#Nanoparticle network could bring fast-charging batteries (Phys. org) A new electrode design for lithium-ion batteries has been shown to potentially reduce the charging time from hours to minutes by replacing the conventional graphite electrode with a network of tin-oxide nanoparticles.
The anode consists of an ordered network of interconnected tin oxide nanoparticles that would be practical for commercial manufacture
When tin oxide nanoparticles are heated at 400 degrees Celsius they self-assemble into a network containing pores that allow the material to expand
Without the proper pore size and interconnection between individual tin oxide nanoparticles the battery fails. The research paper was authored by Etacheri;
and are thus more durable than normal nanoparticles.""Nano meets Life"is the second motto of the TU Materials science researchers.
and Engineering in Singapore is helping to circumvent this limitation using a technique known as'directed self-assembly of nanoparticles'(DSA-n). This approach takes spherical nanoparticles that spontaneously organize into ordered two-dimensional films
when template constraints become comparable to the size of the nanoparticles. At these dimensions the small spheres can dislocate from typical periodic positions
With this system we can track the self-assembly of the nanoparticles according to the space accessible to them.
Last year materials scientist Chunmei Ban and her colleagues at the National Renewable energy Laboratory in Golden Colorado and the University of Colorado Boulder found that they could cover silicon nanoparticles with a rubberlike coating made from aluminum glycerol.
Researchers did not know how this coating improved the performance of the silicon nanoparticles. The nanoparticles naturally grow a hard shell of silicon oxide on their surface much like stainless steel forms a protective layer of chromium oxide on its surface.
No one understood if the oxide layer interfered with electrode performance and if so how the rubbery coating improved it.
So Yang He from the University of Pittsburgh explored the coated silicon nanoparticles in action at EMSL.
In the future the researchers would like to develop an easier method of coating the silicon nanoparticles. Explore further:
In situ Transmission Electron microscopy Probing of Native Oxide and Artificial Layers on Silicon Nanoparticles for Lithium ion batteries ACS Nano October 27 2014 DOI:
The first is the dispersion of calcium hydroxide nanoparticles in short chain alcohols for the consolidation of wall paintings plasters and stone.
The second is the dispersion of alkaline nanoparticles in either short chain alcohols or water for the ph control of movable works of art such as paper parchment and leather.
Dispersions of nanoparticles of calcium hydroxide for the consolidation of wall paintings plasters and stone are already available to conservators worldwide under the trademark Nanorestore.
Nanoparticles for the ph control of movable works of art (e g. paper wood canvas) have been branded under the trademark Nanorestore Paper;
and if the films were covered with catalytic nanoparticles such as platinum. The discovery makes monolayers of graphene
#Nanoparticles infiltrate kill cancer cells from within Conventional treatment seeks to eradicate cancer cells by drugs and therapy delivered from outside the cell
In contrast to conventional cancer therapy a University of Cincinnati team has developed several novel designs for iron-oxide based nanoparticles that detect diagnose
PTT uses the nanoparticles to focus light-induced heat energy only within the tumor harming no adjacent normal cells.
The UC study used the living cells of mice to successfully test the efficacy of their two-sided nanoparticle designs (one side for cell targeting and the other for treatment delivery) in combination with the PTT.
The laser light heats the nanoparticles to at least 43 degrees Celsius to kill the cancer cells ultimately leaving all the other cells in the body unharmed.
Future research in nanoparticle PTT will look at toxicity biodegradability and compatibility issues. Shi said that the team is currently looking for other diverse biodegradable materials to use for the carriers such as plant chlorophylls like those in cabbage that are both edible and photothermal.
NTU associate professors Zhang Qichun and Joachim Loo have found a way to make the nanoparticle light up
Prof Loo said their new biomarker can#also release anticancer drugs by creating a layer of coating loaded with drugs on the outside of the nanoparticle.#
The discovery is important as people are being exposed to nanoparticles every day. Nanosilver is used also in biomedical applications toys sunscreen cosmetics clothing and other items.
