which is entitled"Colloidal Nanoparticles as Catalysts and Catalyst Precursors for Nitrite Hydrogenation"on Thursday 15 january a
In this study researchers exposed cultured laboratory mouse cells resembling the arterial wall cells to NPS of silicon dioxide
and active electronics via 3-D printing (Phys. org) As part of a project demonstrating new 3-D printing techniques Princeton researchers have embedded tiny light-emitting diodes into a standard contact lens
Kong the lead author of the Oct 31 article describing the current work in the journal Nano Letters said that the contact lens project on the other hand involved the printing of active electronics using diverse materials.
Mcalpine said that one of 3-D printing's greatest strengths is its ability to create electronics in complex forms.
and then stacks them into three dimensions 3-D printers can create vertical structures as easily as horizontal ones.
To conduct the research the team built a new type of 3-D printer that Mcalpine described as somewhere between off-the-shelf and really fancy.
and build the new printer which Mcalpine estimated cost in the neighborhood of $20000. Mcalpine said that he does not envision 3-D printing replacing traditional manufacturing in electronics any time soon;
instead they are complementary technologies with very different strengths. Traditional manufacturing which uses lithography to create electronic components is a fast and efficient way to make multiple copies with a very high reliability.
Manufacturers are using 3-D printing which is slow but easy to change and customize to create molds and patterns for rapid prototyping.
Trying to print a cellphone is probably not the way to go Mcalpine said It is customization that gives the power to 3-D printing.
In this case the researchers were able to custom 3-D print electronics on a contact lens by first scanning the lens and feeding the geometric information back into the printer.
The new technique could also be used to create nanoscale inkjet printers for printing electronics or biological cells or to create antennas or photonic components.
The paper Sculpting Asymmetric Hollow-Core Three-dimensional Nanostructures Using Colloidal Particles was published online Dec 8 in the journal Small l
Heterostructured nanoparticles can be used as catalysts and in advanced energy conversion and storage systems. Typically these nanoparticles are created from tiny seeds of one material on top of
Initially the gold covered the platinum seed's surface uniformly creating a type of nanoparticle known as core-shell.
The mismatch can be handled by the first two layers of gold atoms creating the core-shell effect
The core of the nanothreads that Badding's team made is a long thin strand of carbon atoms arranged just like the fundamental unit of a diamond's structure zigzag cyclohexane rings of six carbon atoms bound together in
and to link up in a highly ordered chain of single-file carbon tetrahedrons forming these diamond-core nanothreads.
The resulting diamond-core nanothread is surrounded by a halo of hydrogen atoms. During the compression process the scientists report the flat benzene molecules stack together bend
so that when we release the pressure very slowly an orderly polymerization reaction happens that forms the diamond-core nanothread.
The nanothread also may be the first member of a new class of diamond-like nanomaterials based on a strong tetrahedral core.
You can attach all kinds of other atoms around a core of carbon and hydrogen.
which display processor memory and energy devices are integrated. The high temperature processes essential for high performance electronic devices have restricted severely the development of flexible electronics because of the fundamental thermal instabilities of polymer materials.
The transferred device successfully demonstrates fully-functional random access memory operation on flexible substrates even under severe bending.
The ILLO process can be applied to diverse flexible electronics such as driving circuits for displays and inorganic-based energy devices such as battery solar cell and self-powered devices that require high temperature processes s
Inorganic#Organic Hybrid Nanoprobe for NIR-Excited Imaging of Hydrogen sulfide in Cell Cultures and Inflammation in a Mouse Model.
Scientists have developed now a fast low-cost way of making these sensors by directly printing conductive ink on paper.
Metal ink could ease the way toward flexible electronic books displays More information: Direct Writing on Paper of Foldable Capacitive Touch Pads with Silver nanowire Inks ACS Appl.
it will probably be thanks to MIT spinout QD Vision, a pioneer of quantum dot television displays.
Last June, Sony used QD Vision product, called Color IQ, in millions of its Bravia riluminostelevisions, marking the first-ever commercial quantum dot display.
these displays will be olling out to the rest of the world. Replacing the bulb In conventional LCD TVS
and green filters to produce the colors on the screen. But this actually requires phosphors to convert a blue light to white;
and displays only reach about 70 to 80 percent of the National Television Standard Committee color gamut.
with greater power efficiency than any other technology. he value proposition is that you are not changing the display,
and yet the entire display looks much better. The colors are much more vivid known as much more saturated allowing you to generate a much more believable image,
Green from radle to gravewhile QD Vision aims to bring consumers more color-saturated displays,
which replaces phosphor in displays the company developed a much greener synthesis, according to the EPA.
