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| Antioxidant (27) | |
| Emulsifier (21) | |
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| Food additive (13) | |
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BMW i3 carbon fiber reinforced plastic passenger cell; Ford 1. 0-liter Ecoboost engine; Honda accord plug-in powertrain;
Patagonia and Stella Mccartney, have committed to eliminate their use of fabrics that contain endangered forest fiber;
or non-wood fibers like straw i
#Google Facebook Others Launch Sustainability Platform Unilever Coca-cola Google Facebook Nike Pepsico and dozens of other major companies and nonprofits have launched a digital sustainability platform
and made up of long fibers that can be cross-linked together. The teamâ#has been maintaining native cartilage in the lab
The new method spins the drug into silklike fibers that quickly dissolve when in contact with moisture, releasing higher doses of the drug than possible with other topical materials such as gels or creams
showing that the fiber materials can hold 10 times the concentration of medicine as anti-HIV gels currently under development.
Ball says. e have achieved higher drug loading in our material such that you wouldn need to insert a large amount of these fibers to deliver enough of the drug to be helpful.
SPINNING THE FABRIC The team created the soft fibers using a process called electrospinning. They first dissolved a polymer
so the researchers looked at different ingredients for the fiber that would allow for the highest concentration of drug with the fastest-possible release in the body.
Because the electrically spun fibers have a large surface area, researchers were able to create samples in
By adjusting the ingredients in the fibers, researchers were able to dissolve the drug in about six minutes,
no matter how much drug mass was in the fiber. The research team says the soft, dissolving fibers could be rolled into a cardboard tampon applicator for insertion or built into the shape of a vaginal ring,
similar to those used for contraception. The material can accommodate different anti-HIV drugs and the team is testing several others for effectiveness.
#This sticky process builds collagen fibers Rice university rightoriginal Studyposted by Mike Williams-Rice on October 28 2014new research offers a detailed look at how synthetic collagen fibers self-assemble via their sticky ends.
or as scaffolding in regenerative medicine Two papers in the Journal of the American Chemical Society the first published in May and the second this month show precisely how mimetic peptides developed at Rice may be aligned to form helices with sticky ends that allow them to aggregate into fibers
and fibers start forminghartgerink says. s soon as you have a fiber NMR doesn t work any more.
and synthesized a series of peptides with large sticky ends that drive fiber assemblyhartgerink says.
but different arrangements and showed those with extensive sticky ends quickly self-assembled into fibers.
when you use charged pairs properly you get fibers. And when you don t you don t get fibers. nderstanding the fine details of collagen assembly presents the possibility of synthetic collagens for specific functions Hartgerink says. number of biomaterials use natural collagen
and there are advantages to replacing them with synthetic collagenshe says. ne of the main advantages is that we move away from health
The experimental system that the researchers used consists of two tiny directly coupled silica microtoroid (doughnut-shaped) resonators each coupled to a different fiber-taper coupler that aids in guiding light from a laser diode to photodetectors;
the fiber is tapered in the middle so that light can between the fibers and the resonators. Yang says the concept will work in any coupled physical system.
Loss is delivered to one of the microresonators by a tiny device a chromium-coated silica nanotip
They followed fibers from the hippocampus to specific cells in the cortex and showed that turning off other cells in the hippocampus did not affect retrieval of that memory. he cortex can t do it alone it needs input from the hippocampuswiltgen says. his has been a fundamental assumption in our field for a long time
but if you put in the middle another step then you can easily walk up. he addition of PID2 caused the polymer blend to form fibers
The fibers serve as a pathway to allow electrons to travel to the electrodes on the sides of the solar cell. t s like you re generating a street
#How to make carbon thread without clumps Made into fibers single-walled carbon nanotubesâ line up like a fistful of raw spaghetti noodles thanks to a new process.
The tricky bit according to Rice university chemist Angel Martã is keeping the densely packed nanotubes apart before they re drawn together into a fiber.
Earlier research at Rice by chemist and chemical engineer Matteo Pasquali a coauthor of the new paper used an acid dissolution process to keep the nanotubes separated until they could be spun into fibers.
