Tag Archives | Graphene
Blue LED Breakthrough for Efficient Electronics

Blue LED Breakthrough for Efficient Electronics

In a step that could lead to longer battery life in smartphones and lower power consumption for large-screen televisions, researchers at the University of Michigan have extended the lifetime of blue organic light emitting diodes by a factor of 10.   Blue OLEDs are one of a trio of colors used in OLED displays such [...]

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Future Flexible Electronics Based on Carbon Nanotubes

Future Flexible Electronics Based on Carbon Nanotubes

Researchers from the University of Texas at Austin and Northwestern University have demonstrated a new method to improve the reliability and performance of transistors and circuits based on carbon nanotubes (CNT), a semiconductor material that has long been considered by scientists as one of the most promising successors to silicon for smaller, faster and cheaper [...]

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Graphene: When a Doughnut Becomes an Apple

Graphene: When a Doughnut Becomes an Apple

In experiments using the wonder material graphene, ETH researchers have been able to demonstrate a phenomenon predicted by a Russian physicist more than 50 years ago. They analysed a layer structure that experts believe may hold unimagined promise.   Anastasia Varlet works as a doctoral candidate in the research group headed by ETH Professor Klaus [...]

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Moving Silicon Atoms in Graphene

Moving Silicon Atoms in Graphene

Richard Feynman famously posed the question in 1959: is it possible to see and manipulate individual atoms in materials? For a time his vision seemed more science fiction than science, but starting with groundbreaking experiments in the late 1980s and more recent developments in electron microscopy instrumentation it has become scientific reality. However, damage caused [...]

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First Graphene-Based Flexible Display

First Graphene-Based Flexible Display

A flexible display incorporating graphene in its pixels’ electronics has been successfully demonstrated by the Cambridge Graphene Centre and Plastic Logic, the first time graphene has been used in a transistor-based flexible device.   The partnership between the two organisations combines the graphene expertise of the Cambridge Graphene Centre (CGC), with the transistor and display [...]

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Atomically Thin Material Opens Door for Integrated Nanophotonic Circuits

Atomically Thin Material Opens Door for Integrated Nanophotonic Circuits

A new combination of materials can efficiently guide electricity and light along the same tiny wire, a finding that could be a step towards building computer chips capable of transporting digital information at the speed of light.   Reporting today in The Optical Society’s (OSA) journal Optica, optical and material scientists at the University of [...]

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A Transistor-Like Amplifier for Single Photons

A Transistor-Like Amplifier for Single Photons

Data transmission over long distances usually utilizes optical techniques via glass fibres — this ensures high speed transmission combined with low power dissipation of the signal. For quite some years possibilities have been explored how to go one step further and perform all-optical data processing, with optical transistors and optical logic gates. In particular in [...]

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Move Over, Silicon: A New Circuit in Town

Move Over, Silicon: A New Circuit in Town

When it comes to electronics, silicon will now have to share the spotlight. In a paper recently published in Nature Communications, researchers from the USC Viterbi School of Engineering describe how they have overcome a major issue in carbon nanotube technology by developing a flexible, energy-efficient hybrid circuit combining carbon nanotube thin film transistors with [...]

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Charging Portable Electronics in 10 Minutes

Charging Portable Electronics in 10 Minutes

Researchers at the University of California, Riverside Bourns College of Engineering have developed a three-dimensional, silicon-decorated, cone-shaped carbon-nanotube cluster architecture for lithium ion battery anodes that could enable charging of portable electronics in 10 minutes, instead of hours.   Lithium ion batteries are the rechargeable battery of choice for portable electronic devices and electric vehicles. [...]

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Playing Pool With Carbon Atoms

Playing Pool With Carbon Atoms

A University of Arizona-led team of physicists has discovered how to change the crystal structure of graphene, more commonly known as pencil ‘lead’, with an electric field, an important step toward the possible use of graphene in microprocessors that would be smaller and faster than current, silicon-based technology.   Graphene consists of extremely thin sheets [...]

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