| Carbon nanotubes (238) |  |
| Metal foam (15) | |
| Quantum dots (237) | |
| Silicene (35) | |
| Carbon nanotubes (238) | |
| Metal foam (15) | |
| Quantum dots (237) | |
| Silicene (35) | |
a thin, transparent film made from microscopic tubes called carbon nanotubes (CNTS), aligned parallel to the plane of the film.
which is basically the same stuff as the walls of carbon nanotubes but flattened into sheets.
They can even lay down carbon nanotubes, tiny structures made of linked carbon atoms, and are working to align them to build futuristic circuits, according to Mccarroll.
but they say theye made a breakthrough that could take thermophotovoltaics far beyond where it gone before. mit thermophotovoltaics MIT nanophotonic solar thermophotovoltaic device, with an array of multialled carbon nanotubes as the absorber, a oneimensional silicon/silicon dioxide photonic crystal as the emitter
T) he team inserted a two-layer absorber-emitter device made of novel materials including carbon nanotubes and photonic crystals between the sunlight and the PV cell.
and nanotubes By injecting carbon nanotubes into the bloodstream, scientists can use near-infrared lasers to see blood flow in a living animal brain.
or NIR-IIA, involves injecting water-soluble carbon nanotubes into a live mouse bloodstream. The researchers then shine a near-infrared laser over the rodent skull.
Second, injecting carbon nanotubes needs approval for clinical application; the scientists are currently investigating alternative fluorescent agents.
#Handheld terahertz cameras could replace MRI Rice university rightoriginal Studyposted by Mike Williams-Rice on June 11 2014scientists have used carbon nanotubes to create compact terahertz sensors that operate at room temperature.
The scientific community has long been interested in the terahertz properties of carbon nanotubes says Franãois LÃNARD a scientist at Sandia National Laboratories.
and his team have investigated terahertz phenomena in carbon nanotubes but those have focused mainly on the use of one or a bundle of nanotubes.
But that s what we ve achieved with the carbon nanotubes. The research was reported in the journal Nano Letters.
The chip, festooned with tiny carbon nanotubes (engineered segments of carbon that are efficient electrical conductors) and treated with a proprietary polymer
Left to their own devices carbon nanotubes form clumps that are perfectly wrong for turning into the kind of strong conductive fibers needed for projects ranging from nanoscale electronics to macro-scale power grids.
and lead authors Chengmin Jiang a graduate student and Avishek Saha a Rice alumnus starts with negatively charging carbon nanotubes by infusing them with potassium a metal and turning them into a kind of salt known as a polyelectrolyte.
and DNA the assembly of nanotechnological components or small organic polymers or the chemical alteration of carbon nanotubes. e need to continue to optimize the system
and nanotubes Stanford university rightoriginal Studyposted by Bjorn Carey-Stanford on August 7 2014by injecting carbon nanotubes into the bloodstream scientists can use near-infrared lasers to see blood flow in a living animal s brain.
or NIR-IIA involves injectingâ water-soluble carbon nanotubes into a live mouse s bloodstream. The researchers then shine a near-infrared laser over the rodent s skull.
Second injecting carbon nanotubes needs approval for clinical application; the scientists are currently investigating alternative fluorescent agents.
This new form of solid stable light-sensitive nanoparticles called colloidal quantum dots could lead to cheaper and more flexible solar cells as well as better gas sensors infrared lasers infrared light emitting diodes and more.
Collecting sunlight using these tiny colloidal quantum dots depends on two types of semiconductors: n-type which are rich in electrons and p-type
or PDMS, and carbon nanotubes. HOW IT WORKS When the terahertz light hits the transducer, the nanotubes absorb it,
and solar cells but Pint and Westover are confident that the rules that govern the load-bearing character of their design will carry over to other materials such as carbon nanotubes and lightweight porous metals like aluminum.
and medical devices to structural components for the automotive civil and aerospace industries. he cellulose nanocrystals represent a potential green alternative to carbon nanotubes for reinforcing materials such as polymers and concrete.
#From coal, cheap quantum dots in one step Chemists have discovered how to reduce three kinds of coal into graphene quantum dots (GQDS) that could be used for medical imaging as well as sensing electronic and photovoltaic applications.
In quantum dots microscopic discs of atom-thick graphene oxide band gaps are responsible for their fluorescence and can be tuned by changing the dots'##size.
