They applied a technique developed by paper co-author Brad Mcrae of the Nature Conservancy that's based on how electricity finds the path of least resistance when traveling across circuit boards.
#2-D electronics take a step forward: Semiconducting films for atom-thick circuitsscientists at Rice university and Oak ridge National Laboratory (ORNL) have advanced on the goal of two-dimensional electronics with a method to control the growth of uniform atomic layers of molybdenum disulfide (MDS.
MDS a semiconductor is one of a trilogy of materials needed to make functioning 2-D electronic components.
They may someday be the basis for the manufacture of devices so small they would be invisible to the naked eye.
For truly atomic circuitry this is important Lou said. If we get this material to work then we will have a set of materials to play with for complete complicated devices.
But there was still a piece missing for the materials to be full partners in advanced electronic applications.
and MDS together (with hbn) into what would be a novel 2-D semiconductor component.
and more importantly so can the defects that alter the material's electronic properties. In order to improve the properties of 2-D materials it's important to first understand how they're put together at a fundamental scale Idrobo said.
These are very different materials with different electronic properties and band gaps. Putting one on top of the other would give us a new type of material that we call Van der waals solids Ajayan said.
and her laboratory at the University of Antwerp in Belgium will be one of the first published in Jove Behavior a new section of the video journal that focuses on observational and experimental techniques that seek to understand human and animal
This strength will be invaluable as scientists continue to develop new flexible electronics and ultrastrong composite materials.
Strong large-area graphene can be used for a wide variety of applications such as flexible electronics
#¢Regulate electronic cigarettes as a tobacco and medical product. Brands with flavours such as vanilla or chocolate attract children
which means they hold great potential for electronic devices and power transmission. The recent finding by the University of Arkansas-led team is important to further understand superconductivity Chakhalian said.
Further work along these lines could produce such structures as patterned nanotube arrays on diamond that could be utilized in electronic devices Ajayan said.
Graphene and metallic nanotubes are also highly conductive in combination with metallic substrates they may also have advanced uses in electronics he said.
#Stitching defects into world s thinnest semiconductorin pioneering new research at Columbia University scientists have grown high-quality crystals of molybdenum disulfide (Mos2) the world's thinnest semiconductor
Through beautiful images of strikingly symmetric stars and triangles hundreds of microns across they have uncovered key insights into the optical and electronic properties of this new material
either conducting or insulating to form the basic on-off switch for all digital electronics. The study is published in the May 5 2013 issue of Nature Materials.
Our results will help develop ways to use this new material in atomically thin electronics that will become integral components of a whole new generation of revolutionary products such as flexible solar cells that conform to the body of a car.
Earlier work from Columbia demonstrated that monolayer Mos2 has an electronic structure distinct from the bulk form
which can be metals semiconductors dielectrics and even superconductors. This material is the newest in a growing family of two-dimensional crystals says Arend van der Zande a research fellow at the Columbia Energy Frontier Research center and one of the paper's three lead authors.
With the addition of the monolayer molybdenum disulfide and other metal dichalcogenides we have all the building blocks for modern electronics that must be created in atomically thin form.
To do this they built tiny transistors the most basic component in all of electronics out of the crystals
and saw that the single defective line of atoms at the grain boundaries could drastically change the key electronic and optical properties of the Mos2.
which enables us to integrate it into large-scale flexible electronics and solar cells. The crystal synthesis optical measurements electronic measurements and theory were performed all by research groups at Columbia Engineering.
The growth and electrical measurements were made by the Hone lab in mechanical engineering; the optical measurements were carried out in the Tony Heinz lab in physics.
The structural modeling and electronic structure calculations were performed by the David Reichman lab in chemistry.
This breakdown is expected for more complex products such as electronics where the energy that goes into manufacturing fine integrated circuits can outweigh the energy expended in processing raw materials.
But for less-advanced products--particularly those that don't require electronic components--the opposite is often the case.
For example running shoes unlike electronics require very little energy to use aside from the energy needed to infrequently wash the shoes.
Similar to the chloroplasts in green plants that carry out photosynthesis our artificial photosynthetic system is composed of two semiconductor light absorbers an interfacial layer for charge transport
The paper is titled A Fully Integrated Nanosystem of Semiconductor Nanowires for Direct Solar Water Splitting.
Yang and his colleagues also use A z-scheme in their system only they deploy two Earth abundant and stable semiconductors--silicon
The majority charge carriers from both semiconductors recombine at the ohmic contact completing the relay of the Z-scheme similar to that of natural photosynthesis. Under simulated sunlight this integrated nanowire-based artificial photosynthesis system
The rise of the internet and the move from paper to digital information has driven a need for large-volume electronic data storage.
By comparison this same circuitry is suppressed in couch potato mice. Digging a little deeper Kelly's team determined that PPARÎ/Î'is connected to micrornas via an intermediary called estrogen-related receptor (ERRÎ.
#An electronic nose can tell pears and apples apartswedish and Spanish engineers have created a system of sensors that detects fruit odours more effectively than the human sense of smell.
