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Nanotube risk assessment
Nanotechnology / Bio & Medicine
Sep 18, 2009 |
3.8 / 5 (4) |
0
Italian scientists suggest that we need a much more detailed toxicological approach to hazard assessment before judgement regarding the long-term safety of carbon nanotubes can be made. They outline their results in the International Jo ...
Scientists create custom 3D structures with 'DNA origami'
May 20, 2009 |
4.2 / 5 (6) |
0
BOSTON--By combining the art of origami with nanotechnology, Dana-Farber Cancer Institute researchers have folded sheets of DNA into multilayered objects with dimensions thousands of times smaller than the thickness of a ...
Measuring conductance of carbon nanotubes, one by one
Dec 15, 2008 |
4.5 / 5 (11) |
1
(PhysOrg.com) -- A single batch of carbon nanotubes -- molecular carbon cylinders that may one day revolutionize electronics engineering -- often includes more than 100 types of tubes, each with different ...
World's smallest semiconductor laser heralds new era in optical science
Aug 30, 2009 |
4.8 / 5 (25) |
1
(PhysOrg.com) -- Researchers at the University of California, Berkeley, have reached a new milestone in laser physics by creating the world's smallest semiconductor laser, capable of generating visible light ...
Sewing DNA thread with lasers, hooks and microbobbins
Jul 10, 2008 |
4.9 / 5 (19) |
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(PhysOrg.com) -- Japanese scientists have made a micro-sized sewing machine to sew long threads of DNA into shape. The work published in the Royal Society of Chemistry journal Lab on a Chip demonstrates a uniq ...
Laser pulses control single electrons in complex molecules
Sep 01, 2009 |
5 / 5 (7) |
1
Predatory fish are well aware of the problem: In a swarm of small fish it is hard to isolate prey. A similar situation can be found in the microcosm of atoms and molecules, whose behavior is influenced by "swarms" of electrons. ...
New study confirms exotic electric properties of graphene
Nanotechnology / Nanomaterials
Nov 17, 2009 |
4.8 / 5 (23) |
1
(PhysOrg.com) -- First, it was the soccer-ball-shaped molecules dubbed buckyballs. Then it was the cylindrically shaped nanotubes. Now, the hottest new material in physics and nanotechnology is graphene: ...
New Organic Gold-Nanoparticle Memory Device
Feb 14, 2007 |
4 / 5 (48) |
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Researchers have developed a new memory device that uses gold nanoparticles and the organic semiconducting compound pentacene. This novel pairing is a key step forward in the drive to develop organic "plastic" ...
Nano World: First solar-powered nano motor
Jan 24, 2006 |
4.2 / 5 (83) |
1
An international team of scientists has created the first molecular motor powered solely by sunlight. By acting like pistons that move back and forth, these motors, which are only nanometers or billionths of ...
Discovery brings organic solar cells a step closer
Jan 15, 2009 |
4.3 / 5 (11) |
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Inexpensive solar cells, vastly improved medical imaging techniques and lighter and more flexible television screens are among the potential applications envisioned for organic electronics.
Linear arrays of nanotubes offer path to high-performance electronics
Mar 25, 2007 |
4.4 / 5 (24) |
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Despite the attractive electrical properties and physical features of single-walled carbon nanotubes, incorporating them into scalable integrated circuits has proven to be a challenge because of difficulties in manipulating ...
New graphene transistor promises life after death of silicon chip (Update)
Nanotechnology / Nanomaterials
Feb 28, 2007 |
4.5 / 5 (117) |
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Researchers have used the world's thinnest material to create the world's smallest transistor – a breakthrough that could spark the development of a new type of super-fast computer chip.
Researchers enlist DNA to bring carbon nanotubes' promise closer to reality
Nanotechnology / Bio & Medicine
Jul 08, 2009 |
5 / 5 (3) |
1
A team of researchers from DuPont and Lehigh University has reported a breakthrough in the quest to produce carbon nanotubes (CNTs) that are suitable for use in electronics, medicine and other applications.
Ultrafast laser spectrometer measures heat flow through molecules
Aug 09, 2007 |
4.4 / 5 (8) |
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Global warming isn’t the only heat scientists are feeling. Another area in which heat flow is becoming crucial is the field of molecular electronics, where long-chain molecules attached to tiny electrodes are used to transport ...
Fast molecular rearrangements hold key to plastic's toughness
Nov 27, 2008 |
4.5 / 5 (2) |
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(PhysOrg.com) -- Plastics are everywhere in our modern world, largely due to properties that render the materials tough and durable, but lightweight and easily workable. One of their most useful qualities, ...
