ScienceDaily: Top Technology News |
- Proton dripping tests a fundamental force in nature
- Doppler effect found even at molecular level -- 169 years after its discovery
- Harnessing the energy of the Sun: New technique improves artificial photosynthesis
- Pairing quantum dots with fullerenes for nanoscale photovoltaics
- Scientists achieve guiding of electrons by purely electric fields
- Fundamental question on how life started solved: Supercomputer calculates carbon nucleus
| Proton dripping tests a fundamental force in nature Posted: 10 May 2011 01:18 PM PDT A recent discovery of an extremely exotic, short-lived nucleus called fluorine-14 in laboratory experiments may indicate that scientists are gaining a better grasp of the rules of strong interaction.  |
| Doppler effect found even at molecular level -- 169 years after its discovery Posted: 10 May 2011 10:41 AM PDT For the first time, scientists have experimentally shown a different version of the Doppler effect at a much, much smaller level -- the rotation of an individual molecule. Prior to this such an effect had been theorized, but it took a complex experiment with a synchrotron to prove it's for real.  |
| Harnessing the energy of the Sun: New technique improves artificial photosynthesis Posted: 10 May 2011 10:41 AM PDT Transforming solar energy into a usable form is a real challenge. One technique is to use semiconductors to store the energy as hydrogen. Unfortunately, the most efficient semiconductors are not the most stable. Scientists have just discovered that it is possible to protect the semiconductor with a uniform layer just a few nanometers thick.  |
| Pairing quantum dots with fullerenes for nanoscale photovoltaics Posted: 10 May 2011 08:12 AM PDT In a step toward engineering ever-smaller electronic devices, scientists have assembled nanoscale pairings of particles that show promise as miniaturized power sources. Composed of light-absorbing, colloidal quantum dots linked to carbon-based fullerene nanoparticles, these tiny two-particle systems can convert light to electricity in a precisely controlled way.  |
| Scientists achieve guiding of electrons by purely electric fields Posted: 10 May 2011 04:46 AM PDT The investigation of the properties of electrons plays a key role for the understanding of the fundamental laws of nature. However, being extremely small and quick, electrons are difficult to control. Physicists in Germany have now demonstrated efficient guiding of slow electrons by applying a microwave voltage to electrodes fabricated on a planar substrate. This new technique of electron guiding – which resembles the guiding of light waves in optical fibres – promises a variety of applications, from guided matter-wave experiments to non-invasive electron microscopy.  |
| Fundamental question on how life started solved: Supercomputer calculates carbon nucleus Posted: 09 May 2011 08:32 AM PDT For carbon, the basis of life, to be able to form in the stars, a certain state of the carbon nucleus plays an essential role. In cooperation with US colleagues, physicists in Germany have been able to calculate this legendary carbon nucleus, solving a problem that has kept science guessing for more than 50 years.  |
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