Other technologies, called organic light-emitting diode (OLED) displays, use an organic compound to reach upward of 100 percent of the color gamut
Lighting to displays, and back QD Vision technology began at MIT more than a decade ago.
quantum dot displays. aking a transition like that from lighting to displays tests the nerves of folks involved, from top to bottom,
Pooling all resources into displays, the company eventually caught the eye of Sony, and last year became the first to market with a quantum dot display.
Today, QD Vision remains one of only two quantum dot display companies that have seen their products go to market.
Now, with a sharp rise in commercial use, quantum dot technologies are positioned to penetrate the display industry
Coe-Sullivan says. Along with Color IQ-powered LCD TVS, Amazon released a quantum dot Kindle last year,
and computer screens may seem worlds apart but they're not. When associate professor Qi Hua Fan of the electrical engineering and computer science department set out to make a less expensive supercapacitor for storing renewable energy he developed a new plasma technology that will streamline the production of display screens.
For his work on thin film and plasma technologies Fan was named researcher of the year for the Jerome J. Lohr College of Engineering.
His research focuses on nanostructured materials used for photovoltaics energy storage and displays. Last spring Fan received a proof-of-concept grant from the Department of energy through the North Central Regional Sun Grant Center to determine
Applied Nanofilms and Wintek a company that makes flat panel displays for notebooks and touch screens in Ann arbor Michigan provided matching funds.
Through this project Fan developed a faster way of treating the biochar particles using a new technology called plasma activation.
The technique that treats biochar electrodes for supercapacitors can also be used in making displays explained Fan who was a research scientist at Wintek more than 10 years ago.
Since last fall Fan has been collaborating with Wintek on ways of producing more efficient better performing materials such as silicon and carbon thin films for the company's displays.
The high-energy plasma can deposit highly transparent and conductive thin films create high quality semiconductors and pattern micro-or nanoscale devices thus making the display images brighter and clearer.
eliminating adhesion issues that plagued the transfer of platinum catalysts to common electrodes like transparent conducting oxide.
or computer screen that are produced solely by combinations of red, green and blue pixels. The yellows, oranges and purples those displays make,
however, are a trick of perception, not of physics. Red and blue light are experienced simply simultaneously,
the nanowire core.""By engineering the structure so that light is contained mostly within the cadmium sulfide rather than at the interface between it and the silver shell,
In fuel cells these nanowire arrays can be used to lower production expenses by relying on more cost-efficient catalysts.
or outperform the current use of platinum and show that these nanowire arrays are better catalysts for the oxygen reduction reactions in the cells says Dr. Manashi Nath assistant professor of chemistry at Missouri S&t.
but previous studies determined the material's edges are highly efficient catalysts for hydrogen evolution reaction (HER) a process used in fuel cells to pull hydrogen from water.
and high electrical conductivity and are used in products from baseball bats and other sports equipment to lithium-ion batteries and touchscreen computer displays.
and monitor the current through the nanotube,"says Zang, a professor with USTAR, the Utah Science Technology and Research economic development initiative."
cores of nuclear reactor, solar farms, etc. to the system that is going to use it (thermal storage systems, steam generators, chemical reactors, etc..
high energy densities for future flexible electronic devices such as smart electronics and roll up displays. y
#New self-assembly method for fabricating graphene nanoribbons First characterized in 2004 graphene is a two-dimensional material with extraordinary properties.
and optimization of the device which is based on a phosphor screen and single-walled carbon nanotubes as electrodes in a diode structure.
The electrons then fly through the vacuum in the cavity and hit the phosphor screen into glowing.
and designed said Peng Yin senior author of the paper Wyss core faculty member and Assistant professor of Systems Biology at Harvard Medical school.
The core of this carrier is made of an oligomer of EGCG (OEGCG) which can encapsulate drugs and proteins such as Herceptin,
In my opinion the best nanosystems are going to be done by 3-D printing because it would bypass the problems of standard microfabrication Velsquez-Garca says.
3-D printing is going to make a big difference in the kinds of systems we can put together
touted as a transformational replacement for current hard drive technologies such as Flash, SSD and DRAM. Memristors have potential to be fashioned into nonvolatile solid-state memory
#New research points to graphene as a flexible low-cost touchscreen solution New research published today in the journal Advanced Functional Materials suggests that graphene-treated nanowires could soon replace current touchscreen technology
The majority of today's touchscreen devices such as tablets and smartphones are made using indium tin oxide (ITO)
Researchers from the University of Surrey and AMBER the materials science centre based at Trinity college Dublin have demonstrated now how graphene-treated nanowires can be used to produce flexible touchscreens at a fraction of the current cost.
