#New receptor for controlling blood pressure discovered High blood pressure is a primary risk factor in the development of many cardiovascular diseases.
as well as development of the devices that deliver the stream of nanocrystals. The work is based on a team effort of ASU faculty Wei Liu
A nanoscale view of the new superfast fluorescent system using a transmission electron microscope. The silver cube is just 75-nanometers wide.
The quantum dots (red) are sandwiched between the silver cube and a thin gold foil. At its most basic level, your smart phone battery is powering billions of transistors using electrons to flip on and off billions of times per second.
When a laser shines on the surface of a silver cube just 75 nanometers wide,
Energy trapped on the surface of the nanocube in this fashion is called a plasmon. The plasmon creates an intense electromagnetic field between the silver nanocube
and a thin sheet of gold placed a mere 20 atoms away. This field interacts with quantum dotspheres of semiconducting material just six nanometers widehat are sandwiched in between the nanocube and the gold.
The quantum dots, in turn, produce a directional, efficient emission of photons that can be turned on and off at more than 90 gigahertz. here is great interest in replacing lasers with LEDS for short-distance optical communication,
The silver nanocube sits on top of a thin gold foil, with red quantum dots sandwiched between. he eventual goal is to integrate our technology into a device that can be excited either optically
is pushing pretty hard for. he group is now working to use the plasmonic structure to create a single photon source necessity for extremely secure quantum communicationsy sandwiching a single quantum dot in the gap between the silver nanocube and gold foil.
The researchers have created a novel nanosheet a thin layer of semiconductor that measures roughly one-fifth of the thickness of human hair in size with a thickness that is roughly one-thousandth of the thickness of human hair with three
The researchers, engineers in ASU Ira A. Fulton Schools of Engineering, published their findings in the online publication of the journal Nature Nanotechnology.
He and his graduate students turned to nanotechnology to achieve their milestone. The key is that at nanometer scale larger mismatches can be tolerated better than in traditional growth techniques for bulk materials.
High quality crystals can be grown even with large mismatch of different lattice constants. Recognizing this unique possibility early on,
Ning group started pursuing the distinctive properties of nanomaterials, such as nanowires or nanosheets, more than 10 years ago.
He and his students have been researching various nanomaterials to see how far they could push the limit of advantages of nanomaterials to explore the high crystal quality growth of very dissimilar materials.
Six years ago, under U s army Research Office funding, they demonstrated that one could indeed grow nanowire materials in a wide range of energy bandgaps
Later on they realized simultaneous laser operation in green and red from a single semiconductor nanosheet or nanowires.
and very different material properties. e have struggled for almost two years to grow blue emitting materials in nanosheet form,
In the first demonstration of how the technology works, published July 30 in the journal Cell, the researchers look inside the brain of an adult mouse at a scale previously unachievable, generating images at a nanoscale resolution.
The new nanoelectronic eshstructure that Lieber group has designed is much more like the biological tissue it is meant to interface with,
the mesh is composed of nanoscale metal wires and polymers. Tiny electronic devices, such as sensors and electrode stimulators, can be built into it.
This research suggested that black phosphorous could have a bright future in nanoelectronic devices. But there is a problem.
These guys have perfected a way of making large quantities of black phosphorus nanosheets with dimensions that they can control.
The result is that the bulk mass separates into a large number of nanosheets that the team filters for size using a centrifuge.
That leaves high-quality nanosheets consisting of only a few layers. iquid phase exfoliation is a powerful technique to produce nanosheets in very large quantities
One potential problem with black phosphorus nanosheets is that they degrade rapidly when in contact with water or oxygen.
the nanosheets are surprisingly long-lived. The big advantage of black phosphorus over graphene is that it has a natural bandgap that physicists can exploit to make electronic devices
But Hanlon and co say the newfound availability of black phosphorus nanosheets has allowed them to test a number of other ideas as well.
For example, they added the nanosheets to a film of polyvinyl chloride, thereby doubling its strength and increasing its tensile toughness sixfold.
They also determined the nonlinear optical response of the nanosheets to a pulsed laser by measuring the amount of light that is transmitted.
