By now we've heard plenty of rumored details, though nothing confirmed, about what Samsung's going to be showing off on May 3 in London. And today the plot thickens somewhat with the unveiling of a new teaser image on an official Facebook page. The manufacturer's uploaded the image you see above to its Danish Facebook gallery, showing the date and time (in Denmark) of the Galaxy S III new Galaxy launch event. Over on the right is the unmistakable outline of a curved smartphone, similar to the Galaxy Nexus. The profile of the device is different to what we've seen in recent leaked images, suggesting those units may indeed have been Galaxy S III hardware in generic dummy cases, as has been reported.
No clues as to what, if anything, that plus sigh is all about. But if you have any wild theories, be sure to shout out in the comments.
It's coming, folks. And we've no doubt the next couple of weeks will be packed with more rumors and speculation (and maybe a fresh leak or two), as we await Samsung's next big thing. Keep watching AC for all the latest.
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DNA origami puts a smart lid on solid-state nanopore sensorsPublic release date: 19-Apr-2012 [ | E-mail | Share ]
Contact: Patrick Regan regan@zv.tum.de 49-892-891-0515 Technische Universitaet Muenchen
2 TUM advances combine for new capabilities in single-molecule sensing
The latest advance in solid-state nanopore sensors devices that are made with standard tools of the semiconductor industry yet can offer single-molecule sensitivity for label-free protein screening expands their bag of tricks through bionanotechnology. Researchers at the Technische Universitaet Muenchen have enhanced the capabilities of solid-state nanopores by fitting them with cover plates made of DNA. These nanoscale cover plates, with central apertures tailored to various "gatekeeper" functions, are formed by so-called DNA origami the art of programming strands of DNA to fold into custom-designed structures with specified chemical properties. The results are published in Angewandte Chemie International Edition.
Over the past few years, Prof. Hendrik Dietz's research group at TUM has been refining control over DNA origami techniques and demonstrating how structures made in this way can enable scientific investigations in diverse fields. Meanwhile, Dr. Ulrich Rant's research group has been doing the same for solid-state nanopore sensors, where the basic working principle is to urge biomolecules of interest, one at a time, through a nanometer-scale hole in a thin slab of semiconductor material. When biomolecules pass through or linger in such a sensor, minute changes in electrical current flowing through the nanopore translate into information about their identity and physical properties. Now Dietz and Rant, who are both Fellows of the TUM Institute for Advanced Study, have begun to explore what these two technologies can accomplish together.
The new device concept purely hypothetical before this series of experiments begins with the placement of a DNA origami "nanoplate" over the narrow end of a conically tapered solid-state nanopore. "Tuning" the size of the central aperture in the DNA nanoplate should allow filtering of molecules by size. A further refinement, placing single-stranded DNA receptors in the aperture as "bait," should allow sequence-specific detection of "prey" molecules. Conceivable applications include biomolecular interaction screens and detection of DNA sequences. In principle, such a device could even serve as the basis of a novel DNA sequencing system.
Step by step, the researchers investigated each of these ideas. They were able to confirm the self-assembly of custom-designed DNA origami nanoplates, and then their placement after being electrically guided into position over solid-state nanopores. They were able to demonstrate both size-based filtering of biomolecules and bait/prey detection of specific target molecules. "We're especially excited about the selective potential of the bait/prey approach to single-molecule sensing," Dietz says, "because many different chemical components beyond DNA could be attached to the appropriate site on a DNA nanoplate."
High-resolution sensing applications such as DNA sequencing will face some additional hurdles, however, as Rant explains: "By design, the nanopores and their DNA origami gatekeepers allow small ions to pass through. For some conceivable applications, that becomes an unwanted leakage current that would have to be reduced, along with the magnitude of current fluctuations."
###
This research was supported by the German Excellence Initiative through the TUM Institute for Advanced Study, the Nano Initiative Munich, and the Center for Integrated Protein Science Munich; by the Collaborative Research Center SFB 863 of the German Research Foundation (DFG); and by a European Research Council Starting Grant to Hendrik Dietz. Ruoshan Wei was supported by the TUM Graduate School's Faculty Graduate Center of Physics.