It is important as we are exposed more and more to nanoparticles in our everyday lives through different routes such as inhalation direct contact or ingestion.
In this instance rather than being used as therapy the synthetic stool was used to examine the impact of nanoparticles on the human gut.
This information can help lead to an understanding of how nanoparticles could impact our gut ecosystem.
#Study suggests light may be skewing lab tests on nanoparticles'health effects Truth shines a light into dark places.
That's what recent findings at the National Institute of Standards and Technology (NIST) show about methods for testing the safety of nanoparticles.
It turns out that previous tests indicating that some nanoparticles can damage our DNA may have been skewed by inadvertent light exposure in the lab. Nanoparticles made of titanium dioxide are a common ingredient in paint
scientists have accepted long that these nanoparticles would not damage cells by forming free radicals from light activation.
whether light was required indeed for the nanoparticles to cause DNA damage.""We didn't set out to test the safety of the particles themselveshat's for someone else to determine,
"The NIST team exposed samples of DNA to titanium dioxide nanoparticles under three different conditions: Some samples were exposed in the presence of visible
"The results suggest that titanium dioxide nanoparticles do not damage DNA when kept in the dark,
must be controlled carefully before drawing conclusions about nanoparticle effects on DNA
#Research team developing injectable treatment for soldiers wounded in battle Internal bleeding is a leading cause of death on the battlefield,
noting that animal models have shown clot formation occurring in about one minute as opposed to five minutes without the presence of these nanoparticles.
"These 2d, silicate nanoparticles are unprecedented in the biomedical field, and their use promises to lead to both conceptual and therapeutic advances in the important and emerging field of tissue engineering, drug delivery, cancer therapies and immune engineering,
and the biochar nanoparticles can create an extremely large surface area which can then hold more charge.
Researchers synthesize platelet-like nanoparticles that can do more than clot blood (Phys. org) Stanching the free flow of blood from an injury remains a holy grail of clinical medicine.
By creating nanoparticles that mimic the shape flexibility and surface biology of the body's own platelets they are able to accelerate natural healing processes
That's where platelet-like nanoparticles (PLNS) come in. These tiny platelet-shaped particles that behave just like their human counterparts can be added to the blood flow to supply
and wound healing in older patients by using nanoparticles that can target where clots are forming without triggering unwanted bleeding.
In other applications bloodborne pathogens and other infectious agents could be minimized with antibiotic-carrying nanoparticles.
U s. Patent 8841272 Double stranded-rna RNA-Based Nanoparticles for Insect Gene Silencing was awarded recently to the Kansas State university Research Foundation a nonprofit corporation responsible for managing technology transfer activities
nanoparticles comprised of a nontoxic biodegradable polymer matrix and insect derived double-stranded ribonucleic acid or dsrna.
After testing a series of unsuccessful genetic techniques the team turned to a nanoparticle-based approach.
Once ingested the nanoparticles act as a Trojan horse releasing the loosely bound dsrna into the insect gut.
which the nanoparticle-based method was developed the technology can be applied to other insect pests Zhu said.
When you make baits containing gene-specific nanoparticles you may be able to kill the insects through the RNAI pathway.
The technical definition is that a nanoparticle is an object that is less than 100 nanometres wide along one of its edges Professor Graham told us.
Nanoparticles can be made of anything they can be metallic organic or inorganic and they come in all manner of different shapes
Nanoparticles have been around for centuries. Ancient art has used nanoparticles. They're in stained glass windows. The Lycurgus Cup in The british Museum looks so magical
because it's made of glass containing gold nanoparticles. And more immediately they're already used in medical detectors for example the pregnancy tests you buy over-the-counter work use gold nanoparticles attached to antibodies.
