AUG 20, 2019 10:29 AM PDT

Building Atomically Thin Protection from Excessive Heat in Electronic Devices

WRITTEN BY: Nouran Amin

Smartphones and laptops start to heat when in use which can often be discomforting to users. Excess heat is also known to lead to malfunctions and even cause lithium batteries to explode. Often times glass, plastic, and layers of insulation are used to prevent heat-generating components of electronic devices from causing damage. Now, researchers at Stanford University have illustrated that a few layers of atoms can provide the same quality of insulation as 100 thick sheets of glass—these studies may someday provide the basis for engineering more compact electronics than what we have today.

"We're looking at the heat in electronic devices in an entirely new way," says Eric Pop, professor of electrical engineering and senior author of the study which was published in Science Advances.

Believe it or not, the heat felt from cellular usage or working on your laptop is actually an inaudible form of high-frequency sound. This is because the flowing electricity allows a stream of electrons to collide with the atoms causing a vibration. The continuous vibration generates energy that is felt as heat.

It is long known that studios for music are quiet from the construction of thick glass windows that block exterior sound—this principle inspired the study in generating better shielding on electronic devices. "We adapted that idea by creating an insulator that used several layers of atomically thin materials instead of a thick mass of glass," stated postdoctoral scholar Sam Vaziri, the lead author on the paper.

Stanford University: This greatly magnified image shows four layers of atomically thin materials that form a heat-shield just two to three nanometers thick, or roughly 50,000 times thinner than a sheet of paper. (Image credit: National Institute of Standards and Technology)

Specifically, researchers used a layer of graphene along with three other sheet-like materials to create a four-layered insulator that is just 10 atoms deep. The idea of developing atomically thin materials is a fairly a new concept. Roughly, 15 years ago scientists for the first time isolated some materials into such thin layers—one such example is graphene which is a single layer of carbon atoms that has inspired new applications in recent years.

The developed insulator is effective enough because the atomic heat vibrations are dampened and thus lose most of the energy as they pass through every layer. "As engineers, we know quite a lot about how to control electricity, and we're getting better with light, but we're just starting to understand how to manipulate the high-frequency sound that manifests itself as heat at the atomic scale," Pop said.

Source: Science Daily

About the Author
  • Nouran earned her BS and MS in Biology at IUPUI and currently shares her love of science by teaching. She enjoys writing on various topics as well including science & medicine, global health, and conservation biology. She hopes through her writing she can make science more engaging and communicable to the general public.
You May Also Like
JUN 14, 2020
Space & Astronomy
SpaceX Launches First Rideshare Mission with Great Success
JUN 14, 2020
SpaceX Launches First Rideshare Mission with Great Success
If you’ve been following SpaceX, then you’d know that the commercial space company has been launching quite ...
JUL 27, 2020
Technology
Creating Realistic Computer Graphics
JUL 27, 2020
Creating Realistic Computer Graphics
Creating realistic computer graphics for video games, extended reality, and scientific visualization tools have remained ...
AUG 07, 2020
Technology
Origami Microbots
AUG 07, 2020
Origami Microbots
Using the principles of origami can unlock the power of tiny robots, enhance speed, and control in machinery.  &quo ...
AUG 25, 2020
Technology
Real-Time Robots
AUG 25, 2020
Real-Time Robots
Robots that can detect real-time change? U.S. Army scientists demonstrate the world’s first human-robot team that ...
SEP 17, 2020
Technology
Advancing Memory in AI Neural Networks
SEP 17, 2020
Advancing Memory in AI Neural Networks
Improving The Memory of Neural Networks via Artificial intelligence (AI) Using the human brain as inspiration, researche ...
OCT 17, 2020
Technology
Improving Internet Connectivity in Developing Nations
OCT 17, 2020
Improving Internet Connectivity in Developing Nations
Secure and reliable internet connectivity is the oxygen of modern day global research. In developing nations, there pers ...
Loading Comments...