nanoparticles

Nanoparticles

Dna nanoparticle (1)
Gold nanoparticle (7)
Inorganic nanoparticle (5)
Magnetic nanoparticle (2)
Metal nanoparticle (19)
Nanocrystal (3)
Nanoparticle (209)
Nanoparticle technology (1)
Nanoparticle treatment (1)
Oxide nanoparticle (2)
Silver nanoparticle (10)
Zinc oxide nanoparticle (1)

and other goods. The Flexpakrenew research team developed a number of new techniques that use renewable materials reinforced with nanoparticles and innovative coatings.

and then used it to move nanoparticles of cadmium disulfide along the length of a nanotube.

The nanoparticle is fluorescent in visible light and the nanotubes are fluorescent in the near-infrared.

However nanoparticles and other delivery methods now being developed for DNA and RNA could prove more effective in targeting other organs Sharp says.

the researchers embedded them with cerium oxide nanoparticles, also known as nanoceria. These particles are very strong antioxidants that scavenge oxygen radicals

and used a technique called vascular infusion to deliver nanoparticles into Arabidopsis thaliana, a small flowering plant.

the researchers applied a solution of nanoparticles to the underside of the leaf, where it penetrated tiny pores known as stomata,

What is the impact of nanoparticles on the production of chemical fuels like glucose? Giraldo says.

a professor of biomedical engineering at Boston University who was involved not in the research. he authors nicely show that self-assembling nanoparticles can be used to enhance the photosynthetic capacity of plants,

#New study shows how nanoparticles can clean up environmental pollutants Many human-made pollutants in the environment resist degradation through natural processes,

researchers from MIT and the Federal University of Goiás in Brazil demonstrate a novel method for using nanoparticles

They initially sought to develop nanoparticles that could be used to deliver drugs to cancer cells. Brandl had synthesized previously polymers that could be cleaved apart by exposure to UV LIGHT.

Nanoparticles made from these polymers have a hydrophobic core and a hydrophilic shell. Due to molecular-scale forces

in a solution hydrophobic pollutant molecules move toward the hydrophobic nanoparticles, and adsorb onto their surface,

according to the researchers, was confirming that small molecules do indeed adsorb passively onto the surface of nanoparticles. o the best of our knowledge,

it is the first time that the interactions of small molecules with preformed nanoparticles can be measured directly,

we showed in a system that the adsorption of small molecules on the surface of the nanoparticles can be used for extraction of any kind,

#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 the biochar nanoparticles can create an extremely large surface area which can then hold more charge.

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.

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

and Complexity have succeeded in developing a new technology that introduces metal nanoparticles on the surface of polymer nanocapsules made of cucurbit 6 uril.

and metal salts can serve as a versatile platform where equal sized metal nanoparticles can be distributed evenly on the surface of the polymer nanocapsules.

which can stabilize metal nanoparticles by preventing them from clustering together. The metal nanoparticle-decorated polymer nanocapsules exhibit the following properties in water:

high stability for up to 6 months; high dispersibility; excellent catalytic activity; and reusability in carbon-carbon and carbon-nitrogen bond-forming reactions with 100%conversion efficiency.

Even though metal nanoparticles are used variously in industrial, pharmaceutical and agricultural (fertilizer) applications as a catalyst, toxic liquids such as toluene and hexane are used usually as solvents in the carbon-carbon

However, this new technology is able to replace those toxic liquids as it allows carbon-carbon and carbon-nitrogen bond-formation with the use of metal nanoparticles as a catalyst

and reusability in water, which other existing metal nanoparticles on solid supports have not been able to do,

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

#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. sing mouse models,

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,

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

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.

#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 worksthe 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. arnessing nanoparticles in Africatheresa 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 beyondthe 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.

#Sandcastles inspire new nanoparticle binding technique Abstract:""Nanocapillary-mediated magnetic assembly of nanoparticles into ultraflexible filaments and reconfigurable networks"Authors:

Bhuvensh Bharti and Orlin D. Velev, North carolina State university; Anne-Laure Fameau, National Institute of French Agricultural research;

Here, we show that capillarity-mediated binding between magnetic nanoparticles coated with a liquid lipid shell can be used for the assembly of ultraflexible microfilaments and network structures.

