Thursday, March 7, 2013

Middle East is new global travel crossroads

In this Sunday, Feb. 10, 2013, photo, passengers wait to board an Emirates Airbus A380 aircraft parked at the new Concourse A of Dubai airport in Dubai, United Arab Emirates. For generations, international fliers have stopped over in London, Paris and Amsterdam. Now, they increasingly switch planes in Dubai, Doha and Abu Dhabi, making this region the new crossroads of global travel. The switch is driven by both the airports and airlines, all backed by governments that see aviation as the way to make their countries bigger players in the global economy. (AP Photo/Kamran Jebreili)

In this Sunday, Feb. 10, 2013, photo, passengers wait to board an Emirates Airbus A380 aircraft parked at the new Concourse A of Dubai airport in Dubai, United Arab Emirates. For generations, international fliers have stopped over in London, Paris and Amsterdam. Now, they increasingly switch planes in Dubai, Doha and Abu Dhabi, making this region the new crossroads of global travel. The switch is driven by both the airports and airlines, all backed by governments that see aviation as the way to make their countries bigger players in the global economy. (AP Photo/Kamran Jebreili)

In this Sunday, Feb. 10, 2013, photo. an Emirati technician works at the Emirates Network Control Center in Dubai, United Arab Emirates. For generations, international fliers have stopped over in London, Paris and Amsterdam. Now, they increasingly switch planes in Dubai, Doha and Abu Dhabi, making this region the new crossroads of global travel. The switch is driven by both the airports and airlines, all backed by governments that see aviation as the way to make their countries bigger players in the global economy. (AP Photo/Kamran Jebreili)

In this Sunday, Feb. 10, 2013, photo, passengers walk in the new Concourse A of Dubai airport in Dubai, United Arab Emirates. For generations, international fliers have stopped over in London, Paris and Amsterdam. Now, they increasingly switch planes in Dubai, Doha and Abu Dhabi, making this region the new crossroads of global travel. The switch is driven by both the airports and airlines, all backed by governments that see aviation as the way to make their countries bigger players in the global economy. (AP Photo/Kamran Jebreili)

In this Sunday, Feb. 10, 2013, photo, an aircraft departure board shows Emirates airlines' schedule at the new Concourse A of Dubai airport in Dubai, United Arab Emirates. For generations, international fliers have stopped over in London, Paris and Amsterdam. Now, they increasingly switch planes in Dubai, Doha and Abu Dhabi, making this region the new crossroads of global travel. The switch is driven by both the airports and airlines, all backed by governments that see aviation as the way to make their countries bigger players in the global economy. (AP Photo/Kamran Jebreili)

In this Sunday, Feb. 10, 2013, photo emirates cabin attendants prepare the inside an Airbus A380 aircraft for a flight at the new Concourse A of Dubai airport in Dubai, United Arab Emirates. For generations, international fliers have stopped over in London, Paris and Amsterdam. Now, they increasingly switch planes in Dubai, Doha and Abu Dhabi, making this region the new crossroads of global travel. The switch is driven by both the airports and airlines, all backed by governments that see aviation as the way to make their countries bigger players in the global economy. (AP Photo/Kamran Jebreili))

DUBAI, United Arab Emirates (AP) ? It's 1 a.m. and the sprawling airport in this desert city is bustling. Enough languages fill the air to make a United Nations translator's head spin.

Thousands of fliers arrive every hour from China, Australia, India and nearly everywhere else on the planet. Few venture outside the terminal, which spans the length of 24 football fields. They come instead to catch connecting flights to somewhere else.

If it weren't for three ambitious and rapidly expanding government-owned airlines ? Emirates Airline, Etihad Airways and Qatar Airways ? they might have never come to the Middle East.

For generations, international fliers have stopped over in London, Paris and Amsterdam. Now, they increasingly switch planes in Dubai, Doha and Abu Dhabi, making this region the new crossroads of global travel. The switch is driven by both the airports and airlines, all backed by governments that see aviation as the way to make their countries bigger players in the global economy.

