Most other investigators who have studied the remarkable properties of microscopic spirals have done so by arranging discrete nanoparticles in a spiral pattern:
2015dna Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015discoveries Tissue Engineering Scaffolds Produced from Natural Silk in Iran June 8th,
2015uab researchers design the most precise quantum thermometer to date: The device would be capable of measuring the temperature of a cell's interior June 7th,
"The size of pores decreases due to the presence of alumina ceramic nanoparticles in the synthesis of the nanocomposite scaffold.
A route to developing ultimate superconducting nanodevices June 2nd, 2015self Assembly Researchers simulate behavior of'active matter'June 3rd, 2015engineering Phase changes in Nanoparticle Arrays:
combined diamond nanoparticles, small patches of graphene-a two-dimensional single-sheet form of pure carbon-and a diamond-like carbon material to create superlubricity, a highly-desirable property in
Techconnect is the world's largest accelerator for industry-vetted emerging-technologies ready for commercialization June 11th, 2015synthesis of Special Nanoparticles in Iran to Increase MRI Contrast June 11th, 2015investigation of Optical
"Perhaps the first target for applying this new HRSEM surface analytic technique will be the study of surface structures on the facets of nanoparticles.
The surface structures of nanoparticle facets are extremely challenging to image in the plan view (seen from above) using electron microscopy,
since scanning probe techniques cannot usually address nanoparticle surfaces at atomic resolution, and surface X-ray diffraction requires large, single crystal surfaces."
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.
Techconnect is the world's largest accelerator for industry-vetted emerging-technologies ready for commercialization June 11th, 2015synthesis of Special Nanoparticles in Iran to Increase MRI Contrast June 11th,
2015nanomedicine Nanoparticle'wrapper'delivers chemical that stops fatty buildup in rodent arteries Experimental therapy restores normal fat metabolism in animals with atherosclerosis June 23rd, 2015picosun ALD
2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers Nanoparticle'wrapper'delivers chemical that stops fatty buildup in rodent arteries Experimental therapy restores normal fat metabolism
Carbon nanoparticles you can make at home June 18th, 201 0
#Biomanufacturing of Cds quantum dots: A bacterial method for the low-cost, environmentally-friendly synthesis of aqueous soluble quantum dot nanocrystals Abstract:
In this research, biocompatible nanoparticles based on zinc oxide were synthesized through green chemistry standards. Carrying out all reactions in the green solvent of water
"This gives us unparalleled insight into nanoparticle structure and would be impossible to achieve without combining two complementary operando techniques."
a focused electron beam passes through the sample and captures images of the nanoparticles within.
chemotherapy packed nanoparticles may target cancer stem cells June 30th, 2015graphene flexes its electronic muscles: Rice-led researchers calculate electrical properties of carbon cones, other shapes June 30th,
"##Guo focuses much of his work on the use of ribonucleic acid (RNA) nanoparticles and a viral nanomotor to fight cancer, viral infections and genetic diseases.
He is well-known for his pioneering work of constructing RNA nanoparticles as drug carriers. Guo's research team also includes Dan Shu, Farzin Haque, Mario Vieweger, Fengmei Pi, Hui Zhang, Yi Shu, Chi Wang, Peng Zhang, Ashwani
#Environmentally friendly lignin nanoparticle'greens'silver nanobullet to battle bacteria Abstract: Silver nanoparticles have antibacterial properties,
Here, we show that lignin nanoparticles infused with silver ions and coated with a cationic polyelectrolyte layer form a biodegradable and green alternative to silver nanoparticles.
Ion depletion studies have shown that the bioactivity of these nanoparticles is limited time because of the desorption of silver ions.
Our results demonstrate that the application of green chemistry principles may allow the synthesis of nanoparticles with biodegradable cores that have higher antimicrobial activity and smaller environmental impact than metallic silver nanoparticles.
NC State 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,
"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,
#Nanospheres shield chemo drugs, safely release high doses in response to tumor secretions Scientists have designed nanoparticles that release drugs in the presence of a class of proteins that enable cancers to metastasize.
