3D Printer Goes Retail

MakerBot, a 3D printer maker which opened two new retail stores last week, is among the companies trying to bring the cutting-edge digital manufacturing technology to Main Street consumers, but skeptics say the debut may be premature.

MakerBot, a unit of Stratasys Ltd, opened retail stores this week in Boston and in Greenwich, Connecticut, both of which are twice the size of MakerBot’s first store, 1,500 square feet in downtown Manhattan.

The company offers designs for more than 100,000 items through its “Thingiverse” online user community. The products range from knick-knacks like zombie sculptures to jewelry, sink drains and even medical devices. They are printed using its line of corn-based plastic fibers in more than a dozen colors.

“For most people 3D printing is futuristic science fiction. We’re here to make it real,” said CEO Bre Pettis, who cut the ribbon at the store on Boston’s fashionable Newbury Street using scissors made on one of MakerBot’s Replicator printers which start at $2,199.

Pettis, who has purchased splashy magazine ads to promote 3D printers as holiday gifts, believes there could soon be a 3D printer on every block in America.

Yet some technology experts say 3D printers may not be ready for prime time because they are still much less user friendly than most modern consumer electronics.

“There is so much hype,” said Pete Basiliere, an analyst at technology research firm Gartner. “People are getting a little bit misled as to how easy it is,” he said.

Some investors also are skeptical of 3D printing’s readiness for the market. Short-seller Citron this week published an article questioning the earnings of Germany’s voxeljet AG’s, and shares in the sector fell, including those of MakerBot parent Stratasys and rivals 3D Systems Corp and ExOne Co.

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MIT Develops Inflatable Antenna

Satellites the size of shoe boxes, which are expected to one day allow researchers to explore space more efficiently, will soon have greater range.

MIT researchers have built and tested an inflatable antenna that can fold into such a satellite, then inflate in orbit to enable long range communications — from seven times the distance possible today.

The technology will let the small satellites, called CubeSats, move further into space and send valuable information to scientists back on earth.

“With this antenna, you could transmit from the moon, and even farther than that,” said Alessandra Babuscia, a researcher on the inflatable antenna team at MIT, in a statement. “This antenna is one of the cheapest and most economical solutions to the problem of communication. But all this research builds a set of options to allow the spacecraft … to fly in deep space.”

The MIT effort comes as engineers at the University of Michigan work on ways to propel such small spacecraft into interplanetary space. The team is building a plasma thruster that could fit in a 10-centimeter space and push a small satellite-bearing spacecraft into deep space.

The university researchers using superheated plasma that would push through a magnetic field to propel a CubeSat.

The MIT researchers are seeking to solve the communications problems and enable far-afield CubeSats to send data to and receive instructions from Earth.

The CubeSat devices cannot support radio dishes that are used today to let spacecraft communicate when far from Earth’s orbit.

The inflatable antennas significantly amplifies radio signals, allowing a CubeSat to transmit data back to Earth at a higher rate, according to the university.

MIT engineers have built two prototype antennae, each a meter wide, out of Mylar, which is a polyester film known for its strength and use as an electric insulator. One antenna was a cone shape, while the other looks more like a cylinder when inflated. Each fits into a 10-cubic-centimeter space within a CubeSat.

Each prototype contains a few grams of benzoic acid, which can be converted to a gas to inflate the antenna, MIT noted.

In testing, the cylindrical antenna performed “slightly better” than the cone shaped device, transmitting data 10 times faster, and seven times farther than existing CubeSat antennae.

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Apple To Acquire Embark

Apple is reportedly purchasing mapping app developer Embark, in a move that could lend more real-time navigation features for public transit to Apple’s own Maps app.

The acquisition, which was first reported by tech journalist Jessica Lessin, follows other recent mapping purchases for Apple: HopStop, another maker of apps for public transit directions; and Locationary, which provides data about local businesses; and WifiSLAM, an indoor location and mapping company.

Apple did not directly confirm its acquisition of Embark, but in an emailed statement said, “Apple buys smaller technology companies from time to time, and we generally do not discuss our purpose or plans.”

Apple declined to comment further on the deal.

Apple has faced some serious challenges over the past year in providing a consistently solid mapping product with its Maps app. Last September Apple CEO Tim Cook was forced to publicly apologize for a series of issues plaguing the company’s Maps app in Apple’s iOS 6 operating system.

Embark is a company based in the San Francisco Bay Area that makes a mobile mapping app designed to help people navigate mass transit systems. The company’s app provides “tailored trips” specific to the user’s region, along with notifications for late-running trains and other advisories and closures.

Embark’s technology, if it does find its way into a future Apple product, could enhance Apple’s mapping products and make the company a stronger competitor to rivals like Google. Google’s Maps app already offers real-time public transit navigation features, as do some smaller players like iTransitBuddy.

Embark’s app is available for free on the iPhone for 10 transit systems including Boston’s MBTA, Chicago’s L, the New York City Subway and San Francisco’s Bart and Caltrain systems, with more on the way, according to Embark’s website.

It is not clear whether Embark’s app will be shut down as part of the acquisition. The app was still available in Apple’s App Store at the time of this article’s posting.

Embark’s team could not be immediately reached to comment on the deal.

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The FCC Gives AT&T The OK

The U.S. Federal Communications Commission approved AT&T’s US$1.9 billion buying of spectrum from Qualcomm on Thursday, allowing the carrier to salvage one ambitious deal to acquire more spectrum, after squashing its planned merger with T-Mobile USA.

AT&T announced its plan to buy the Qualcomm spectrum last December, a few months before it revealed the much larger proposal to merge with T-Mobile for $39 billion. It said both were motivated by the need for more radio spectrum to increase the coverage and capacity of its LTE (Long-Term Evolution) network. AT&T withdrew the T-Mobile plan on Monday after the FCC, the Department of Justice and others said it was not in the public interest.

With the Qualcomm purchase, AT&T will get 6MHz of spectrum across the country in the coveted 700MHz band, as well as another 6MHz of spectrum in five major metropolitan areas: New York, Boston, Philadelphia, Los Angeles and San Francisco, according to the FCC’s order released Thursday. Those five markets represent about 70 million potential subscribers. The carrier has said it plans to use it as a supplemental downlink for its LTE network, allowing for faster and more consistent mobile data service.

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