ScienceDaily Nanotechnology hírei

Tartalom átvétel ScienceDaily: Nanotechnology News
Nanotechnology news. From nanoscience to nanotechnology applications such as nanotechnology in medicine, read the latest news from leading research institutes.
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Creating 'Living' Buildings

sze, 12/08/2010 - 11:00
Researchers are poised to use ethical synthetic biology to create 'living' materials that could be used to clad buildings and help combat the effects of climate change.

Ultra-thin solar blind extreme ultraviolet imager developed

sze, 12/08/2010 - 06:00
Researchers have developed an ultra-thin hybrid AlGaN-on-Si-based extreme ultraviolet (EUV) imager with only 10µm pixel-to-pixel pitch. The wide-bandgap material (AlGaN) provides insensitivity to visible wavelengths and enhanced UV radiation hardness compared to silicon. Backside illumination in a hybrid design was used to achieve a very small pitch-to-pitch (10µm only). The novel imager shows an excellent detection down to a wavelength of 1nm.

Using new materials to make more reliable nanoelectromechanical systems

k, 12/07/2010 - 20:00
Researchers have found a way to dramatically improve the reliability of carbon nanotube-based nanoelectromechanical systems.

Light touch brightens nanotubes: Scientists find a little ozone goes a long way for fluorescence

h, 12/06/2010 - 14:00
Researchers have found that adding tiny amounts of ozone to batches of single-walled carbon nanotubes and exposing them to light decorates all the nanotubes with oxygen atoms and systematically changes their near-infrared fluorescence.

Fitting a biological nanopore into an artificial one, new ways to analyze DNA

h, 12/06/2010 - 11:00
Researchers a have announced a new type of nanopore device that could help in developing fast and cheap genetic analysis. They report on a novel method that combines artificial and biological materials to result in a tiny hole on a chip, which is able to measure and analyze single DNA molecules.

Gold and silver nano baubles

v, 12/05/2010 - 20:00
They might just be the smallest Christmas tree decorations ever. Tiny spherical particles of gold and silver that are more than 100 million times smaller than the gold and silver baubles used to decorate seasonal fir trees have been synthesized.

Color-changing 'blast badge' detects exposure to explosive shock waves

v, 12/05/2010 - 02:00
Mimicking the reflective iridescence of a butterfly's wing, investigators have developed a color-changing patch that could be worn on soldiers' helmets and uniforms to indicate the strength of exposure to blasts from explosives in the field. Future studies aim to calibrate the color change to the intensity of exposure to provide an immediate read on the potential harm to the brain and the subsequent need for medical intervention.

New high-performance fiber created

p, 12/03/2010 - 23:00
Researchers have nanoengineered a new kind of fiber that could be tougher than Kevlar.

Blacker than black: NASA engineers developing material to help gather hard-to-obtain scientific measurements

p, 12/03/2010 - 17:00
Black is black, right? Not so, according to a team of NASA engineers now developing a blacker-than pitch material that will help scientists gather hard-to-obtain scientific measurements or observe currently unseen astronomical objects, like Earth-sized planets in orbit around other stars.

Three-dimensional chemistry demonstrated by grinding powder

p, 12/03/2010 - 11:00
During the normal grinding of powders in a mortar, the powders can enter into chemical reactions with each other. This phenomenon has been known for years but only now it has become possible to transform in this way three-dimensional clusters of certain chemical compounds into other, also three-dimensional, clusters. The spectacularly easy reaction was conducted by scientists in Poland. The discovery was brought about by the development of a new method of creation of unique compounds that are precursors of nano zinc oxide – a material used, in particular, in modern electronics.

Manufacturing 'made to measure' atomic-scale electrodes

cs, 12/02/2010 - 11:00
It is possible to determine and control the number of atoms in contact between a molecule and a metal electrode of copper, at the same time as the electric current passing through the union being recorded.

Engineers discover graphene's weakness

cs, 12/02/2010 - 02:00
Using quantum theory and supercomputers, scientists have revealed the mechanisms of mechanical failure of pure graphene under tensile stress. They shows that, when graphene is subject to strain equal in all directions, it morphs into a new structure which is mechanically unstable.

Nano-diamond qubits and photonic crystals: Milestone reached on the path to integrated quantum technology

sze, 12/01/2010 - 20:00
Researchers in Germany have successfully fabricated a rudimentary quantum computing hybrid system using electronic excitations in nano-diamonds as qubits and optical nanostructures, so-called photonic crystals with tailored optical properties. This architecture may allow integration of multi-qubit systems on a single micrometer-sized chip for future quantum computers.

Measuring the temperature of nanoparticles

sze, 12/01/2010 - 17:00
Scientists have developed a new technique for probing the temperature rise in the vicinity of nanoparticles using fluorescent quantum dots as temperature sensors. The results may have implications for the medical use of nanoparticles.

Cinnamon can replace harmful chemicals used to create nanoparticles

k, 11/30/2010 - 23:00
Scientists have found a method that could replace nearly all of the toxic chemicals required to make gold nanoparticles. The missing ingredient can be found in nearly every kitchen's spice cabinet -- cinnamon.

To be or not to be a pair: Giant molecules in a quantum superposition

h, 11/29/2010 - 11:00
In human relationships, the question of being a couple or not has a yes-or-no answer: either one is a couple or not. Quantum physics offers an interesting alternative. There, the couples are pairs of atoms that are held together by binding forces to form molecules. Quantum mechanics allows another loophole: a superpostion of free and bound state, where the two atoms are bound and free at the same time. Although this is impossible in our classical world, it is a well known property for quantum mechanical states. Such superpositions have now been observed for weakly bound ultralong-range molecules.

Quartz crystal microbalances enable new microscale analytic technique

v, 11/28/2010 - 14:00
A new chemical analysis technique uses the shifting ultrasonic pitch of a small quartz crystal to test the purity of only a few micrograms of material.

Short, on-chip light pulses will enable ultrafast data transfer within computers

cs, 11/25/2010 - 14:00
Electrical engineers generated short, powerful light pulses on a chip -- an important step toward the optical interconnects that will likely replace the copper wires that carry information between chips within today's computers. Electrical engineers recently developed the first ultra compact, low power pulse compressor on a silicon chip to be described in the scientific literature.

Scientists crack materials mystery in vanadium dioxide

cs, 11/25/2010 - 08:00
A systematic study of phase changes in vanadium dioxide has solved a mystery that has puzzled scientists for decades.

Self-assembly of nano-rotors

cs, 11/25/2010 - 02:00
Scientists have managed to direct the self-assembly of rod-shaped molecules into rotors only few nanometers in size. The tiny systems serve the study of forces that act on molecules on surfaces and in cage-like structures.