Instead, silicon nanopillars are arranged precisely into a honeycomb pattern to create a etasurfacethat can control the paths and properties of passing light waves.
a microdevices engineer at JPL and co-author of a new Nature Nanotechnology study describing the devices. urrently,
The researchers fabricated the acoustic cell sorter in Penn State Nanofabrication Laboratory using standard lithography techniques. ust like using a lens to focus light,
#Gallium nitride and Sol-Gel Transistors to Change Electronics and Energy consumption August 5, 2015-Graphene is seen as a material that is altering our technical world.
Called sol-gel thin film, it is made up of a single layer of silicon atoms and a nanoscale self-assembled layer of octylphosphonic acid.
2015-Graphene is seen as a material that is altering our technical world. But it isn't alone.
In a two-step surface-coating process they chemically attached a monolayer of perfluorocarbon which is similar to Teflon.
#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.
A sheet of paper is approximately 100000 nanometers thick. 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 shape built from linear DNA sequences
It is this ability to design arbitrary nanostructures using DNA manipulation that inspired the Wyss team to envision using these DNA structures as practical foundries or molds for inorganic substances.
Just as any expanding material can be shaped inside a mold to take on a defined 3d form the Wyss team set out to grow inorganic particles within the confined hollow spaces of stiff DNA NANOSTRUCTURES.
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.
For particles that would better serve their purpose by being as electrically conducive as possible such as in very small nanocomputers
and re-imagined for the nanomanufacturing of inorganic materials said Don Ingber Wyss Institute founding director.
#Smallest world record has ndless possibilitiesfor bionanotechnology Scientists from the University of Leeds have taken a crucial step forward in bionanotechnology a field that uses biology to develop new tools for science technology and medicine.
Importantly, the new technique can use these lipid membranes to'draw'--akin to using them like a biological ink--with a resolution of 6 nanometres (6 billionths of a meter
which is an imaging process that has a resolution down to only a fraction of a nanometer
in order to create nanostructures and to'draw'substances onto nano-sized regions. The latter is called'nanolithography 'and was used the technique by Evans and his team in this research.
The ability to controllably'write 'and'position'lipid membrane fragments with such high precision was achieved by George Heath,
t similar with things like sugars and for much bigger macromolecules such as DNA. People will be familiar with the double helix
#Nanoparticles and UV LIGHT Clean up Environmental Pollutants A new study from MIT shows how nanoparticles can clean up environmental pollutants,
revealing that nanomaterials and UV LIGHT can rapchemicals for easy removal from soil and water. 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,
If left alone, these nanomaterials would remain suspended and dispersed evenly in water. But when exposed to UV LIGHT,
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,
as another example of a persistent pollutant that could potentially be remediated using these nanomaterials. nd for analytical applications where you don need as much volume to purify or concentrate,
The study also suggests the broader potential for adapting nanoscale drug-delivery techniques developed for use in environmental remediation. hat we can apply some of the highly sophisticated,
and an expert in nanoengineering for health care and medical applications. hen you think about field deployment,
a team of researchers from the California Nanosystems Institute at UCLA have created a low-cost, smartphone-based device and app that is made with a 3d printer
The Californa Nanosystems Institute and the Johnsson Comprehensive Cancer Center also contributed, with support from the National Science Foundation and the Howard hughes medical institute.
Enter researchers from California Nanosystems Institute at UCLA. Theye created a smartphone-based diagnostic tool that reads blood samples for bacteria
The research spearheaded by Aydogan Ozcan, associate director of the California Nanosystems Institute, Dino Di Carlo, professor of bioengineering,
#Researchers Use Synthetic Strands of DNA to Create Nanoparticle Clusters and Arrays The study has been described in the journal Nature Nanotechnology.
This is a new breakthrough on the use of DNA in nanoscale construction. 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.
While atoms form molecules based on the nature of their chemical bonds, there has been no easy way to impose such a specific spatial binding scheme on nanoparticles.
This is exactly the problem that our method addresses said Brookhaven physicist Oleg Gang, who headed the project at the Lab's Center for Functional Nanomaterials (CFN), a DOE Office of Science User Facility.
According to the researchers, the novel technique would allow them to organize the arrangements of a variety of nanoparticles
and help them manipulate the synergistic or collective effects. Some of the examples comprise materials that deliver biomolecules,
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.