Passengers are won over by their fancy new planes and top-notch service. But the real key to the airlines' incredible growth is geography. Their hubs in Qatar and the United Arab Emirates are an eight-hour flight away from two-thirds of the world's population, including a growing middle class in India, China and Southeast Asia that is eager to travel.

In the past five years, the annual number of passengers traveling through Dubai International Airport ? home to Emirates ? has jumped from 28.8 million to 51 million, a 77 percent increase. The airport now sees more passengers than New York's John F. Kennedy International Airport.

"Everybody accepts that the balance of global economic power is shifting to the east. The geographic position of the Gulf hubs makes them much more relevant today," says Willie Walsh, CEO of International Airlines Group, the parent company of British Airways and Iberia.

Persian Gulf carriers are already chipping away at some U.S. and European airlines' most lucrative business: long-haul international flights. But it's what's ahead that really has other airlines worried.

Gulf carriers hold one-third of the orders for the Boeing 777 and Airbus A380 ? two of the world's largest and farthest-flying jets. That's enough planes to put 70,000 passengers in the air at any given moment.

"They're being very aggressive," says Adam Weissenberg, who heads the travel and hospitality consulting group at Deloitte. "These airlines are not going away."

Modern day air routes can be traced to the post-World War II era when airlines such as Pan Am and British Airways built the first global networks. Flights from New York would cross the Atlantic, stop in Europe's capital cities to refuel and then head on to Africa, India and eventually Asia. Two generations later, those routes mostly remain.

The Gulf carriers are trying to change that. And they have a lot going for them.

Their hubs are in warm climates with little air-travel congestion and cheap, non-union workers. That means runways never shut down because of snow, planes don't circle waiting for their turn to land and flights aren't canceled by labor strikes as they often are in Europe.

"These guys are making the connection as seamless as possible," says John Thomas of L.E.K. Consulting.

Top-paying passengers are given over-the-top service that bolsters the airlines' reputations. On some Emirates planes, first-class passengers get private suites with doors, a 23-inch television, minibar and a phone to call flight attendants. If that's not enough, a "Do Not Disturb" sign can be switched on.

There are spa-like restrooms with heated floors and a shower.

But what really makes these Persian Gulf airlines unique is their focus on direct flights to smaller cities. The hub system they are developing is similar to what U.S. airlines did a generation ago, which allowed passengers to fly from, say, Knoxville, Tenn. to Sacramento, Calif. with just one connection.

"Forget Mumbai and New Delhi. There's another 40 secondary cities in India that I can take advantage of," says Etihad CEO James Hogan.

Airlines and governments in North America and Europe have been fighting back where they can.

In Canada, the government has limited the number of planes that Etihad, Emirates and Qatar can land at its airports. The move protects Air Canada, and its partner Lufthansa, which have a good business flying Canadians to India, Africa and Asia.

Separately, Lufthansa has tried to block the Gulf carriers' access to German airports. Etihad responded by purchasing 29 percent of rival Air Berlin, gaining entry to key European cities. It also owns 40 percent of Air Seychelles and smaller stakes in Virgin Australia and Irish carrier Aer Lingus.

"Working against us or trying to isolate us will not succeed because there is a very clear vision behind these airlines and we will keep on expanding," says Qatar's CEO Akbar Al Baker.

There has been a recent thaw. Emirates struck a 10-year deal with Australian airline Qantas; Etihad partnered with Air France-KLM on some routes; and Qatar is joining a global airline marketing and frequent flier partnership headed up by American Airlines and British Airways.

Still, there is plenty of worry given the size of the Gulf airlines' jet orders and concerns that they are deeply subsidized by their governments.

European airlines have suggested that the Gulf carriers benefit from access to discounted oil, a favorable tax climate and non-union labor, particularly low-wage immigrant workers from India and Pakistan.

But the biggest perk comes from Middle East governments who are investing heavily in attractive, efficient airports.

