Taking Laser Cooling to a New Low
The breakthrough of laser cooling technology may lead to the development of self-cooling computer chips.
Until 2013, the possibility of cooling semiconductors by laser had never been proven before. Scientists from NTU’s School of Physical and Mathematical Sciences and School of Electrical and Electronical Engineering clinched a first when they cooled a semiconductor from 20 degrees Celsius down to minus 20 degrees Celsius that year. The potential of laser cooling technology is vast. Possible applications in the future include self-cooling computer chips that would prolong battery life of portable devices such as smartphones. Compressors and coolants in air-conditioning could conceivably be done away with, replaced by a revolutionary cooling system using lasers.
- Does not emit greenhouse gases
- Compact and space-saving
- Slashes energy use
“If we are able to harness the power of laser cooling, it would mean that medical devices which require extreme cooling, such as MRI which uses liquid helium, could do away with their bulky refrigerant systems with just with an optical refrigeration device in its place"
Assistant Professor Xiong Qihua
from the School of Physical and Mathematical Sciences and the School of Electrical and Electronic Engineering.
The team is now looking to bring laser cooling down to liquid helium temperature at minus 269 degree Celsius. There is also potential development of self-cooling computer chips that prolong battery life for portable devices like tablets and smartphones. Your contribution can help bring about more energy-efficient buildings, alleviating the effect of global warming.
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