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.
Frissítve: 10 év 17 hét

NASA's first solar sail NanoSail-D deploys in low-Earth orbit

h, 01/24/2011 - 06:00
Engineers at NASA's Marshall Space Flight Center in Huntsville, Ala., have confirmed that the NanoSail-D nanosatellite deployed its 100-square-foot polymer sail in low-Earth orbit and is operating as planned. Actual deployment occurred on Jan. 20 at 10 p.m. EST and was confirmed with beacon packets data received from NanoSail-D and additional ground-based satellite tracking assets. NanoSail-D is designed to demonstrate deployment of a compact solar sail boom technology. This research demonstration could lead to further advances of this alternative solar sail propulsion and the critical need for new de-orbit technologies.

How to tame hammering water droplets

v, 01/23/2011 - 17:00
A water hammer can occur when a valve is suddenly opened or closed in a pipe carrying water or steam, causing a pressure wave to travel down the pipe with enough force that it can sometimes cause the pipes to burst. Now, new research shows that a similar effect takes places on a tiny scale whenever a droplet of water strikes a surface.

Stretching the truth: Biophysicists help unravel DNA stretching mystery

p, 01/21/2011 - 17:00
Using a new experimental test structure, biophysicists have unraveled part of a 15-year mystery in the mechanics of DNA -- just how the molecule manages to suddenly extend to almost twice its normal length.

Highly ordered artificial spin ice created using nanotechnology

p, 01/21/2011 - 17:00
Scientists have created artificial spin ice in a state of thermal equilibrium for the first time, allowing them to examine the precise configuration of this important nanomaterial.

Nanoscale rope: Complex nanomaterials that assemble themselves

cs, 01/20/2011 - 14:00
Scientists have coaxed polymers to braid themselves into wispy nanoscale ropes that approach the structural complexity of biological materials.

Secrets of mysterious metal hotspots uncovered by new single molecule imaging technique

cs, 01/20/2011 - 08:00
The secrets behind the mysterious nano-sized electromagnetic "hotspots" that appear on metal surfaces under a light are being revealed with the help of a BEAST. The results hold promise for solar energy and chemical sensing among other technologies.

Killer paper for next-generation food packaging

cs, 01/20/2011 - 02:00
Scientists are reporting development and successful lab tests of "killer paper," a material intended for use as a new food packaging material that helps preserve foods by fighting the bacteria that cause spoilage. The paper contains a coating of silver nanoparticles, which are powerful anti-bacterial agents.

Advance could speed use of genetic material RNA in nanotechnology

sze, 01/19/2011 - 23:00
Scientists are reporting an advance in overcoming a major barrier to the use of the genetic material RNA in nanotechnology -- the field that involves building machines thousands of times smaller than the width of a human hair and now is dominated by its cousin, DNA. Their findings could speed the use of RNA nanotechnology for treating disease.

Researcher warns of health risks with carbon nanotubes

sze, 01/19/2011 - 20:00
Carbon nanotubes, which are extremely small fibers used in many new light and strong materials, may present health risks if inhaled, in the worst case leading to cancer, according to new research.

Nanotech medicine to rebuild damaged parts of human body

sze, 01/19/2011 - 11:00
To rebuild damaged parts of a human body from scratch is a dream that has long fired human imagination, from Mary Shelley's Doctor Frankenstein to modern day surgeons. Now scientists have made a promising contribution to reconstructive surgery, thanks to an original multidisciplinary approach matching cutting-edge medicine to the latest developments in nanotechnology.

Oxidation mechanisms at gold nanoclusters unraveled

sze, 01/19/2011 - 11:00
Researchers believe that the puzzle of catalytic gold is now partially solved. Gold can catalyze an oxidation reaction by first oxidizing itself. New research evidence on gold-oxide phase at room temperature and atmospheric pressure help us to finally understand the oxidation mechanisms of catalytic gold nanoclusters in these conditions.

Breakthrough in converting heat waste to electricity: Automotive, chemical, brick and glass industries could benefit from discovery

k, 01/18/2011 - 23:00
Researchers have placed nanocrystals of strontium telluride into lead telluride, creating a material that can harness electricity from heat-generating items such as vehicle exhaust systems, industrial processes and equipment and sun light more efficiently than scientists have seen in the past.

Physicists observe exotic state in an unconventional superconductor

h, 01/17/2011 - 23:00
A new fractional vortex state observed in an unconventional superconductor may offer the first glimpse of an exotic state of matter predicted theoretically for more than 30 years. Physicists observed a new fractional vortex state in strontium ruthenium oxide. Such states may provide the basis for a novel form of quantum computing in which quantum information is encoded in the topological properties of a physical system.

Silicon microdevices show promise for detecting metastatic breast cancer cells

h, 01/17/2011 - 23:00
Research by engineers and cancer biologists indicates that using specific silicon microdevices might provide a new way to screen breast cancer cells' ability to metastasize.

The 'Spaser' heats up laser technology

h, 01/17/2011 - 17:00
While lasers have revolutionized medicine and telecommunications, their size limits their use in many industries. The "Spaser" is now being tested in prototype as a practical tool by research teams around the world and may overcome these limitations.

Fastest movie in the world recorded: Method to film nanostructures developed

p, 01/14/2011 - 20:00
Processes at a molecular level are minuscule and often extremely fast, and therefore difficult to capture in action. Scientists have taken a good step towards producing a "molecular movie". They can record two pictures at such a short time interval that it will soon be possible to observe molecules and nanostructures in real time.

Rotational motion in living cells: New tool for cell research may help unravel secrets of disease

p, 01/14/2011 - 14:00
Advancements in understanding rotational motion in living cells may help researchers shed light on the causes of deadly diseases, such as Alzheimer's, according to researchers.

Delivering a potent cancer drug with nanoparticles can lessen side effects

cs, 01/13/2011 - 05:00
Researchers have shown that they can deliver the cancer drug cisplatin much more effectively and safely in a form that has been encapsulated in a nanoparticle targeted to prostate tumor cells and is activated once it reaches its target.

Polymer membranes with molecular-sized channels that assemble themselves

sze, 01/12/2011 - 23:00
Researchers have developed a solution-based method for inducing polymer membranes with molecular-sized channels to assemble themselves. Fully compatible with commercial membrane-fabrication, this new technique is believed to be the first example of organic nanotubes fabricated into a functional membrane over macroscopic distances.

Coiled nanowires may hold key to stretchable electronics

sze, 01/12/2011 - 20:00
Researchers have created the first coils of silicon nanowire on a substrate that can be stretched to more than double their original length, moving us closer to incorporating stretchable electronic devices into clothing, implantable health-monitoring devices, and a host of other applications.