The tubes are forced ultimately together into fibers when they are extruded through the tip of a needle.
continuous fiber on the Pasquali lab s equipment. The strength and stiffness of the neat fibers also approached that of the fibers previously produced with Pasquali s acid-based process. e didn t make any modifications to his system
and it worked perfectlymartã says. The hair-width fibers can be woven into thicker cables and the team is investigating ways to improve their electrical properties through doping the nanotubes with iodide. he research is basically analogous to
what Matteo doesmartã says. e used his tools but gave the process a spin with a different preparation so now we re the first to make neat fibers of pure carbon nanotube electrolytes.
That s very cool. asquali says that the spinning system worked with little need for adaptation
#Stretchy, bendy, stronger-than-ever graphene fiber Researchers have created a simple and scalable method of making strong,
For instance, removing oxygen from the graphene oxide fiber results in a fiber with high electrical conductivity. Adding silver nanorods to the graphene film would increase the conductivity to the same as copper,
much better than other carbon fibers, says Mauricio Terrones, professor of physics, chemistry and materials science and engineering,
Penn State. e believe that pockets of air inside the fiber keep it from being brittle.
and wound on itself with an automatic fiber scroller, resulting in a fiber that can be knotted
and stretched without fracturing. The researchers reported their results in a recent issue of ACSNANO. he importance is that we can do almost any material,
Earlier research found a way last year to make GQDS from relatively cheap carbon fiber
In the new design photons are applied to an outer ring of the spiraled resonator with a tiny light-dispensing optic fiber;
or ultrastrong composites that could replace carbon fiber. Or, the researchers speculate, a science fiction idea of a space elevator that could connect an orbiting satellite to Earth by a long cord that might consist of sheets of CVD graphene,
The carbon fiber shell of the aerial vehicles is wafer-thin but resilient. With proper funding the vehicles could be tested in a real-world hurricane in two or three years.
#To measure this movement the researchers used a fiber interferometer. A fiber optic cable pointed upward at this system bounces light off the underside of the silicon nitride layer enabling the researchers to determine how far the structure has bent upwards.#
disc-like head holding up to 16 spools of various types of carbon-fiber ribbons. This allows ISAAC to not only swap quickly between materials,
The idea is that the ribbons are made up of partially cured resins mixed with carbon fibers.
##which we now suspect to be related a fiber affair##American technology companies#freaked out. Google, Microsoft, Apple and others appeared utterly complicit with the NSA,
#However, even if it turns out they were entirely ignorant of the NSA s fiber-tapping ways,
slide the carbon fiber frame thought the paper s cleave and attach the crash-proof bumper/battery pack to the front.
First, the 3-D printer would build a carbon fiber truss structure that would act as a frame for the system.
Its frame is created from carbon fiber to keep the aircraft lightweight and It seats two people.
#Ristroph glued together several tubes of carbon fiber to build this: a sphere with four wings attached to it that propels it as a jellyfish swims.
cotton or other fibers are extruded seamlessly to form layers of a breathable fabric, ideal for usage in sportswear, bandages and undergarments.
substituting a super capacitor made from advanced carbon fiber-based nanomaterials that can be integrated into the body panels of the vehicle.
often mixed with carbon fibers to form composites. Some 50%of the new Airbus a350 jet, for example, will be made from composites.
letting go of the dirt on their fibers. Next, it swaps to dirt-magnet mode,
including the EDR 100gb/s Switch-IB Infiniband switch and Linkx 100gb/s copper and fiber cables
and the silk protein is extracted from natural silk fibers. Like the leaves of a plant, the material requires only exposure to sunlight and a small amount of water to produce oxygen."
for the research because it naturally produces biofilms that contain so-called"curli fibers, "which are amyloid proteins that attach to surfaces.
The fibers were modified by adding peptides that can capture select nonliving materials. In this case, the researchers chose peptides that could capture gold nanoparticles and quantum dots.
The fiber muscles can lift 100 times as much as human muscles of the same length
or even to make clothing with fibers that expand or contract to keep the wearer cool or warm.
The twisted fiber creates an artificial muscle that can drive a heavy rotor at a speed of more than 10000 revolutions per minute.
when they twisted the fiber even more it produced coiling as happens when you over-twist a rubber band.
The fiber muscles could be used to power the muscles in androids or exoskeletons the researchers said.
In the case of robotic muscles electrical energy not temperature change would drive the contraction of fibers.
The coiled fibers would simply expand when the air temperature warms to let the clothing breathe.
