#Liberating devices from their power cords: New structural'supercaps'take a lickin'keep on workin'Imagine a future in which our electrical gadgets are limited no longer by plugs and external power sources.
Gold nanoparticles lie on the surface of the chip and are programed chemically with an antibody receptor in such a way that they are capable of specifically attracting the protein markers circulating in blood.
and if cancer markers are present in the blood they will stick to the nanoparticles located on the micro-channels as they pass by setting off changes in
"When researching nanoparticles, you normally use samples. For us, we set the challenge to coat 2 meters long stainless steel tubes,
#Researchers find definitive evidence of how zeolites grow Researchers have found the first definitive evidence of how silicalite-1 (MFI type) zeolites grow showing that growth is concerted a process involving both the attachment of nanoparticles and the addition of molecules.
For more than two decades researchers have theorized that nanoparticles which are known to be present in zeolite growth solutions played a role in the growth
or molecules to the crystal the presence and gradual consumption of nanoparticles suggested a nonclassical pathway for zeolite crystallization.
The device which is designed to be used outside the body much like dialysis uses nanoparticles to trap pore-forming toxins that can damage cellular membranes
Nanoparticles have already been shown to be effective at neutralizing pore-forming toxins in the blood
but if those nanoparticles cannot be digested effectively they can accumulate in the liver creating a risk of secondary poisoning especially among patients who are already at risk of liver failure.
To solve this problem a research team led by nanoengineering professor Shaochen Chen created a 3-D-printed hydrogel matrix to house nanoparticles forming a device that mimics the function of the liver by sensing attracting
The concept of using 3-D printing to encapsulate functional nanoparticles in a biocompatible hydrogel is said novel Chen.
#The scientists used a light-sensitive bio-compatible epoxy resin in which they incorporated magnetic nanoparticles. In the first part of the curing stage they exposed a thin layer of this material to a magnetic field.
This field magnetised the nanoparticles leading to a particle re-arrangement in form of parallel lines.
potentially offering an easy way to monitor the assembly of nanoparticles, or to study how mass is distributed within a cell.
and morphology of the alloy nanoparticles on surfaces,"said Dr. Grant Johnson, a PNNL physical chemist who led the study.
The team created the nanoparticles using magnetron sputtering and gas aggregation. They placed them on a surface using ion soft landing techniques devised at PNNL.
The result is a layer of bare nanoparticles made from two different metals that is free of capping layers, residual reactants,
The result is bare ionic metal nanoparticles that are about 4 to 10 nanometers across. The mass spectrometer filters the ionic particles,
rather than homogeneous nanoparticles with the desired shape. Further, the particles lack a capping layer.
At relatively short time frames on flat surfaces, the nanoparticles bind randomly. Leave the process running longer and a continuous film forms.
Stepped surfaces result in the nanoparticles forming linear chains on the step edges at low coverage.
While this work focuses on single nanoparticles, the final result is extended an array with implications that stretch from the atomic scale to the mesoscale."
"Soft Landing of Bare Nanoparticles with Controlled Size, Composition, and Morphology.""Nanoscale 7: 3491-3503.
form new nanocrystals that are attached loosely to the seed surface. Fluids, used in the process, shear the weakly tethered new crystals from the seed crystal surface allowing the surfaces to be further available for a repeat process
creating an electrode made of nanoparticles with a solid shell, and a olkinside that can change size again and again without affecting the shell.
The use of nanoparticles with an aluminum yolk and a titanium dioxide shell has proven to be he high-rate champion among high-capacity anodes
That where the idea of using confined aluminum in the form of a yolk-shell nanoparticle came in.
That alliance also has led to important advances in the use of quantum dot materials to create highly efficient solar cells and sodium batteries,
#Bioadhesive Nanoparticles Help Protect Your Skin From the Sun Dermatologists from Yale university have developed a new sunscreen made with bioadhesive nanoparticles that doesn penetrate the skin,
made with bioadhesive nanoparticles, that stays on the surface of the skin. Results of the research will appear in the September 28 online edition of the journal Nature Materials. e found that
and our nanoparticles are so adhesive that they don even go into hair follicles, which are relatively open.
the researchers developed a nanoparticle with a surface coating rich in aldehyde groups, which stick tenaciously to the outer skin layer.
