Hexagonal boron nitride tagged posts

Thermal Cloak Passively keeps Electric Vehicles Cool in the Summer and Warm in the Winter


•Scalable, passive, all-season temperature regulation through photon recycling
•Daytime sub-ambient passive cooling by 8.0°C in summer
•Nighttime supra-ambient passive warming by 6.8°C in winter
•Fire retardant, reliable in thermal, cryogenic, vibration, and corrosive environments

When an electric vehicle is parked outside, its temperature can swing wildly from day to night and season to season, which can lead to deterioration of the battery. To dampen these fluctuations and extend the battery’s lifespan, researchers have designed an all-season thermal cloak that can cool an electric vehicle by 8°C on a hot day and warm it by 6.8°C at night...

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Researchers quickly harvest 2D materials, bringing them closer to commercialization

Researchers in MIT’s Department of Mechanical Engineering have developed a technique to harvest 2-inch diameter wafers of 2-D material within just a few minutes. Credit: Peng Lin

Researchers in MIT’s Department of Mechanical Engineering have developed a technique to harvest 2-inch diameter wafers of 2-D material within just a few minutes.
Credit: Peng Lin

Efficient method for making single-atom-thick, wafer-scale materials opens up opportunities in flexible electronics. Researchers have developed a technique to harvest 2-inch diameter wafers of 2-D material within just a few minutes. They can then be stacked together to form an electronic device within an hour.

Since the 2003 discovery of graphene, there has been significant interest in other types of 2-D materials as well. These materials could be stacked together like Lego bricks to form a range of devices with different functions, including operating as semiconductors...

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‘Rubber material’ discovered that could lead to Scratch-Proof Paint for Car

 Mechanical properties of atomically thin boron nitride and the role of interlayer interactions. Nature Communications, 2017; 8: 15815 DOI: 10.1038/ncomms15815

Mechanical properties of atomically thin boron nitride and the role of interlayer interactions. Nature Communications, 2017; 8: 15815 DOI: 10.1038/ncomms15815

A stretchy miracle material has been discovered that could be used to create highly resistant smart devices and scratch-proof paint for cars. Led by Dr Elton Santos from the University’s School of Mathematics and Physics, an international team have found superlubricity in a few layers of graphene – a concept where friction vanishes or very nearly vanishes. They also found that a few layers of hexagonal boron nitride (h-BN) are as strong as diamond but are more flexible, cheaper and lighter...

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New Era of Electronics and Quantum devices could be ushered in with virtually perfect single layer of “white graphene”

 

The material, technically known as hexagonal boron nitride, features better transparency than its sister, graphene, is chemically inert, or non-reactive, and atomically smooth. It also features high mechanical strength and thermal conductivity. Unlike graphene, however, it is an insulator instead of a conductor of electricity, making it useful as a substrate and the foundation for the electronics in cell phones, laptops, tablets and many other devices.

Growth and transfer of 2-D material such as hexagonal boron nitride and graphene was performed by a team that included Yijing Stehle of Oak Ridge National Laboratory. Credit: ORNL

Growth and transfer of 2-D material such as hexagonal boron nitride and graphene was performed by a team that included Yijing Stehle of Oak Ridge National Laboratory. Credit: ORNL

“Imagine batteries, capacitors, solar cells, video screens and fuel cells as thin as a piece of paper,” said ORNL’s Yijing Stehle...

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