"The researchers place the nanowires on the Shrinky Dinks plastic as they would for any other substrate,
"The plastic is clamped before baking so that it only shrinks in one direction, so that the wires pack together
The researchers also can control how densely the wires pack by varying the length of time the plastic is heated.
They also are exploring using lasers to precisely shrink the plastic in specific patterns. Nam first had the idea for using Shrinky Dinks plastic to assemble nanomaterials after seeing a microfluidics device that used channels made of shrinking plastic.
He realized that the high degree of shrinking and the low cost of plastic could have a huge impact on nanowire assembly and processing for applications."
"I'm interested in this concept of synthesizing new materials that are assembled from nanoscale building blocks, "Nam said."
For example, experiments have shown that film made of packed nanowires has properties that differ quite a bit from a crystal thin film."
tubular silica template, starting from commercially available, but nonporous fibers. This template is filled then with a special mixture of carbon, silicon dioxide and surfactants,
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,
to regulate the chirality of the grown SWNTS. The (12,6) SWNTS are synthesized directly at an abundance of>92%by using W6co7 catalysts.
This method is also valid for other tungsten-based alloy nanocatalysts to grow SWNTS of various designed chirality."
"Employing tungsten-based alloy nanocrystals with unique structure as catalysts paves a way for the ultimate chirality control in SWNT growth.
But nanotubes that happen to broadside the target unzip into handy ribbons that can be used in composite materials for strength
While experiments reported in the paper were performed with silverhe most desirable metal because it is the most conductive,
and Complexity have succeeded in developing a new technology that introduces metal nanoparticles on the surface of polymer nanocapsules made of cucurbit 6 uril.
The researchers have found that using polymer nanocapsules made of cucurbit 6 uril and metal salts can serve as a versatile platform where equal sized metal nanoparticles can be distributed evenly on the surface of the polymer nanocapsules.
Cucurbit 6 uril has properties which strongly and selectively recognize organic and inorganic chemical species. This makes it possible to use it as a protecting agent
The metal nanoparticle-decorated polymer nanocapsules exhibit the following properties in water: high stability for up to 6 months;
They are made supramolecular constructs up of building blocks called amphiphilic polymers. These nanocarriers hold the guest molecules within the confines of their water-insoluble interior and use their water-soluble exterior to travel through an aqueous environment.
They demonstrated this process with several metals, including silver and platinum. And depending on the materials involved and the electric current,
while the Eiffel Tower achieves similar strength using a lattice of steel beams and struts that is mostly open air, gaining its strength from the geometric arrangement of those elements.
yet remarkably strong, structure down to the microscaleesigning a system that could be fabricated from a variety of materials, such as metals or polymers,
and Jialu Zhang developed this energy-efficient circuit by integrating carbon nanotube (CNT) thin film transistors (TFT) with thin film transistors comprised of indium, gallium and zinc oxide (IGZO)."
The"consumption"of metals to metal ions is then so low that the coating can be effective for several years,
The new material can be applied to a variety of substrates such as plastic, ceramic or metal using conventional techniques such as spraying
#Shatterproof screens that save smartphones University of Akron polymer scientists have developed a transparent electrode that could change the face of smartphones, literally,
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,
when creating metals papers and even fluids. The researchers say the addition of the nanoparticles doesn't change how a material looks doesn't react with anything in it
The researchers claim their nanoparticle bar codes could be used with paper metals fluids and even drugs.
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:
explosive derivative drug polymer and ink. This method has high labeling capacity owing to the small sizes of nanoparticles sharp melting peaks
These whiskers were treated then with a special alloy, which created an electrode. Two electrodes are needed for the powerful energy storage.
They did it-this by adding a very thin plastic sheet around the whiskers and wrapping it around using a metal sheath (the second electrode) after generating nanowhiskers on it (the second electrode and outer covering).
At Caltech the researchers used a process called atomic layer deposition to form a layer of titanium dioxide (Tio2) material found in white paint and many toothpastes and sunscreensn single crystals of silicon gallium arsenide
"Silica-gold nanoparticles provide greater contrast, visibility To get around this, 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
or gold shell you could also vary the scattering ratio of the particles, "he says."
"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.