By contrast the fiber muscles are inexpensive to make and easy to commercialize Baughman said.
Our electronic whiskers consist of high-aspect-ratio elastic fibers coated with conductive composite films of nanotubes and nanoparticles.
and silver nanoparticles that are patterned on high-aspect-ratio elastic fibers. The nanotubes provide both flexibility allowing the whiskers to bend
#MIT's multifunctional fiber implant could revolutionize neural prosthetics Today cutting edge neural implants can passively read brain activity,
so what new tricks do these fibers bring to the table? Flexible: these fiber based neural implants are much more flexible than the current industry standard, multielectrode arrays and hooked eedlestyle stimulators.
The brain itself is composed of some of the softest tissue in the body, so harder implants that don bend with their surrounding biological environment can easily shift
or chemical, they are so small that several fibers can be bundled together in a customized cable designed for the area it is designed to interface with.
The most exciting thing about these new fibers is undoubtedly the ability to bundle together different functionalities in the same implant,
Scientists at MIT Bioelectronics group not as interested in creating applications for these new multifunctional fibers as they are in perfecting the technology,
The material is produced commonly in reels of very thin straight fiber. To transform the fiber into coils Holschuh borrowed a technique from another MIT group that previously used coiled nickel-titanium to engineer a heat-activated robotic worm.
Shape-memory alloys like nickel-titanium can essentially be trained to return to an original shape in response to a certain temperature.
To train the material Holschuh first wound raw SMA fiber into extremely tight millimeter-diameter coils then heated the coils to 450 degrees Celsius to set them into an original or trained shape.
However at a certain trigger temperature (in this case as low as 60 C) the fiber will begin to spring back to its trained tightly coiled state.
and fiber says Teradiode cofounder and vice president Robin Huang a former Lincoln Laboratory researcher and Terablade co-inventor.
and fiber that first transfer energy from diode lasers into a medium usually a crystal before converting it into a laser beam.
because it naturally produces biofilms that contain so-called curli fibers amyloid proteins that help E coli attach to surfaces.
Each curli fiber is made from a repeating chain of identical protein subunits called Csga which can be modified by adding protein fragments called peptides.
By programming cells to produce different types of curli fibers under certain conditions the researchers were able to control the biofilms properties
This puts control of curli fiber production in the hands of the researchers who can adjust the amount of AHL in the cells environment.
which forms curli fibers that coalesce into a biofilm coating the surface where the bacteria are growing.
If both are present the film will contain a mix of tagged and untagged fibers.
To add quantum dots to the curli fibers the researchers engineered cells that produce curli fibers
along with the bacteria that produce histidine-tagged fibers resulting in a material that contains both quantum dots and gold nanoparticles.
And the ground receiver is based on arrays of small inexpensive telescopes that are coupled fiber to highly efficient superconducting nanowires a photon counting technology that was brought to its high state of maturity by joint MIT and Lincoln Lab teams.
#New fibers can deliver many simultaneous stimuli The human brain complexity makes it extremely challenging to study not only because of its sheer size,
By producing complex multimodal fibers that could be less than the width of a hair, they have created a system that could deliver optical signals and drugs directly into the brain,
In addition to transmitting different kinds of signals, the new fibers are made of polymers that closely resemble the characteristics of neural tissues,
To do that, her team made use of novel fiber-fabrication technology pioneered by MIT professor of materials science
Flexible fiber-based probes The result, Anikeeva explains, is the fabrication of polymer fibers hat are soft and flexible
and look more like natural nerves. Devices currently used for neural recording and stimulation, she says,
called a preform, of the desired arrangement of channels within the fiber: optical waveguides to carry light, hollow tubes to carry drugs,
and drawn into a thin fiber, while retaining the exact arrangement of features within them.
A single draw of the fiber reduces the cross-section of the material 200-fold, and the process can be repeated,
making the fibers thinner each time and approaching nanometer scale. During this process, Anikeeva says, eatures that used to be inches across are now microns.
Combining the different channels in a single fiber she adds, could enable precision mapping of neural activity,
While a single preform a few inches long can produce hundreds of feet of fiber, the materials must be selected carefully so they all soften at the same temperature.