Using a simple scalable and inexpensive method the researchers produced hybrid electrodes the building blocks of touchscreen technology from silver nanowires and graphene.
and bendable smart displays poses a challenge to manufacturers. They want to offer consumers flexible touchscreen technology but at an affordable and realistic price.
At the moment this market is limited severely in the materials to hand which are both very expensive to make
Lead author Dr Izabela Jurewicz from the University of Surrey commented Our work has cut the amount of expensive nanowires required to build such touchscreens by more than fifty times as well as simplifying the production process.
Co-author Professor Jonathan Coleman AMBER added This is a real alternative to ITO displays and could replace existing touchscreen technologies in electronic devices.
Even though this material is cheaper and easier to produce it does not compromise on performance.
Gallium nitride micro-rods grown on graphene substrates Bendy light-emitting diode (LED) displays and solar cells crafted with inorganic compound semiconductor micro-rods are moving one step closer to reality thanks to graphene and the work of a team of researchers in Korea.
and optoelectronics devices such as flexible and wearable LED displays for commercial use said Yi. Explore further:
Because picene displays its high carrier mobility when exposed to oxygen the researchers hope to investigate its properties under varying levels of oxygen exposure
Facile Catalytic Growth on Bifunctional Natural Catalysts and Their Applications as Scaffolds for High-Rate Lithium-Sulfur Batteries.
The researchers have shown that these display similar properties to those of a classic p-n-junction
and electricity better than any other known materialas potential industrial uses that include flexible electronic displays, high-speed computing, stronger wind turbine blades,
with the transistor and display processing steps that Plastic Logic has developed already for flexible electronics.
The new prototype is an active matrix electrophoretic display, similar to the screens used in today's e readers,
except it is made of flexible plastic instead of Glass in contrast to conventional displays, the pixel electronics,
or backplane, of this display includes a solution-processed graphene electrode, which replaces the sputtered metal electrode layer within Plastic Logic's conventional devices,
bringing product and process benefits. Graphene is more flexible than conventional ceramic alternatives like indium-tin oxide (ITO) and more transparent than metal films.
For this prototype, the backplane was combined with an electrophoretic imaging film to create an ultra-low power and durable display.
"We are happy to see our collaboration with Plastic Logic resulting in the first graphene-based electrophoretic display exploiting graphene in its pixels'electronics,
This will target the realisation of an advanced, full colour, OELD based display within the next 12 months h
S protein displays is much lower than ours, "says Burkhard.""The homogeneity of our vaccine is much higher,
"Every single protein chain that forms our particle displays one of the pathogen's protein molecules that are recognized by the immune system,
We took a mouse malaria parasite and put in its DNA a piece of DNA from the human malaria parasite that we wanted our vaccine to attack.
That allowed us to conduct inexpensive mouse studies to test the vaccine before going to expensive human trials."
which are prevalent in electronic displays), future applications of this technique to other industries appears straight forward."
Using a handheld Raman scanner in a mouse model that mimics human GBM the researchers successfully identified
#Conductive nanofiber networks for flexible unbreakable and transparent electrodes Transparent conductors are required as electrodes in optoelectronic devices, such as touch panel screens, liquid crystal displays, and solar cells.
Examples of applications are large displays, large interactive touch screens, photovoltaic solar panels, light-emitting diode panels, smart phones,
Researchers use aluminum nanostructures for photorealistic printing of plasmonic color palettes More information: Zheng B. Y. Wang Y. Nordlander P. and Halas N. J. 2014) Color-Selective and CMOS-Compatible Photodetection Based on Aluminum Plasmonics.
and for flexible displays and touch screens. They can be used in rubberlike electronic devices that, unlike paperlike electronic devices, can stretch as well as bend.
the new holograms could have applications in 3d displays and information storage devices, among others.""This experiment is inspired by the very unique optical properties shown by the Lycurgus cup,
"Furthermore, this concept can be applied as the basis to produce dynamic three-dimensional color displays. In the area of informatics, these holographic configurations could store information in subwavelength areas.
This means that optical data storage devices such as CDS, DVDS or Blu-ray could potentially expand their storage limits."
