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News tagged with nano

Motorized roller could mass-produce graphene-based devices

(PhysOrg.com) -- Finding a simple, scalable way to pattern graphene for future electronics applications is one of the biggest challenges facing graphene researchers. While lithography has been widely used ...

Nanotechnology / Nanophysics

created Feb 23, 2012 | popularity 5 / 5 (19) | comments 2 | with audio podcast feature

Engineers build first sub-10-nm carbon nanotube transistor

(PhysOrg.com) -- Engineers have built the first carbon nanotube (CNT) transistor with a channel length below 10 nm, a size that is considered a requirement for computing technology in the next decade. Not ...

Nanotechnology / Nanophysics

created Feb 01, 2012 | popularity 4.9 / 5 (36) | comments 32 | with audio podcast feature

Scientists design solar cells that exceed the conventional light-trapping limit

(PhysOrg.com) -- The best performing solar cells are those that are thick enough to absorb light from the entire solar spectrum, while the cheapest solar cells are thin ones, since they require less, and potentially ...

Nanotechnology / Nanophysics

created Jan 20, 2012 | popularity 4.7 / 5 (37) | comments 27 | with audio podcast feature

Researchers prepare cheap quantum dot solar paint

(PhysOrg.com) -- It typically takes a day or two to prepare quantum dot solar cells in the conventional multifilm architecture. Now a team of researchers is reducing the preparation time of quantum dot solar ...

Nanotechnology / Nanophysics

created Dec 16, 2011 | popularity 4.6 / 5 (23) | comments 15 | with audio podcast feature

Printed CNT transistor circuits may lead to cheaper OLED displays

(PhysOrg.com) -- While flexible OLED displays have begun appearing in some cell phones, the technology is still too expensive to be widely used in consumer electronics. In one of the latest attempts to enable ...

Nanotechnology / Nanophysics

created Dec 06, 2011 | popularity 4.9 / 5 (13) | comments 6 | with audio podcast feature

Plasmonic device converts light into electricity

(PhysOrg.com) -- While the most common device for converting light into electricity may be photovoltaic (PV) solar cells, a variety of other devices can perform the same light-to-electricity conversion, such ...

Nanotechnology / Nanophysics

created Nov 09, 2011 | popularity 4.6 / 5 (13) | comments 3 | with audio podcast feature

Nanowire lens can reconfigure its imaging properties

(PhysOrg.com) -- By taking advantage of the unique optical properties of nanoscale materials, researchers have designed a lens made of nanowires that can reconfigure its imaging properties without any electronic ...

Nanotechnology / Nanophysics

created Oct 11, 2011 | popularity 5 / 5 (11) | comments 3 | with audio podcast feature

Organic electronic devices could be printed on ordinary CDs and DVDs

(PhysOrg.com) -- Organic electronics – those that involve carbon-based conductors instead of the traditional copper or silicon – have a number of advantages over metal electronics, including their ...

Nanotechnology / Nanophysics

created Sep 02, 2011 | popularity 5 / 5 (16) | comments 5 | with audio podcast feature

Microscopy, quantum-style: Atomic stacks imaged in real space

(PhysOrg.com) -- Since the first optical microscopes appeared in the late 1600s – an exact date and original inventor elude precise identification – microscopy has evolved dramatically. Scanning ...

Nanotechnology / Nanophysics

created Aug 31, 2011 | popularity 5 / 5 (6) | comments 1 | with audio podcast feature

Energy storage device fabricated on a nanowire array

In a vivid demonstration of the progress being made in miniaturizing energy storage devices, a team of engineers from Rice University in Houston, Texas, has fabricated an energy storage device where all essential ...

Nanotechnology / Nanophysics

created Aug 01, 2011 | popularity 4.4 / 5 (14) | comments 0 | with audio podcast feature

Rechargeable lithium-sulfur batteries get a boost from graphene

(PhysOrg.com) -- By wrapping tiny sulfur particles in graphene sheets, researchers from Stanford University have synthesized a promising cathode material for rechargeable lithium-sulfur batteries that could ...

Nanotechnology / Nanomaterials

created Jul 13, 2011 | popularity 4.2 / 5 (22) | comments 53 | with audio podcast feature

Biomolecular computer can autonomously sense multiple signs of disease

(PhysOrg.com) -- In the future, nano-sized computers implanted in the human body could autonomously scan for disease indicators, diagnose diseases, and control the release of the appropriate drugs. Although ...

Nanotechnology / Bio & Medicine

created Jul 06, 2011 | popularity 3.6 / 5 (8) | comments 5 | with audio podcast feature

Invisibility carpet cloak can hide objects from visible light

(PhysOrg.com) -- Most of the invisibility cloaks that have been demonstrated to date conceal objects at frequencies that are not detectable by the human eye. Designing invisibility cloaks that can conceal ...

Physics / General Physics

created Jun 15, 2011 | popularity 5 / 5 (20) | comments 22 | with audio podcast feature

Quantum dots with built-in charge boost solar cell efficiency by 50%

(PhysOrg.com) -- For the past few years, researchers have been using quantum dots to increase the light absorption and overall efficiency of solar cells. Now, researchers have taken a step further, demonstrating ...

Nanotechnology / Nanophysics

created May 13, 2011 | popularity 4.9 / 5 (21) | comments 13 | with audio podcast feature

Transistor performance improves due to quantum confinement effects

(PhysOrg.com) -- Manufacturing on the nanoscale has come a long way since Feynman’s visions of nanotechnology more than 50 years ago. Since then, studies have demonstrated how low-dimensional structures, ...

Nanotechnology / Nanophysics

created Mar 21, 2011 | popularity 4.6 / 5 (23) | comments 1 | with audio podcast feature

Nanotechnology

Nanotechnology (sometimes shortened to "nanotech") is the study of manipulating matter on an atomic and molecular scale. Generally, nanotechnology deals with developing materials, devices, or other structures possessing at least one dimension sized from 1 to 100 nanometres. Quantum mechanical effects are important at this quantum-realm scale.

Nanotechnology is very diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly, from developing new materials with dimensions on the nanoscale to investigating whether we can directly control matter on the atomic scale. Nanotechnology entails the application of fields of science as diverse as surface science, organic chemistry, molecular biology, semiconductor physics, microfabrication, etc.

There is much debate on the future implications of nanotechnology. Nanotechnology may be able to create many new materials and devices with a vast range of applications, such as in medicine, electronics, biomaterials and energy production. On the other hand, nanotechnology raises many of the same issues as any new technology, including concerns about the toxicity and environmental impact of nanomaterials, and their potential effects on global economics, as well as speculation about various doomsday scenarios. These concerns have led to a debate among advocacy groups and governments on whether special regulation of nanotechnology is warranted.

For more information about Nanotechnology, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.