This method of nanoscale construction leverages two major properties of the DNA molecule, such as the natural tendency of strands having complementary bases,
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.
and provides close to nanometer resolution. We show that CRYO EM can be applied successfully to probe the 3d structure of DNA NANOPARTICLE clusters,
Wang said. The DOE Office of Science supported the study. DOE Office of Science supports the Brookhaven National Laboratory.
he does the electrochemistry and nanostructures, "she said. As for the biological component, Gomes said she is using"nanobrushes"specially designed to grab particular bacteria.
#New Technique Uses Ultrasound Waves for Bulk Synthesis of Graphene A team of researchers from the University of Tabriz have developed a method to manufacture graphene, a crystalline allotrope of carbon, in a simple and economical manner.
The project manager for the research, Dr. Hamed Asgharzadeh stated that they have discovered solutions to existing issues related to the synthesis of graphene.
and production costs but also enable graphene to be produced in large quantities. Graphene is one of the strongest, lightest and thinnest conductive materials known to man.
In graphene a single layer of carbon atoms is arranged in the form of a honeycomb structure.
Its highly versatile nature makes it applicable for use in numerous electronics gadgets such as wearables, flexible displays and other sophisticated electronic devices."
and regeneration are the two basic methods for producing graphene, and the biggest hindrance of such methods is the difficulty of washing the graphene oxide due to its high hydrophilic property.
This in turn necessitates the use of high-tech facilities such as high-speed centrifuges with hefty costs and limited capacities."
"Also, the graphene oxide will regenerate before the washing process and in the presence of oxidizers
#Gold nanoparticle Coating on Cotton Fibers Can Help Kill Bacteria Juan Hinestroza and his students live in a cotton-soft nano world,
who directs the Textiles Nanotechnology Laboratory at Cornell. n a nanoscale world and that is our world we can control cellulose-based materials one atom at a time.
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,
can be manipulated at the nano level to build nanoscale cages that are the exact same size as the gas they are trying to capture. e wanted to harness the power of these molecules to absorb gases
#Silver-Ion Infused Lignin Nanoparticles Effectively Kill Bacteria Orlin Velev, an engineer at NC State engineer,
along with other researchers developed nanoscale particles that introduce silver antimicrobial potency to a biocompatible lignin core.
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,
If left alone, these nanomaterials would remain suspended and dispersed evenly in water. But when exposed to UV LIGHT,
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,
as another example of a persistent pollutant that could potentially be remediated using these nanomaterials. nd for analytical applications where you don need as much volume to purify or concentrate,
The study also suggests the broader potential for adapting nanoscale drug-delivery techniques developed for use in environmental remediation. hat we can apply some of the highly sophisticated,
and an expert in nanoengineering for health care and medical applications. hen you think about field deployment,
A team of researchers from the California Nanosystems Institute at UCLA has developed a new mobile phone-based device that can read ELISA plates in the field with the same level of accuracy as the large machines normally found in clinical laboratories.
was led by Aydogan Ozcan, associate director of the California Nanosystems Institute, along with Dino Di Carlo, professor of bioengineering,
as well as the California Nanosystems Institute and the Jonsson Comprehensive Cancer Center. The other authors on the paper were UCLA graduate students Bingen Cortazar, Derek Tseng, Haydar Ozkan, Raymond Yan-Lok Chan, and Steve Feng;
The research has been published in the journal Microsystems & Nanoengineering, in an article headed"3d-printed microelectronics for integrated circuitry and passive wireless sensors. e
#Flexible nanogenerator harvests muscle movement to power mobile devices The consumer world is becoming powered by mobile devices,
The flexible nanogenerator resembles a small, stamp-sized patch that attaches to your skin. It uses your skin as a source of static electricity,
and nanotechnology as well as the completion of a device that may improve quality of life in indoor settings, from hospitals to underground parking garages.
the scientists could reconstruct the location of the molecules at the nanometer scale. Here how it works:
The ability to peer into the nanoworld of living cells to observe, for example, how proteins aggregate in the earliest stages of diseases like Alzheimer
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.
That such nanostructures could even be made is because of the decades-long investment by the electronics industry in developing nanofabrication tools to make the tiny components in computers.
has been developing sustainable nanomaterials since 2009.""If you take a big tree and cut it down to the individual fiber,
#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,
a ubiquitous substance found in all plant cells. The findings introduce ideas for better, greener and safer nanotechnology and could lead to enhanced efficiency of antimicrobial products used in agriculture and personal care.