Original publication:
DNA Origami Gatekeepers for Solid-State Nanopores
Ruoshan Wei, Thomas G. Martin, Ulrich Rant, and Hendrik Dietz
Angewandte Chemie International Edition on-line, April 4, 2012.
DOI: 10.1002/anie.201200688
Contact:
Prof. Hendrik Dietz
Department of Physics
Technische Universitt Mnchen
Am Coulombwall 4a, 85748 Garching, Germany
Tel.: +49 (0)89 289 11615
E-Mail: dietz@tum.de
Web: http://bionano.physik.tu-muenchen.de/
Dr. Ulrich Rant
Walter Schottky Institute
Technische Universitt Mnchen
Am Coulombwall 3, 85748 Garching, Germany
Tel.: +49 (0)89 289 11578
E-Mail: ulrich.rant@wsi.tum.de
Web: http://www.wsi.tum.de/Research/AbstreitergroupE24/ResearchAreas/BioNanostructures/tabid/136/Default.aspx
Technische Universitaet Muenchen (TUM) is one of Europe's leading universities. It has roughly 460 professors, 9000 academic and non-academic staff, and 31,000 students. It focuses on the engineering sciences, natural sciences, life sciences, medicine, and economic sciences. After winning numerous awards, it was selected as an "Elite University" in 2006 by the Science Council (Wissenschaftsrat) and the German Research Foundation (DFG). The university's global network includes an outpost with a research campus in Singapore. TUM is dedicated to the ideal of a top-level research-based entrepreneurial university. http://www.tum.de
[ | E-mail | Share ]
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AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.
DNA origami puts a smart lid on solid-state nanopore sensorsPublic release date: 19-Apr-2012 [ | E-mail | Share ]
Contact: Patrick Regan regan@zv.tum.de 49-892-891-0515 Technische Universitaet Muenchen
2 TUM advances combine for new capabilities in single-molecule sensing
The latest advance in solid-state nanopore sensors devices that are made with standard tools of the semiconductor industry yet can offer single-molecule sensitivity for label-free protein screening expands their bag of tricks through bionanotechnology. Researchers at the Technische Universitaet Muenchen have enhanced the capabilities of solid-state nanopores by fitting them with cover plates made of DNA. These nanoscale cover plates, with central apertures tailored to various "gatekeeper" functions, are formed by so-called DNA origami the art of programming strands of DNA to fold into custom-designed structures with specified chemical properties. The results are published in Angewandte Chemie International Edition.
Over the past few years, Prof. Hendrik Dietz's research group at TUM has been refining control over DNA origami techniques and demonstrating how structures made in this way can enable scientific investigations in diverse fields. Meanwhile, Dr. Ulrich Rant's research group has been doing the same for solid-state nanopore sensors, where the basic working principle is to urge biomolecules of interest, one at a time, through a nanometer-scale hole in a thin slab of semiconductor material. When biomolecules pass through or linger in such a sensor, minute changes in electrical current flowing through the nanopore translate into information about their identity and physical properties. Now Dietz and Rant, who are both Fellows of the TUM Institute for Advanced Study, have begun to explore what these two technologies can accomplish together.
The new device concept purely hypothetical before this series of experiments begins with the placement of a DNA origami "nanoplate" over the narrow end of a conically tapered solid-state nanopore. "Tuning" the size of the central aperture in the DNA nanoplate should allow filtering of molecules by size. A further refinement, placing single-stranded DNA receptors in the aperture as "bait," should allow sequence-specific detection of "prey" molecules. Conceivable applications include biomolecular interaction screens and detection of DNA sequences. In principle, such a device could even serve as the basis of a novel DNA sequencing system.
