which is entitled"Colloidal Nanoparticles as Catalysts and Catalyst Precursors for Nitrite Hydrogenation"on Thursday 15 january a
The team's most recent advance also brings the field closer to realizing carbon nanotube transistors as a feasible replacement for silicon transistors in computer chips and in high-frequency communication devices,
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.
Computer simulations sharpen insights into molecules The resolution of scanning tunnelling microscopes can be improved dramatically by attaching small molecules or atoms to their tip.
Scientists from Forschungszentrum Jülich and the Academy of Sciences of the Czech republic in Prague have used now computer simulations to gain deeper insights into the physics of these new imaging techniques.
Last a technique known as anisotropic ion beam milling (IBM) is used to etch through the mask to make an array of holes creating the nanoporous metal.
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
and IBM's T. J. Watson Research center have developed a prototype DNA reader that could make whole genome profiling an everyday practice in medicine.
The technology we've developed might just be the first big step in building a single-molecule sequencing device based on ordinary computer chip technology said Lindsay.
This made it impossible to use computer chip manufacturing methods to make devices said Lindsay.
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 Asus has a quantum dot notebook. nd there nothing in between that quantum dots can address,
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.
Additionally nanocomposite materials are used already in fenders and panels in the automotive and textile industry.
eliminating adhesion issues that plagued the transfer of platinum catalysts to common electrodes like transparent conducting oxide.
and bind to them increasing the chances of forming that essential Plug in addition and very importantly these platelets are engineered to dissolve into the blood after their usefulness has run out.
This new transfer technique gets us one step closer to using Mos2 to create flexible computers Cao adds.
#Engineers efficiently'mix'light at the nanoscale The race to make computer components smaller and faster
Current computer systems represent bits of informationhe 1's and 0's of binary codeith electricity Circuit elements,
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,
That doesn't work for a computer chip.""To reduce the volume of the material and the power of the light needed to do useful signal mixing,
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,
Information in a photonic computer system could be encoded in a wave's frequency, or the number of oscillations it makes in a second.
Being able to manipulate that quality in one wave with another allows for the fundamentals of computer logic."
Current panels can process only 20 percent of the solar energy they take in. By applying the nanowires the surface area of the panels would increase
and allow more efficient solar energy capture and conversion. The wires could also be applied in the biomedical field to maximize heat production in hyperthermia treatment of cancer.
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."
#Breakthrough in molecular electronics paves the way for DNA-based computer circuits in the future In a paper published today in Nature Nanotechnology,
The central technological revolution of the 20th century was the development of computers, leading to the communication and Internet era.
A computer with the memory of the average laptop today was the size of a tennis court in the 1970s.
Yet while scientists made great strides in reducing of the size of individual computer components through microelectronics,
they have been less successful at reducing the distance between transistors, the main element of our computers.
and extremely expensive to miniaturize an obstacle that limits the future development of computers. Molecular electronics, which uses molecules as building blocks for the fabrication of electronic components,
which could in turn be used in computers, are DNA molecules. Nevertheless, so far no one has been able to demonstrate reliably and quantitatively the flow of electrical current through long DNA molecules.
which could lead to a new generation of computer circuits that can be sophisticated more, cheaper and simpler to make. k
the new mobile device would likely cost ten times less, around $10, 000.0
#Team reveals molecular structure of water at gold electrodes When a solid material is immersed in a liquid the liquid immediately next to its surface differs from that of the bulk liquid at the molecular level.
David Prendergast a staff scientist in the Molecular Foundry and researcher in the Joint Center for Energy storage Research (JCESR) has developed computational techniques that allow his team to accomplish this translation Using supercomputer facilities at Berkeley Lab
and IBM Almaden Research center focuses on block copolymers a special class of polymers that under the proper conditions, will segregate on a microscopic scale into regularly spaced"domains"of different chemical composition.
Just recently, Intel Corp. announced that it had in production a new generation of chips with a 14-nanometer minimum feature size.
working with IBM, demonstrated a new measurement technique*that uses low energy or"soft"X rays produced by the Advanced Light source at Lawrence Berkeley National Labs to probe the structure of the BCP film from multiple angles.
and refining computer models.""Our measurements are both fairly time-consuming, so they're not something industry can use on the fab floor,
and let the computers figure it out.""""It's just so expensive and time-consuming to test out a new process,
Using powerful supercomputers researchers at UWA discovered that graphene nanoflakes can significantly enhance the rates of a range of chemical reactions.
cores of nuclear reactor, solar farms, etc. to the system that is going to use it (thermal storage systems, steam generators, chemical reactors, etc..
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
and tablets smart phones and other portable devices photovoltaics batteries and bioimaging. The technique has proved so successful that Hersam
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.
Our simple'diode'panel could obtain high brightness efficiency of 60 Lumen per Watt which holds excellent potential for a lighting device with low power consumption said Norihiro Shimoi the lead researcher and an associate professor of environmental studies at the Tohoku University.
The electrons then fly through the vacuum in the cavity and hit the phosphor screen into glowing.
Thus the new flat-panel device has compared smaller energy loss with other current lighting devices which can be used to make energy-efficient cathodes that with low power consumption.
Postdoctoral researcher Menno Veldhorst lead author on the paper reporting the artificial atom qubit says It is really amazing that we can make such an accurate qubit using pretty much the same devices as we have in our laptops and phones.
and designed said Peng Yin senior author of the paper Wyss core faculty member and Assistant professor of Systems Biology at Harvard Medical school.
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 which attract and bind to one another in a predictable manner.
This capability should open up entirely new strategies for fields ranging from computer miniaturization to energy and pathogen detection n
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
The new structures can lead to sensors and chips for future devices like smartphones computers and medical equipment.
Their experiments show that future computer chips could be based on three-dimensional arrangements of nanometer scale magnets instead of transistors.
to computer logic architectures that replicate the versatility and response time of a biological neural network.""While more investigation needs to be done,
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.
"A tool like this could be interfaced with a laptop to provide high-quality screening capability to save lives in poor countries in remote parts of the world,
"Personal electronic devices such as smart phones, ipads, etc. can last much longer before recharging.""In addition to potential commercial applications, there are many military uses for the technology.
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
and light along the same tiny wire a finding that could be a step towards building computer chips capable of transporting digital information at the speed of light.
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."
The method reported in the journal ACS Nano could someday vastly improve the outlook for patients.
Using a handheld Raman scanner in a mouse model that mimics human GBM the researchers successfully identified
Supercapacitors have an expanding range of applications as their capabilities increase from powering computer memory backup to powering electric vehicles.
#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,
and tablets a
#Biomimetic photodetector'sees'in color (Phys. org) Rice university researchers have created a CMOS-compatible biomimetic color photodetector that directly responds to red green
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.
"Being able to keep mobile devices working for longer, or do away with batteries completely by tapping into the stray energy that is all around us is an exciting concept.
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.
#Used-cigarette butts offer energy storage solution A group of scientists from South korea have converted used-cigarette butts into a high-performing material that could be integrated into computers handheld devices electrical vehicles and wind turbines to store energy.
Florian Libisch and Professor Joachim Burgdörfer (TU Vienna) provided computer simulations to calculate how the energy of the electrons changes in both materials
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,
and has become essential to the integrated circuits and transistors that run most of our computers.
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
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