Stanford university rightoriginal Studyposted by Tom Abate-Stanford on September 27 2013engineers have built a basic computer using carbon nanotubes a success that points to a potentially faster more efficient alternative to silicon chips.
Mihail Roco a senior advisor for nanotechnology at the National Science Foundation called the work n important scientific breakthrough. t was roughly 15 years ago that carbon nanotubes were fashioned first into transistors the on-off switches
But a bedeviling array of imperfections in these carbon nanotubes has frustrated long efforts to build complex circuits using CNTS.
and low-power switching make carbon nanotubes excellent candidates to serve as electronic transistors. NTS could take us at least an order of magnitude in performance beyond where you can project silicon could take uswong said.
Depending on how the CNTS grow a fraction of these carbon nanotubes can end up behaving like metallic wires that always conduct electricity instead of acting like semiconductors that can be switched off.
beyond silicon. hese are initial necessary steps in taking carbon nanotubes from the chemistry lab to a real environmentsays Supratik Guha director of physical sciences for IBM s Thomas J. Watson Research center
since graphene (and its cousin material, carbon nanotubes) is the only material with the high strength-to-weight ratio required for this kind of hypothetical application.
each sensor utilizes an array of tens of thousands of carbon nanotubes, which have had copper atoms attached to them.
#Explosives and Pesticides Can Be detected by Using Bee venom Scientists from MIT have discovered that by coating carbon nanotubes in bee venom,
##Researchers at#USC s Viterbi School of Engineeringhave created a#functioning synapse#using neurons made from carbon nanotubes.
A project at IBM is now aiming to have built transistors using carbon nanotubes ready to take over from silicon transistors soon after 2020.
and unlike carbon nanotubes, they don t behave similarly to silicon transistors, says Hannon. Subhasish Mitra, a professor who worked on the project.
We now know that you can build something useful with carbon nanotubes, he says. The question is,
when they reinforced the polymer with carbon nanotubes, it became 50 percent stronger. IBM Research's James Hedrick, who co-authored the new paper,
In this case, the researchers chose peptides that could capture gold nanoparticles and quantum dots. Researchers then programmed the E coli cells to produce biofilms with the conducting properties of gold nanowires.
Other films were studded with quantum dots, or tiny crystals that exhibit quantum mechanical properties. The cells were further able to communicate with each other
The new muscles contract to about 50 percent of their length compared with carbon nanotubes which contract to only about 10 percent their initial length he said.
what the paper describes as highly tunable composite films of carbon nanotubes and silver nanoparticles that are patterned on high-aspect-ratio elastic fibers.
reports Princeton News. The minuscule device is powered by individual electrons that tunnel through artificial atoms known as"quantum dots,
Basically, the device makes it possible to use double quantum dots two quantum dots joined together as quantum bits,
Essentially, the maser allows the double quantum dots to communicate with each other. To construct the tiny contraption,
He and his colleagues determined that those samples had measured a hardness of up to 108 gigapascals#slightly harder than synthetic diamond
#Quantum dots go on display Live from your living room, in super#saturated colour: it s the quantum dot TV!
Researchers working with nanoscale fluorescent particles called quantum dots have predicted long groundbreaking achievements, such as ultra-efficient light-emitting diodes (LEDS) and solar cells,
Massachusetts, would supply Sony Corporation of Tokyo with quantum dots for flat-screen televisions that will transmit more richly coloured images than other TVS on the market.
Quantum dots are crystals about 10 nano#metres in diameter, made from a semiconductor material, commonly cadmium selenide.
quantum dots did not find applications until 2002. That was when the Quantum dot Corporation of Hayward,
Quantum dots have shown promise for electronics, too#for example in solar cells in which a mix of quantum dots tuned to absorb different wavelengths of light could capture more of the energy in the solar spectrum.
But one hurdle to their exploitation was their temperature sensitivity. Near the backlight of a liquid-crystal display (LCD), for example, temperatures can be around 100#C. At this temperature,
He says that the company spent a long time tuning the chemistry of its quantum dots to make them stable at higher temperatures.
The new Triluminos tele#visions instead pair an uncoated blue LED with a thin glass tube filled with quantum dots.