These filaments can be regenerated magnetically on mechanical damage, owing to the fluidity of the capillary bridges between nanoparticles and their reversible binding on contact.

If you want to form very flexible chains of nanoparticles in liquid in order to build tiny robots with flexible joints or make magnetically self-healing gels,

researchers from North carolina State university and the University of North carolina-Chapel hill show that magnetic nanoparticles encased in oily liquid shells can bind together in water,

"We then add a magnetic field to arrange the nanoparticle chains and provide directionality, "said Bhuvnesh Bharti,

and makes the bridges fragile, leading to breaking and fragmentation of the nanoparticle chains. Yet the broken nanoparticles chains will reform

if the temperature is raised, the oil liquefies and an external magnetic field is applied to the particles."

Process uses light-harvesting nanoparticles, captures energy from'hot electrons'September 5th, 201 0

#First realization of an electric circuit with a magnetic insulator using spin waves Abstract: Researchers at the University of Groningen, Utrecht University, the Universit de Bretagne Occidentale and the FOM Foundation have found that it is possible to make an electric circuit with a magnetic insulator.

acids, solid metal nanoparticles, and large protein molecules or enzymes in human bodies. Ninety percent of industrially important chemicals are made using catalysts.

made with bioadhesive nanoparticles, that stays on the surface of the skin. Results of the research appear in the Sept. 28 online edition of the journal Nature Materials("A sunblock based on bioadhesive nanoparticles".

"The merged images from rows two and three of this figure show two images of skin cells showing DNA damage in the form of double-strand breaks in sunscreen-treated, UV

exposed skin vs nanoparticle-treated, UV exposed skin. We found that when we apply the sunblock to the skin,

Nanoparticles are large enough to keep from going through the skins surface, and our nanoparticles are so adhesive that they dont even go into hair follicles,

which are relatively open. Using mouse models, the researchers tested their sunblock against direct ultraviolet rays and their ability to cause sunburn.

UV exposed skin vs nanoparticle-treated, UV exposed skin. The merged images from rows two and three of this figure show two images of skin cells showing DNA damage in the form of double-strand breaks in sunscreen-treated, UV

exposed skin vs nanoparticle-treated, UV exposed skin. Girardi, who specializes in skin cancer development and progression, said little research has been done on the ultimate effects of sunblock usage and the generation of ROS,

the researchers developed a nanoparticle with a surface coating rich in aldehyde groups, which stick tenaciously to the outer skin layer.

The nanoparticles 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,

#DNA nanofoundries cast custom-shaped metal nanoparticles Researchers at the Wyss Institute for Biologically Inspired Engineering at Harvard university have unveiled a new method to form tiny 3d metal nanoparticles in prescribed shapes

The ability to mold inorganic nanoparticles out of materials such as gold and silver in precisely designed 3d shapes is a significant breakthrough that has the potential to advance laser technology microscopy solar cells electronics environmental testing disease

We built tiny foundries made of stiff DNA to fabricate metal nanoparticles in exact three-dimensional shapes that we digitally planned

The paper's findings describe a significant advance in DNA NANOTECHNOLOGY as well as in inorganic nanoparticle synthesis Yin said.

For the very first time a general strategy to manufacture inorganic nanoparticles with user-specified 3d shapes has been achieved to produce particles as small as 25 nanometers or less with remarkable precision (less than 5 nanometers.

The 3d inorganic nanoparticles are conceived first and meticulously planned using computer design software. Using the software the researchers design three-dimensional frameworks of the desired size

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.

#Nanoparticles and UV LIGHT Clean up Environmental Pollutants A new study from MIT shows how nanoparticles can clean up environmental pollutants,

researchers from MIT and the Federal University of Goiás in Brazil demonstrate a novel method for using nanoparticles

They initially sought to develop nanoparticles that could be used to deliver drugs to cancer cells. Brandl had synthesized previously polymers that could be cleaved apart by exposure to UV LIGHT.