In mice treated with the nanoparticles coated with peptides that are impervious to MMPS or given saline,
2015chemotherapeutic coatings enhance tumor-frying nanoparticles: Duke university researchers add a drug delivery mechanism to a nanoparticle therapy already proven to target,
heat and destroy tumors July 13th, 2015super graphene can help treat cancer July 10th, 2015govt. -Legislation/Regulation/Funding/Policy Researchers Build a Transistor from a Molecule and A few Atoms July 14th, 2015world first:
2015chemotherapeutic coatings enhance tumor-frying nanoparticles: Duke university researchers add a drug delivery mechanism to a nanoparticle therapy already proven to target,
heat and destroy tumors July 13th, 2015magnetic hyperthermia, an auxiliary tool in cancer treatments July 8th, 2015discoveries For faster,
"The key to this research is the hybrid composite material--combining inorganic semiconductor nanoparticles with organic compounds.
However, the heterogeneous distribution of nanoparticles in the structure of the membrane polymer can be considered as an important problem.
The surface of nanoparticles was coated with polystyrene sulfonate as a new approach to improve the homogenous distribution of nanoparticles in polymer.
This method significantly affects the distribution of nanoparticles in the membrane polymer and it modifies the structure and the separation performance.
#Perfect Optical Properties in Production of Aluminum oxide Colloid Nanoparticles Iranian researchers produced nanoparticles in forms of colloids which have very good optical properties and conserve their stability for a long time.
Perfect Optical Properties in Production of Aluminum oxide Colloid Nanoparticles Aluminum oxide colloid nanoparticles have applications in various fields
The large difference between surface and volume energy of nanoparticles is the cause of this problem.
The produced nanoparticles have very high stability and appropriate optical properties and they can be used in the production of optical devices.
Taking into account the desirable optical properties of the produced nanoparticles, it is expected that an important step is taken in the development of nanotechnology in the field of medicine,
and obtaining mass-production of these nanoparticles. Results of the research have been published in Journal of the American Ceramic Society,
#Surface-modified nanoparticles endow coatings with combined properties Fabricators and processors alike demand consistently high quality for their intermediate and final products.
The INM Leibniz Institute for New Materials uses nanoparticles as design element for such multifunctional coatings.
These nanoparticles are adapted specifically to the particular application by Small Molecule Surface Modification (SMSM. How this approach can be used to produce custom-tailored coatings will be demonstrated at the Techconnect World trade fair on 15 and 16 june in WASHINGTON DC, USA,
the nanoparticles used can be modified surface with organic moieties. Small Molecule Surface Modification (SMSM) bestows specific combinations of desired properties, for example hydrophilic, hydrophobic, adhesive, anti-adhesive
Nanoparticles thus modified are used to develop nanocomposites: they combine the physical solid-state properties of e g. ceramics or semiconductors with classic polymer-processing technology.
Titanium dioxide, barium titanate, indium-tin oxide or zirconium dioxide, for instance, are used as nanoparticles. In addition to the chemical intrinsic composition of the nanoparticles and their SMSM surface treatment, the properties that are attainable for the desired coatings also vary with the size and dispersal mode of the nanoparticles.
INM composite systems are produced via wet-chemical processes. The modified nanoparticles and additives combine with a polymer matrix (an epoxy resin, an acrylate,
a polyimide for example) or a hybrid matrix (organic-inorganic) to produce a coatable Nanomer composite system. he modular principle makes it possible to achieve a number of properties at one
Surface-modified nanoparticles endow coatings with combined propertie e
#Nano-spirals could guard against identity theft (Nanowerk News) Take gold spirals about the size of a dimeand shrink them down about six million times.
Most other investigators who have studied the remarkable properties of microscopic spirals have done so by arranging discrete nanoparticles in a spiral pattern:
Although some successful examples of the incorporation of these complexes into micro/nanoparticles and liquids crystals have been reported during the last years,
The discoveries published in the journal ACS Nano("Bio-Inspired Structural Colors Produced via Self-Assembly of Synthetic Melanin Nanoparticles")reflect a milestone in biomimicry research.
simple process for making platinum"nano-raspberries"microscopic clusters of nanoscale particles of the precious metal("Stability and phase transfer of catalytically active platinum nanoparticle suspensions").
"Colorized micrographs of platinum nanoparticles made at NIST. The raspberry color suggests the particles? corrugated shape,
Nanoparticles can act as catalysts to help convert methanol to electricity in fuel cells. NIST's 40-minute process for making nano-raspberries, described in a new paper,*has several advantages.
For fuel cells, nanoparticles often are mixed with solvents to bind them to an electrode. To learn how such formulas affect particle properties,
Because the nanoparticles clumped up slowly and not too much in methanol, the researchers concluded that the particles could be transferred to that solvent,
It is made from gelatin-based biomaterials reinforced with nanoparticles and seeded with cells, and it mimics the anatomical microenvironment of lymphoid tissue.
