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Tiny laser sensor heightens bomb detection sensitivity

24-07-2014

New technology under development at the University of California, Berkeley, could soon give bomb-sniffing dogs some serious competition. A team of researchers led by Xiang Zhang, UC Berkeley professor of mechanical engineering, has found a way to dramatically increase the sensitivity of a ...

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Highly charged ions

Multiply-ionized atoms for clocks, qubits, and constants

24-07-2014

The world is mostly neutral. That is, most of the atoms in our environment are electrically neutral. The number of electrons in the outer parts of atoms equals the number of protons at the centers of atoms. As one or more electrons are plucked away from the atoms, the remaining electrons feel a ...

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Rice nanophotonics experts create powerful molecular sensor

Sensor amplifies optical signature of single molecules about 100 billion times

23-07-2014

Nanophotonics experts at Rice University have created a unique sensor that amplifies the optical signature of molecules by about 100 billion times. Newly published tests found the device could accurately identify the composition and structure of individual molecules containing fewer than 20 ...

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Smallest Swiss cross - Made of 20 single atoms

23-07-2014

The manipulation of atoms has reached a new level: Together with teams from Finland and Japan, physicists from the University of Basel were able to place 20 single atoms on a fully insulated surface at room temperature to form the smallest "Swiss cross", thus taking a big step towards next ...

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When is a molecule a molecule?

Scientists watch fast electron jumps in exploding molecules

22-07-2014

Using ultra-short X-ray flashes, an international team of researchers watched electrons jumping between the fragments of exploding molecules. The study reveals up to what distance a charge transfer between the two molecular fragments can occur, marking the limit of the molecular regime. The ...

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'Nanocamera' takes pictures at distances smaller than light's own wavelength

How is it possible to record optically encoded information for distances smaller than the wavelength of light?

22-07-2014

Researchers at the University of Illinois at Urbana-Champaign have demonstrated that an array of novel gold, pillar-bowtie nanoantennas (pBNAs) can be used like traditional photographic film to record light for distances that are much smaller than the wavelength of light (for example, distances ...

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Fundamental chemistry findings could help extend Moore's Law

17-07-2014

Over the years, computer chips have gotten smaller thanks to advances in materials science and manufacturing technologies. This march of progress, the doubling of transistors on a microprocessor roughly every two years, is called Moore's Law. But there's one component of the chip-making process ...

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NMR under pressure: Reproducing deep-Earth chemistry

16-07-2014

A new pressure cell invented by UC Davis researchers makes it possible to simulate chemical reactions deep in the Earth's crust. The cell allows researchers to perform nuclear magnetic resonance (NMR) measurements on as little as 10 microliters of liquid at pressures up to 20 kiloBar. "NMR is our ...

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Getting a charge out of water droplets

Water condensing and jumping from a superhydrophobic surface can be harnessed to produce electricity

16-07-2014

Last year, MIT researchers discovered that when water droplets spontaneously jump away from superhydrophobic surfaces during condensation, they can gain electric charge in the process. Now, the same team has demonstrated that this process can generate small amounts of electricity that might be ...

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Researchers discover boron 'buckyball'

16-07-2014

The discovery 30 years ago of soccer-ball-shaped carbon molecules called buckyballs helped to spur an explosion of nanotechnology research. Now, there appears to be a new ball on the pitch. Researchers from Brown University, Shanxi University and Tsinghua University in China have shown that a ...

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