The nanoparticle hydrophilic layer essentially locks in the active ingredient, a hydrophobic chemical called padimate O. Some sunscreen solutions that use larger particles of inorganic compounds, such as titanium dioxide or zinc oxide,
By using a nanoparticle to encase padimate O, an organic chemical used in many commercial sunscreens,
believe this latest work could usher in the fabrication of nanoscale superconducting quantum interference devices and single-electron superconductor quantum dots u
#Peering Into Nanoparticles One at a time Reveals Hidden World Imagine you could single out individuals in a large group
This is essentially what researchers at Chalmers University in Sweden have been able to achieve with a new microscopy technique that is capable of looking at a single nanoparticle rather than just a mass of them all clumped together. e were able to show that you gain deeper insights into the physics
of how nanomaterials interact with molecules in their environment by looking at the individual nanoparticle as opposed to looking at many of them at the same time,
The researchers applied the experimental spectroscopy technique to examine hydrogen absorption in single palladium nanoparticles.
despite various nanoparticles having the same size and shape, they would absorb hydrogen at pressures as different as 40 millibars.
While others have been able to image single nanoparticles previously, those efforts came at a rather high cost of heating the nanoparticles up,
or impacting them in some other way that eliminates the ability to observe them accurately. hen studying individual nanoparticles you have to send some kind of probe to ask the particle hat are you doing?
said Langhammer. his usually means focusing a beam of high-energy electrons or photons or a mechanical probe onto a very tiny volume.
so that it is possible to study nanoparticles one at a time in their actual environments. This ability to observe nanoparticles outside the lab could prove to be a key development for studies on the impact of nanoparticles in the environment e
#An Electric car Heater Can't Be Too Thin or Too Economical Just about every electrical device seems to want to slim down to a thin filmf possible,
The nanoengineering team was then able to modify the microfish body with various nanoparticles, using platinum in the tail section to interact with the hydrogen peroxide used to propel the fish forward,
Chen and Wang have conducted demonstrations to show the great potential of combining 3d printing with nanoengineering, installing polydiacetylene (PDA) nanoparticles within the microfish.
when nanoparticles are introduced to the particular toxins. This project offers boundless potential for the way that we locate
nanoparticles and biocompatible matrices for biotechnological applications. Moreover, they are pioneers in the application of silica-based ordered mesoporous materials,
#Microbubble Technology for Delivery of Nanoparticles to Tumours Biomedical researchers led by Dr. Gang Zheng at Princess Margaret Cancer Centre have converted successfully microbubble technology already used in diagnostic imaging into nanoparticles that stay
and observed that they fragmented into nanoparticles. Most importantly the nanoparticles stayed within the tumour and could be tracked using imaging."
"Our work provides the first evidence that the microbubble reforms into nanoparticles after bursting and that it also retains its intrinsic imaging properties.
We have identified a new mechanism for the delivery of nanoparticles to tumours, potentially overcoming one of the biggest translational challenges of cancer nanotechnology.
In addition, we have demonstrated that imaging can be used to validate and track the delivery mechanism, "says Dr. Zheng, Senior Scientist at the Princess Margaret and also Professor of Medical Biophysics at the University of Toronto.
"So for clinicians, harnessing microbubble to nanoparticle conversion may be a powerful new tool that enhances drug delivery to tumours,
organic nanoparticle delivery platforms capable of transporting cancer therapeutics directly to tumours. Source: http://www. uhn. ca a
#Electroluminescence with Phosphor Nanoparticles Holds Promise for Modern Lighting Light-emitting diodes (LEDS) are the modern lighting devices used in lamps, signals, signs or displays.
Special nanoparticles, so-called phosphors, are excited in an electric field to emit light. Researchers at the INM Leibniz Institute for New Materials have developed now a new method that enables electroluminescence on large
On application of an AC voltage, light is emitted from the electroluminescent layer. e embed luminous particles in the form of functionalized zinc sulphide nanoparticles as phosphors into the binder layer,
The researchers are currently working on further functionalization of the phosphor nanoparticles. ur goal is to generate white light by means of an altered doping
"Spatially strictly limited silicon nanoparticles display fundamentally different properties to conventional silicon wafers, "explains Matthias Wagner.
thus opens up the possibility of studying the fundamental electronic properties of cage-like Si nanoparticles compared to crystalline semiconductor silicon.