The fibers could ultimately be used for precision mapping of the responses of different regions of the brain or spinal cord,
diverse collection of multifunctional fibers, tailored for insertion into the brain where they can stimulate
as the electrodes in tiny supercapacitors (which are essentially pairs of electrically conducting fibers with an insulator between).
onvincingly demonstrates the impressive performance of niobium-based fiber supercapacitors. The team also included Phd student Mehr Negar Mirvakili and professors Peter Englezos and John Madden, all from the University of British columbia s
A photonic crystal fiber was used to generate (quasi-white light) supercontinuum to probe the spectral response of select regions within the array.
Further the developed process is based on the continuous and mass-produced process of carbon fiber making it much easier for full-scale commercialization.
since this process is based on the continuous and mass-produced process of carbon fiber. Explore further:
To synthesize the carbon fibers, the chemists first prepare a porous, 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,
and the fibers themselves are correspondingly more stable.""Nanostructured materials have great potential for the efficient conversion
much better than other carbon fibers,"said Mauricio Terrones, professor of physics, chemistry and materials science and engineering, Penn State."
"We believe that pockets of air inside the fiber keep it from being brittle.""This method opens up multiple possibilities for useful products, according to Terrones and colleagues.
For instance, removing oxygen from the graphene oxide fiber results in a fiber with high electrical conductivity. Adding silver nanorods to the graphene film would increase the conductivity to the same as copper,
and wound on itself with an automatic fiber scroller, resulting in a fiber that can be knotted
and stretched without fracturing. The researchers reported their results in a recent issue of ACSNANO."
special fibers could also be developed with nanostructures to conduct and store energy. More immediate applications could be seen in the design
That could lead to specially treated clothing fibers being able to hold enough power for big tasks.
if flexible solar cells and these fibers were used in tandem to make a jacket, it could be used independently to power electronic gadgets and other devices."
#Flexible supercapacitor raises bar for volumetric energy density Scientists have taken a large step toward making a fiber-like energy storage device that can be woven into clothing
The fiber-structured hybrid materials offer huge accessible surface areas and are highly conductive. The researchers have developed a way to continuously produce the flexible fiber enabling them to scale up production for a variety of uses.
To date they've made 50-meter long fibers and see no limits on length. They envision the fiber supercapacitor could be woven into clothing to power medical devices for people at home or communications devices for soldiers in the field.
Or they say the fiber could be a space-saving power source and serve as energy-carrying wires in medical implants.
Yuan Chen a professor of chemical engineering at NTU led the new study working with Dingshan Yu Kunli Goh Hong Wang Li Wei and Wenchao Jiang at NTU;
Qiang Zhang at Tsinghua; and Liming Dai at Case Western Reserve. The scientists report their research in Nature Nanotechnology.
To improve the energy density by volume the researchers designed a hybrid fiber. A solution containing acid-oxidized single-wall nanotubes graphene oxide and ethylenediamine
Sheets of graphene one to a few atoms thick and aligned single-walled carbon nanotubes self-assemble into an interconnected prorous network that run the length of the fiber.
The process using multiple capillary columns will enable the engineers to make fibers continuously and maintain consistent quality Chen said.
The researchers have made fibers as long as 50 meters and found they remain flexible with high capacity of 300 Farad per cubic centimeter.
In testing they found that three pairs of fibers arranged in series tripled the voltage
Three pairs of fibers in parallel tripled the output current and tripled the charging/discharging time compared to a single fiber operated at the same current density.
When they integrate multiple pairs of fibers between two electrodes the ability to store electricity called capacitance increased linearly according to the number of fibers used.
Using a polyvinyl alcohol/phosphoric acid gel as an electrolyte a solid-state micro-supercapacitor made from a pair of fibers offered a volumetric density of 6. 3 microwatt hours per cubic millimeter
which is comparable to that of a 4-volt-500-microampere-hour thin film lithium battery. The fiber supercapacitor demonstrated ultrahigh energy density value
while maintaining the high power density and cycle stability. We have tested the fiber device for 10000 charge/discharge cycles
and the device retains about 93 percent of its original performance Yu said while conventional rechargeable batteries have a lifetime of less than 1000 cycles.
The fiber supercapacitor continues to work without performance loss even after bending hundreds of times Yu said.
and structurally consistent over their length the fibers can also be woven into a crossing pattern into clothing for wearable devices in smart textiles.