Step by step, the researchers investigated each of these ideas. They were able to confirm the self-assembly of custom-designed DNA origami nanoplates, and then their placement after being electrically guided into position over solid-state nanopores. They were able to demonstrate both size-based filtering of biomolecules and bait/prey detection of specific target molecules. "We're especially excited about the selective potential of the bait/prey approach to single-molecule sensing," Dietz says, "because many different chemical components beyond DNA could be attached to the appropriate site on a DNA nanoplate."
High-resolution sensing applications such as DNA sequencing will face some additional hurdles, however, as Rant explains: "By design, the nanopores and their DNA origami gatekeepers allow small ions to pass through. For some conceivable applications, that becomes an unwanted leakage current that would have to be reduced, along with the magnitude of current fluctuations."
###
This research was supported by the German Excellence Initiative through the TUM Institute for Advanced Study, the Nano Initiative Munich, and the Center for Integrated Protein Science Munich; by the Collaborative Research Center SFB 863 of the German Research Foundation (DFG); and by a European Research Council Starting Grant to Hendrik Dietz. Ruoshan Wei was supported by the TUM Graduate School's Faculty Graduate Center of Physics.
Original publication:
DNA Origami Gatekeepers for Solid-State Nanopores
Ruoshan Wei, Thomas G. Martin, Ulrich Rant, and Hendrik Dietz
Angewandte Chemie International Edition on-line, April 4, 2012.
DOI: 10.1002/anie.201200688
Contact:
Prof. Hendrik Dietz
Department of Physics
Technische Universitt Mnchen
Am Coulombwall 4a, 85748 Garching, Germany
Tel.: +49 (0)89 289 11615
E-Mail: dietz@tum.de
Web: http://bionano.physik.tu-muenchen.de/
Dr. Ulrich Rant
Walter Schottky Institute
Technische Universitt Mnchen
Am Coulombwall 3, 85748 Garching, Germany
Tel.: +49 (0)89 289 11578
E-Mail: ulrich.rant@wsi.tum.de
Web: http://www.wsi.tum.de/Research/AbstreitergroupE24/ResearchAreas/BioNanostructures/tabid/136/Default.aspx
Technische Universitaet Muenchen (TUM) is one of Europe's leading universities. It has roughly 460 professors, 9000 academic and non-academic staff, and 31,000 students. It focuses on the engineering sciences, natural sciences, life sciences, medicine, and economic sciences. After winning numerous awards, it was selected as an "Elite University" in 2006 by the Science Council (Wissenschaftsrat) and the German Research Foundation (DFG). The university's global network includes an outpost with a research campus in Singapore. TUM is dedicated to the ideal of a top-level research-based entrepreneurial university. http://www.tum.de
[ | E-mail | Share ]
?
AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.
SANFORD, Florida (Reuters) - Neighborhood watch volunteer George Zimmerman apologized to the family of Trayvon Martin on Friday, stunning a rapt courtroom and a national television audience at a hearing in which the judge granted Zimmerman $150,000 bail on a charge of second-degree murder in the death of the unarmed black teenager.
Zimmerman's surprise appearance on the witness stand added an unexpected twist to a saga that has riveted the country, provoked civil rights protests nationwide and fired a national debate over guns, self-defense laws and race in America.
"I wanted to say I am sorry for the loss of your son," Zimmerman, 28, told Martin's parents, Tracy Martin and Sybrina Fulton, briefly looking toward them in the gallery.
"I did not know how old he was. I thought he was a little bit younger than I am. And I did not know if he was armed or not," Zimmerman, dressed in a suit and tie with shackles around his waist and wrists, said in his first public remarks on a shooting that has topped the news for weeks.
The parents of Martin, 17, were outraged Zimmerman was allowed to make what they considered a self-serving apology meant only to improve his chances of making bail, their lawyer said, calling the apology too late to be genuine.
Zimmerman's release from jail could take days while his family raises cash and prosecutors and defense lawyers work out an agreement to protect his privacy and safety. Prosecutors must also consider a defense request allowing him to leave the state.