"Future research is focused on the study of mechanisms for the tuning the plasmonic effect for display applications,
"The main goal is the integration of new modulation schemes to produce ultra-thin displays and dynamic holograms
#Graphene rubber bands could stretch limits of current healthcare New research published today in the journal ACS Nano identifies a new type of sensor that can monitor body movements
and high catalytic activity that make them excellent candidates for industrial catalysts. Now, researchers in Singapore have developed a simple chemical process to grow uniform pentagonal nanorods composed of gold and copper.
The nanorods were examined as catalysts for this reaction using the model substrates p-toluene sulphonamide and benzyl alcohol."
and better recyclability compared to commercially available catalysts, "Ying says. Beyond catalysis, Ying predicts these new materials could be useful in electronics, chemical sensing and even biomedicine.
which offer the possibility of mass production by using the conventional printing technology and working with low-cost materials.
It was made by inkjet printing of an organic field-effect transistor (OFET) and subsequent functionalization of the insulator with specific antibodies.
The Biofet designed at ICN2 represents an important starting point for the design and fabrication of flexible organic biosensing devices by inkjet printing.
Formation of organic thin-film transistors through room-temperature printing More information: Mariana Medina-Sánchez Carme Martínez-Domingo Eloi Ramon Arben Merkoçi.
His team has made ultrathin nanowires that can monitor and influence what goes on inside cells.
The only difference is the ones we used are much more precise due to a sophisticated system of hardware and software.
"The paper notes that this in operando approach could be applied in other fields, such as studies of fuel cells and catalysts,
For example it might eventually be embed possible to these printed flexible optoelectronic devices into clothes packaging wall papers posters touch screens or even buildings.
Everybody with a printer at home will be able to print their own artificial eye and physically stick it to a flexible mobile phone Felice said.
This represents a strong limitation for flexible electronics in a wide range of applications from active matrix displays to ultrafast light detectors and gas sensors.
and can be printed by a standard inkjet printer. The graphene-based ink enables cost-effective printed electronics on plastic.
and does not require much processing after printing. We used a simple sonication and centrifugation process to unveil graphene potential in inks
#An anti-glare anti-reflective display for mobile devices? If you've ever tried to watch a video on a tablet on a sunny day,
which continue to plague even the best mobile displays today. Valerio Pruneri and colleagues note that much effort has been poured into anti-reflective and anti-glare technology.
But for the most part, that hasn't included an integrated anti-glare, anti-reflective display. Users still typically have to dish out extra cash for a filter
or filmome of questionable effectivenesso lay on top of their glass screens so they can use the devices in bright light.
But the existing technique doesn't work well with glass, the material of choice for many electronic displays
further research is needed to ensure that the surface can withstand heavy touchscreen use, they say.
used cancer cells and mouse models to compare the effects of the self-assembling nanoparticle in MRI scanning against commonly used imaging agents
"In previous LANP research, other geometric disc structures were used to create powerful optical processors. Zhang said the quadrumer amplifiers are a key to SECARS,
#Chirality-controlled growth of single-walled carbon nanotubes Recently, Professor Li Yan's research team developed a novel strategy to produce single-walled carbon nanotubes with specific chirality by applying a new family of catalysts,
The catalysts, tungsten-based bimetallic alloy nanoparticles of non-cubic symmetry, have high melting points and consequently are able to maintain their crystal structure during the chemical vapor deposition (CVD) process,
The (12,6) SWNTS are synthesized directly at an abundance of>92%by using W6co7 catalysts. Experimental evidence and theoretical simulation reveal that the good structural match between the carbon atom arrangement around the nanotube circumference
"Employing tungsten-based alloy nanocrystals with unique structure as catalysts paves a way for the ultimate chirality control in SWNT growth.
#Metal particles in solids aren't as fixed as they seem memristor study shows In work that unmasks some of the magic behind memristors and"resistive random access memory,
uses 3-D printing technology that can be implemented now i
#New approach may be key to quantum dot solar cells with real gains in efficiency (Phys. org) Los alamos researchers have demonstrated an almost fourfold boost of the carrier multiplication yield with nanoengineered quantum dots.
A new study conducted within the Center for Advanced Solar Photophysics demonstrates that appropriately engineered core/shell nanostructures made of lead selenide
The long lifetime of these energetic holes facilitates an alternative relaxation mechanism via collisions with core-localized valence band electron
Qianglu Lin a CASP student working on the synthesis of these materials said A striking feature of the thick-shell Pbse/Cdse quantum dots is fairly bright visible emission from the shell observed simultaneously with the infrared emission from the core.
which underlies the observed enhancement of carrier multiplication likely relates to the interplay between core
while lower energy states still remain confined to the core. This separation leads to electronic decoupling of higher-from lower energy holes states which is observed responsible for the slowed cooling.