Nanoparticles have an extremely high surface area in relation to their volume. This means they can carry a lot of'stuff'on their surface proteins from blood for example.
and therefore difficult to measure can collect on some nanoparticles in amounts large enough to detect.
There's a bewildering amount of modification that researchers around the world are adding to the surface of nanoparticles.
either using optical (light-based) detection where nanoparticles are used to either emit light directly or change the optical properties of their surroundings or magnetic systems.
His team are doing some really interesting stuff with regards imaging using nanoparticles says Graham.
when you put nanoparticles into the body they tend to get removed from the body in the urine via the kidneys.
'This is where random nonspecific molecules stick to the nanoparticles and clog them up or deactivate them.
Starting with a solution of colloidal nanorods Yang and Ni built on the common self-assembly technique used to build nanoparticles.
The method developed in Zhang's research group can be applied to many other nanoparticles; indeed almost any structure that can self-assemble could be produced in this way.
#A quantum leap in nanoparticle efficiency (Phys. org) New research has unlocked the secrets of efficiency in nanomaterials that is materials with very tiny particles
Researchers found the precise geometry of nanoparticle pairs that maximises light concentration resolving a hotly debated area of quantum physics.
This geometry now determines the efficiency nanoparticle use as a chemical sensor in sensing minute quantities of chemicals in air and water.
concentration for fabricated nanoparticles. Professor Crozier said This work is important for engineers and scientists working in the nanomaterial industry y
they were able to quantify the relationship between the CARS light intensity and the nanoparticle size.
and at the same time transforms the iron nanoparticles into innocuous salt.""We believe we are offering a totally innovative approach to the improvement of biogas production and organic waste treatment,
since this is the first nanoparticle application developed with this in mind. In addition, it offers a significant improvement in the decomposition of organic waste
Applied Nanoparticles, a Gateway to the Market"Our idea is the result of many projects:
With that in mind, they created Applied Nanoparticles, gestated at the ICN2 and currently in the process of signing a knowledge transfer agreement with the UAB."
The cost of this new nanofluid (to which nanoparticles are added in order to enhance and improve heat conductivity) is similar to that of the base fluid,
since both the nanoparticles and the stabilizers used are inexpensive. All these features make it suitable for industrial applications that employ heat transmission/exchange systems.
and increases the thermal conductivity by adding an exact proportion of nanoparticles consisting on carbon and other additives to the base fluid (diphenyl/diphenyl oxide),
which means that it does not give rise to any problems with pumping, the precipitation of nanoparticles or the obstruction of conduits.
because both the nanoparticles and the stabilizers used are abundant, readily accessible and inexpensive e
and expanded to fill all existing space within the DNA framework resulting in a cuboid nanoparticle with the same dimensions as its mold. with the length width
Next researchers fabricated varied 3d polygonal shapes spheres and more ambitious structures such as a 3d Y-shaped nanoparticle and another structure comprising a cuboid shape sandwiched between two spheres proving that structurally-diverse
nanoparticles could be shaped using complex DNA mold designs. Given their unthinkably small size it may come as a surprise that stiff DNA molds are proportionally quite robust and strong able to withstand the pressures of expanding inorganic materials.
Although the team selected gold seedlings to cast their nanoparticles there is a wide range of inorganic nanoparticles that can be shaped forcibly through this process of DNA nanocasting.
A very useful property is that once cast these nanoparticles can retain the framework of the DNA mold as an outer coating enabling additional surface modification with impressive nanoscale precision.
#Nanoparticle research could enhance drug delivery through skin Scientists at the University of Southampton have identified key characteristics that enhance a nanoparticle's ability to penetrate skin in a milestone study which could have major implications for the delivery of drugs.
Nanoparticles are up to 100000 times smaller than the thickness of a human hair and drugs delivered using them as a platform can be concentrated more targeted
Although previous studies have shown that nanoparticles interact with the skin conditions in these experiments have not been controlled sufficiently to establish design rules that enhance penetration.
