Entries with tag northwestern university.

Server Farms Can be More Sustainable

New research claims server farms can be made more sustainable through a combination of using clean energy, modern equipment and locating data farms in cooler climates. The report -- by Stanford University, Northwestern University and the Lawrence Berkeley National Laboratory researchers – claims these moves could make these facilities
88 percent more sustainable. Using current IT equipment alone, could reduce server farm greenhouse gas emissions by 80 percent, according to the researchers. Another 8 percent reduction could be possible if these facilities were in cooler locations, requiring less energy. Another significant problem, according to the study, are so-called zombie servers, hardware that stays on and uses energy, but is not being used for computational tasks. The findings were published earlier this summer in the journal Nature Climate Change. (The Guardian)(Nature Climate Change)

Stretchable Lithium-Ion Battery Demonstrated

US researchers have demonstrated a flexible, stretchable lithium-ion battery that can be recharged wirelessly, enabling its use in numerous applications needing flexible electronic components. Developed by Yonggang Huang, professor of civil and environmental engineering and mechanical engineering from Northwestern University and John A. Rogers, professor of materials science and engineering as well as chemistry at University of Illinois, the battery could power stretchable electronic devices such as implantable medical devices. They have demonstrated the battery powering an LED and continuing to work even when contorted in different ways. It is reportedly capable of stretching by up to 300 percent of its original size while continuing to function. The battery’s life is between eight and nine hours. The researchers plan to publish their work in Nature Communications.  (PhysOrg)(Northwestern University @ EurekAlert)

Researchers Develop Stretchy Electronic Material

An international research team has developed a material that can be used to create electronics capable of stretching to more than double their original size. Scientists from Northwestern University’s McCormick School of Engineering, the Korea Advanced Institute of Science and Technology, Dalian University of Technology in China, and the University of Illinois at Urbana-Champaign created the new material by combining a porous polymer (porous polydimethylsiloxane) and a liquid metal (eutectic gallium-indium). This combination lets electricity flow consistently through the device, even when it is being stretched. Loss of conductivity is a common problem with existing stretchable electronics. The researchers said the new material is four times stretchier than conventional elastic electronics materials. They noted that healthcare and other applications could use stretchy devices. They published their research in Nature Communications. (EurekAlert)(Northwestern University)(Nature Communications)

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