Solid electrolyte Interphase Formation and Preferential Growth of Lithium Metal Nanoclusters. Coauthors are Robert Sacci, Jennifer Black, Nina Balke, Nancy Dudney, Karren More and Raymond Unocic.
After he joined Berkeley Lab around 2000, he learned about quantum dots, which are nanocrystals with peculiar properties,
and began exploring their use in biology. That led to further investigations into nanomaterials. One accomplishment was a so-called molecular ruler made of gold nanoparticles tethered to DNA strands,
which, using plasmon resonance, was capable of measuring protein-DNA interactions. Ultimately Chen and his group developed about 20 patents involving hybrid bionanomaterials.
#Packaging Cancer drug into Nanoparticles Double Tumor Destroying Efficacy Researchers have packaged a widely used cancer drug into nanoparticles,
forming a water-soluble nanoparticle with the drug hidden in its core. These nanoparticles are highly soluble in blood
and are the perfect size to penetrate and accumulate in tumors where they take advantage of a tumor's acidic environment."
creating an electrode made of nanoparticles with a solid shell, and a olkinside that can change size again and again without affecting the shell.
The use of nanoparticles with an aluminum yolk and a titanium dioxide shell has proven to be he high-rate champion among high-capacity anodes
That where the idea of using confined aluminum in the form of a yolk-shell nanoparticle came in.
#Camera-Based Technique Could Improve Manufacturing Efficiency Of high-Performance Nanophotonic Devices Using Quantum dots At the end of last year,
and nanoparticles to naturally occurring plant cells, biological polymers and tissues. The first application in which this microscope was deployed in the DOE Bioenergy Science Center was for analyzing plant cell walls,
The study evaluated the nanoparticle treatment uniformity and particle retention of the nylon membranes as they were processed
and chemically grafted nanomembranes loaded with iron oxide nanoparticles, in the Journal of Applied Polymer Science, July 14.
Adhering nanoparticles of iron oxide to nylon fiber is done in three ways: electrospraying, which facilitates uniform nanoparticle placement in the fibers;
layer-by-layer assembly, where particles are coated on the fiber electrostatically; or chemical bonding. or the membrane, it important to evaluate particle retention and stability,
Trejo explained. ou would want the nanoparticles to stay on the Nylon 6 membranes so the material can have function throughout the life use.
#MRI SCANNERS can Non-Invasively Steer Cells with Nanoparticles to Tumour Sites Magnetic resonance imaging (MRI SCANNERS have been used since the 1980s to take detailed images inside the body-helping doctors to make a medical diagnosis
which have been injected with tiny super-paramagnetic iron oxide nanoparticles (SPIOS), to both primary and secondary tumour sites within the body.
Amorphous Nanoparticles from Wide Material Range Before Ibuprofen can relieve your headache, it has to dissolve in your bloodstream.
Researchers from Harvard John A. Paulson School of engineering and Applied science (SEAS) have developed a new system that can produce stable, amorphous nanoparticles in large quantities that dissolve quickly.
But that not All the system is so effective that it can produce amorphous nanoparticles from a wide range of materials,
These unstructured, inorganic nanoparticles have different electronic, magnetic and optical properties from their crystalized counterparts, which could lead to applications in fields ranging from materials engineering to optics.
Mallinckrodt Professor of Physics and Applied Physics and an associate faculty member of the Wyss Institute for Biologically Inspired Engineering at Harvard, describes the research in a paper published today in Science. his is a surprisingly simple way to make amorphous nanoparticles from almost any material,
The droplets are dried completely between one to three microseconds from the time they are sprayed, leaving behind the amorphous nanoparticle.
At first, the amorphous structure of the nanoparticles was said perplexing Esther Amstad, a former postdoctoral fellow in Weitzlab and current assistant professor at EPFL in Switzerland.
These factors prevent crystallization in nanoparticles, even in materials that are highly prone to crystallization, such as table salt.