I was having difficulty with shelling the silica particles, "Mr Duczynski says.""I was able to see some scattering of the iron oxide-gold core-shell nanoparticles,
Sandwiched between the two electrodes is a polymer film that acts as a reservoir of charged ions, similar to the role of electrolyte paste in a battery.
the polymer oozes into the tiny pores in much the same way that melted cheese soaks into the nooks and crannies of artisan bread in a Panini.
When the polymer cools and solidifies it forms an extremely strong mechanical bond.""The biggest problem with designing load-bearing supercaps is preventing them from delaminating,
"Combining nanoporous material with the polymer electrolyte bonds the layers together tighter than superglue.""The use of silicon in structural supercapacitors is suited best for consumer electronics 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.
It abandons the black chromium that was used for panels currently on the market in favor of a multilayer composite of cobalt for its corrosion resistance, manganese for black,
For us, we set the challenge to coat 2 meters long stainless steel tubes, "explains the researcher.
Typically researchers examine zeolite growth by removing crystals from the natural synthesis environment and analyzing changes in their physical properties said Rimer Ernest J. and Barbara M. Henley Assistant professor of Chemical and Biomolecular engineering at UH.
And while most crystals grow through classical means the addition of atoms or molecules to the crystal the presence and gradual consumption of nanoparticles suggested a nonclassical pathway for zeolite crystallization.
Rimer and Lupulescu found that both classical and nonclassical growth models were at work. We have shown that a complex set of dynamics takes place Rimer said.
and low-yield type materials (they used an inert crystal and polymer material to simulate a live explosive in the lab)
and identical plastic containers filled with air water or a clay material.##The technique developed as part of a grant from the Office of Naval Research was presented yesterday at the American Society of Mechanical engineers Dynamic Systems and Control Conference o
#'3-D Painting'Sprays Metal To Repair Or Rebuild Machines Video#GE is showing off a new machine that sprays high-velocity metal powders at broken machines repairing damage in a few
The shirts are woven with a hydrophobic silica also known as silicon dioxide. Self Cleaning Clothing With Hydrophobic Nanotechnology as the Kickstarter says might be a vague enough claim to cause some concern
but we make steel space frames the size of city blocks. We're doing a live build at a festival in Phoenix on October 4th and an installation at a local art museum soon.
So they think that a reinforced ceramic skin will be able to handle re-entry temperatures...
Once that coat dries (about 20 minutes) they apply an acetone solution with small amounts of silica and other proprietary additives.
but the tests that are used currently are designed not for more than three pigments--red green and blue.
C Three double-braided polymer tethers prevent the airship from drifting away. One contains copper conductors that transmit power collected as high as 2000 feet down to a battery or the grid.
The MIT team thinks an all-liquid battery filled with searingly hot molten metals might be a good alternative.
or snowflakes seem to disappear from its beam to clear the vision of the driver a trick that this team of engineers from Carnegie mellon University has been working on for a few years now.
At the crown of the helmet a flexible panel that has a polycarbonate shell attaches with a living hinge.
It is padded with polyurethane and synthetic rubber and can depress up to a quarter of an inch dispersing the force of an impact.#
and to dangle creepily from ceilings is five times stronger than an equal-sized thread of steel would be.
##$40 hidecell. compros Storing your phone in a metal-lined bag will eliminate surveillance possibilities by blocking cell-tower signals along with your Wi-fi GPS and Bluetooth connections.
The Livewire has a lightweight aluminum frame rather than the classic tubular-steel version, and a 74-horsepower electric motor.
Recent solutions have used shape memory alloys (SMAS) pneumatic actuators and electroactive polymers each with their own advantages but also with disadvantages.
or single dielectric elastomer actuators (DEAS) on top of each other in an antagonistic configuration in order to create an actuator that allows bidirectional actuation and passive folding.
Each DEA consists of a thin elastomer membrane between two compliant electrodes the opposing charges on each electrode generate an electrostatic force (Maxwell stress) which squeezes the membrane causing thinning and expansion
Further by using a silicon type elastomer a fast response speed and good positioning control can be achieved.
Self-assembly of this kind can be found in nature#from molecules forming regular crystals
Despite being made from alloys and polymers to make it as light and flexible as possible the exoskeleton weighs in at around 60kg.
