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Nanotechnology

INSIDER : Photonics/Optics
Engineers Invent Method to Control Light Propagation in Waveguides

A team of Columbia Engineering researchers, led by Applied Physics Assistant Professor Nanfang Yu, has invented a method to control light propagating in confined pathways, or waveguides, with high efficiency by using nano-antennas. To demonstrate this technique, they built...

Articles : Manufacturing & Prototyping
Spinoff: Wireless Platform Integrates Sensors with Smartphones

In 2007, when the Department of Homeland Security (DHS) issued a call for a sensor that could equip a smartphone with the ability to detect dangerous gases and chemicals, Ames Research Center scientist Jing Li had a ready response. Four years earlier, she led a team that wrote a...

News : RF & Microwave Electronics
Tiny Graphene Radios May Lead to Internet of Nano-Things

For wireless communication, we’re all stuck on the same traffic-clogged highway — it’s a section of the electromagnetic spectrum known as radio waves. Advancements have made the...

News : Electronics & Computers
Supersonic Spray Yields New Nanomaterial for Bendable, Wearable Electronics

A new, ultrathin film that is both transparent and highly conductive to electric current has been produced by a cheap and simple method devised by an international...

News : Medical
Microwaves Target Deep Tumors

Physicists at the University of Texas at Arlington have shown that using microwaves to activate photosensitive nanoparticles produces tissue-heating effects that ultimately lead to cell death within solid tumors. The new concept, which combines microwaves with photodynamic therapy, opens new avenues for targeting...

News : Electronics & Computers
Scientists Find Twisting 3-D Electron Raceway in Nanoscale Crystal Slices

Researchers have created an exotic 3-D racetrack for electrons in ultrathin slices of a nanomaterial they fabricated at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab). The international team of scientists from Berkeley Lab, UC Berkeley,...

News : Sensors/Data Acquisition
Glucose-Sensing Contact Lens Enables Noninvasive Testing

Blood testing is the standard option for checking glucose levels, but a new technology could allow noninvasive testing via a contact lens that samples glucose levels in tears. Glucose is a good target for optical sensing, and especially for what is known as surface-enhanced Raman...

News : Manufacturing & Prototyping
Nanoscale Sculpturing of Metals Can Improve Biocompatibility for Implants

How metals can be used depends particularly on the characteristics of their surfaces. A research team at Kiel University has discovered how they can change the surface properties without affecting the mechanical stability of the metals or changing the metal characteristics...

News : Aerospace
Morphing Nanotubes into Tougher Carbon for Aerospace

Rice University materials scientists are making nanodiamonds and other forms of carbon by smashing nanotubes against a target at high speeds. The process will enrich the knowledge of engineers who design structures that resist damage from high-speed impacts. The diamonds are the result of a...

News : Nanotechnology
Nanomaterial Could Speed Up Electric Vehicle Charging

A new material could one day speed up the charging process of electric cars and help increase their driving range. Researchers have combined a covalent organic framework (COF) – a strong, stiff polymer with an abundance of tiny pores suitable for storing energy – with a very conductive...

News : Materials
Advanced Spray-On Material Repels Water

A new spray-on material from engineers at The Australian National University (ANU) offers a more robust waterproofing capability than previous coatings. Combining two plastics, one tough and one flexible, the invention could eventually be used to protect mobile phones, de-ice airplane parts, or keep boat...

News : Materials
Plastic-Based Textile Leads to 'Cool' Clothes

A low-cost, plastic-based textile from Stanford University engineers could cool the body efficiently when woven into clothing.

News : Nanotechnology
Molecular Switch for Controlling Color

A collaboration of researchers from Kumamoto, Yamaguchi, and Osaka Universities in Japan have discovered a new method of drastically changing the color and fluorescence of a particular compound using only oxygen (O2) and hydrogen (H2) gases. The fully reversible reaction is environmentally friendly since it...

News : Nanotechnology
Molecular Electronics Could Someday Replace Silicon Chips

Technion researchers have developed a method for growing carbon nanotubes that could lead to the day when molecular electronics replace the ubiquitous silicon chip as the building block of electronics.

News : Electronics & Computers
Engineered “Sand” May Help Cool Electronic Devices

Baratunde Cola would like to put sand into your computer. Not beach sand, but silicon dioxide nanoparticles coated with a high dielectric constant polymer to inexpensively provide improved cooling for increasingly power-hungry electronic devices.