Two kinds of quantum dots in the tube absorb some of the blue light from the backlight
with material for a similar product. 3m will make a polymer film seeded with quantum dots that does the same jobas QD Vision s glass tube.
because quantum dots remain expensive.""Even on the low end, they still cost in the hundreds of dollars per gram,
Bawendi is not surprised that it took quantum dots so long to find their footing.""You could argue that 30 years is about the right amount of time from fundamental discovery to applications,
A handful work at room temperature (by using carbon nanotubes to detect electrons for example2), but they cannot operate in water#a serious obstacle to using such devices in living organisms.
Quantum dots are light-emitting semiconductor nanocrystals that can be tuned by changing their size, nanometer by nanometer to emit all colors across the visible spectrum.
filled with quantum dots tuned to red and green, that implemented during the synthesis process. Manufacturers use a blue LED in the backlight,
on implementing quantum dots into electronic devices. In a study funded by MIT Deshpande Center for Technological Innovation, Coe-Sullivan, QD Vision cofounder Jonathan Steckel Phd 6,
To do so, they sandwiched a layer of quantum dots, a few nanometers thick, between two organic thin films.
and Asus has a quantum dot notebook. nd there nothing in between that quantum dots can address,
But in the new work they instead used carbon nanotubes atom-thick sheets of carbon rolled into cylinders grown on the slopes of the emitters like trees on a mountainside.
Grossman team tried attaching the molecules to carbon nanotubes (CNTS), but t incredibly hard to get these molecules packed onto a CNT in that kind of close packing,
The adoption of carbon nanotubes to increase materialsenergy storage density is lever, says Yosuke Kanai, an assistant professor of chemistry at the University of North carolina who was involved not in this work.
and other substances including living cells MIT engineers have coaxed bacterial cells to produce biofilms that can incorporate nonliving materials such as gold nanoparticles and quantum dots.
and films studded with quantum dots or tiny crystals that exhibit quantum mechanical properties. They also engineered the cells
To add quantum dots to the curli fibers the researchers engineered cells that produce curli fibers
along with a different peptide tag called Spytag which binds to quantum dots that are coated with Spycatcher a protein that is Spytag s partner.
along with the bacteria that produce histidine-tagged fibers resulting in a material that contains both quantum dots and gold nanoparticles.
In a new Nature Materials paper, the researchers report boosting plantsability to capture light energy by 30 percent by embedding carbon nanotubes in the chloroplast,
the researchers also embedded semiconducting carbon nanotubes, coated in negatively charged DNA, into the chloroplasts. Plants typically make use of only about 10 percent of the sunlight available to them,
but carbon nanotubes could act as artificial antennae that allow chloroplasts to capture wavelengths of light not in their normal range, such as ultraviolet, green,
With carbon nanotubes appearing to act as a rosthetic photoabsorber photosynthetic activity measured by the rate of electron flow through the thylakoid membranes was 49 percent greater than that in isolated chloroplasts without embedded nanotubes.
When nanoceria and carbon nanotubes were delivered together, the chloroplasts remained active for a few extra hours. The researchers then turned to living plants
Lean green machines The researchers also showed that they could turn Arabidopsis thaliana plants into chemical sensors by delivering carbon nanotubes that detect the gas nitric oxide,
it alters the tube fluorescence. e could someday use these carbon nanotubes to make sensors that detect in real time, at the single-particle level,
To create these ynthetic antibodies, the researchers used carbon nanotubes hollow, nanometer-thick cylinders made of carbon that naturally fluoresce
Moreover, this approach can provide a more durable alternative to coating sensors such as carbon nanotubes with actual antibodies,
when the polymers are exposed to carbon nanotubes, the hydrophobic regions latch onto the tubes like anchors
Among nanomaterials, carbon-based nanoparticles such as carbon nanotubes and graphene have shown promising results, but they suffer from relatively low electrical conductivity,
Other groups have made similar supercapacitors using carbon nanotubes or other materials, but the niobium yarns are stronger and 100 times more conductive.
#High-resolution patterns of quantum dots with e-jet printing A team of 17 materials science and engineering researchers from the University of Illinois at Urbana#Champaign and Erciyes University in Turkey have authored High-resolution Patterns of Quantum dots
and operating conditions that allow for high-resolution printing of layers of quantum dots with precise control over thickness and submicron lateral resolution and capabilities for use as active layers of QD light-emitting diodes.
