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Texas Professor Develops Longer Lasting Smartphone Battery! ! The growing concern with smartphones has always been the length of battery life. As 
expectations regarding the size of products have continued to demand smaller phones, building 
a small, yet capable battery has become increasingly difficult. Consumers rely on phones 
heavily, demanding that they can be used for several hours at a very heavy rate and still retain 
some form of battery life. As a result, researchers from the Erik Jonsson School of Engineering 
and Computer Science located at The University of Texas at Dallas have been working on 
meeting this very need, according to an article recently completed by Phys.org.! 
! 
To achieve this, the notion of steep 
devices must be mastered. Steep devices 
use less voltage while still outputting a 
strong signal; as a result, a powerful 
mobile device can be created—one that 
can complete many functions while 
operating quickly and without use of a lot 
of battery power. To achieve the steep 
device, the unique and subtle behavior of 
a single electron must be tapped, which 
allows for energy efficient transmitting of 
signals. Previously, engineers and 
scientists have used cooling techniques to 
compensate for the thermal energy in the 
electron environment.! ! 
However, Dr. Jiyoung Kim, professor of 
materials science and engineering in the 
Jonsson School and an author of the 
paper and Dr. Kyeongjae “K.J.” Cho, 
professor of materials science and 
engineering and physics and another 
author of the paper, created a filter that 
allows this process to transmit much more 
smoothly. Cho and Kim added a specific, 
atomic thin film layer to the transistor; this 
layer acts as a filter for energy that passes 
through at room temperature, resulting in 
a signal that is six to seven times steeper 
than that which is found in traditional 
devices. This allows for steep devices that 
use less voltage but still creates a strong 
signal.! ! For more mobile and smartphone news, 
visit Itai Kathein’s Facebook page, and 
follow Itai on Twitter, @itaikathein.

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Texas Professor Develops Longer Lasting Smartphone Battery

  • 1. Texas Professor Develops Longer Lasting Smartphone Battery! ! The growing concern with smartphones has always been the length of battery life. As expectations regarding the size of products have continued to demand smaller phones, building a small, yet capable battery has become increasingly difficult. Consumers rely on phones heavily, demanding that they can be used for several hours at a very heavy rate and still retain some form of battery life. As a result, researchers from the Erik Jonsson School of Engineering and Computer Science located at The University of Texas at Dallas have been working on meeting this very need, according to an article recently completed by Phys.org.! ! To achieve this, the notion of steep devices must be mastered. Steep devices use less voltage while still outputting a strong signal; as a result, a powerful mobile device can be created—one that can complete many functions while operating quickly and without use of a lot of battery power. To achieve the steep device, the unique and subtle behavior of a single electron must be tapped, which allows for energy efficient transmitting of signals. Previously, engineers and scientists have used cooling techniques to compensate for the thermal energy in the electron environment.! ! However, Dr. Jiyoung Kim, professor of materials science and engineering in the Jonsson School and an author of the paper and Dr. Kyeongjae “K.J.” Cho, professor of materials science and engineering and physics and another author of the paper, created a filter that allows this process to transmit much more smoothly. Cho and Kim added a specific, atomic thin film layer to the transistor; this layer acts as a filter for energy that passes through at room temperature, resulting in a signal that is six to seven times steeper than that which is found in traditional devices. This allows for steep devices that use less voltage but still creates a strong signal.! ! For more mobile and smartphone news, visit Itai Kathein’s Facebook page, and follow Itai on Twitter, @itaikathein.