For someone who is paraplegic a major issue when using an exoskeleton is that the person is not able to feel their legs
Although the functionality of the hand has been demonstrated to be lifelike the appearance of a hand made of plastics iron tendons
so the team is working on creating a sensitive polymer skin to make the appearance of the hand more realistic and more usable in everyday life situations.
The current design uses a combination of hardened metal parts and rubber to reduce peak forces. 2d prototypeto validate the mechanics
and steel cables instead of tendons. 3d printed plastic parts work like bones and a rubber coating acts as the skin.
The integrated circuits are manufactured on rolls of one micron thick plastic film making them easily scalable and cheap to produce.
Although lightweight and mechanically robust the ethyl polypropylene foam chassis we used in the proof-of-concept vehicle was difficult to manufacture
We opted instead for constructing the chassis out of laser-cut acetal plastic a higher-powered flight motor and a new propeller.
Finally a high energy density Lithium-Ion Polymer battery is used to power all the electronics and actuators contained onboard.
and a two-component thermosetting polymer to build up objects on any working surface that the polymer can adhere to including floors walls and ceilings without the need for additional support structures.
and is among the first plastics processors to deploy a Baxter robot. It is being used for repetitive tasks like picking up parts off a conveyor
In our case, we used a conductive polymer for the actuators. A feature of these actuators is theye powerful, yet extremely compact.
The 200nm thick implant is made predominantly of silicone covered with 35nm thick microcracked gold conducting tracks
The electrodes contained within the implant are made of a unique mix of silicone and platinum microbeads allowing the implant to function
Robbe Mini Wing RC styrofoam airframe Electronics: Pixhawk PX4 Flight Management Unit Battery: Thunder Power RC G6 Pro Lite 25c Lipo 350mah 2s Motors:
studded with cylinders of ceramic, that can endlight weaves around objects coated with it, creating a cloak.
The cloak is a thin Teflon sheet (light blue) embedded with many small, cylindrical ceramic particles (dark blue.
The cloak is a thin Teflon sheet (light blue) embedded with many small, cylindrical ceramic particles (dark blue.
Secondly, if this water gets to the steel reinforcements--in concrete we have all these steel rebars
and calcium lactate into capsules made from biodegradable plastic and adding the capsules to the wet concrete mix.
London, is made of two cylindrical chambers of silicon elastomers that extend and bend. Each cylinder contains a sack of granular material embedded in a flexible membrane that is also packed in a vacuum.
steel, cement and other industries producing most of the country greenhouse gas emissions. The program is meant to complement the Obama administration Clean Power Plan,
The motors are six-micrometer-long tubes with an outer polymer surface that holds a chemical enzyme carbonic anhydrase designed to speed up the reaction between carbon dioxide and water and form bicarbonate.
#Tough-as-Steel Glass Breaks Mold Glass is notoriously breakable. Just ask any twelve-year-boy carrying a bat and searching for his baseball.
They say theye created glass that nearly as strong as steel. Making the material seems surprisingly simple.
The result was a transparent glass nearly as strong as steel and iron. e will establish a way to mass-produce the new material shortly,
That materialbbreviated GSTONSISTS of a thin layer of an alloy of germanium, antimony, and tellurium.
they standard chipmaking technology to outfit a chip with a silicon nitride device, known as a waveguide,
Advancing everyday materials The plastics employed for 4-D printing represented a small subset of materials that might be transformed,
engineers design a Complementary Metal Oxide Semiconductor (CMOS) circuit and can expect it to work.
where solder-bumping the photonic subsystem onto the electronic control chip will be the early packaging solution.
growing germanium crystals on amorphous substances at temperatures low enough for fabricating electronics as well. Such approaches, focused on the long term, will achieve monolithic integration for chips with an electronic front end with optics embedded in the back end
If engineers require a polymer material to have specific properties strength, resilience, size to name a few then we need to question
including plastics and metals. Simultaneously, the cost of 3-D printers has fallen sufficiently to make them household consumer items.
In the present version, molten glass is loaded into a hopper in the top of the device after being gathered from a conventional glassblowing kiln.
or repelled by, a metal surface by changing the polarity of the voltage applied to the metal.
in turn, allows control over the rate of heat transfer between the metal and the liquid.
or quality controlled-based on their polymerization capacity, more specifically their ability to transition from a fluid to fibril matrix state.
