Nano planet

3D plasmonic antenna capable of focusing light into few nanometers

Physorg.com - 25 июня, 2015 - 14:20
Professors Myung-Ki Kim and Yong-Hee Lee of the Physics Department at KAIST and their research teams developed a 3D gap-plasmon antenna which can focus light into a few nanometers wide space. Their research findings were published in the June 10th issue of Nano Letters.
Категории: Nano planet

Engineered particles produce toxins deadly to targeted bacteria

Physorg.com - 25 июня, 2015 - 13:18
The global rise in antibiotic resistance is a growing threat to public health, damaging our ability to fight deadly infections such as tuberculosis.
Категории: Nano planet

Towards graphene biosensors

Physorg.com - 24 июня, 2015 - 19:26
For the first time, a team of scientists has succeeded in precisely measuring and controlling the thickness of an organic compound that has been bound to a graphene layer. This might enable graphene to be used as a sensitive detector for biological molecules in the future.
Категории: Nano planet

Nanowires could be the LEDs of the future

Physorg.com - 24 июня, 2015 - 17:22
The latest research from the Niels Bohr Institute shows that LEDs made from nanowires will use less energy and provide better light. The researchers studied nanowires using X-ray microscopy and with this method they can pinpoint exactly how the nanowire should be designed to give the best properties. The results are published in the scientific journal, ACS Nano.
Категории: Nano planet

Researchers detect spin precession in silicon nanowires

Physorg.com - 24 июня, 2015 - 15:10
Scientists at the U.S. Naval Research Laboratory (NRL) have reported the first observation of spin precession of spin currents flowing in a silicon nanowire (NW) transport channel, and determined spin lifetimes and corresponding spin diffusion lengths in these nanoscale spintronic devices. The spin currents were electrically injected and detected using ferromagnetic metal contacts with a tunnel barrier consisting of single layer graphene between the metal and silicon NW.
Категории: Nano planet

A novel microscope for nanosystems

Physorg.com - 24 июня, 2015 - 15:03
Nanomaterials play an essential role in many areas of daily life. There is thus a large interest to gain detailed knowledge about their optical and electronic properties. Conventional microscopes get beyond their limits when particle size falls to the range of a few ten nanometers where a single particle provides only a vanishingly small signal. As a consequence, many investigations are limited to large ensembles of particles. Now, a team of scientists of the Laser Spectroscopy Division of Prof. Theodor W. Hänsch (Director at the Max Planck Institute of Quantum Optics and Chair for Experimental Physics at the Ludwig-Maximilians-Universität Munich) has developed a technique, where an optical microcavity is used to enhance the signals by more than 1000-fold and at the same time achieves an optical resolution close to the fundamental diffraction limit. The possibility to study the optical properties of individual nanoparticles or macromolecules promises intriguing potential for many areas of biology, chemistry, and nanoscience.
Категории: Nano planet

Nanostructure design enables pixels to produce two different colors

Physorg.com - 24 июня, 2015 - 14:40
Through precise structural control, A*STAR researchers have encoded a single pixel with two distinct colors and have used this capability to generate a three-dimensional stereoscopic image.
Категории: Nano planet

Researchers align atomic friction experiment

Physorg.com - 24 июня, 2015 - 12:50
Working together to study friction on the atomic scale, researchers at UC Merced and the University of Pennsylvania have conducted the first atomic-scale experiments and simulations of friction at overlapping speeds.
Категории: Nano planet

Nanoparticle 'wrapper' delivers chemical that stops fatty buildup in rodent arteries

Physorg.com - 24 июня, 2015 - 00:27
In what may be a major leap forward in the quest for new treatments of the most common form of cardiovascular disease, scientists at Johns Hopkins report they have found a way to halt and reverse the progression of atherosclerosis in rodents by loading microscopic nanoparticles with a chemical that restores the animals' ability to properly handle cholesterol.
Категории: Nano planet

Bacterial method for low-cost, environmentally-friendly synthesis of aqueous soluble quantum dot nanocrystals

Physorg.com - 23 июня, 2015 - 23:25
A team of Lehigh University engineers have demonstrated a bacterial method for the low-cost, environmentally friendly synthesis of aqueous soluble quantum dot (QD) nanocrystals at room temperature.
Категории: Nano planet

Physicists fine-tune control of agile exotic materials

Physorg.com - 23 июня, 2015 - 23:23
Physicists have found a way to control the length and strength of waves of atomic motion called polaritons that have promising potential uses such as fine-scale imaging and the transmission of information within tight spaces. Heterostructures made from graphene and hexagonal boron nitride support hybrid plasmon-phonon polaritons that can be tuned electronically.
Категории: Nano planet

Nanowire implants offer remote-controlled drug delivery

Physorg.com - 23 июня, 2015 - 22:45
A team of researchers has created a new implantable drug-delivery system using nanowires that can be wirelessly controlled.
Категории: Nano planet

Printing with nanomaterials a cost-friendly, eco-friendly alternative

Physorg.com - 23 июня, 2015 - 20:59
Researchers at Binghamton University are focusing on printed electronics: using inkjet technology to print electronic nanomaterials onto flexible substrates. When compared to traditional methods used in microelectronics fabrication, the new technology conserves material and is more environmentally friendly.
Категории: Nano planet

Robust new process forms 3-D shapes from flat sheets of graphene

Physorg.com - 23 июня, 2015 - 20:53
Researchers from the University of Illinois at Urbana-Champaign have developed a new approach for forming 3D shapes from flat, 2D sheets of graphene, paving the way for future integrated systems of graphene-MEMS hybrid devices and flexible electronics.
Категории: Nano planet

Can heat be controlled as waves?

Physorg.com - 23 июня, 2015 - 20:09
A growing interest in thermoelectric materials—which convert waste heat to electricity—and pressure to improve heat transfer from increasingly powerful microelectronic devices have led to improved theoretical and experimental understanding of how heat is transported through nanometer-scale materials.
Категории: Nano planet

Diode a few atoms thick shows surprising quantum effect

Physorg.com - 23 июня, 2015 - 16:38
A quantum mechanical transport phenomenon demonstrated for the first time in synthetic, atomically-thin layered material at room temperature could lead to novel nanoelectronic circuits and devices, according to researchers at Penn State and three other U.S. and international universities.
Категории: Nano planet

New 2-D material's properties show promise

Physorg.com - 23 июня, 2015 - 14:50
One completed a series of theoretical calculations to predict its properties with the help of a massive computing center. The other grew it in bulk before waxing its atom-thin whiskers with the assistance of adhesive tape.
Категории: Nano planet

Kirigami art could enable stretchable plasma screens

Physorg.com - 23 июня, 2015 - 14:40
The art of paper cutting may slice through a roadblock on the way to flexible, stretchable electronics, a team of engineers and an artist at the University of Michigan has found.
Категории: Nano planet

A dual-phase lithium metal anode for next-generation lithium-sulphur batteries

Physorg.com - 23 июня, 2015 - 13:41
Researchers have proposed an efficient and stable dual-phase lithium metal anode for Li-S batteries, containing polysulfide-induced solid electrolyte interphase and nanostructured graphene framework at Tsinghua University, appearing in ACS Nano.
Категории: Nano planet

Sweeping lasers snap together nanoscale geometric grids

Physorg.com - 23 июня, 2015 - 12:00
Down at the nanoscale, where objects span just billionths of a meter, the size and shape of a material can often have surprising and powerful electronic and optical effects. Building larger materials that retain subtle nanoscale features is an ongoing challenge that shapes countless emerging technologies.
Категории: Nano planet