Their work on high-resolution patterns of quantum dots is of interest as it shows that advanced techniques in e-jet printing offer powerful capabilities in patterning quantum dot materials from solution inks over large areas.
As for TV technology nearly every TV manufacturer at CES this year remarked Geoffrey Morrison in CNET said quantum dots helped deliver better more lifelike color.
Writing in IEEE Spectrum on Monday Prachi Patel similarly made note that Quantum dots (QDS) are light-emitting semiconductor nanocrystals that used in light-emitting diodes (LEDS) hold the promise of brighter faster displays.
In the IEEE story headlined High-resolution Printing of Quantum dots For Vibrant Inexpensive Displays Patel said these researchers repurposed a printing method which they devised for other applications.
High-resolution Patterns of Quantum dots Formed by Electrohydrodynamic Jet Printing for Light-emitting diodes Nano Lett. Article ASAP.
and operating conditions that allow for high-resolution printing of layers of quantum dots (QDS) with precise control over thickness and submicron lateral resolution and capabilities for use as active layers of QD light-emitting diodes (LEDS).
"Carbon nanotubes are very strong and very flexible, so they could also be used to make flexible displays
"Carbon nanotubes are single atomic sheets of carbon rolled up into a tube. As some of the best electrical conductors ever discovered, carbon nanotubes have long been recognized as a promising material for next-generation transistors,
which are semiconductor devices that can act like an on-off switch for current or amplify current. This forms the foundation of an electronic device.
However, researchers have struggled to isolate purely semiconducting carbon nanotubes, which are crucial, because metallic nanotube impurities act like copper wires and"short"the device.
achieving a solution of ultra-high-purity semiconducting carbon nanotubes. Previous techniques to align the nanotubes resulted in less than-desirable packing density,
Two studies Complement activation by carbon nanotubes and its influence on the phagocytosis and cytokine response by macrophages and Complement deposition on nanoparticles can modulate immune responses by macrophage B
and T cells found that carbon nanotubes (CNTS) triggered a chain reaction in the complement system which is part of the innate immune system
The researchers used tiny crystals called quantum dots to create the LEDS that generated the colored light.
We used the quantum dots also known as nanoparticles as an ink Mcalpine said. We were able to generate two different colors orange and green.
The researchers combined semiconductor nanorods and carbon nanotubes to create a wireless light-sensitive flexible film that could potentially replace a damaged retina.
Unlike other new biomarkers used for imaging such as quantum dots the NTU biomarker has also been shown to be nontoxic staying in the body for up to two days before it is passed out harmlessly.
Quantum dots are light-emitting semiconductor nanocrystals that can be tuned by changing their size, nanometer by nanometer to emit all colors across the visible spectrum.
filled with quantum dots tuned to red and green, that implemented during the synthesis process. Manufacturers use a blue LED in the backlight,
on implementing quantum dots into electronic devices. In a study funded by MIT Deshpande Center for Technological Innovation, Coe-Sullivan, QD Vision cofounder Jonathan Steckel Phd 6,
To do so, they sandwiched a layer of quantum dots, a few nanometers thick, between two organic thin films.
and Asus has a quantum dot notebook. nd there nothing in between that quantum dots can address,
"The breakthrough extends a stream of nanotechnology research at Rice that began with chemist Robert Hauge's 2009 invention of a"flying carpet"technique to grow very long bundles of aligned carbon nanotubes.
To increase the nanowires'surface area Nath can make them hollow in the middle much like carbon nanotubes found in optics and electronics.
Carbon nanotubes are known for their strength and high electrical conductivity and are used in products from baseball bats and other sports equipment to lithium-ion batteries and touchscreen computer displays.
Zang and his team found a way to break up bundles of the carbon nanotubes with a polymer
The National Science Foundation (NSF)- funded scientist theorized correctly that he could adapt it to separate carbon nanotubes rolled sheets of graphene (a single atomic layer of hexagonally bonded carbon atoms) long recognized for their potential applications in computers
The carbon nanotubes separation process which Hersam developed begins with a centrifuge tube. Into that we load a water based solution and introduce an additive
We then load the carbon nanotubes and put it into the centrifuge which drives the nanotubes through the gradient.