The Qatari government is building a $15.5 billion airport in Doha, designed to handle 24 million people each year, nearly six times the capacity of the existing facility. In Abu Dhabi, the capital of the United Arab Emirates, the government is building a sprawling terminal twice the size of The Mall of America.

And construction was just completed in Dubai of a concourse designed exclusively for Emirates' fleet of Airbus A380s. The new building has entire floors dedicated to first and business class customers who board directly from lounges, never interacting with coach passengers.

"Governments here understand the power of connectivity to drive economies," Tony Tyler, CEO of the International Air Transport Association said in a recent speech in Abu Dhabi.

The airlines deny getting special treatment.

Emirates got $10 million in startup cash from the government in 1985. The airline's president, Tim Clark, says his airline has had no assistance since and benefits from economies of scale. The airline reported a net profit of $628 million in its most recent fiscal year.

"People keep saying we're cheats," he says. "What they can't understand is that something could be as good and profitable as it has been without subsidies. You know why? Because they've all had subsidies themselves and they still can't make it."

Clark says the U.S. government subsidizes airlines by allowing them to wipe out debt in bankruptcy court. All three of the largest U.S. airlines ? American, Delta and United ? have used the courts in the past decade to restructure.

European airlines stand to lose the most business because of their geography, but that doesn't mean that U.S. carriers aren't watching closely.

The three Gulf airlines already fly to Chicago, Dallas, Houston, Los Angles, New York, San Francisco, Seattle and Washington and are adding flights at breakneck pace. The airlines aren't just dipping their toes into these markets; they are diving in, in some cases with giant double-deck Airbus A380s that can seat 489 passengers.

"I think they are a clear threat, much more so to our European and Asian colleagues, but nonetheless a threat to U.S. airlines as well," Jeff Smisek, CEO of United Continental Holdings Inc., said at an investor conference last March. "They have a very good product. And they have the total and absolute support of their governments."

The airlines are not household names yet, but they will be soon, analysts say.

United was a key sponsor of the U.S. Open tennis tournament for more than a decade. But last year, Emirates took over with a seven-year deal reported to have cost $90 million.

___

Scott Mayerowitz can be reached at http://twitter.com/GlobeTrotScott.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/f70471f764144b2fab526d39972d37b3/Article_2013-03-04-Global%20Airline%20Crossroads/id-90126615c2544cbbad29b6b7bc432b53

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Wednesday, March 6, 2013

'Tan Mom' looking for her place in the sun

Jonathan Sanger / NBC News

Patricia Krentcil, at her home in Nutley, N.J., is hoping to turn her notoriety into a lotion line, a book and a comedy act.

By Tracy Connor, Staff Writer, NBC News

The New Jersey woman known as "Tan Mom" has big plans now that the criminal case against her is over: a self-tanning lotion line, a book proposal, a comedy act ? and a raft of lawsuits.

But right now what Patricia Krentcil wants is a vacation.

"Somewhere hot so I can fry like a bacon and come back and say, 'Ha! Ha! You can't arrest me for lying in the sun,'" Krentcil, 44, said with a laugh.

"Not my face, though. Just my body."

It was Krentcil's face ? practically the color of a chestnut in some photos ? that made her a national punchline after she was arrested in May and charged with exposing her then-five-year-old daughter, Anna, to damaging ultraviolet rays at tanning salons in Nutley, N.J.

Julio Cortez / AP file

Patricia Krentcil as she waited to be arraigned at the Essex County Superior Court in May.

Krentcil denied it from the start, claiming a school nurse misinterpreted a sunburn Anna got from playing outside and that police misunderstood when her daughter said she "went tanning with Mommy."

Last week, a grand jury declined to indict her on a child endangerment charge, ending a 10-month saga that the mother of five described a nightmare.

"I?ve literally been stuck in my home for the past year," she said. "No matter where I go, everyone knows me. It?s very uncomfortable."

If she went out to eat, a murmur would run through the restaurant. A sofa-shopping trip had to be cut short when other customers started taking pictures. She was the object of ridicule in her children's schools.

"It doesn't matter where I go: I'm 'Tan Mom,'" she said.