They plan to scale up the technology for low-cost mass production of the fibers aimed at commercializing high-performance micro-supercapacitors.
In addition The team is interested also in testing these fibers for multifunctional applications including batteries solar cells biofuel cells
The old fiber would be only a single-lane highway says Fontaine. Now we can add multiple lanes.
he has shown already that his multiplexer can send six light streams down 497 miles of fiber without losing data along the way.
Right now we're working on a 10-mode device an order of magnitude over existent single-mode fiber Fontaine says.
and carbon fiber and she doesn't have any insulation so when the motors first crank up it s a noisy ride.
combination of fibers and yarns with electrical propertiesworked into the fabrics of the seat cover
and complex controls. e developed a piece of carbon fiber that completely programmable and can automatically open
or they go from strands or fibers into 2-D sheets or 3-D objects.
MIT professor of materials science and engineering and director of the MIT Microphotonics Center. e don look at this the way we still look at fiber,
which is to stuff as much bandwidth as we can onto the fiber and send it as far as we can,
By swapping in different genes for the tail fiber they generated phages that target several types of bacteria. ou keep the majority of the phage the same and all youe changing is the tail region,
the researchers combed through databases of phage genomes looking for sequences that appear to code for the key tail fiber section, known as gp17.
made of resin reinforced by carbon epoxy fiber.""So that little thing that's so light,"he says,
The approach starts with testing fibers and matrix materials; then the tests get, as the handbook states,"increasingly more complicated,"until reaching the level of structural subcomponent (or higher).
"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."
"A continuous accumulation of micro-cracking (that leads to a softening of the material) can be used as a metric for material degradation assessment."
To meet the demand for food, fuel and fiber from a growing and increasingly affluent population,
The resulting pattern is a 3d mat of a seemingly random, extremely thin fiber array.
With their newly minted method of fiber formation, Liquidity pore size is down around. 2 microns.
extruding ABS-carbon fiber composite over the course of 40 hours, before the body was milled to achieve a more refined look.
and the material supplier for the ABS-carbon fiber composite we were able to reduce the material
This capability supports"materials by design,"a concept that enables the development of unique new materials for function-specific applicability, such as lighter, stronger fiber composites for airplane wings;
and even count nucleosomes across the chromatin fibers and determine their organisation. STORM overcomes the diffraction limit that normally restricts the spatial resolution of conventional microscopes
so that its 3-D structure would be comparable to the geometry and spacing of connective tissue fiber in a human heart.
so that its 3-D structure would be comparable to the geometry and spacing of connective tissue fiber in a human heart.
and stability on fibers to reduce human health and environmental concerns, said Nidia Trejo, a Cornell doctoral student in the field of fiber science.
Trejo, who with Margaret Frey, professor of fiber science, authored the study, comparative study on electrosprayed, layer-by-layer,
and chemically grafted nanomembranes loaded with iron oxide nanoparticles, in the Journal of Applied Polymer Science, July 14.
randomly oriented fibers that only can be seen with electron microscopes. These nanomembranes have a high surface-to-volume ratio
Adhering nanoparticles of iron oxide to nylon fiber is done in three ways: electrospraying, which facilitates uniform nanoparticle placement in the fibers;
layer-by-layer assembly, where particles are coated on the fiber electrostatically; or chemical bonding. or the membrane, it important to evaluate particle retention and stability,
Trejo explained. ou would want the nanoparticles to stay on the Nylon 6 membranes so the material can have function throughout the life use.
Researchers in professor Margaret Frey lab create fibers hundreds of times thinner than a human hair that can capture toxic chemicals and pathogens.
The fibers have been designed and combined to prevent the spread of agricultural chemicals and to capture toxic substances in liquids.
The fibers are a fast, easy and inexpensive way to concentrate on E coli, cholera toxin or carcinogens and to improve accuracy of detection.
Eventually, these fibers will be part of devices as inexpensive and easy to use as home pregnancy tests and will diagnose diseases without requiring specialized laboratories particularly useful in regions with limited access to doctors and hospitals.
but the fiber-like nucleic acids that we want to detect can actually fit through them. It almost like a natural sieve. arly identification of disease biomarkers and pathogenic microbes is possible with the swift and sensitive detection of nucleic acids.
but the fiber-like nucleic acids that we want to detect can actually fit through them. It almost like a natural sieve.
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