The amorphous nanoparticles are exceptionally stable against crystallization lasting at least seven months at room temperature. The next step, Amstad said,
is to characterize the properties of these new inorganic amorphous nanoparticles and explore potential applications. his system offers exceptionally good control over the composition,
This molecule was brominated at either side so that, upon addition of iron nanoparticles, the bromine would be abstracted and a diradical formed.
#Researchers Demonstrate Breakthrough Method for Getting Nanoparticles to Self-Assemble The medium is the message.
An innovative method they have demonstrated now for getting nanoparticles to self-assemble focuses on the medium in
This approach is an elegant alternative to present methods that require nanoparticles to be coated with light-sensitive molecules;
uncoated nanoparticles into a light-sensitive medium would be simpler, and the resulting system more efficient and durable than existing ones.
The nanoparticles then react to the change in acidity in their environment: It is this reaction that causes the particles to aggregate in the dark
This means that any nanoparticles that respond to acid a much larger group than those that respond to light can now potentially be manipulated into self-assembly.
By using light a favored means of generating nanoparticle self-assembly to control the reaction,
when and where the nanoparticles will aggregate. And since nanoparticles tend to have different properties
if they are floating freely or clustered together, the possibilities for creating new applications are nearly limitless.
For one, the particles do not seem to degrade over time a problem that plagues the coated nanoparticles. e ran one hundred cycles of writing
and rewriting with the nanoparticles in a gel-like medium what we call reversible information storage
although we used gold nanoparticles for our experiments, theoretically one could even use sand, as long as it was sensitive to changes in acidity.
In addition to durable ewritable paper, Klajn suggests that future applications of this method might include removing pollutants from water certain nanoparticles can aggregate around contaminants
#Translational Grant for Interaction Study of Laser radiation with Circulating Tumor Cells and Melanin Nanoparticles University of Arkansas for Medical sciences (UAMS) researcher Vladimir Zharov, Ph d.,D. Sc.
and superficial veins and can heat the natural melanin nanoparticles in melanoma circulating tumor cells (CTCS).
The thermal expansion of these nanoparticles generates sound that can be detected with an ultrasound transducer attached to the skin.
This can improve the detection of CTCS by 1000-fold. he goal of this translational research grant is for patients to benefit from the knowledge obtained during our study of the interaction of laser radiation with circulating tumor cells and nanoparticles
Zharov said. any years ago we discovered that laser-induced high local temperature can evaporate liquid surrounding light-absorbing nanoparticles
Natural melanin nanoparticles will be used as biomarkers to diagnose and as targets for therapy. Because not all melanoma cells highly express melanin
#Platelet-Mimicking Nanoparticles Could Effectively Deliver Drugs to Targeted Sites Nanoparticles disguised as human platelets could greatly enhance the healing power of drug treatments for cardiovascular disease and systemic bacterial infections.
These platelet-mimicking nanoparticles, developed by engineers at the University of California, San diego, are capable of delivering drugs to targeted sites in the body--particularly injured blood vessels,
targeted drug delivery with nanoparticles, "said Liangfang Zhang, a nanoengineering professor at UC San diego and the senior author of the study."
platelet-mimicking nanoparticles can directly provide a much higher dose of medication specifically to diseased areas without saturating the entire body with drugs."
The ins and outs of the platelet copycats On the outside, platelet-mimicking nanoparticles are cloaked with human platelet membranes,
which enable the nanoparticles to circulate throughout the bloodstream without being attacked by the immune system. The platelet membrane coating has another beneficial feature:
and certain pathogens such as MRSA bacteria, allowing the nanoparticles to deliver and release their drug payloads specifically to these sites in the body.
Enclosed within the platelet membranes are made nanoparticle cores of a biodegradable polymer that can be metabolized safely by the body.
The nanoparticles can be packed with many small drug molecules that diffuse out of the polymer core and through the platelet membrane onto their targets.
To make the platelet-membrane-coated nanoparticles, engineers first separated platelets from whole blood samples using a centrifuge.
the platelet membranes were broken up into much smaller pieces and fused to the surface of nanoparticle cores.
The resulting platelet-membrane-coated nanoparticles are approximately 100 nanometers in diameter, which is one thousand times thinner than an average sheet of paper.
This cloaking technology is based on the strategy that Zhang's research group had developed to cloak nanoparticles in red blood cell membranes.