By creating nanoparticles with different physicochemical characteristics and testing them on skin we have shown that positively charged nanorod shaped nanoparticles are two to six times more effective at penetrating skin than others says lead author Dr Antonios Kanaras.
When the nanoparticles are coated with cell penetrating peptides the penetration is enhanced further by up to ten times with many particles making their way into the deeper layers of the skin (such as the dermis.
Establishing which characteristics contribute to penetration is also important in discovering ways to prevent potentially toxic nanoparticles in other materials such as cosmetics from entering the skin.
#Drug-infused nanoparticle is right for sore eyes For the millions of sufferers of dry eye syndrome their only recourse to easing the painful condition is to use drug-laced eye drops three times a day.
Now researchers from the University of Waterloo have developed a topical solution containing nanoparticles that will combat dry eye syndrome with only one application a week.
The eye drops progressively deliver the right amount of drug-infused nanoparticles to the surface of the eyeball over a period of five days before the body absorbs them.
The nanoparticles about 1/1000th the width of a human hair stick harmlessly to the eye's surface and use only five per cent of the drug normally required.
You can't tell the difference between these nanoparticle eye drops and water said Shengyan (Sandy) Liu a Phd candidate at Waterloo's Faculty of engineering who led the team of researchers from the Department of Chemical engineering and the Centre for Contact lens Research.
if we focused on infusing biocompatible nanoparticles with Cyclosporine A the drug in the eye drops
The research team is now focusing on preparing the nanoparticle eye drops for clinical trials with the hope that this nanoparticle therapy could reach the shelves of drugstores within five years.
#Targeted nanoparticles that combine imaging with two different therapies could attack cancer other conditions Nanosystems that are'theranostic'they combine both therapeutic and diagnostic functions present an exciting new opportunity for delivering drugs
and Engineering and colleagues at the National University of Singapore have created nanoparticles with two distinct anticancer functions
The nanoparticles also include the cell-targeting property essential for treating and imaging in the correct locations.
The natural fluorescence of the polymer assists with diagnosis and monitoring of therapy as it shows where nanoparticles have accumulated.
of which overexpressed a surface protein that could bind to the targeting peptide on the nanoparticles.
Fluorescence imaging indicated that the nanoparticles were taken up by the target cells and that ROS and doxorubicin were released within these cells all at significantly higher levels than in cells used as controls.
Introducing the multitasking nanoparticle More information: Yuan Y. Liu J. & Liu B. Conjugated-polyelectrolyte-based polyprodrug:
#Nanoparticles break the symmetry of light How can a beam of light tell the difference between left and right?
#Researcher develops optically traceable smart 2-D nanosheet that responds to ph Nanoparticles have the potential to revolutionize the medical industry
Finally they need to perform their function at the right moment ideally in response to a stimulus. The Nanoparticles By design Unit at the Okinawa Institute of Science
#'Stealth'nanoparticles could improve cancer vaccines Cancer vaccines have emerged recently as a promising approach for killing tumor cells before they spread.
And the key they report in the journal ACS Nano is in the vaccine's unique stealthy nanoparticles.
if stealthy nanoparticles they had developed and clinically tested in patients might hold the answer. The researchers injected the nanoparticles into mice.
They found that the particles which have no electric charge or surface molecules that would attract the attention of circulating immune cells were able to enter the mice's lymph nodes.
When molecules for signaling killer T cells were put inside the nanoparticles they hindered tumor growth far better than existing vaccines.
#Nanoparticles accumulate quickly in wetland sediment (Phys. org) A Duke university team has found that nanoparticles called single-walled carbon nanotubes accumulate quickly in the bottom sediments of an experimental wetland setting an action they say could indirectly damage the aquatic food chain.
if the nanoparticles provide Trojan horse piggyback rides to other harmful molecules. The results appear online in the journal Environmental science:
They found that the vast majority of the nanoparticles quickly accumulated in the sediment on the pond floor.