She couldn't shake the nickname, so she embraced it, making TV appearances and getting a magazine makeover.

Over the last few months, she's been working with a self-styled skin guru, Dana Ramos, on launching her own line of self-tanners under the name Real Tan Mom Healthy Glow.

Ramos, who has her own skin-care line, helped rehabilitate Krentcil's complexion, which was marred by oversize pores, dark spots, and lines from up to 20 sessions in the tanning bed each month.

She said she banned Krentcil from tanning -- many salons said they wouldn't serve her anyway -- and oversaw a regimen of peels and moisturizers. A plastic surgeon helped with some fillers.

"I haven't tanned in forever," Krentcil said, sounding not entirely happy about it.

She vowed she'll never set foot in another salon, but insisted there's nothing wrong with catching some natural rays, along as she keeps the sun off her paler, but hardly porcelain face.

With her stock broker husband out of work and thousands in legal bills to pay, Krentcil is looking for other ways to cash in on her notoriety beyond the lotion line, which is weeks away from being finished.

She said she is writing a book, but doesn't have an agent or publisher. Once the subject of a "Saturday Night Live" sendup, she'd like to leverage her wacky story and offbeat personality for a comedy routine.

And she's ready for warmer climes.

"I don't like this town at all or this state, more or less ... I wanna go somewhere beautiful," she said.

In an exclusive interview with TODAY from May of 2012, Patricia Krentcil, the New Jersey mom accused of taking her five-year-old daughter into a tanning booth, insisted she is innocent and said she wishes everyone would leave her family alone. NBC's Mara Schiavocampo reports.

Krentcil said she is planning lawsuits against anyone who made money off her story, like the manufacturers of a Barbie-type doll? based on her, or Halloween costumes.

She said she also wants to sue the school district since that's where the initial complaint about Anna's sunburn came from. The district superintendent did not return a call for comment.

Nearly a year after her arrest, Krentcil said she?s at a loss to explain why the authorities went after her. "Envy? Jealousy?" she said.

She's certainly not ready to forgive and forget, boasting that when the school nurse called recently about her daughter being ill, she barked at her, "Oh, you didn't call the police?"

For the record, she said, she never once put her child in a tanning bed. The fair-skinned redhead would lie on towels on the floor, sometimes with a mask over her eyes, while her mother soaked up the UV rays, she said.

At one point, she was offered a plea deal with 60 days of probation and turned it down, deciding she'd take her chances with a jury if it came to that.

"They made a mockery of me,? she said. ?But I stood by my beliefs and said, 'I did not do this.'"

Related:

What's caused the N.J. tanning mom's leathery look?

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Source: http://usnews.nbcnews.com/_news/2013/03/04/17183166-tan-mom-patricia-krentcil-looking-for-her-place-in-the-sun?lite

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Sheryl Sandberg Launches ?Lean In? Organization As A Global Community For Workplace Equality

leaninlogoThis morning Facebook COO Sheryl Sandberg officially launched "Lean In," a non-profit organization aimed at creating a global community that encourages women to continue to be active and ambitious in their careers even as they start families. The launch of the organization, which Sandberg co-founded with Rachel Thomas, comes less than a week before Sandberg's highly anticipated book, Lean In: Women, Work, and the Will to Lead is set to make its debut on March 11.

Source: http://feedproxy.google.com/~r/Techcrunch/~3/789TBUVb7ik/

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Video: More Highs Tomorrow?

