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Carpet of Boron Nanotubes Could Lead to New Generation of Nano-scale Electronics : CleanTechnica
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Like some tantalizing cursed treasure, boron nitride nanotubes have been tempting researchers with their promise of high heat tolerance, which makes them excellent candidates for components in the next generation of microscopic-scale high efficiency electronics. But for years the tiny nanofibers, which are similar to carbon nanotubes, have lead researchers down one blind alley after another.
The fact is that boron nanotubes are much harder to produce than carbon nanotubes. They won’t catch on until that obstacle is overcome - and it seems that a team of researchers at Michigan Technological University has done just that. Working with the same instrumentation used for carbon nanotubes, the team has developed a way to grow virtual “Persian carpets” of boron nitride nanotubes in the lab, paving the way for their commercial use.
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Tectonic Resources drills into Phillips River gold, copper, silver, zinc, lead
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Junior gold and base metals explorer Tectonic Resources NL (ASX: TTR) said first-phase drilling at its Harbour View site had confirmed gold between 25 g/t at four metres, to 3.4 g/t at two metres. Copper was found at 4.5 per cent at four metres,
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768 Fibre Optic Sub-sea Riser Cable Sets New World Record
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A riser cable containing 768 fibres, developed by Nexans Norway, is claimed to be a world record with regards to number of fibres. Because of the large number of fibres required it was necessary to develop a system optimised for installation efficiency and which minimised the time needed for optical measurements and tests during and after installation.
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Electric vehicle infrastructure powers ahead
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Electric vehicle infrastructure providers are powering ahead with $350 million in equity financing for battery-swap company Better Place and the launch of ECOtality’s electric vehicle charging software.
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Renewable energies you don’t hear about every day
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The Cleantech Group’s Stephen Marcus takes a look at less common clean energy generation technologies that don’t always make it to the front pages.
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Aluminium vs Copper - Mobile Electronics Australia
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Is Aluminium suitable for busbar applications?
I have access to a large variety of different aluminium alloy through a friend in the industry, and at extremely cheap prices. In the past i have used copper and brass with good results, but at the prices i can get aluminium i’ve been thinking maybe it’s worth making the move. I realise that in terms of 1:1 conductivity the alloy gets beaten hands down, but what if i am using double the thickness aluminium?
For example, in the past i have used 30×6mm flat copper, but i have been able to get 60×10mm or even 100×10mm flat aluminium for substantially less, and considering the amount of batteries and busbars we’re looking at using in the new car, i’m thinking the Aluminium could be much more cost-effective.
Thoughts/Ideas/Experiences?
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Survey Shows Concerns Over Copper Usage in Semiconductor Packaging
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Dr Dan Tracy, Director of Industry Research and Statistics at SEMI added:
“This survey shows that the much talked about switch from gold to copper wire
in the semiconductor industry is being considered for some new products.
However, there are still concerns over copper - both its reliability and its
potential limitations in advanced technologies and key industries such as the
automotive industry.”
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Chinalco is shifting its development focus to copper
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- Aluminum Corporation of China (Chinalco), the leader of the country’s aluminium industry, is shifting its development focus to copper, which has greater growth potential in China than aluminium, a senior executive said on Monday.
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METHOD FOR PRODUCING COPPER-CLAD ALUMINUM WIRE
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Fushi Copperweld Subsidiary Signs Definitive Agreement to Acquire Dalian Jinchuan Electric
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The acquisition of Dalian Jinchuan would mark the Company’s strategic expansion into the power cable industry, as well as the execution of its strategy of expanding its downstream processing capabilities through vertical integration. The acquisition would also allow the Company to expand into Northeastern China. The Dalian Jinchuan brand of low- and medium-voltage power cable is well known and respected among customers in Northeastern China and other industry participants. The proposed acquisition will allow the Company to access the growing power market through Dalian Jinchuan’s broad sales network, existing customer relationships, research and development program, manufacturing equipment and facilities in Dalian, and the experience and relationships of its management team
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The acquisition of Dalian Jinchuan would mark the Company’s strategic expansion into the power cable industry, as well as the execution of its strategy of expanding its downstream processing capabilities through vertical integration. The acquisition would also allow the Company to expand into Northeastern China. The Dalian Jinchuan brand of low- and medium-voltage power cable is well known and respected among customers in Northeastern China and other industry participants. The proposed acquisition will allow the Company to access the growing power market through Dalian Jinchuan’s broad sales network, existing customer relationships, research and development program, manufacturing equipment and facilities in Dalian, and the experience and relationships of its management team
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Freeport buys Twin Buttes Mine near Sahuarita
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Mining giant Freeport-McMoRan has bought the long-closed Twin Buttes Mine site near Sahuarita for $200 million and may mine it once again, company officials said. Phoenix-based Freeport-McMoRan Copper & Gold Inc. bought 8,900 acres of the open-pit mine
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Over time, what resulted from these assessments was that we selected the following sources to provide commercial electricity: hydroelectric, coal, nuclear, natural gas, and oil. (Oil is by far the smallest source.)