Trayvon Martin's parents, who divorced in 1999, left the court stone-faced with arms locked, declining to answer questions from reporters.
"They are devastated" that Zimmerman might soon be free on bail, attorney Benjamin Crump told reporters, adding that Tracy Martin had tears in his eyes throughout the hearing.
"And it was devastating that he got to give a self-serving apology to help him get a bond," Crump said of Zimmerman. "They (the parents) were very outraged at that."
Though dramatic, Zimmerman's testimony could be used by prosecutors later in the case to impeach his credibility should they discover contradictions with previous statements to police.
Assistant State Attorney Bernie de la Rionda was limited to the apology in his cross-examination of Zimmerman and prohibited from delving into the facts of the case. But he made a point of locking Zimmerman into his statement that he also told police he "felt sorry for the family" about the death of Trayvon.
Zimmerman also testified he never changed his story in three separate statements to police.
ELECTRONIC MONITORING
Moments later, Circuit Judge Kenneth Lester Jr. set bail at $150,000. Zimmerman's defense lawyer had requested bail of no more than $15,000 and prosecutors, who had opposed his release, suggested bail of $1 million.
The judge set a number of conditions including electronic monitoring he said would prevent Zimmerman from being released on Friday. Zimmerman is also barred from further contact with the Martin family and cannot possess a gun or drink alcohol.
His release would be a "several day process," said defense attorney Mark O'Mara.
Earlier in the hearing, Zimmerman's wife, father and mother told the court Zimmerman was not a violent person and they would help ensure he does not flee if released on bail.
The three were allowed to testify by telephone from outside the court to protect their privacy in the face of hate mail and the intense emotions the case has generated.
"I've never known him to be violent at all, unless he was provoked, and then he would turn the other cheek," father Robert Zimmerman testified under defense questioning.
Zimmerman, a white and Hispanic neighborhood watch volunteer, shot and killed the unarmed Martin in what he said was self-defense following a confrontation that occurred as Martin was returning to his father's house in the gated community after buying candy from a convenience store.
Police initially declined to arrest Zimmerman, citing Florida's "Stand Your Ground" law, which allows people to use deadly force when they believe they are in danger of getting killed or suffering great bodily harm.
The lack of an arrest led thousands to march in rallies in Sanford and around the nation to demand Zimmerman's arrest and criticize investigators. The public outrage forced the Sanford police chief and regularly assigned prosecutor to step aside.
Gov. Rick Scott appointed Angela Corey as special prosecutor, and Corey charged Zimmerman on April 11.
(Reporting by Tom Brown, Barbara Liston and Chris Francescani; writing by Daniel Trotta; editing by Vicki Allen and Todd Eastham)
Turns out, not being eaten by a leopard seal is excellent motivation. It's what spurred penguins to develop an ingenious method of cutting down their drag—by wrapping themselves in a shawl of bubbles. More »
Intel's first Atom smartphone is now available, and it's Lava's Xolo X900. It has managed to outpace both Lenovo's K800 and Orange's Santa Clara, arriving on the Indian carrier next Monday. When we handled the Xolo X900 in Barcelona a few months ago, the 1.6 GHz Atom Z2460 processor seemed pleasantly responsive, although we were less enamoured with the phone's middling build quality. The four-inch 1024 x 600 display is accompanied by a one-megapixel camera on the front, plus a primary 8-megapixel shooter on the back capable of burst-shot photography. Despite its plastic build, Intel's new mobile offering won't come all that cheap; the Xolo X900 by Lava is priced off-contract at around 22,000 INR ($420). At the moment, we're still waiting to hear how Orange and Lenovo will price up their own Medfield-powered offerings -- both are expected to emerge in the next few months.
Just because you?re broke doesn?t mean you can?t assemble a comprehensive arsenal of consumer electronics. While the rich and fabulous enjoy gadgets for the elite 1 percent, the teeming, unwashed masses can explore hardware that occupies the lowest echelons of quality, specs and features.
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Public release date: 19-Apr-2012
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