Researchers from the Polytechnic University of Valencia (UPV Spain) and the University of Gävle (Sweden) have created an electronic nose with 32 sensors that can identify the odours given off by chopped pears and apples.
which reaches the tower with the sensors which are metal oxide semiconductors that detect odorous compounds such as methane
One example would be the wine making sector Pelegrã commented where an electronic nose capable of distinguishing the quality
and an electronic nose can detect which substances the animals recognise then we could diagnose the disease earlier
and technological compatibility with the manufacturing technologies currently used by the semiconductor industry Savin explains.
In solar cells it is not possible to use as pure a form of silicon as in for example microelectronics
and accordingly impurities cannot be controlled in solar cells by means of the same methods as those used in microelectronics.
We attached GPS transmitters to these birds that collect location data Kessler says. These transmitters relay the datasets to a satellite system
so we are able to remotely monitor the movement of these birds very closely something that has never been done before.
Once captured and anesthetized the lions'sex was determined they were weighed measured fit with an ear tag and a collar with a GPS transmitter.
#GUMBOS technology promises new drugs, electronic devicesmention a breakthrough involving gumbo technology in New orleans and people think of a new twist on The Local Dish the stew that's the quintessence of southern Louisiana cooking.
what may be an advance in developing GUMBOS-based materials with far-reaching medical electronic and other uses.
Technological solutions to these problems that employ the latest developments in materials science chemistry biology and electronics are capable of greatly enhancing the performance of these systems.
which consist of several groups of dimmable light emitting diodes with different colour spectra. This kind of lamp can also be programmed to provide lighting that is adjusted to the needs of the plants.
if they wish to successfully implement THE WHO Framework Convention guidelines on taxation. i Council Directive CD 2011/64/EUSTORY Source:
They could be important to materials scientists using graphene in applications where its intrinsic strength is a key feature like composite materials and stretchable or flexible electronics.
The CNC substrates on which the solar cells are fabricated are optically transparent enabling light to pass through them before being absorbed by a very thin layer of an organic semiconductor.
The development and performance of organic substrates in solar technology continues to improve providing engineers with a good indication of future applications said Kippelen who is also the director of Georgia Tech's Center for Organic Photonics and Electronics (COPE.
which studies the use and development of printed electronics. Last year the center created the first-ever completely plastic solar cell.
History video: http://www. youtube. com/watch? feature=player embedded&v=G7-Blxmkufmstory Source: The above story is provided based on materials by University of Texas at Austin.
For each species the checklist provides distributional information electronic links to images of living or dried plants and information on publicly available DNA sequences.
The researchers conducted surveys in 2003 using high-frequency microphones to record the ultrasonic echolocation pulses that bats use to hunt insects.
or energy--of moving from one step to another in a complex logistical operation or they could represent the strength of the correlations between the movie preferences of customers of an online video service.
But how does this ancestral solitary phenotype split to produce specialised reproducers (queens) and brood carers (workers) when a species becomes social?
in order to be really good reproducers. Longstanding analyses based on the fossil record holds ants and wasps in a clade known as Vespoidea with bees as a sister group.
If pest control measures aren't taken these annual plants can serve as amplifiers producing lots of viruses
and can serve as an amplifier for viruses. This all-in-one combination could increase virus pressure in crop areas unless mitigated.
snusresearchers at the University of Illinois at Chicago's Institute for Health Research and Policy have received a $2. 3 million federal grant to study how young adults use hookahs snus electronic cigarettes and other
Electronic cigarettes also known as e-cigs are operated battery devices that produce a vaporized or aerosolized nicotine--known to be addictive
The participants will carry electronic diaries to record how and when they use tobacco each day.
For example 2-D boron is more conductive than graphene because of its unique electronic structure and atomic arrangement.
another new paper from Rice on a hybrid graphene-hexagonal boron nitride shows the need for a 2-D semiconductor to complement the material's conducting
This week they were glued to their terminals during the first full-system scaling to see
(with video)--flight at many times the speed of sound --and to simulate the turbulent flow over an entire airplane wing.
Single-atom-thick patterns combine conductor and insulatorrice University scientists have taken an important step toward the creation of two-dimensional electronics with a process to make patterns in atom-thick layers that combine a conductor and an insulator.
This week's contribution by Rice offers manufacturers the possibility of shrinking electronic devices into even smaller packages.
That would make circuits on about the same scale as in current semiconductor fabrication he said.
Even at one atom thick the hexagonal array of carbon atoms has proven its potential as a fascinating electronic material.
Graphene-based electronics require similar compatible 2-D materials for other components and researchers have found hexagonal boron nitride (h-BN) works nicely as an insulator.
and h-BN via chemical vapor deposition (CVD) created sheets with pools of the two that afforded some control of the material's electronic properties.
of which are necessary to make electronic devices. The new technique also began with CVD. Lead author Zheng Liu a Rice research scientist and his colleagues first laid down a sheet of h-BN.