However they found no sign of nanoparticle buildup in any plants insects or fish living in the mesocosms.
These nanoparticles are really good at latching onto other molecules including many known organic contaminants said Ferguson.
The nanoparticle-pollutant package could then be eaten by sediment-dwelling organisms in a sort of'Trojan horse'effect allowing the adsorbed contaminants to accumulate up the food chain.
"The result was that the nonimmunogenic hybrid patch contracted nicely due to the nanoparticles, transferring electrical signals much faster and more efficiently than non-modified scaffolds."
In the form of nanowires and nanoparticles it has particular potential for use in the manufacture of solar cells
then the National Institute of Standards and Technology (NIST) can now make anyone working with nanoparticles very happy.
"For anyone working with nanomaterials at dimensions 5 nanometers or less, our well-characterized nanoparticles can ensure confidence that their measurements are accurate,
Silicon nanoparticles such as those in RM 8027 are being studied as alternative semiconductor materials for next-generation photovoltaic solar cells and solid-state lighting,
silicon nanoparticles may one day serve as easily detectable"tags"for tracking nanosized substances in biological, environmental or other dynamic systems s
Polymersome magneto-valves for reversible capture and release of nanoparticles. Nature Communications DOI: 10.1038/ncomms601 6
and hard-wearing nanocomposites is obtaining an even distribution of the nanoparticles in the metal matrix.
They then injected a slurry of aluminum oxide nanoparticles into the holes and heated the sheet in an oven.
Placing the nanoparticles in the sheet prior to the friction stir processing step significantly increased the concentration of nanoparticles in the composite.
They first demonstrated that the nanoparticles were dispersed uniformly which means the material has no weak points.
and without the Al2o3 nanoparticles the team showed that the nanoparticles contributed to the reduction in grain size.
The best nanoparticle distribution and smallest aluminum alloy grains were obtained after passing the rotating tool through the sheet four times.
Scientists use nanoparticles to control growth of materials More information: Guo J. F. Liu J. Sun C. N. Maleksaeedi S. Bi G. et al.
#Experts create unique nanoparticles for aerospace industry A development of three universities enables improved thermal and electronic properties on devices with nickel-titanium alloys.
Experts collaborated to produce nanoparticles made of a titanium-nickel alloy used in the development of thermal and electrical sensors that control the operation of high-tech devices such as those used in aerospace,
Meanwhile, the team at the UANL manufactured nanoparticles used in the sensors, and after a series of tests confirmed the effectiveness of the titanium-nickel as an electrical and thermal conductor.
With nanoparticles, they produced temperature-sensitive devices that transmit electrical energy to the system but do not cause overheating.
Then nanoparticles were obtained by thermal evaporation techniques where the molecular bonds of the metals degraded as a powder
Besides generating nanoparticles for sensors, another goal of this proyect is to train high level human resources in the areas of metallurgy alloys with shape memory,
These protons make their way to the platinum nanoparticles which sit on top of the titanium dioxide. Hydrogen is produced by the interaction of the protons
For this study scientists looked at a positive electrode made of billions of nanoparticles of lithium iron phosphate.
Previous studies produced conflicting views of how the nanoparticles behaved. To probe further researchers made small coin cell batteries charged them with different levels of current for various periods of time quickly took them apart
We were able to look at thousands of electrode nanoparticles at a time and get snapshots of them at different stages during charging
Analyzing the data using a sophisticated model developed at MIT the researchers discovered that only a small percentage of nanoparticles absorbed and released ions during charging even
#'Human touch'nanoparticle sensor could improve breast cancer detection (Phys. org) niversity of Nebraska-Lincoln scientists have developed a nanoparticle-based device that emulates human touch
In research funded with a grant from the National institutes of health, Saraf and Nguyen perfected a thin film made of nanoparticles and polymers
#Researcher's nanoparticle key to new malaria vaccine A self-assembling nanoparticle designed by a UCONN professor is the key component of a potent new malaria vaccine that is showing promise in early tests.