The engineers reinforced the material with silicate nanoparticles to keep the structure from melting at the physiologically relevant temperature of 98.6 degrees.
"Perhaps the first target for applying this new HRSEM surface analytic technique will be the study of surface structures on the facets of nanoparticles.
The surface structures of nanoparticle facets are extremely challenging to image in the plan view (seen from above) using electron microscopy,
since scanning probe techniques cannot usually address nanoparticle surfaces at atomic resolution, and surface X-ray diffraction requires large, single crystal surfaces."
Once the researchers designed these ntelligent insulin nanoparticles, they had to figure out a way to administer them to patients with diabetes.
Gu created these icroneedlesusing the same hyaluronic acid that was a chief ingredient of the nanoparticles,
#Nanoparticle'wrapper'delivers chemical that stops fatty buildup in rodent arteries In what may be a major leap forward in the quest for new treatments of the most common form of cardiovascular disease,
and reverse the progression of atherosclerosis in rodents by loading microscopic nanoparticles with a chemical that restores the animals'ability to properly handle cholesterol.
and track the nanoparticles'movement inside the animals'bodies by tagging them with a radioactive tracer that lit up on a CT SCAN.
Because the nanoparticles carrying D-PDMP are made of a common laxative ingredient and a naturally occurring sebacic acid,
The possibility to study the optical properties of individual nanoparticles or macromolecules promises intriguing potential for many areas of biology, chemistry,
"Intuitive illustration of the new method for imaging nanoparticles. Graphic: MPQ, Laser spectroscopy Division) Spectroscopic measurements on large ensembles of nanoparticles suffer from the fact that individual differences in size, shape,
and molecular composition are washed out and only average quantities can be extracted. There is thus a large interest to develop single-particle-sensitive techniques.
one side of the resonator is made of a plane mirror that serves at the same time as a carrier for the nanoparticles under investigation.
which was reported recently in the Journal of Nanoparticle Research("Minimal geometric requirements for micropropulsion via magnetic rotation),
#Chitosan coated, chemotherapy packed nanoparticles may target cancer stem cells (Nanowerk News) Nanoparticles packed with a clinically used chemotherapy drug
This laboratory and animal study showed that nanoparticles coated with the oligosaccharide called chitosan and encapsulating the chemotherapy drug doxorubicin can target
The study is reported in the journal ACS Nano("Chitosan-Decorated Doxorubicin-Encapsulated Nanoparticle Targets and Eliminates Tumor Reinitiating Cancer Stem-like Cells").
"We believe that chitosan-decorated nanoparticles could also encapsulate other types of chemotherapy and be used to treat many types of cancer."
enabling the nanoparticles to target the malignant stem-like cells in a tumor. The nanoparticles were engineered to shrink,
break open, and release the anticancer drug under the acidic conditions of the tumor microenvironment and in tumor-cell endosomes and lysosomes,
although the drug-carrying nanoparticles could bind to the variant CD44 receptors on cancerous mammosphere cells,
Nanoparticles would then make it possible to measure with nanometre accuracy, i e. on the scale of viruses. The maximum length of the sensor fibre is currently around 400 metres,
Guo focuses much of his work on the use of ribonucleic acid (RNA) nanoparticles and a viral nanomotor to fight cancer
He is well-known for his pioneering work of constructing RNA nanoparticles as drug carriers u
Synthesizing nanoparticles and attaching them to cotton not only creates color on fiber surfaces without the use of dyes,
#The influence of surface structure on nanoparticle shape control (Nanowerk News) Peng Zhang, a professor with Dalhousies Department of chemistry,
Published this week in Nature Communications("The surface structure of silver-coated gold nanocrystals and its influence on shape control"),Zhangs teams report on the discovery of a new methodology to study nanoparticle structures.
Uncovering shape The shape of the surface of nanoparticles is key, because different shapes lead to different properties and different properties lead to different behaviours.
These nanoparticles are very difficult to study, explains Dr. Zhang, pointing out that ordinary techniques like electron microscopes dont provide the amount of detail necessary to understand whats happening on the surface of nanomaterials.
the team was able to comprehensively study the surface of a nanoparticle. In their nanomaterial system composed primarily of gold, silver and chloride,
#Environmentally friendly lignin nanoparticle'greens'silver nanobullet to battle bacteria North carolina State university researchers have developed an effective
In a study published in Nature Nanotechnology("An environmentally benign antimicrobial nanoparticle based on a silver-infused lignin core),
"NC State 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,
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 papers first author and an NC State Ph d. candidate who won a 2015 Lemelson-MIT prize,
The antibody causes the nanoparticles to attach themselves to white blood cells in a blood sample, which can be obtained by simply pricking a finger.