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Source: http://www.nbcnews.com/video/cnbc/51056237/

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Spectrum, key ingredient to fuel Nigeria mobile broadband revolution

The GSM Association (GSMA) in its 2010 Report on Nigeria acknowledges that “broadband is already mobile”. It is the case that our mobile phones have grown from providing basic telephony and SMS to providing multimedia services                  Image credit: 123RF

The GSM Association (GSMA) in its 2010 Report on Nigeria acknowledges that ?broadband is already mobile?. It is the case that our mobile phones have grown from providing basic telephony and SMS to providing multimedia services Image credit: 123RF

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By Osondu Nwokoro

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The GSM Association (GSMA) in its 2010 Report on Nigeria acknowledges that “broadband is already mobile”. It is the case that our mobile phones have grown from providing basic telephony and SMS to providing multimedia services                  Image credit: 123RF

The GSM Association (GSMA) in its 2010 Report on Nigeria acknowledges that ?broadband is already mobile?. It is the case that our mobile phones have grown from providing basic telephony and SMS to providing multimedia services Image credit: 123RF

Access to ?always on? and ?fast Internet service? generally referred to as Broadband is now an essential ingredient for participating in the global digital society. The presence or absence of it determines what side of the digital divide a country and its citizens would find themselves.

It has now become a basic need and an index of development like access to electricity and telephones, etc. Indeed in Finland, Broadband is now considered a fundamental human right.

The Broadband Commission (a joint initiative of the International Telecommunication Union (ITU) and the United Nations Educational, Scientific and Cultural Organization (UNESCO) has stated that ?the Internet and other ICT platforms now constitute critical modern resources and are? vital prerequisites for participation in today?s growing digital economy.?

It further acknowledges that ?the benefits of Broadband are profound ? in opening up young minds to new horizons through educational technologies, in empowering women to expand their opportunities through genuine choices, in improving awareness of hygiene and healthcare and in helping family breadwinners find work, a better salary or return on their goods.

Through broadband, the provision of public services is transformed to make them global public goods for the global good. Greater access to the Internet and broadband applications and services help accelerate achievement of internationally-agreed development goals, including the Millennium Development Goals (MDGs).?

Broadband facilitates e-commerce, e-education, e-entertainment, e-health and e-government ? the smart world as it is commonly referred to, where online activities bring about huge efficiencies in daily activities and also creates new opportunities.

Mobile or m-services have introduced the element of ?mobility? to the smart world. In Europe, the smart concept (running on ?e? and ?m? services) has been extended to smart-homes and smart-cities. Nigeria is not left out in aspirations in this regard ? the Centenary and Eko Atlantic Cities in Abuja and Lagos respectively are smart city developments, with the latter perhaps the first smart-city initiative in Africa.

The Broadband Commission charges that ?access to broadband infrastructure and services must therefore be a top policy priority for countries around the globe, developed and developing alike as well as Least Developed Countries?.? It urges ?governments and business to work together to develop innovative policy frameworks, business models and financing arrangements needed to facilitate growth in access to broadband worldwide.?

Without a doubt, Nigeria has made great progress in telephony penetration over the last 10 years.? Telephone penetration stands at 81% as of December, 2012 according to statistics published by the Nigerian Communications Commission (NCC). Having addressed telephone penetration, the next challenge on the horizon is broadband accessibility.?

 Osondu C. Nwokoro, Director, Regulatory Affairs and Special Projects, Airtel Nigeria, says that: The telecommunications operators are willing to play their part and have demonstrated such intent through continued deployment of infrastructure in the face of very daunting challenges. What is so far missing in the equation is an investor-assuring statement on the deployment of the 700GHz and 2.6GHz spectrum from government.

Osondu C. Nwokoro, Director, Regulatory Affairs and Special Projects,
Airtel Nigeria, says that: The telecommunications operators are willing to play their part and have demonstrated such intent through continued deployment of infrastructure in the face of very daunting challenges. What is so far missing in the equation is an investor-assuring statement on the deployment of the 700GHz and 2.6GHz spectrum from government.

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According to statistics from the ITU, notwithstanding that Nigeria has 45 million Internet users, the highest online population in Africa, only?nine percent or about 14.5 million are actually internet subscribers. Internet-to-Home Penetration is 4.6% while broadband penetration is at a mere 6%. With a youthful population and growing middle class, the market holds great potential.

A recent media review indicates that Nigerians make up nearly 30% of summer visitors to Dubai where payments for goods and service are commonly made via mobile devices. The foregoing is indicative of a huge market? for mobile broadband services in Nigeria.