Geniphys collagen polymers allow scientists to grow cells within a highly reproducible, physiologically relevant 3-D collagen fibril matrix that they can customize.
Harbin's startup Geniphys is currently manufacturing research-grade collagen polymer and standardized polymerization kits that support creation and customization of 3-D cell culture systems.
With the patient in a prone position, the doctor affixes a small plastic box containing two LEDS to the patient's shin.
It is a gel-like material called an electroactive polymer that can potentially mimic human movement
Initially working with Lew Meixler on a federal Cooperative Research and development Agreement in the Plasma Surface Laboratory, she solved the problem by treating the metal (steel or titanium) with a plasma.
This changed the metal's surface and made the gel adhere more closely to the metal PPPL was also involved with crucial tests of the material last summer,
Rasmussen is a synthetic polymer chemist, who founded RAS Labs in 2003. She began working with PPPL in the early stages of the company from 2007 through 2011.
"Rasmussen holds a Phd in chemistry, specialty polymer chemistry, from Virginia Tech and a master's degree in biology, specialty biophysics, from Purdue University.
Currently, ceramic composites consisting of ionic and electronic conductive components like those in this study are under consideration for membrane separation devices that provide oxygen for enhanced conversion of coal and natural gas
The PNNL study shows how to create particles with a similar reactivity to platinum that replace some of the platinum with Earth-abundant metals.
It may be used to create alloy nanomaterials for solar cells, heterogeneous catalysts for a variety of chemical reactions, and energy storage devices."
and morphology of the alloy nanoparticles on surfaces,"said Dr. Grant Johnson, a PNNL physical chemist who led the study.
The result is a layer of bare nanoparticles made from two different metals that is free of capping layers, residual reactants,
Once the metals are locked into a vacuum chamber in the aggregation region argon gas is introduced. In the presence of a large voltage the argon becomes ionized
and vaporizes the metals through sputtering. The metal ions travel through a cooled region where they collide with each other
Creating the alloy particles in the gas phase provides a host of benefits. The conventional solution-based approach often results in clumps of the different metals
rather than homogeneous nanoparticles with the desired shape. Further, the particles lack a capping layer.
"This allows us to create alloys with consistent elemental constituents and conformation. Furthermore, the kinetically limited gas-phase approach also enables the deposition of intermediate species that would react away in solution."
and Technology (KAIST) has developed a hyper-stretchable elastic-composite energy harvesting device called a nanogenerator. Flexible electronics have come into the market
and hyper-stretchable elastic-composite generator (SEG) using very long silver nanowire-based stretchable electrodes. Their stretchable piezoelectric generator can harvest mechanical energy to produce high power output (4 V) with large elasticity (250%)and excellent durability (over 104 cycles.
The microfluidic chip was designed by Autocad software and manufactured from a widely used silicon-based organic polymer known as PDMS.
#Crystal breeding factory uncovered A breakthrough in understanding the way in which crystals develop will have a major impact for the pharmaceutical, chemical and food industries.
Lancaster University chemists in collaboration with international colleagues have uncovered a'Crystal Nuclei Breeding Factory'which, they say,
"Crystal'seeds'(very small crystals) are added to the process to act as a'template'to ensure more of the same shape
and size of crystals are produced.""""The rule of the garden isf you sow a single seed you should get a single plant.
However with crystals, a single seed causes thousands of new crystals to form, almost as if'breeding'is taking place.
Fluids, used in the process, shear the weakly tethered new crystals from the seed crystal surface allowing the surfaces to be further available for a repeat process
and the new crystals to go on to act as seed crystals themselves.""This is a big step forward,
size and type of crystals to design.""For some drugs, having the correct'handedness'is essential as you need the right key in the lock to make the drugs work.
Current ideas are that molecules of one of the mirror images came together and led to a chance formation of a mirror crystal which, subsequently, induced massive crystallisation of the same image."
"Thanks to this study, we now know how such a single crystal seed could have amplified its effect
and given rise to thousands of new crystals of the same image,"adds Professor Anwar A
#Using composite material samples, NRL scientists predict aspects of F/A-18 performance The U s. Naval Research Laboratory (NRL) has built a robot to pull, bend,
and twist samples of the composite materials used to build F/A-18s and other aircraft.