Nanoparticles made from these polymers have a hydrophobic core and a hydrophilic shell. Due to molecular-scale forces

in a solution hydrophobic pollutant molecules move toward the hydrophobic nanoparticles, and adsorb onto their surface,

according to the researchers, was confirming that small molecules do indeed adsorb passively onto the surface of nanoparticles. o the best of our knowledge,

it is the first time that the interactions of small molecules with preformed nanoparticles can be measured directly,

we showed in a system that the adsorption of small molecules on the surface of the nanoparticles can be used for extraction of any kind,

#Researchers Use Synthetic Strands of DNA to Create Nanoparticle Clusters and Arrays The study has been described in the journal Nature Nanotechnology.

The method resulted in arrays and clusters of nanoparticles, which represent a major milestone for designing materials with customized functions and structures for applications in medicine, optics, and energy.

These arrays of nanoparticles with predictable geometric configurations are somewhat analogous to molecules made of atoms.

there has been no easy way to impose such a specific spatial binding scheme on nanoparticles.

According to the researchers, the novel technique would allow them to organize the arrangements of a variety of nanoparticles

The researchers designed the nanoparticle architectures by means of an octahedral scaffold, with particles placed in accurate locations on the scaffold as per the specificity of DNA coding.

which multiple nanoparticles of different structures and functions can be integrated,""stated Ye Tian, CFN scientist and one of the lead authors of the paper.

In order to attach the nanoparticles to the 3d frames, the researchers designed each of the six-helix bundles in such a way that a single helix had an additional piece of single stranded-dna DNA sticking out from either ends.

When nanoparticles coated with single strand tethers are mixed with the DNA origami octahedrons the'free'pieces of DNA find one another so the bases can pair up according to the rules of the DNA complementarity code.

and the strands were fixed with a complementary sequence to gold nanoparticles. This resulted is a single gold nanoparticle fixed to individual octahedron's six vertices.

In further experiments the sequence of certain vertices was altered and complementary strands were utilized on a range of particles.

This is because the DNA molecules and nanoparticles, which constitute the frames, exhibit different densities. While some microscopy methods can show the particles alone

The images thus obtained showed that the new method used to direct the placement of nanoparticles on DNA-encoded vertices of molecular frames can prove to be effective for designing new nanomaterials.

We show that CRYO EM can be applied successfully to probe the 3d structure of DNA NANOPARTICLE clusters,

#Gold nanoparticle Coating on Cotton Fibers Can Help Kill Bacteria Juan Hinestroza and his students live in a cotton-soft nano world,

Taking advantage of cotton irregular topography, Hinestroza and his students added conformal coatings of gold nanoparticles,

Synthesizing nanoparticles and attaching them to cotton not only creates color on fiber surfaces without the use of dyes,

#Silver-Ion Infused Lignin Nanoparticles Effectively Kill Bacteria Orlin Velev, an engineer at NC State engineer,

The silver-ion infused lignin nanoparticles, coated with a layer of charged polymer that aids the particles to stick to the target microbes,

When the targeted bacteria are wiped out by nanoparticles, silver gets depleted from these particles. Upon disposal, the rest of the particles also degrade easily due to their biocompatible lignin core.

People have been interested in using silver nanoparticles for antimicrobial purposes, but there are lingering concerns about their environmental impact due to the long-term effects of the used metal nanoparticles released in the environment.

We show here an inexpensive and environmentally responsible method to make effective antimicrobials with biomaterial cores.

The nanoparticles infused with silver ions were utilized to attack Pseudomonas aeruginosa, disease-causing bacteria; E coli, a bacterial species that cause food poisoning;

All these bacteria were destroyed by the newly developed nanoparticles. Using this latest technique, researchers can easily modify the nanoparticle recipe to target certain microbes.

According to Alexander Richter, first author of the paper and a Ph d. candidate at NC State who received the 2015 Lemelson-MIT prize,

the nanoparticles can form the basis for developing pesticide products that reduce risk, have minimal environmental impact,

#Novel Method Utilizes Nanoparticles and UV LIGHT to Isolate, Extract Contaminants In a new paper published this week in Nature Communications,

researchers from MIT and the Federal University of Goiás in Brazil demonstrate a novel method for using nanoparticles

They initially sought to develop nanoparticles that could be used to deliver drugs to cancer cells. Brandl had synthesized previously polymers that could be cleaved apart by exposure to UV LIGHT.

