graphene – The InfoGreenGlobal

Terahertz waves as future energy source

Adrian — Mon, 20 Apr 2020 22:10:29 +0000

It is already known in scientific environments that each device emits besides Wi-Fi signals, some terahertz waves. They are electromagnetic waves with a high frequency in-between microwaves and infrared light, being called “Terahertz rays”. Very interesting to notice that any object that register a temperature, even our bodies are producing Terahertz rays. Terahertz waves are […]

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Cleaning objects at nanoscale

Adrian — Fri, 17 Apr 2020 22:47:42 +0000

When I thought I saw all in the field of cleaning, I found out that a team of German scientists at FAU – Friedrich-Alexander University from Nürnberg, Germany have completed a new method for mechanical cleaning of surfaces at nanoscale. Their technique removes even the tiniest contaminants down to the atomic scale, performing a cleaning […]

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Stanford scientists spark new interest in the century-old Edison battery

Gabriel — Tue, 26 Jun 2012 19:38:53 +0000

Stanford University scientists have breathed new life into the nickel-iron battery, a rechargeable technology developed by Thomas Edison more than a century ago. Designed in the early 1900s to power electric vehicles, the Edison battery largely went out of favor in the mid-1970s. Today only a handful of companies manufacture nickel-iron batteries, primarily to store […]

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Bringing down the cost of fuel cells

Gabriel — Sat, 23 Jun 2012 11:35:16 +0000

Engineers at the University of Wisconsin-Milwaukee (UWM) have identified a catalyst that provides the same level of efficiency in microbial fuel cells (MFCs) as the currently used platinum catalyst, but at 5% of the cost. Since more than 60% of the investment in making microbial fuel cells is the cost of platinum, the discovery may […]

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Nanocable could be big boon for energy storage

Gabriel — Thu, 07 Jun 2012 19:37:56 +0000

Thanks to a little serendipity, researchers at Rice University have created a tiny coaxial cable that is about a thousand times smaller than a human hair and has higher capacitance than previously reported microcapacitors. The nanocable, which is described this week in Nature Communications, was produced with techniques pioneered in the nascent graphene research field […]

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Unzipped carbon nanotubes could help energize fuel cells and batteries

Gabriel — Tue, 29 May 2012 17:28:22 +0000

Multi-walled carbon nanotubes riddled with defects and impurities on the outside could replace some of the expensive platinum catalysts used in fuel cells and metal-air batteries, according to scientists at Stanford University. Their findings are published in the May 27 online edition of the journal Nature Nanotechnology. “Platinum is very expensive and thus impractical for […]

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Student’s research may help increase solar cell efficiency

Gabriel — Sat, 14 Apr 2012 19:22:31 +0000

Stephen Mulligan, a University of Delaware senior studying mechanical engineering, has co-authored a paper explaining the effects of gas flow on newly developed solar cells. The paper, entitled “Hybrid Effect of Gas Flow and Light Excitation in Carbon/Silicon Schottky Solar Cells,” appeared recently in the Journal of Materials Chemistry. Written during Mulligan’s two-month student exchange […]

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The piezoelectric effect in graphene at nanoscale

Gabriel — Sat, 17 Mar 2012 19:16:00 +0000

By depositing atoms on one side of a grid of the “miracle material” graphene, researchers at Stanford have engineered piezoelectricity into a nanoscale material for the first time. The implications could yield dramatic degree of control in nanotechnology. In what became known as the ‘Scotch tape technique,” researchers first extracted graphene with a piece of […]

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Researchers begin graphene production

Gabriel — Sat, 17 Mar 2012 19:00:33 +0000

A group of researchers at Linköping University are now marketing their method of producing graphene. There is great interest in the Nobel Prize-winning material, which is suitable for things such as high-frequency electronics. Graphene manufactured at Linköping leads the world in quality, and researchers have been supplying other research teams with material for several years. […]

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Stay super-dry with Nokia’s nanotechnology

Gabriel — Thu, 08 Mar 2012 20:09:35 +0000

What happens when a drop of water falls on a lotus leaf? It’s not a philosophical question, but a natural phenomenon scientists have been studying, and trying to make sense of, for hundreds of years. The drop of water falls, bounces, and rolls away without trace – leaving the leaf clean and water repellant. Now scientists […]

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