The researchers previously demonstrated that nanoparticles disguised as red blood cells are capable of removing dangerous pore-forming toxins produced by MRSA, poisonous snake bites and bee stings from the bloodstream.
Platelet copycats at work In one part of this study, researchers packed platelet-mimicking nanoparticles with docetaxel,
Researchers observed that the docetaxel-containing nanoparticles selectively collected onto the damaged sites of arteries
platelet-mimicking nanoparticles can also greatly minimize bacterial infections that have entered the bloodstream and spread to various organs in the body.
Researchers injected nanoparticles containing just one-sixth the clinical dose of the antibiotic vancomycin into one of group of mice systemically infected with MRSA bacteria.
"Our platelet-mimicking nanoparticles can increase the therapeutic efficacy of antibiotics because they can focus treatment on the bacteria locally without spreading drugs to healthy tissues
"We hope to develop platelet-mimicking nanoparticles into new treatments for systemic bacterial infections and cardiovascular disease
#Coated Silica Nanoparticles Could be used for Restorative Treatment of Sensitive Teeth Researchers at the University of Birmingham have shown how the development of coated silica nanoparticles could be used in restorative treatment of sensitive teeth
Previous attempts have used compounds of calcium fluoride, combinations of carbonate-hydroxypatite nanocrystals and bioactive glass, but all have seen limited success as they are liable to aggregate on delivery to the tubules.
the researchers from Aalto University and University of Jyväskylä have shown recently how DNA origamis can be used in efficient fabrication of custom-shaped metal nanoparticles that could be used in various fields of material sciences.
#Quantity, Dimensions of Carbon black Nanoparticles Crucial for Lithium-Ion Battery Function A Stanford undergraduate has contributed to a discovery that confounds the conventional wisdom in lithium-ion battery design,
Prior to the team's research, the quantity and dimensions of the carbon black nanoparticles weren't considered particularly crucial to a battery's function."
To this end, the scientists created a multilayer sandwich material with alternating layers of ultrathin phosphatoantimonate nanosheets and silicon dioxide (Sio2) or titanium dioxide nanoparticles (Tio2.
and oxide nanoparticles is highly stable from a chemical perspective and responds selectively to water vapour. A layer protecting against chemical influences has to let moisture through The scientists can imagine their materials being used in much more than just future generations of smartphones, tablets or notebooks. ltimately,
#Researchers Enhance Efficiency of Ultrathin CIGSE Solar cells Using Nanoparticles Now, scientists at Helmholtz-Zentrum Berlin have produced high quality ultrathin CIGSE layers
and increased their efficiency by an array of tiny nanoparticles between the back contact and the active layer.
Nanoparticles with sizes the order of a wavelength interact with light in specific ways. A young investigator group at Helmholtz-Zentrum Berlin, led by Professor Martina Schmid,
is inquiring how to use arrangements of such nanoparticles to improve solar cells and other optoelectronic devices.
He then started to enquire how to implement nanoparticles between different layers of the solar cell.
They proposed to produce arrays of dielectric nanoparticles by nanoimprinting technologies. No big effect by nanoparticles on topin a first step, the colleagues in Amsterdam implemented a pattern of dielectric Tio2-nanoparticles on top of Yin ultrathin solar cells;
the idea was that they would act as light traps and increase absorption in the CIGSE layer.
a nanoparticle array not on top but at the back contact of the cell! Nanoparticles at the back contact:
effiency increases to 12.3%The colleagues from Amsterdam produced an array of Sio2 nanoparticles, directly on the Molybdenum substrate
which corresponds to the back contact of the solar cell. On top of this structured substrate the ultrathin CIGSE layer was grown by Yin,
With additional anti-reflective nanoparticles at the front efficiencies raised even to 13.1%.%Light trapping and prevention of charge carrier losshis leads to efficient light trapping
Further studies indicate that the nanoarray of dielectric Sio2 nanoparticles at the back side could also increase efficiency by reducing chances for charge carrier recombination. his work is just a start,
thus increasing efficiencies by making use of optical and electrical benefits of the nanoparticles, Martina Schmid says M
#Archaeal Gas Vesicle Nanoparticles Hold Potential to Develop Powerful Malaria Vaccine In a recent breakthrough to combat malaria,
when displayed on novel nanoparticles. This approach has the potential to prevent the parasite from multiplying in the human host
Shiladitya Dassarma's laboratory at the University of Maryland School of medicine, Baltimore, USA, who has developed Archaeal gas vesicle nanoparticles (GVNPS.