Carbon nanotubes are highly resilient Hersam says. That allows us to integrate electronics on flexible substrates like clothing shoes and wrist bands for real time monitoring of biomedical diagnostics and athletic performance.
Brighter new energy saving flat panel lights based on carbon nanotubes Even as the 2014 Nobel prize in Physics has enshrined light emitting diodes (LEDS) as the single most significant and disruptive energy-efficient lighting solution of today scientists
Electronics based on carbon especially carbon nanotubes (CNTS) are emerging as successors to silicon for making semiconductor materials.
Scientists from Tohoku University in Japan have developed a new type of energy-efficient flat light source based on carbon nanotubes with very low power consumption of around 0. 1 Watt for every hour's operation
The new devices have luminescence systems that function more like cathode ray tubes with carbon nanotubes acting as cathodes
In recent years carbon nanotubes have emerged as a promising material of electron field emitters owing to their nanoscale needle shape and extraordinary properties of chemical stability thermal conductivity and mechanical strength.
Many researchers have attempted to construct light sources with carbon nanotubes as field emitter Shimoi said. But nobody has developed an equivalent and simpler lighting device.
But in the new work they instead used carbon nanotubes atom-thick sheets of carbon rolled into cylinders grown on the slopes of the emitters like trees on a mountainside.
The best carbon nanotubes (CNTS) have demonstrated conductivities far beyond those of the best metals. Thus future windings made of CNTS may have a double conductivity compared with the present-day copper windings.
Carbon nanotubes are rapidly becoming more common because of their usefulness in nanoelectric devices composite materials and biomedicine.
and the animals that eat them Previous research has shown that carbon nanotubes take a long time to degrade through natural processes
whether or not these pollutants can be stripped away from the carbon nanotubes by these animals'digestive systems after being ingested continued Ferguson.
Biodistribution of carbon nanotubes in the body More information: Fate of single walled carbon nanotubes in wetland ecosystems. Schierz A. Espinasse B. Wiesner M. R. Bisesi J. H. Sabo-Attwood T. Ferguson P. L. Environmental science:
The exceptional strength of carbon nanotubes prevents the cathode from being destroyed. Traditionally accelerator scientists use lasers to strike cathodes
and carbon nanotubes is one of the most promising novel technology for producing inexpensive printed solar cells.
Physicists at Umeå University have discovered that one can reduce the number of carbon nanotubes in the device by more than 100 times
Carbon nanotubes are more and more attractive for use in solar cells as a replacement for silicon. They can be mixed in a semiconducting polymer
if carbon nanotubes are connected to each other in a controlled manner to form complex nanosized networks, one can achieve significantly higher charge transport
Previous studies have reported that there is a percolation threshold for the amount of carbon nanotubes necessary to transport efficiently electric charges in a device.
#Self-organized indium arsenide quantum dots for solar cells Kouichi Yamaguchi is recognized internationally for his pioneering research on the fabrication and applications of'semiconducting quantum dots'(QDS.
and highly uniform quantum dots explains Yamaguchi. Our'bottom-up'approach yields much better results than the conventional photolithographic
Novel applications of'quantum dots'including lasers biological markers qubits for quantum computing and photovoltaic devices arise from the unique optoelectronic properties of the QDS
Resonant energy transfer from quantum dots to graphene More information: Edes Saputra Jun Ohta Naoki Kakuda and Koichi Yamaguchi Self-Formation of In-Plane Ultrahigh-Density Inas Quantum dots on Gaassb/Gaas (001) Appl.
Phys. Express 5 125502 (2012. DOI: dx. doi. org/10.1143/APEX. 5. 125502 Katsuyoshi Sakamoto Yasunori Kondo Keisuke Uchida and Koichi Yamaguchi Quantum dot density dependence of power conversion
#Nanotubes help healing hearts keep the beat (Phys. org) Carbon nanotubes serve as bridges that allow electrical signals to pass unhindered through new pediatric heart-defect patches invented at Rice university and Texas Children's Hospital.
Because the toxicity of carbon nanotubes in biological applications remains an open question Pasquali said the fewer one uses the better.
and structural hybridization of carbon nanotubes (CNTS) and graphene via a two-step chemical vapor deposition (CVD) scientists have fabricated nitrogen-doped aligned carbon nanotube/graphene (N-ACNT/G) sandwiches
Rational hybridization of N-doped graphene/carbon nanotubes for oxygen reduction and oxygen evolution reaction More information:
While one-dimensional materials such as carbon nanotubes and nanowires also allow excellent electrostatics and at the same time possess band gap they are not suitable for low-cost mass production due to their process complexities she said.