Finally, they measured the current through the nanosheets while exposing them to ammonia. They found that the material resistance increased
The Minion was developed by Oxford Nanopore technologies and is currently undergoing tests to evaluate the technology.
"We were able to mathematically model nanopore sequencing and develop ways to reconstruct complete genomes off this tiny sequencer,
During testing, the coral-like plates removed 2. 5 times as much mercury from water than traditional aluminium oxide nanoparticles.
the team fabricated single crystal nanostructures made with III-V materials, including alloys of indium, gallium and arsenide.
and to lithographically define oxide templates and fill them via epitaxy, making nanowires, cross junctions,
nanostructures containing constrictions and 3d stacked nanowires. According to Schmid, more work is required before the same level of control can be exerted over III-V materials as currently exists for silicon,
#Researchers produce'nanoribbons'with mortar and pestle A newly discovered solid-state chemical reaction could help advance the production of nano-strucutures,
Now, researchers at Rice university in the US have found a new way of producing the material by grinding modified nanotubes with a mortar and pestle.
According to materials scientist Pulickel Ajayan this breakthrough reported in the current issue of Nature Communications-has been achieved by mixing two types of chemically modified nanotubes which,
react and unzip into nanoribbons. The team claims that the new process could lead to significant advances in nanomaterials development. f we can use nanotubes as templates,
functionalise them and get reactions under the right conditions, what kinds of things can we make with a large number of possible nanostructures and chemical functional groups?
said Ajayan. In their tests, the researchers prepared two batches of multi-walled carbon nanotubes, one with carboxyl groups and the other with hydroxyl groups attached.
When ground together for up to 20 minutes with a mortar and pestle, the chemical additives reacted with each other,
triggering the nanotubes to unzip into nanoribbons, with water as a byproduct. The experiments were duplicated by participating labs at Rice, at the Indian Institute of technology and at the Lebanese American University in Beirut.
Intriguingly, despite the promise of the work, the researchers still don know precisely what happening at the nanoscale. t is an exothermic reaction,
so the energy enough to break up the nanotubes into ribbons, but the details of the dynamics are difficult to monitor,
Beirut. here no way we can grind two nanotubes in a microscope and watch it happen.
To date, there has been no comparable technique for imaging 3d magnetic structures on nanometre length scales.
However, so far only electron holography could be considered for mapping magnetic domains of three-dimensional objects at the nanometre scale
who worked with Petta in his lab. Prof Petta added that a double quantum dot was capable of only transferring one electron at a time.
The paper, Semiconductor double quantum dot micromaser, was published in the Science journal yesterday d
#Graphene sheaths could boost processor signal speeds by 30 per cent Scientists at Stanford have found a new use for graphene that will significantly increase the speed of standard computer processors.
ASU/Nature Nanotechnology o
#Google, Samsung, and 16 others receive post-password certification This morning, the plot to kill the password got a little stronger. 18 different companies received an official FIDO certification for 31 different products,
which densely populated, lumpy nanostructures were formed. The optical and wetting properties of the surfaces of the three metals were altered by these nanostructures.
The nanostructures created by the lasers are intrinsic to the metal surface. According to the researchers, properties they provide to the metal will not deteriorate.
The super-hydrophobic properties of the laser-patterned metals are similar to the famous nonstick coating.
so that nanoscale structures can be seen with an ordinary light microscope. This new technique uses commonly available chemicals to help experts increase the size of tissue samples effortlessly.
said, nstead of acquiring a new microscope to take images with nanoscale resolution, you can take the images on a regular microscope.
Quantum dots are nanocrystals, which are made of semiconductor materials that are small enough to exhibit quantum mechanical properties.
They used extremely thin nanowires that were made of indium arsenide to fabricate the quantum dots. The placed the qubits 6 mm apart in a cavity that was made from niobium at a temperature near absolute zero(-459 degrees Fahrenheit.
A single electron trapped in a semiconductor nanostructure can form the most basic of building blocks for a quantum computer.
and researching the role of nanoparticles in blood in diseases detection. Clinical trials have revealed that the spoon reduces shaking by about 76 percent.
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