The small unique segment of enolase was fused genetically to a nanoparticle protein and this conjugated system was used to vaccinate mice.
Its pages contain nanoparticles of silver or copper, which kill bacteria in the water as it passes through.
or copper ions-depending on the nanoparticles used-as they percolate through the page.""Ions come off the surface of the nanoparticles,
and those are absorbed by the microbes, "Dr Dankovich explained. According to her tests, one page can clean up to 100 litres of water.
Its pages contain nanoparticles of silver or copper, which kill bacteria in the water as it passes through.
or copper ions-depending on the nanoparticles used-as they percolate through the page.""Ions come off the surface of the nanoparticles,
and those are absorbed by the microbes, "Dr Dankovich explained. According to her tests, one page can clean up to 100 litres of water.
#New Nanoparticles Clean the Environment, Drinking water Nanoparticles are between 1 and 100 nanometers in size.
With the help of nanoparticles and UV light removal of these toxins could be less expensive and time-consuming than current methods.
How it works The nanoparticles are prepared from molecules (synthetic macromolecules commonly called plastics) that have a protective,
When this happens on a nanoparticle, its protecting corona is removed and only the hydrophobic core remains.
with more than 95 percent of the nanoparticles removed from the water. When the nanoparticle loses its protective layer,
polymers are released into the water. While the polymer released (polyethylene glycol) is recognized as safe and used in various food, pharmaceutical and cosmetics products,
Bertrand nanoparticles have compared benefits with current purification processes. Some current techniques rely on chemical degradation of pollutants,
the nanoparticles float passively in the fluid until we precipitate them. Current water purification infrastructures have UV irradiation systems optimized to kill bacteria,
this irradiation is more than sufficient to precipitate our nanoparticles, Bertrand explained. Bertrand told Laboutlook that one fundamental observation from this work is that small molecules passively absorb on the surface of the nanoparticle,
and that the amounts absorbed correlate with the surface-to-volume ratio, meaning more absorption occurs on small nanoparticles. his is an important consideration for drug delivery
because it could explain what happens with nanoparticles with high drug encapsulation and extensive burst release.
Harnessing nanoparticles in Africa Theresa Dankovich uses nanotechnology to purify drinking water in Africa. By filtering water through paper embedded with silver or copper nanoparticles,
99.9 percent water purity is achievable. She calls it he Drinkable Book. Silver nanoparticles eliminate a wide variety of microorganisms,
including bacteria and some viruses . While some silver and copper will seep from the nanoparticle-coated paper,
the amount is said minimal, Dankovich, and is well below limits for metals put in place by the Environmental protection agency and World health organization.
Dankovich nonprofit company page Drinking Paper, works together with the nonprofit WATERISLIFE to produce a book of this nanoparticle-embedded paper,
which is put in a special holding device that water is filtered then through. One page can filter 26 gallons of drinking water;
Drug delivery and beyond The power of nanoparticles is also being harnessed to fight life-threatening lung diseases, such as cystic fibrosis.
Researchers at Johns hopkins university School of medicine, Johns hopkins university Department of Chemical and Biomolecular engineering and Federal University of Rio de janeiro in Brazil conducted a proof-of-concept study that found DNA-loaded nanoparticles could successfully pass through the hard-to-breach mucus barrier
Other attempts to penetrate the barrier with nanoparticles were unsuccessful because they possessed a positive charge that caused them to be tickyand adhere to the negatively charged mucus covering the airways.
To circumvent this problem the team developed a simple method to densely coat the nanoparticles with a nonsticky polymer called PEG,
or drugs inside a man-made biodegradable nanoparticle rapperthat patients inhale could penetrate the mucus barrier
stopped brain cancer in rats by delivering gene therapy through nanoparticles. The nanoparticles deliver genes for an enzyme that converts a prodrug called ganciclovir into a glioma cell killer.
There is no reliable treatment for glioma which has a 5-year survival rate of 12 percent.
Although their nanoparticle technology is solid, some challenges remain before it can be implemented in an industrial application.
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