"It's a sample of advanced composite, made of resin reinforced by carbon epoxy fiber."
"is actually stronger than steel.""The F/A-18 Hornet became the U s. Navy and Marine corps'first strike fighter in 1978;
as set out in the Composite materials Handbook-MIL 17. The approach starts with testing fibers and matrix materials;
"As private companies and the military continue to look to advanced composites for new aerospace and other applications,
he would have to"capture the behavior of the composites in any possible combination of loading;"
what might happen to an advanced composite in the real world. Advanced composites age in a very particular way."
"The resin that's between the fibers starts developing little micro-cracks,"says Michopoulos, which can cause the resin to separate from the fibers or the fibers to break."
"You cannot write on a small piece of paper a single equation that encapsulates how composites behave.""From 2008-2012, the Cooperative Research Centre Advanced Composite Structures (CRC-ACS) of Australia provided specimens to NRL to test
and characterize, while they did their own tests using more traditional methods. Universities in Australia and the Massachusetts institute of technology MIT also participated in the project, with support from the Office of Naval Research ONR.
being efficient to thrive Using Composite material Samples, NRL Scientists Predict Aspects of F/A-18 Performance The U s. Naval Research Laboratory (NRL) robot,
U s. Naval Research Laboratory/Jamie Hartman While Michopoulos is interested in continuing to run experiments on composites,
"Characterization of composite materials,"he says, "is a domain that I'm fortunate to be able to expresss an industrialization process, an application."
"Using Composite material Samples, NRL Scientists Predict Aspects of F/A-18 Performance Dr. John Michopoulos with the robot he
of big-name debuts including Cafe Coffee Day and airline Indigo. Shares hit their lowest level in about a year last week,
which runs the Indigo airline, is seeking a $400 million listing. Analysts warn more uncertainty is given in store the US Federal reserve is expected to raise interest rates as early as September,
#New Polymer Gel Could Create Edible Devices for Ultra-Long Drug Delivery A team of scientists has developed a polymer gel that could allow for the development of long-acting devices that reside in the stomach,
However, these devices, often created with nondegradable elastic polymers, bear an inherent risk of intestinal obstruction as a result of accidental fracture or migration.
Now, researchers at MIT Koch Institute for Integrative Cancer Research and Massachusetts General Hospital (MGH) have created a polymer gel that overcomes this safety concern
This polymer is ph-responsive: It is stable in the acidic stomach environment but dissolves in the small intestine near-neutral ph,
and folding of devices into easily ingestible capsules meaning this polymer can be used to create safe devices designed for extremely prolonged residence in the stomach. ne of the issues with any device in the GI TRACT is that there the potential for an obstruction,
of this new polymer gel for creating gastric devices. Shiyi Zhang, a postdoc at the Koch Institute, is the paper lead author.
the researchers were interested in developing a polymer with elastic properties. n elastic device can be folded into something small,
But the size and shape of existing devices with elastic polymers have been limited by safety concerns,
Because of this, the researchers wanted their polymer to also be enteric or have a mechanism that would enable it to pass through the stomach unaltered before disintegrating in the intestines. o lower any possible risk of obstruction,
the researchers synthesized an elastic polymer and combined it in solution with a clinically utilized enteric polymer.
Adding hydrochloric acid and centrifuging the solution resulted in a flexible, yet resilient, polymer gel that exhibits both elastic and enteric properties.
The researchers used the gel polycaprolactone (PCL), a nontoxic, degradable polyester, to construct several device prototypes.
They first created ring-shaped devices by using the gel to link arcs of PCL in a circular mold.
the polymer gel dissolved, allowing for the safe passage of the small PCL pieces without obstruction.
Improving adherence The combined enteric and elastic properties of this polymer gel could significantly improve the design and adoption of gastric-resident devices.
With further work in adjusting the polymer composition or the design of the system they say that they could tailor devices to release drugs over a specific timeframe of up to weeks or months at a time.
Lithium metal, for example, can store about 10 times as much energy per gram, but is extremely dangerous,
It is stronger than steel yet many times lighter more conductive than copper and more flexible than rubber.
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