Presenting their findings today 5 august 2014 in the journal Nanotechnology the researchers have demonstrated the material's superior performance compared to commercially available carbon graphene and carbon nanotubes.
and carbon nanotubes as reported in previous studies. Explore further: Nano-supercapacitors for electric cars More information:
#Existence of two-dimensional nanomaterial silicene questioned Sometimes scientific findings can shake the foundations of what was held once to be true causing us to step back
A recent study at the U s. Department of energy's Argonne National Laboratory has called into question the existence of silicene thought to be one of the world's newest and hottest two-dimensional nanomaterials.
Silicene was proposed as a two-dimensional sheet of silicon atoms that can be created experimentally by super-heating silicon
Both silicene and silicon should react immediately with oxygen but they react slightly differently. In the case of silicon oxygen breaks some of the silicon bonds of the first one
Because it consists of only one layer of silicon atoms silicene must be handled in a vacuum.
which has been mistaken as two-dimensional silicene. Some of the bulk silicon platelets were more than one layer thick said Argonne scientist Nathan Guisinger of Argonne's Center for Nanoscale Materials.
Each new series of experiments presented a new set of clues that this was in fact not silicene.
We found out that what previous researchers identified as silicene is really just a combination of the silicon
Their sample did not exhibit characteristic vibrations of silicene but it did match those of silicon.
if you are trying to grow silicene. Explore further: Wonder material silicene has suicidal tendencie e
#Discovery is key to metal wear in sliding parts (w/Video) Researchers have discovered a previously unknown mechanism for wear in metals:
This coating is mad e of carbon nanotubes-each 10000 times thinner than a human hair wrote Ian Johnston in The Independent on Sunday.
when they created the smallest-ever quantum dots single atom of silicon measuring less than one nanometre widesing a technique that will be awarded a U s. patent later this month.
Quantum dots Wolkow says, are vessels that confine electrons, much like pockets on a pool table. The dots can be spaced
the research team observed how single electrons jump in and out of the quantum dots, and devised a method of monitoring how many electrons fit in the pocket and measuring the dot's charge.
give scientists the ability to monitor the charge of quantum dots. They've also found a way to create quantum dots that function at room temperature,
meaning costly cryogenics is not necessary.""That's exciting because, suddenly, things that were thought of as exotic,
During the procedure, the carbon nanotubes and thus the pore size shrink to a lesser extent than they would in the absence of the confining template
"We need to use structure specific carbon nanotubes for real applications. The structure controlled growth has been a dream of our field for about 20 years.
I believe her idea to use W-based catalyst is the landmark of growth of carbon nanotubes.
We expect a plenty of very useful applications of carbon nanotubes based on her new discovery, "said Professor Shigeo Maruyama from The University of Tokyo,
who also serves the president of Fullerene, Carbon nanotubes, and Graphene research Society of Japan. Single-walled carbon nanotube (SWNT
In 2009, the International Technology Roadmap for Semiconductors (ITRS) selected carbon-based nanoelectronics to include carbon nanotubes
This development is very important for the applications of carbon nanotubes in many fields especially nanoelectronics. c
#Lab unzips nanotubes into ribbons by shooting them at a target (Phys. org) Carbon nanotubes unzipped into graphene nanoribbons by a chemical process invented at Rice university are finding use in all kinds of projects
Until now we knew we could use mechanical forces to shorten and cut carbon nanotubes. This is the first time we have showed carbon nanotubes can be unzipped using mechanical forces.
The researchers fired pellets of randomly oriented multiwalled carbon nanotubes from a light gas gun built by the Rice lab of materials scientist Enrique Barrera with funding from NASA.
We were investigating possible applications for carbon nanotubes in space when we got this result. The effect was confirmed through molecular simulations.
Scientists shoot carbon nanotubes out of high-speed gun (w/video) More information: Unzipping Carbon nanotubes at High Impact.
Sehmus Ozden Pedro A s. Autreto Chandra Sekhar Tiwary Suman Khatiwada Leonardo Machado Douglas S. Galvao Robert Vajtai Enrique V. Barrera
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