#Degrading BPA with visible light and a new hybrid nanoparticle photocatalyst Over the course of the last half century, BPA has gone from miracle to menace.
When light strikes a photocatalyst like titanium dioxide (Tio2) nanoparticles the jolt of energy can kick one of its electrons up to an excited state
In order to turn Tio2 nanoparticles into a better photocatalyst, the researchers made several modifications. First, they added silver to the surface of the nanoparticles,
a common technique to enhance the charge separation. When light strikes Tio2 and excites one of its electrons
Then, they wrapped the Ag/Tio2 nanoparticles in sheets of reduced graphene oxide (RGO), a thin layer of carbon atoms arranged in a honeycomb pattern.
It also reduced the nanoparticles'bandgap, decreasing the amount of energy necessary to activate the photocatalyst.
When the researchers mixed the hybrid nanoparticles with BPA solution under an artificial visible light source
Furthermore, the RGO-Ag-Tio2 nanoparticles outperformed those where RGO or Ag alone were added to the Tio2,
#New study shows how nanoparticles can clean up environmental pollutants Many human-made pollutants in the environment resist degradation through natural processes,
In a new paper published this week in Nature Communications("Nanoparticles with photoinduced precipitation for the extraction of pollutants from water and soil),
"researchers from MIT and the Federal University of Goiás in Brazil demonstrate a novel method for using nanoparticles
Nanoparticles that lose their stability upon irradiation with light have been designed to extract endocrine disruptors, pesticides,
The system exploits the large surface-to-volume ratio of nanoparticles, while the photoinduced precipitation ensures nanomaterials are released not in the environment.
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,
The fundamental breakthrough, 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,
and can aggregate into nanoparticles or micelles. Versatile nanostructures made from CO2 based polycarbonates. Wiley-VCH) CO2 and epoxides (highly reactive compounds with a three-membered ring made of two carbon atoms
and diamond nanoparticles are also incredibly slippery, which can be useful if you want to reduce friction in a moving machine.
When the diamond nanoparticles came in contact with the thin sheets of graphene (carbon that's only an atom thick) the graphene rolled up around the diamond nanoparticles,
#Gold Nano-Spirals Could Protect Against Identity Theft Most other investigators who have studied the remarkable properties of microscopic spirals have done so by arranging discrete nanoparticles in a spiral pattern:
The next steps for Méndez and her team will be modifying the commercial screen-printed electrodes with nanoparticles to make the sensors respond more clearly,
#Here's how to make carbon nanoparticles with honey and a microwave Carbon nanoparticles can be incredibly useful in the treatment of many types of disease,
as they can evade our natural immune defences and deliver medicine to wherever it's most needed in the body.
but so far creating these nanoparticles has been a long and expensive process. Now researchers at the University of Illinois in the US have found a much easier way to create a certain type of nanoparticle:
using a process that involves plain old honey and a microwave. The resulting particles are less than 8 nanometres thick (a human hair is around 80,000-100,000 nanometres)
but that is nanoparticles with high luminescence. This is one of the simplest systems that we can think of.
the microwave-produced nanoparticles are effective in delivering the drugs where they're needed, and vibrational spectroscopic techniques were used to monitor how the polymers gradually released their payload.
Different polymer coatings were tested too as the team works towards getting these'homemade'carbon nanoparticles ready for clinical use."
and nanoparticles that can be targeted to specific tumors. Recently, Mohs was awarded a $1. 37 million research grant from the National Institute of Biomedical Imaging
Under the four-year project, Mohsteam will develop nanoparticles based on hyaluronic acid, a substance naturally present in the human body.
These nanoparticles will have the ability to entrap near infrared fluorescent dyes. The research will investigate invasive ductal carcinoma, the most common type of breast cancer.
reduced the amount of nanoparticles that were being cleared by the liver and spleen by about 50 percent.
As a result, the nanoparticles remained in the blood stream for longer periods of time.
One hour later, they administered a dose of a platinum-based chemotherapy drug that had been incorporated into a nanoparticle.
It is made from gelatin-based biomaterials reinforced with nanoparticles and seeded with cells, and it mimics the anatomical microenvironment of lymphoid tissue.
