based Cooling

Scientists from Nanyang Technological University developed a method for laser cooling of semiconductors. They investigated using a pump laser and its effect on cadmium sulfide nanoribbon. The researchers cooled the semiconductor from 62 degrees Fahrenheit to -9 degrees by focusing a green laser on it and making it fluoresce. It lost energy as light. The technology might eventually be used in infrared cameras on satellites and night vision goggles. They are investigating whether the laser-cooling method can reach much lower temperatures on a par with liquid helium. The researchers published their work in the journal Nature. (SlashDot)(Txchnologist)(Nature)

Showing 2 results.