congrats, you can read. i didn't write it, just posted it as it relates to the CVV board in discussions here. For all we know CVD knows about this technology and is making the machines to produce it.
Growing graphene cells directly on silicon in the lab has boosted energy density of batteries by 1.8 times compared to conventional batteries.
For all of the progress we've made with mobile devices, they're still limited by relatively older technology. Namely: The batteries that power them typically get us through a day or so.
Samsung's research group may be on to something that nearly doubles that run-time by expanding the energy density -- the amount of stored power in a given area -- to 1.8 times of current batteries.
On Friday, Neowin noted that the research team published its experimental findings, explaining how it achieved this result in the labs.
Samsung's team used silicon anodes in lieu of graphite ones; an approach many efforts in this space have taken. The challenge here though is that the silicon can expand or contract during the battery charging and discharging cycles.
To counter that, Samsung's team created a process to grow graphene cells directly on the silicon in layers that can adjust to allow for the silicon's expansion:
"The graphene layers anchored onto the silicon surface accommodate the volume expansion of silicon via a sliding process between adjacent graphene layers. When paired with a commercial lithium cobalt oxide cathode, the silicon carbide-free graphene coating allows the full cell to reach volumetric energy densities of 972 and 700 Wh l-1 at first and 200th cycle, respectively, 1.8 and 1.5 times higher than those of current commercial lithium-ion batteries."
While the technology sounds promising, keep in mind that this is just a research project. Any commercial implementation won't happen quickly, so for now, you'll have to keep plugging in that phone, tablet or watch every night.
EXETER, England, June 25 (UPI) -- Scientists at the University of Exeter say they've developed a way to make graphene better, cheaper, faster -- and at mass scale.
Lead researcher Monica Craciun says the technology, known as the nanoCVD system, promises to usher in "a graphene-driven industrial revolution."
Graphene is a single layer of carbon atoms, organized a honeycomb like structure. The material is super strong, flexible and conductive.
"The vision for a 'graphene-driven industrial revolution' is motivating intensive research on the synthesis of high quality and low cost graphene," Craciun said in a press release. "Currently, industrial graphene is produced using a technique called chemical vapor deposition (CVD). Although there have been significant advances in recent years in this technique, it is still an expensive and time consuming process."
Craciun and her colleagues, in cooperation with U.K.-based graphene company Moorfield, have tweaked CVD technology to develop a "cold wall" device. CVD technology mixes volatile vapors to create a desired deposited material (like a film of graphene) on a substrate.
The research team's new nanoCVD system reportedly grows graphene at a rate 100 times faster than traditional methods, and at one percent of the cost.
"We are very excited about the potential of this breakthrough using Moorfield's technology and look forward to seeing where it can take the graphene industry in the future," said Jon Edgeworth, the company's technical director.
Researchers have used the device to build the first graphene-based transparent and flexible touch sensor, which features ferric chloride molecules sandwiched between two graphene layers. Scientists say the material could used to create flexible, electronic skin for robots.
SB, does SPCB have options that can be traded? If not, would triple witching affect the stock? Enjoy the weekend everyone. Happy Fathers Day.
todays action will tell. I think it will dip into the 11s, but what do i know. I have all the shares i can afford at this point. Everything will take care of itself IF they announce a substantial contract (Kenya??).
when you begin to forget about the shelf registration, it hits. BAM. IMO, look for 11.50ish for a while. Let's hope for 15 by end of year now.
Nolic, just curious, how long have you been following CVV? Is this a big position for you?
World's Thinnest Light Bulb Created from Graphene
by Jesse Emspak, Live Science Contributor | June 15, 2015 01:05pm ET
When a current was run through strips of graphene that were placed across a trench of silicon, the result was light emission.
[Pin It] When a current was run through strips of graphene that were placed across a trench of silicon, the result was light emission.
Graphene, a form of carbon famous for being stronger than steel and more conductive than copper, can add another wonder to the list: making light.
Researchers have developed a light-emitting graphene transistor that works in the same way as the filament in a light bulb.
"We've created what is essentially the world's thinnest light bulb," study co-author James Hone, a mechanical engineer at Columbia University in New York, said in a statement.
Scientists have long wanted to create a teensy "light bulb" to place on a chip, enabling what is called photonic circuits, which run on light rather than electric current. The problem has been one of size and temperature — incandescent filaments must get extremely hot before they can produce visible light. This new graphene device, however, is so efficient and tiny, the resulting technology could offer new ways to make displays or study high-temperature phenomena at small scales, the researchers said. [8 Chemical Elements You've Never Heard Of]
When electric current is passed through an incandescent light bulb's filament — usually made of tungsten — the filament heats up and glows. Electrons moving through the material knock against electrons in the filament's atoms, giving them energy. Those electrons return to their former energy levels and emit photons (light) in the process. Crank up the current and voltage enough and the filament in the light bulb hits temperatures of about 5,400 degrees Fahrenheit (3,000 degrees Celsius) for an incandescent.
not sure, at least it seems to be volume related. CVV is small company. They don't sell to retail so not many people know of them, much less the graphene story. Will need an overall, greater awareness, like 3D printing, and then people will seek out a company like CVV. Still holding strong. Thought we would see $15 by now.
over promising just gets you more lawsuits the second you miss on one of the promises. I hate this as much as the next guy but this is the way it is for now. Maybe we get an order announcement once in a while other than that it is quarterly earnings reports.
with 90 minutes left to trade, volume is on target to come in very close to avg. with the SP only up .15. HOD was 14. I would have expected a little more action. Perhaps a delay and will happen tomorrow. Would have expected to touch $15 today and settle in low 14's. Just saying. GLTA. Long term is shaping up nicely.
Nice contracts. IMO, this adds about .10 to eps for this year. Anyone figure anything much different? And should add about $1.50 to SP.