Making Square Centimeters of Graphene on Copper and Graphene Transistor Progress


1. Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils.

Graphene films of the order of centimeters were grown on copper substrates by chemical vapor deposition using methane. The films are predominantly single-layer graphene with a small percentage,

3. MIT has an overview of current graphene research.

Anticipated Uses for Graphene Electronics

“Graphene could lead to faster computers that use less power, and to other sorts of devices for communications such as very high-frequency (radio-frequency-millimeter wave) devices,” said Professor and physical chemist Rod Ruoff, one of the corresponding authors on the Science article.

“Graphene might also find use as optically transparent and electrically conductive films for image display technology and for use in solar photovoltaic electrical power generation.”

Graphene, an atom-thick layer of carbon atoms bonded to one another in a “chickenwire” arrangement of hexagons, holds great potential for nanoelectronics, including memory, logic, analog, opto-electronic devices and potentially many others. It also shows promise for electrical energy storage for supercapacitors and batteries, for use in composites, for thermal management, in chemical-biological sensing and as a new sensing material for ultra-sensitive pressure sensors.

“There is a critical need to synthesize graphene on silicon wafers with methods that are compatible with the existing semiconductor industry processes,” Ruoff said. “Doing so will enable nanoelectronic circuits to be made with the exceptional efficiencies that the semiconductor industry is well known for.”

0 thoughts on “Making Square Centimeters of Graphene on Copper and Graphene Transistor Progress”

  1. I agree that improving age related medicine which creates the longer lifespans which means there are more older people will also mean that older people will be more active and healthier.

    The “Aging problem” just means that any retirement age will have to be shifted to older and older ages. Instead of a COLA (cost of living adjustment for inflation compensation) there will need to be a longevity adjustment to any retirement age.

    I see China’s leadership having fewer issues renegotiating any social contracts like retirement and pensions than western countries.

    I am also very sure that China will start having more kids. The predictions of unbreakable trends in demographics are the same ones that predict the extinction of Italians, Russians and Ukranians because of current negative population growth.

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  2. A few comments:

    1. In the knowledge economy, an aging population is helpful in the earlier stages. All things being equal, 40 year-olds are far more productive (per capita) than 25 year-olds. So the per capita numbers from Ukraine and China are expected. It’s when more and more people hit retirement that you expect problems.

    I don’t think China will have problems in this regard (I think SENS will work before that), but I just wanted to point this out.

    2. In my view, China’s biggest hurdles are political, rather than demographics, economics or pollution. Consider that recently China has been cutting back on granting visas, even to businessmen who have invested lots of money in China. When push comes to shove, the Communist Party cares more about maintaining political power than it does about economic growth.

    Further China has a history of breaking up into multiple states and cutting off contact with the outside world. I don’t know what the odds are of either of those scenarios, but it’s something to keep in mind. I wouldn’t be surprised though if Shanghai and Hong Kong/Guangzhou (whether independently or in a coordinated manner) decide they’ve had enough of Beijing’s central authority and can do better on their own.

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  3. I’ve been to Shanghai and Beijing. Sure, the pollution is bad, but I think the U.S. pollution was worse when I was a kid in the early 70’s.

    The aging population problem is a farce. An aging population simply makes it easier to implement free-market reforms and shut down all of state owned enterprises (SOEs) without generating huge amounts of unemployment.

    Besides, by 2050 biotech should have put paid to the aging process.

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