Category Chemistry/Nanotechnology

Understanding of Relaxor Ferroelectric Properties could lead to many Advances

molecular model of polymer orange and blue balls
Chiral (mirror) molecules give relaxor ferroelectrics their amazing properties.
IMAGE: MRI, Penn State

A new fundamental understanding of polymeric relaxor ferroelectric behavior could lead to advances in flexible electronics, actuators and transducers, energy storage, piezoelectric sensors and electrocaloric cooling, according to a team of researchers at Penn State and North Carolina State.

Researchers have debated the theory behind the mechanism of relaxor ferroelectrics for more than 50 years, said Qing Wang, professor of materials science and engineering at Penn State. While relaxor ferroelectrics are well-recognized, fundamentally fascinating and technologically useful materials, a Nature article commented in 2006 that they were heterogeneous, hopeless messes.

Without a funda...

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Chemistry paves the way for Improved Electronic Materials

A thin layer of indium nitride on silicon carbide
A thin layer of indium nitride on silicon carbide, created using the molecule developed by researchers at Linköping University, Sweden. (Image: Magnus Johansson/Linköping University)

Indium nitride is a promising material for use in electronics, but difficult to manufacture. Scientists at Linköping University, Sweden, have developed a new molecule that can be used to create high-quality indium nitride, making it possible to use it in, for example, high-frequency electronics.

The bandwidth we currently use for wireless data transfer will soon be full. If we are to continue transmitting ever-increasing amounts of data, the available bandwidth must be increased by bringing further frequencies into use. Indium nitride may be part of the solution.
“Since electrons move through indium n...

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Amorphous Boron Nitride shows excellent Insulating Properties for Next Generation of Electronics

a) Remote ICP-CVD system with borazine mass flow controller (MFC) for precise control of borazine flow. The a-BN films were grown on Si substrates at 400 °C. Credit: UNIST, SAIT, University of Cambridge, Catalan Institute of Nanoscience and Nanotechnology
b) Side view of images of a -BN sample grown on a Si substrate at T= 673K. Atomic species are shown in different colours: Si (yellow), Blue (N), Pink 3 (B). Credit: UNIST, SAIT, University of Cambridge, Catalan Institute of Nanoscience and Nanotechnology

In the ongoing process of miniaturization of logic and memory devices in electronic circuits, reducing the dimensions of interconnects—metal wires that link different components on a chip—is crucial to guarantee fast response of the device and improve its performance...

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New Battery Electrolyte may boost the performance of Electric Vehicles

A conventional (clear) electrolyte on the left and the novel Stanford electrolyte of the right. (Image credit: Zhiao Yu)

A new lithium-based electrolyte invented by Stanford University scientists could pave the way for the next generation of battery-powered electric vehicles.

In a study published June 22 in Nature Energy, Stanford researchers demonstrate how their novel electrolyte design boosts the performance of lithium metal batteries, a promising technology for powering electric vehicles, laptops and other devices.

“Most electric cars run on lithium-ion batteries, which are rapidly approaching their theoretical limit on energy density,” said study co-author Yi Cui, professor of materials science and engineering and of photon science at the SLAC National Accelerator Laboratory...

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