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,
effectively kill a broad swath of bacteria, including E coli and other harmful microorganisms. 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,
#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,
a ubiquitous substance found in all plant cells. The findings introduce ideas for better, greener and safer nanotechnology and could lead to enhanced efficiency of antimicrobial products used in agriculture and personal care.
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,
effectively kill a broad swath of bacteria, including E coli and other harmful microorganisms. 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,
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,
000 nanometers thick.""Our immune system fails to recognize anything under 10 nanometers, "Pan said.""So, these tiny particles are camouflaged kind of,
I would say; they are hiding from the human immune system.""The team tested the therapeutic potential of the nanoparticles by loading them with an anti-melanoma drug
and mixing them in a topical solution that was applied to pig skin. Bhargava's laboratory used vibrational spectroscopic techniques to identify the molecular structure of the nanoparticles and their cargo."
"Raman and infrared spectroscopy are the two tools that one uses to see molecular structure, "Bhargava said."
"We think we coated this particle with a specific polymer and with specific drug-loading
"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.
'Copyright University of Illinois at Urbana-Champaignissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
The paper,"Tunable luminescent carbon nanospheres with well-defined nanoscale chemistry for synchronized imaging and therapy,"is available online:
X-ray laser opens up new avenues of research in material science June 18th, 2015a new way to image surfaces on the nanoscale:
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015a new way to image surfaces on the nanoscale:
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 Toward nanorobots that swim through blood to deliver drugs (video) June 17th, 2015arrowhead Receives Regulatory Clearance to Begin Additional Phase 2b Studies of Hepatitis b Candidate ARC-520 June 17th,
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015a new way to image surfaces on the nanoscale:
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015$8. 5m Grant For Developing Nano Printing Technology:
4-D printing to advance chemistry, materials sciences and defense capabilities June 18th, 2015a new way to image surfaces on the nanoscale:
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015a new way to image surfaces on the nanoscale:
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015$8. 5m Grant For Developing Nano Printing Technology:
4-D printing to advance chemistry, materials sciences and defense capabilities June 18th, 2015a new way to image surfaces on the nanoscale:
#Nanowire implants offer remote-controlled drug delivery Abstract: Remote-controlled Eradication of Astrogliosis in Spinal cord Injury via Electromagnetically-induced Dexamethasone Release from"Smart"Nanowireswen Gao and Richard Borgenswe describe a system to deliver drugs to selected tissues continuously,
novel vertically aligned electromagnetically-sensitive Polypyrrole Nanowires (Ppynws). Approximately 1-2mm 2 Dexamethasone (DEX) doped Ppynws was lifted on a single drop of sterile water by surface tension,
A team of researchers has created a new implantable drug-delivery system using nanowires that can be controlled wirelessly.
The nanowires respond to an electromagnetic field generated by a separate device, which can be used to control the release of a preloaded drug.
The nanowires are made of polypyrrole, a conductive polymer material that responds to electromagnetic fields. Wen Gao, a postdoctoral researcher in the Center for Paralysis Research who worked on the project with Borgens
grew the nanowires vertically over a thin gold base, like tiny fibers making up a piece of shag carpet hundreds of times smaller than a human cell.
The nanowires can be loaded with a drug and, when the correct electromagnetic field is applied, the nanowires release small amounts of the payload.
This process can be started and stopped at will, like flipping a switch, by using the corresponding electromagnetic field stimulating device,
and transported a patch of the nanowire carpet on water droplets that were used used to deliver it to the site of injury.
The nanowire patches adhere to the site of injury through surface tension Gao said. The magnitude and wave form of the electromagnetic field must be tuned to obtain the optimum release of the drug,
The electromagnetic field is likely affecting the interaction between the nanomaterial and the drug molecules, Borgens said."
Functional Drug Delivery Using Electromagnetic field-Responsive Polypyrrole Nanowires, "was published in the journal Langmuir. Other team members involved in the research include John Cirillo,
A 1-2 millimeter patch of the nanowires doped with dexamethasone was placed onto spinal cord lesions that had been exposed surgically,
and those that received a nanowire patch but were exposed not to the electromagnetic field. In some cases, treated mice had no detectable GFAP signal.
'Copyright Purdue Universityissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Cancer Nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd, 2015news and information Nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions June 23rd,
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
2015discoveries Nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
2015announcements Nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
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
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