So the recent initiative of the Federal Government in inaugurating a Presidential Committee on Broadband with membership drawn from both the public and the private sectors is very encouraging. The NCC?s initiative of an ?Open Access? model to facilitate non-discriminatory access for broadband development is also acknowledged.

The dearth of fixed infrastructure and the ubiquity of mobile infrastructure built over the last decade make progression from mobile telephony to mobile broadband the logical path for Nigeria to actualize broadband.

The GSM Association (GSMA) in its 2010 Report on Nigeria acknowledges that ?broadband is already mobile?. It is the case that our mobile phones have grown from providing basic telephony and SMS to providing multimedia services ? to varying degrees, we talk, check our emails and chat, find information, get news online, watch movies and sports, make payments for services, purchase items and make bookings, interact with family, friends and colleagues as well as with business associates and public officials on social media. These mobile devices or tablets have become pervasive tools of the digital society, much like the pen and paper or the hoe and cutlass before it.

The requirements for the effective delivery of Mobile Broadband are: international connectivity to deliver needed bandwidth to the country, domestic high speed connectivity to move bandwidth inland and radio spectrum to distribute the bandwidth to the ?last mile? for consumer access. Undersea cables have landed impressive international bandwidth in Nigeria, fibre connectivity to switching centers across key cities is in place and growing in capacity ? the challenge of fibre deployments and cuts is a topic for another discussion and mobile infrastructure is spreading to support the progression from Mobile Telephony to Mobile Broadband.? Government therefore needs to take necessary steps to? ensure availability of the 700 MHz and 2.6 GHz spectrum for the telecommunications industry.

Similar to the situation in 2001 at the onset of the ?mobile telephony revolution? in Nigeria, we are today on the brink of a ?mobile broadband revolution?; the 3G network will very soon become as pervasive as the 2G, or more specifically, the 2.75G network. Therefore the? industry is poised for 4G deployment on LTE but is constrained by spectrum availability as the 700MHz Digital Dividend band and 2.6 GHz which are acclaimed by the ITU as most suitable for LTE deployment in sparsely (rural) and densely (urban) areas respectively are not currently available for use by the telecommunications industry as they are being deployed for broadcast services by the National Broadcasting Commission (NBC).

We had not met the recommended Analogue-to-Digital Broadcast Switchover in 2012? and this? is depriving the country the opportunity of making the 700 MHz band available for Mobile Broadband. A revised plan for this is yet to be formally announced and there is no certainty that we will meet the internationally agreed timeline of June 2015 for Analogue Broadcast Switch off.

There is also uncertainty as to arrangements for the release of the 2.6 GHz spectrum to the NCC for Mobile Broadband. The present initiative of Government to merge the Technical Departments of the NBC and NCC is noted but there is obviously a need for greater clarity on the modalities of the merger and timely resolution of the various other issues around the transfer of the spectrum to the communications industry.?

It goes without saying that government will earn revenues directly from the activities of ICT companies in the Mobile Broadband ecosystem, while socio-economic development will also be facilitated by the service. The World Bank has stated that every 10 percent increase in broadband penetration accelerates economic growth by 1.38 percent, and that 1.4 to 3.6 indirect and induced jobs and be potentially generated from each direct job in the sector.

On its part, the GSMA has indicated that with positive policy action, Mobile Broadband can potentially contribute over 1.7% of non-oil GDP in 2015, supporting diversification of the Nigerian economy. It notes that ?? such economic gains, however, depend on a positive environment created by all stakeholders that addresses infrastructural problems, spectrum management, and access to the Internet for women and rural citizens?. The developmental benefits of mobile broadband cannot therefore be overstated.

Clear-minded public-private collaboration is evidently a key requirement for Mobile Broadband deployment and adoption in Nigeria. The telecommunications operators are willing to play their part and have demonstrated such intent through continued deployment of infrastructure in the face of very daunting challenges. What is so far missing in the equation is an investor-assuring statement on the deployment of the 700GHz and 2.6GHz spectrum from government.