Nanoparticles made from these polymers have a hydrophobic core and a hydrophilic shell. Due to molecular-scale forces

in a solution hydrophobic pollutant molecules move toward the hydrophobic nanoparticles, and adsorb onto their surface,

according to the researchers, was confirming that small molecules do indeed adsorb passively onto the surface of nanoparticles. o the best of our knowledge,

it is the first time that the interactions of small molecules with preformed nanoparticles can be measured directly,

we showed in a system that the adsorption of small molecules on the surface of the nanoparticles can be used for extraction of any kind,

but is, thanks to metal nanoparticles that can squeeze light into small volumes. These tiny lasers are promising light sources that can be used to send

Construction of our nanolaser required precise control over the shape and location of the adjacent gold nanoparticles.

#Environmentally friendly lignin nanoparticle'greens'silver nanobullet to battle bacteria Researchers have developed an effective and environmentally benign method to combat bacteria by engineering nanoscale particles that add the antimicrobial potency of silver to a core of lignin,

Environmentally friendly lignin nanoparticle'greens'silver nanobullet to battle bacteria In a study being published in Nature Nanotechnology July 13,

North carolina State university engineer Orlin Velev and colleagues show that silver-ion infused lignin nanoparticles, which are coated with a charged polymer layer that helps them adhere to the target microbes,

As the nanoparticles wipe out the targeted bacteria, they become depleted of silver. The remaining particles degrade easily after disposal because of their biocompatible lignin core,

"People have been interested in using silver nanoparticles for antimicrobial purposes, but there are lingering concerns about their environmental impact due to the long-term effects of the used metal nanoparticles released in the environment,

"said Velev, INVISTA Professor of Chemical and Biomolecular engineering at NC State and the paper's corresponding author."

"The researchers used the nanoparticles to attack E coli, a bacterium that causes food poisoning; Pseudomonas aeruginosa, a common disease-causing bacterium;

The nanoparticles were effective against all the bacteria. The method allows researchers the flexibility to change the nanoparticle recipe in order to target specific microbes.

Alexander Richter, the paper's first author and an NC State Ph d. candidate who won a 2015 Lemelson-MIT prize,

As the nanoparticles wipe out the targeted bacteria, they become depleted of silver. The remaining particles degrade easily after disposal because of their biocompatible lignin core,

"said Velev, INVISTA Professor of Chemical and Biomolecular engineering at NC State and the paper's corresponding author."

"The researchers used the nanoparticles to attack E coli, a bacterium that causes food poisoning; Pseudomonas aeruginosa, a common disease-causing bacterium;

The nanoparticles were effective against all the bacteria. The method allows researchers the flexibility to change the nanoparticle recipe in order to target specific microbes.

Alexander Richter, the paper's first author and an NC State Ph d. candidate who won a 2015 Lemelson-MIT prize,

Carbon nanoparticles you can make at home Abstract: Researchers have found an easy way to produce carbon nanoparticles that are small enough to evade the body's immune system,

reflect light in the near-infrared range for easy detection, and carry payloads of pharmaceutical drugs to targeted tissues.

Unlike other methods of making carbon nanoparticles-which require expensive equipment and purification processes that can take days-the new approach generates the particles in a few hours

but that is nanoparticles with high luminescence. This is one of the simplest systems that we can think of.

The nanoparticles are coated with polymers that fine-tune their optical properties and their rate of degradation in the body.

The nanoparticles also can be made quite small, less than eight nanometers in diameter (a human hair is 80,000 to 100,

"The team tested the therapeutic potential of the nanoparticles by loading them with an anti-melanoma drug

Bhargava's laboratory used vibrational spectroscopic techniques to identify the molecular structure of the nanoparticles and their cargo."

"The team found that the nanoparticles did not release the drug payload at room temperature, but at body temperature began to release the anticancer drug.

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