News : Imaging
Optics Breakthrough Could Revamp Night Vision

A breakthrough by an Australian collaboration of researchers could make infrared technology easy-to-use and cheap, potentially saving millions of dollars in defense and other areas using sensing devices, and boosting applications of technology to a host of new areas, such as agriculture. Infra-red...

News : Nanotechnology
Wild Mushrooms Support New Battery Anodes

Researchers at Purdue University have created electrodes from a species of wild fungus called Tyromyces fissilis. Carbon fibers derived from the sustainable source have been shown to outperform conventional graphite electrodes for lithium-ion batteries.

News : Mechanical & Fluid Systems
Microfluidics is Key to Mass-Producing Nanomaterials

Nanoparticles can be found in everything from drug-delivery formulations to high-definition televisions. They’re also expensive and a pain to make. Researchers at USC have created a new way to manufacture nanoparticles that will transform the process from a painstaking, batch-by-batch...

News : Imaging
Researchers Create Super-Thin Lens

Scientists at Australian National University have created a lens that measures one two-thousandth the thickness of human hair. The technology will support the development of flexible computer displays and miniature cameras.

News : Energy
Researchers Create Evaporation-Powered Motor

Biological systems are known to convert energy generated from the evaporation of water confined within nanoscale compartments into muscle-like mechanical work in response to changes in environmental humidity. Recently, scientists designed shape-changing engineered composites of bacterial spores and...

News : Nanotechnology
Nano-Submarine Motors Powered by Light

Each of the single-molecule, 244-atom submersibles built at Rice University has a motor powered by ultraviolet light. With each full revolution, the motor’s tail-like propeller moves the sub forward 18 nanometers. And with the motors running at more than a million RPM, that translates into speed....

News : Nanotechnology
Graphene-Based Inks Enable High-Speed Manufacturing of Printed Electronics

A low-cost, high-speed method for printing graphene inks using a conventional roll-to-roll printing process, like that used to print newspapers, could open up a wide range of practical applications, including inexpensive printed electronics, intelligent packaging, and...

News : Nanotechnology
Sponge-Like Material Soaks Up Oil Spills

In hopes of limiting the disastrous environmental effects of massive oil spills, scientists from Drexel University and Deakin University, in Australia, have teamed up to manufacture and test a new material. The boron nitride nanosheet absorbs up to 33 times its weight in oils and organic solvents — a...

News : Motion Control
Tiny Carbon-Capturing Motors Could Clean up Carbon Dioxide Pollution

Machines that are much smaller than the width of a human hair could one day help clean up carbon dioxide pollution in the oceans. Nanoengineers at the University of California, San Diego have designed enzyme-functionalized micromotors that rapidly zoom around in water, remove...

News : Nanotechnology
Single-Molecule Nanosubmarines Powered by Light

Rice University scientists have created light-driven, single-molecule submersibles that contain just 244 atoms. The motors of the "nanosubmarines" run at more than a million RPM, and the sub's top speed amounts to less than 1 inch per second.

News : Electronics & Computers
Nanotechnology Increases Storage Capability of Dielectric Capacitors

Capacitors are key components of portable electronics, computing systems, and electric vehicles. In contrast to batteries, which offer high storage capacity, but slow delivery of energy, capacitors provide fast delivery, but poor storage capacity. A great deal of effort has...

News : Motion Control
Nanoclutch Transmits Torque at Small Scales

When driving a car, the clutch mechanically carries the torque produced by the engine to the chassis of the vehicle – a coupling that has long been tested and optimized in such macroscopic machines, giving us highly efficient engines. At microscopic length scales, different physics need to be...

News : Motion Control
New Method Builds Microscopic Robots of Complex Shapes

Nanoengineers at the University of California, San Diego used an innovative 3D printing technology they developed to manufacture multipurpose fish-shaped microrobots that swim around efficiently in liquids, are chemically powered by hydrogen peroxide, and magnetically controlled.

News : Software
What Makes Quantum Dots Blink?

Quantum dots are nanoparticles of semiconductor that can be tuned to glow in a rainbow of colors. Since their discovery in the 1980s, these remarkable nanoparticles have held out tantalizing prospects for all kinds of new technologies, ranging from paint-on lighting materials and solar cells to quantum computer...

News : Energy
New Nanowires Absorb Light

Harvard University scientists have created nanowires with new useful properties. The wire not only absorbs light at specific wavelengths, but also light from other parts of the spectrum. The technology could have applications in areas ranging from consumer electronics to solar panels.