Indications, from the establishment of the Presidential Broadband Committee and the merger of the NCC and NBC Technical Departments, are that this is on its agenda. However prompt decisions around these spectrum bands as well as clear communication and expeditious implementation? of such decisions are required so that the Nigerian telecommunications industry can start preparing in earnest for the forthcoming Mobile Broadband Revolution.

?*?Osondu C. Nwokoro is Director, Regulatory Affairs and Special Projects,?Airtel Nigeria.

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Source: http://www.technologytimesng.com/spectrum-key-ingredient-to-fuel-nigeria-mobile-broadband-revolution/

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Man-made material pushes the bounds of superconductivity

Monday, March 4, 2013

A multi-university team of researchers has artificially engineered a unique multilayer material that could lead to breakthroughs in both superconductivity research and in real-world applications.

The researchers can tailor the material, which seamlessly alternates between metal and oxide layers, to achieve extraordinary superconducting properties ? in particular, the ability to transport much more electrical current than non-engineered materials.

The team includes experts from the University of Wisconsin-Madison, Florida State University and the University of Michigan. Led by Chang-Beom Eom, the Harvey D. Spangler Distinguished Professor of materials science and engineering and physics at UW-Madison, the group described its breakthrough March 3, 2013, in the advance online edition of the journal Nature Materials.

Superconductors, which presently operate only under extremely cold conditions, transport energy very efficiently. With the ability to transport large electrical currents and produce high magnetic fields, they power such existing technologies as magnetic resonance imaging and Maglev trains, among others. They hold great potential for emerging applications in electronic devices, transportation, and power transmission, generation and storage.

Carefully layered superconducting materials are increasingly important in highly sophisticated applications. For example, a superconducting quantum interference device, or SQUID, used to measure subtle magnetic fields in magnetoencephalography scans of the brain, is based on a three-layer material.

However, one challenge in the quest to understand and leverage superconductivity is developing materials that work at room temperature. Currently, even unconventional high-temperature superconductors operate below -369 degrees Fahrenheit.

An unconventional high-temperature superconductor, the researchers' iron-based "pnictide" material is promising in part because its effective operating temperature is higher than that of conventional superconducting materials such as niobium, lead or mercury.

The research team engineered and measured the properties of superlattices of pnictide superconductors. A superlattice is the complex, regularly repeating geometric arrangement of atoms ? its crystal structure ? in layers of two or more materials. Pnictide superconductors include compounds made from any of five elements in the nitrogen family of the periodic table.

The researchers' new material is composed of 24 layers that alternate between the pnictide superconductor and a layer of the oxide strontium titanate. Creating such systems is difficult, especially when the arrangement of atoms, and chemical compatibility, of each material is very different.

Yet, layer after layer, the researchers maintained an atomically sharp interface ? the region where materials meet. Each atom in each layer is precisely placed, spaced and arranged in a regularly repeating crystal structure.

The new material also has improved current-carrying capabilities. As they grew the superlattice, the researchers also added a tiny bit of oxygen to intentionally insert defects every few nanometers in the material. These defects act as pinning centers to immobilize tiny magnetic vortices that, as they grow in strength in large magnetic fields, can limit current flow through the superconductor. "If the vortices move around freely, the energy dissipates, and the superconductor is no longer lossless," says Eom. "We have engineered both vertical and planar pinning centers, because vortices created by magnetic fields can be in many different orientations."

Eom sees possibilities for researchers to expand upon his team's success in engineering man-made superconducting structures. "There's a need to engineer superlattices for understanding fundamental superconductivity, for potential use in high-field and electronic devices, and to achieve extraordinary properties in the system," says Eom. "And, there is indication that interfaces can be a new area of discovery in high-temperature superconductors. This material offers those possibilities."

###

University of Wisconsin-Madison: http://www.wisc.edu

Thanks to University of Wisconsin-Madison for this article.

This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.

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Source: http://www.labspaces.net/127112/Man_made_material_pushes_the_bounds_of_superconductivity

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