The engineers reinforced the material with silicate nanoparticles to keep the structure from melting at the physiologically relevant temperature of 98.6 degrees.
"It appears that they form uranium nanoparticles, "he said, but the mineralogy is still not well known
#Novel microscope for nanosystems LMU/MPQ-scientists can image the optical properties of individual nanoparticles with a novel microscope.
The possibility to study the optical properties of individual nanoparticles or macromolecules promises intriguing potential for many areas of biology, chemistry, and nanoscience.
Spectroscopic measurements on large ensembles of nanoparticles suffer from the fact that individual differences in size, shape,
one side of the resonator is made of a plane mirror that serves at the same time as a carrier for the nanoparticles under investigation.
Korean Scientists at the Center for Nanoparticle Research, Institute for Basic Science (IBS) in Seoul,
and Bioengineering have designed a nanoparticle transport system for gene delivery that destroys deadly brain gliomas in a rat model,
The nanoparticles are filled with genes for an enzyme that converts a prodrug called ganciclovir into a potent destroyer of the glioma cells.
"The ability to successfully deliver genes using these biodegradable nanoparticles, rather than potentially harmful viruses, is a significant step that reinvigorates the potential for gene therapy to treat deadly gliomas as well as other cancers."
Biodegradable nanoparticles have shown recently promise as a method to deliver genes into cells. Their use for delivery avoids many of the problems associated with viral gene delivery.
the first goal of the group was to develop a nanoparticle that could efficiently carry DNA encoding a gene known as HSVTK into cells.
the HSVTK-encoding nanoparticles were 100%effective in killing both of the glioma cell lines grown in the laboratory.
Because it is important that the nanoparticles spread throughout the entire tumor, they were infused into the rat gliomas using convection-enhanced delivery (CED).
which efficiently disperses the nanoparticles throughout the tumors. To test the tumor-killing ability of the system,
then CED was used to infuse the HSVTK-encoding nanoparticles into the rat gliomas, and systemic ganciclovir treatment continued for eight more days.
and whether the nanoparticles could be administered successfully systemically --which could broaden the use of the therapy for a wide range of solid tumors and systemic cancers s
#Nanospheres shield chemo drugs, safely release high doses in response to tumor secretions Scientists have designed nanoparticles that release drugs in the presence of a class of proteins that enable cancers to metastasize.
In mice treated with the nanoparticles coated with peptides that are impervious to MMPS or given saline,
#Nanoparticles used to prevent inflammatory acne through slow-released nitric oxide GW researcher and dermatologist, Adam Friedman, M d,
This research, published in the Journal of Investigative Dermatology, identified that the nanoparticles were effective at killing Proprionobacterium acnes,
which the nanoparticles could be a new way to tackle Acne, one of the most common dermatologic diseases affecting between 40-50 million people each year.
"Given the advent of computing resources like Aurora and the wide gamut of the available two-dimensional materials and nanoparticle types,
#Engineering Phase changes in Nanoparticle Arrays Scientists at the U s. Department of energy Brookhaven National Laboratory have taken just a big step toward the goal of engineering dynamic nanomaterials
In a paper appearing innature Materials, they describe a way to selectively rearrange the nanoparticles in three-dimensional arrays to produce different configurations,
Introducing eprogrammingdna strands into an already assembled nanoparticle array triggers a transition from a other phase,
Such phase-changes could potentially be used to switch a material properties on demand. ne of the goals in nanoparticle self-assembly has been to create structures by design,
DNA-directed rearrangementthis latest advance in nanoscale engineering builds on the team previous work developing ways to get nanoparticles to self-assemble into complex composite arrays,
they started with an assembly of nanoparticles already linked in a regular array by the complementary binding of the A t, G,
or a combination of these forces between particles. e know that properties of materials built from nanoparticles are strongly dependent on their arrangements,
the reprogramming DNA strands adhere to open binding sites on the already assembled nanoparticles. These strands exert additional forces on the linked-up nanoparticles. y introducing different types of reprogramming DNA strands,
we modify the DNA shells surrounding the nanoparticles, explained CFN postdoctoral fellow Yugang Zhang, the lead author on the paper. ltering these shells can selectively shift the particle-particle interactions,
either by increasing both attraction and repulsion, or by separately increasing only attraction or only repulsion.
the team demonstrated that they could switch their original nanoparticle array, the otherphase, into multiple different daughter phases with precision control.
and accompanying theoretical analysis confirm that reprogramming DNA-mediated interactions among nanoparticles is a viable way to achieve this goal. ource:
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