Tag Archives: single

Electric motor made from a single molecule

By Jason Palmer, Science and technology reporter, BBC News

Researchers have created the smallest electric motor ever devised.

The motor, made from a single molecule just a billionth of a metre across, is reported in Nature Nanotechnology.

The minuscule motor could have applications in both nanotechnology and in medicine, where tiny amounts of energy can be put to efficient use.

Tiny rotors based on single molecules have been shown before, but this is the first that can be individually driven by an electric current.

“People have found before that they can make motors driven by light or by chemical reactions, but the issue there is that you’re driving billions of them at a time – every single motor in your beaker,” said Charles Sykes, a chemist at Tufts University in Massachusetts, US.

“The exciting thing about the electrical one is that we can excite and watch the motion of just one, and we can see how that thing’s behaving in real time,” he told BBC News.

Miniature uses

The butyl methyl sulphide molecule was placed on a clean copper surface, where its single sulphur atom acted as a pivot.

The tip of a scanning tunnelling microscope – a tiny pyramid with a point just an atom or two across – was used to funnel electrical charge into the motor, as well as to take images of the molecule as it spun.

It spins in both directions, at a rate as high as 120 revolutions per second. ….

Read more → BBC

Britain: Royal wedding exposes deep class divisions

by Alan Woods

On Friday 29 April the people of Britain will be invited to participate in the joyful celebration of the marriage of Mr. William Windsor and Ms. Katherine Middleton. At the same time that the government is cutting billions from unnecessary extravagances such as hospitals, schools, teachers, nurses, the old and the sick, the unemployed and single parents, the Coalition has had the good sense to spend a lot of money on something as essential to the Public Good as the nuptials of Willy and Kate.

One can see many advantages in this. At a time of falling living standards for everyone who is not either a member of the royal family or a banker, it can take the minds of the British public off unpleasant thoughts of unpaid debts and unemployment. It might even make them forget the recent mass demonstration that brought half a million of them onto the streets of London to protest the vicious cuts being implemented by the ruling Conservative-Lib-Dem Coalition. …

Read more : Marxist.com

Dubai on Empty

By A. A. Gill

Excerpt:

…. You look at this place and you realize not a single thing is indigenous, not one of this culture’s goods and chattels originated here. Even the goats have gone. This was a civilization that was bought wholesale. The Gulf is the proof of Carnegie’s warning about wealth: “There is no class so pitiably wretched as that which possesses money and nothing else.” Emiratis are born retired. They waft through this city in their white dishdashas and headscarves and their obsessively tapered humorless faces. They’re out of place in their own country. They have imported and built a city, a fortress of extravagance, that excludes themselves. They have become duplicitous, schizophrenic. They don’t allow their own national dress in the clubs and bars that serve alcohol, the restaurants with the hungry girls sipping champagne. So they slip into Western clothes to go out.

The Gulf Arabs have become the minority in this country they wished out of the desert. They are now less than 20 percent of the total population. Among the other 80-plus percent are the white mercenary workers who come here for tax-free salaries to do managerial and entrepreneurial jobs, parasites and sycophants for cash. For them money is a driving principle and validation. They came to be young, single, greedy, and insincere. None of them are very clever. So they live lives that revolve around drink and porn sex and pool parties and barbecues with a lot of hysterical laughing and theme nights, karaoke, and slobbery, regretful coupling. In fact, as in all cases of embarrassing arrested development, these expats on the short-term make don’t expect to put down roots here, have children here, or grow old here. Everyone’s on a visa dependent on a job.

Then there is a third category of people: the drones. The workers. The Asians: Indians, Pakistanis, Sri Lankans, and Filipinos. Early in the morning, before the white mercenaries have negotiated their hangovers, long before the Emiratis have shouted at the maid, buses full of hard-hatted Asians pull into building sites. They have the tough, downtrodden look of Communist posters from the 30s—they are both the slaves of capital and the heroes of labor. Asians man the hotels; they run the civil service and the utilities and commercial businesses; they are the clerks and the secretaries, the lawyers, the doctors, the accountants; there isn’t a single facet of this state that would function if they didn’t maintain it. No one with an Emirati passport could change a fuse. Yet, the workers, who make up roughly 71 percent of the population, have precious few rights here. They can’t become citizens, though some are the third generation of their family to be born here. They can be deported at any time. They have no redress. Many of the Asian laborers are owed back pay they aren’t likely to get. There are reams of anecdotal stories about the abuse of guest workers. I’m told about the Pakistani shop assistant who, picking up an Arab woman’s shopping bags, accidentally passed gas, got arrested, and was jailed.