'Writing' Patterns on Carbon Nanotubes With Polymer Chains
Nanotechnology / Nanomaterials
May 19, 2009 |
4.4 / 5 (11) |
3
(PhysOrg.com) -- Carbon nanotubes are at the center of the nanoelectronics research movement, with scientists making great progress toward getting nanotube-based electronic devices into the hands of consumers. ...
Is random lasing possible with a cold atom cloud?
May 18, 2009 |
4 / 5 (6) |
4
(PhysOrg.com) -- Random lasing, Robin Kaiser tells PhysOrg.com, is like standard lasing, with a little bit of a twist: “You don’t know the direction the photons will go, as you do with a more standard laser. This is becaus ...
Radiation Review: Some People May be 'Allergic' to Cell Phones, Computers
May 15, 2009 |
3.4 / 5 (38) |
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(PhysOrg.com) -- How exactly does the radiation from electromagnetic fields (EMF) affect the human body? Is it possible that cell phones, computer monitors, TVs, and other electronic devices - which operate ...
The Origin of Artificial Species: Creating Artificial Personalities
Technology / Computer Sciences
May 14, 2009 |
3.8 / 5 (10) |
6
(PhysOrg.com) -- Does your robot seem to be acting a bit neurotic? Maybe it's just their personality. Recently, a team of researchers has designed computer-coded genomes for artificial creatures in which a ...
Ion trap quantum computing
May 12, 2009 |
4.5 / 5 (11) |
1
(PhysOrg.com) -- “Right now, classical computers are faster than quantum computers,” René Stock tells PhysOrg.com. “The goal of quantum computing is to eventually speed up the time scale of solving certain important proble ...
New Pattern Found in Prime Numbers
May 08, 2009 |
4.5 / 5 (83) |
41
(PhysOrg.com) -- Prime numbers have intrigued curious thinkers for centuries. On one hand, prime numbers seem to be randomly distributed among the natural numbers with no other law than that of chance. But ...
Post-Quantum Correlations: Exploring the Limits of Quantum Nonlocality
May 07, 2009 |
4 / 5 (22) |
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(PhysOrg.com) -- When it comes to nonlocal correlations, some correlations are more nonlocal than others. As the subject of study for several decades, nonlocal correlations (for example, quantum entanglement) ...
Physicists Detect Single-Electron Tunneling with Quantum Dots
May 06, 2009 |
3.9 / 5 (17) |
1
(PhysOrg.com) -- Detecting the coherent motion of a single electron is a challenge, for the simple reason of scale: the timescale of the coherent motion of a single-electron wave function is in the picosecond ...
Stretchable Nanotube Films May Advance Medical Electronics (Update)
May 04, 2009 |
3.6 / 5 (10) |
1
(PhysOrg.com) -- One of the issues hindering the development of medical electronic devices capable of being implanted in the human body is the lack of suitable materials. Most semiconducting materials are ...
Achieving optimal efficiencies for nanoengines
Apr 29, 2009 |
3.8 / 5 (8) |
1
(PhysOrg.com) -- "There's a lot of recent interest in understanding the functioning and optimal performance of small systems," Katja Lindenberg tells PhysOrg.com. Lindenberg is a scientist in the Department of Chemistry and Bi ...
Study of 'Persistent Currents' Finally Verifies Theory
Apr 28, 2009 |
4.7 / 5 (23) |
6
(PhysOrg.com) -- Approximately 20 years ago, scientists discovered that is is possible for an electric current to flow endlessly in a ring made of a normal metal. One might think that such an 'old' finding ...
Bouncing atoms may be the key to the future of gravimetry
Apr 27, 2009 |
4.4 / 5 (14) |
1
(PhysOrg.com) -- When studying cold atoms, scientists often use magnetic or optical traps to keep the atoms in place. However, in some cases experimentalists want to study free atoms, avoiding the effects of a trap. "One ...
Scientists Fabricate Organic Transistor with Improved Performance
Apr 24, 2009 |
4.7 / 5 (12) |
2
(PhysOrg.com) -- Organic semiconductors are promising building blocks for many devices, from LEDs to transistors, offering potential advantages such as cost-effectiveness, flexibility, and high performance. ...
Reversals of Earth's Magnetic Field Explained by Small Core Fluctuations
Apr 23, 2009 |
4.7 / 5 (41) |
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(PhysOrg.com) -- Based on studies of old volcanic basalt, scientists know that the Earth’s magnetic field reverses at irregular intervals, ranging from tens of thousands to millions of years. Volcanic basalt ...
New Research Promises Better Atomic Clocks
Apr 22, 2009 |
4.7 / 5 (9) |
1
(PhysOrg.com) -- The most accurate timekeepers in the world are atomic clocks, which tell time based on the absorption of a very specific and unchanging microwave frequency, which induces electrons in an atom to “jump” from ...