Even heads-up displays on vehicle dashboards could soon be a reality. The new technology also has major medical implications.
where they enable three-dimensional imaging for a vast array of applicationsranging from biological tissue, technical devices such as catalysts, fossils to antique works of art.
such as the fine structures of cell components or modern catalysts and batteries. Until now, such fine details could only be rendered visible with the aid of electron microscopes
#Shatterproof screens that save smartphones University of Akron polymer scientists have developed a transparent electrode that could change the face of smartphones, literally,
by making their displays shatterproof. In a recently published scientific paper, researchers demonstrated how a transparent layer of electrodes on a polymer surface could be extraordinarily tough and flexible,
and replace conventional touchscreens, according to Yu Zhu, UA assistant professor of polymer science. Currently used coatings made of indium tin oxide (ITO) are more brittle,
"The annoying problem of cracked smartphone screens may be solved once and for all with this flexible touchscreen. The team's findings are published in the American Chemical Society's journal ACS Nano in the article titled"A Tough and High-performance Transparent Electrode from a Scalable and Transfer-Free Method
Taox-capped Pt nanoparticles as efficient catalysts for polymer electrolyte fuel cells More information: Covert thermal barcodes based on phase change nanoparticles Scientific Reports 4 Article number:
which can be used to screen for diabetes in resource-poor settings has been developed by researchers and tested in diabetic patients,
A low-cost, reusable sensor which uses nanotechnology to screen for and monitor diabetes and other conditions, has been developed by an interdisciplinary team of researchers from the University of Cambridge, for use both in clinics and home settings.
The sensors use nanotechnology to monitor levels of glucose, lactate and fructose in individuals with diabetes or urinary tract infections
Earlier this year, clinical trials of the sensors were carried out at Addenbrooke's Hospital to monitor glucose levels in 33 diabetic patients.
"These sensors can be used to screen for diabetes in resource-poor countries, where disposable test strips and other equipment are simply not affordable,
#Flexible transparent thin film transistors raise hopes for flexible screens (Phys. org) he electronics world has been dreaming for half a century of the day you can roll a TV up in a tube.
Thin film transistors are a particular subset of these that are used typically in screens and displays.
Virtually all flat-screen TVS and smartphones are made up of thin film transistors today; they form the basis of both LEDS and LCDS (liquid crystal displays."
nearly invisible screen,"said Andreas Roelofs, a coauthor on the paper and interim director of Argonne's Center for Nanoscale Materials."
"Imagine a normal window that doubles as a screen whenever you turn it on, for example."
so you could make not just a screen but an entire flexible and transparent TV or computer."
Mr Duczynski used silica nanoparticles coated with a gold shell (silica-gold core-shell nanoparticles) in his research."
"There are some theoretical and experimental papers where it was observed that by varying the dimensions of either the silica core
"Ultraviolet spectroscopy was used on the silica-gold core-shell nanoparticles made by Mr Duczynski to better understand their optical properties, such as extinction, scattering and absorption.
The research also involved the development of iron oxide-gold core shell nanoparticles.""This particle system was attempted because
"I was able to see some scattering of the iron oxide-gold core-shell nanoparticles,
The device monitors these changes the magnitude of which are directly related to the concentration/number of markers in the patient blood
which was designed to inject DNA into mouse zygotes (single-cell embryos consisting of a fertilized egg)."
#Liver-like device via 3-D printer (Phys. org) Nanoengineers at the University of California San diego have developed a 3-D-printed device inspired by the liver to remove dangerous toxins
Woven into uniforms the battery-like supercapacitors could power displays or transistors used for communication.
and display the translated version. It's not the first gadget to tinker with the idea
or 3-D painting#(you know like printing) could also be used to make entirely new parts.
A 3-D Printer Made From E waste#The circle of electronic life: useless printer scraps become a way to print scraps of other things!
Resourceful 33-year-old inventor Kodjo Afate Gnikou of the West african country Togo has created a cheap DIY 3-D printer out of electronic waste scavenged from junk yards.
Gnikou is part of Woelab a hackerspace in the city of Lomã as well as a geographer and an occasional maintenance technician according to a crowd funding page for his project.
All together the printer ended up costing him about $100 a far cry from the hundreds or thousands of dollars you'd shell out to buy one.
He and his printer system are#part of this year's NASA International Space Apps Challenge in Paris proposing to use e waste to make 3-D printers that would print tools to colonize Mars. euronews
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