But a novel protein nanoparticle developed by Peter Burkhard, a professor in the Department of Molecular & Cell biology, in collaboration with David Lanar
The key to the vaccine's success lies in the nanoparticle's perfect icosahedral symmetry (think of the pattern on a soccer ball)
We are able to achieve our high density because of the design of the nanoparticle, which we control."
It took the researchers more than 10 years to finalize the precise assembly of the nanoparticle as the critical carrier of the vaccine
holds the patent on the self-assembling nanoparticle used in the malaria vaccine. Burkhard is also exploring other potential uses for the nanoparticle,
including a vaccine that will fight animal flu and one that will help people with nicotine addiction.
Guiding Brain tumor Resection Using Surface-Enhanced Raman Scattering Nanoparticles and a Hand-held Raman Scanner ACS Nano Article ASAPDOI:
Here we evaluated the ability of a hand-held Raman scanner guided by surface-enhanced Raman scattering (SERS) nanoparticles to identify the microscopic tumor extent in a genetically engineered RCAS/tv-a glioblastoma mouse model.
and correlation with histology showed that SERS nanoparticles accurately outlined the extent of the tumors.
because it uses inert gold#silica SERS nanoparticles and a hand-held Raman scanner that can guide brain tumor resection in the operating room o
the fringes here are replaced with nanoparticles smaller than half the wavelength of light. The researchers showed that the narrower band diffraction,
By using nanoparticles of silver with different shapes and sizes, the researchers could control the colors.
In addition to providing multiple colors, multiplexing two nanoparticles has the advantage of increasing the bandwidth information limits.
The researchers showed that each nanoparticle carries independent information such as polarization and wavelength, which can be controlled simultaneously.
With twice the number of nanoparticles, the total amount of binary information stored can exceed the traditional limits of diffraction."
"It has been shown that nanoparticles with resonant properties can be uncoupled over subwavelength distances so their electromagnetic fields have minimal interaction,
"The device presented demonstrates that these nanoparticles can store and transfer independent information beyond the diffraction limits,
#Eco-friendly'prefab nanoparticles'could revolutionize nano manufacturing A team of materials chemists polymer scientists device physicists
and others at the University of Massachusetts Amherst today report a breakthrough technique for controlling molecular assembly of nanoparticles over multiple length scales that should allow faster cheaper more ecologically friendly manufacture of organic photovoltaics and other electronic devices.
It was Bag who put similar sized and charged nanoparticles together to form a building block then used an artist's airbrush to spray layers of electrical circuits atop each other to create a solar-powered device.
The high capacity of our nanoparticle method makes it much faster than column chromatography explains Gagnon.
In addition to solving the longstanding problem of productivity for monoclonal antibodies the nanoparticle approach can be applied to many other therapeutic proteins and also to viral vaccines.
and composition of the nanorods means it is easier to control the properties of the bimetallic goldopper nanoparticles compared to nanoparticles made of just one metal,
Her team now plans to use the nanorods as seeds themselves to synthesize nanoparticles comprised of a goldopper core surrounded by a shell of another material, such as platinum, for energy applications
In order to view the behaviour of the cell membrane at the level of individual molecules the Cambridge team working with researchers from the University of Leeds squeezed them into a tiny gap between the mirrored gold facets of a nanoparticle sitting just above a flat gold surface.
The film can be applied onto degradable nanoparticles for injection into local sites or used to coat permanent devices such as orthopedic implants.
Yung-Eun Sung is both a group leader at the Center for Nanoparticle Research at Institute for Basic Science*(IBS) and a professor at the Seoul National University.
Group leader Yung-Eun Sung of the Center for Nanoparticle Research at IBS, says,"We expect that our synthetic approach will be developed to produce doped carbon materials based on other elements (e g.,
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011