Note that each of these current sources meet ALL of the above six essential criteria — and if they don’t (like oil recently becoming more expensive), then they get replaced, by other conventional sources that do.
As a result, today, and a hundred years from now, these sources can provide ALL of the electrical needs of our society — and continue to meet all six criteria.
So what’s the problem?
A new criteria has been recently added to the list of criteria: environmental impact — and the current number one environmental impact consideration is greenhouse gas emissions (e.g. CO2).
So why has this joined the Big Six? It is a direct result of the current debate on global warming. In response to intense political pressure, governments have acquiesced to these forces to make emissions an additional criterion.
Having government step in and mandate that utility companies change the principles that have been the foundation of our electrical supply system for a hundred years is disconcerting, transforming such a successful system based on a position that is not yet scientifically resolved.
Furthermore, this new criteria for electrical supply sources now has taken priority over all the other six. It has, as of late, become the ONLY benchmark of importance — the other six have essentially been put aside, and are now given only lip service.
In this unraveling of sensibility there is one final incredible insult to science: alternative sources of commercial electricity that claim to meet this new super-criteria (to make a consequential impact on CO2 reduction) don’t even have to prove that they actually do it!
Let’s look at the environmental poster child: wind power, and examine each of the six time-tested criteria, then the new one…
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What is Your Water Really Worth?
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What most fail to realize is that the water industry is a “rising-cost” industry, with prices rising faster than the rate of inflation. Most costs are associated with infrastructure replacement, regulatory compliance (treatment), and population growth (for some areas). Labor, energy, and chemicals are the three major operating expenses for many systems where rising costs are coupled with flat or declining demand (conservation), another source of price pressure. One of the first points we always make with investors in the water sector is that water demand is relatively price inelastic; however, large-volume and discretionary use may fall due to price response. Ultimately, water customers experience the combined and regressive effect of water, wastewater, and stormwater charges. So get ready for higher water rates.
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General Motors announces that it will build electric motors in-house
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General Motors has decided that powertrains will remain one of its core competencies whether they are based on internal combustion or transferring electrons. To that end GM has announced that it will become the first U.S. based automaker to design, develop and manufacture its own electric motors. GM will invest $246 million on a high volume motor production facility that starts production for 2013.
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BHP, Chile’s Codelco Aim To Boost Mining Sector Suppliers
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SANTIAGO -(Dow Jones)- Chilean state copper mining giant Corporacion Nacional
del Cobre and global diversified miner BHP Billiton Ltd. (BHP) aim to boost
local mining services suppliers so they will eventually export their services
and technology worldwide.
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The development paradigm that brought China two decades of rapid growth and lifted millions of people out of poverty is reaching the limits of its utility. Well before the US credit bubble imploded, China’s leaders recognized that this old economic model, with its heavy reliance on exports and government-led investments, was straining at the seams.1 The global recession that followed Lehman Brothers’ collapse put the model’s drawbacks into sharp relief. When exports plunged, factories closed, and millions of Chinese migrants lost their jobs, Beijing responded with a $600 billion stimulus package and a torrent of new lending by state-owned banks.
But those remedies, while highly successful in restoring short-term growth, risk aggravating structural distortions that made China’s economy vulnerable to external-demand shocks in the first place. As the global crisis ebbs, China’s leaders realize more clearly than ever that they must unleash consumer spending to achieve sustainable growth.
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Corrosion And Fatigue: New Ways Of Warding Off Old Enemies
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A number of field tests have been conducted to evaluate the properties and performance of hybrid sol-gel coatings - the most notable of which so far has been at the Thames Barrier in London. Above, the three plates shown were submerged for six months at the Thames Barrier. The results show clearly corrosion of the bare aluminium sample (B), some protection with the sol-gel coating without bacteria (C) but no corrosion/biofouling of the biocoat sample (A).
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Accustep Enables Stepper Motors To Be Used In Place Of Servos
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MDrive Accustep systems are said to be an economical alternative to brushless motors for a range of motion control applications such as point-to-point positioning, conveyor control, web handling, drilling, and low-end camming. With the addition of torque control, rotary and linear positioning to torque specifications is also possible.
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Utility-Scale Distributed Solar Gets Blast-Off in California
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The California Public Utilities Commission has just voted unanimously to approve Southern California Edison’s plan to install scores of tiny (for a utility) 1 MW to 2 MW grid-connected systems scattered across the rooftops of commercial buildings throughout the utility’s Southern California service area - to eventually add up to a half Gigawatt of distributed solar power.
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Posted from Diigo. The rest of my favorite links are here.
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