Liu said the next step is to place a third element a semiconductor into the 2-D fabric.
That would give new options to manufacturers toying with the idea of flexible electronics he said.
In an accompanying editorial Cynthia A. Thomson Ph d. and Patricia A. Thompson Ph d. both of the University of Arizona Cancer Center write that the findings of the study support the emphasis on greater intake for vegetables
#New insight into graphene grain boundariesusing graphene--either as an alternative to or most likely as a complementary material with--silicon offers the promise of much faster future electronics along with several other advantages over the commonly used semiconductor.
These boundaries scatter the flow of electrons in graphene a fact that is detrimental to its successful electronic performance.
Beckman Institute researchers Joe Lyding and Eric Pop and their research groups have given now new insight into the electronics behavior of graphene with grain boundaries that could guide fabrication methods toward lessening
We obtained information about electron scattering at the boundaries that shows it significantly limits the electronic performance compared to grain boundary free graphene Lyding said.
For electronics you would want to be able to make it on a wafer scale. Boundary free graphene is a key goal.
The more difficult you make that the lower the quality of the electronic performance of any device made from that graphene.
Using outpatient electronic medical records the researchers identified whether the participants developed cardiovascular disease diabetes mellitus hypertension (high blood pressure) and metabolic syndrome during the five-year period.
They also can serve as light-activated semiconductors drug-delivery devices and even sponges to soak up oil.
A video of children using Piface with the Scalextric and birdbox during the Manchester Science Festival can be seen at http//www. youtube. com/watch?
From The Dr. Oz Show to Youtube videos experts say you can reclaim those pearly whites simply by mixing fruit such as strawberries with some baking soda
Now the team led by Dzurak has discovered a way to create an artificial atom qubit with a device remarkably similar to the silicon transistors used in consumer electronics known as MOSFETS.
Video: http://www. youtube. com/watch? v=kq2qrtgcz3u&feature=youtu. bestory Source: The above story is provided based on materials by University of New south wales.
It is used as a cleaner for optics electronics and metals as well as a solvent for aerosol-applied adhesives such as those used in foam cushion manufacturing.
of Massachusetts Amherst has taken a major step in developing long-sought polymer architecture to boost power-conversion efficiency of light to electricity for use in electronic devices.
Video: https://www. youtube. com/watch? v=GED8H79MUSSSTORY Source: The above story is provided based on materials by Stanford university.
#Graphene imperfections key to creating hypersensitive electronic noseresearchers have discovered a way to create a highly sensitive chemical sensor based on the crystalline flaws in graphene sheets.
The imperfections have unique electronic properties that the researchers were able to exploit to increase sensitivity to absorbed gas molecules by 300 times.
They created a micron-sized individual graphene grain boundary in order to probe its electronic properties and study its role in gas sensing.
A theoretical chemistry group at UIC led by Petr Kral was able to explain this attraction and additional electronic properties of the grain boundary.
Salehi-Khojin said it should be possible to tune the electronic properties of graphene grain-boundary arrays using controlled doping to obtain a fingerprint response
--thus creating a reliable and stable electronic nose. With the grain boundary's strong attraction for gas molecules and the extraordinarily sharp response to any charge transfer such an electronic nose might be able to detect even a single gas molecule Salehi-Khojin believes
and would make an ideal sensor. Other co-authors are Reza Hantehzadeh Artem Baskin Nikita Repnin Canhui Wang and Robert Klie of UIC and Morteza Kayyalha and Yong Chen of Purdue University.
He said nanoribbon films also open a path toward embedding electronic circuits in glass that are both optically and RF transparent.
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Left to their own devices carbon nanotubes form clumps that are perfectly wrong for turning into the kind of strong conductive fibers needed for projects ranging from nanoscale electronics to macro-scale power grids Earlier research at Rice by chemist
Lead researcher Professor Paul Thornalley says The way Nrf2 works is very similar to sensors in electronic devices that rely on continual reassessment of their surroundings to provide an appropriate response.
A study using high-speed video has shown that mosquitoes don't exactly fly between drops so much as the raindrops bounce off them.
One of these is multiple-input multiple-output (MIMO) a scheme that employs multiple antennae to boost data rates without the need for additional channels or transmitter power.
or WARP the system allowed the team to perform a side-by-side comparison of multiuser MIMO for UHF and for both 2. 4 gigahertz and 5. 8 gigahertz Wifi.
#Phosphorus a promising semiconductor: Physicists find 2-D form pays no heed to defectsdefects damage the ideal properties of many two-dimensional materials like carbon-based graphene.
these metal compounds have also been considered for electronics because of their inherent semiconducting properties. In pristine dichalcogenides atoms of the two elements alternate in lockstep.
Semiconductors are the basic element of modern electronics that direct and control how electrons move through a circuit.
But when a disturbance deepens a band gap the semiconductor is less stable. When chaos reigns in the form of multiple point defects
The researchers also show it may be possible to tune the electronic properties of 2-D phosphorus by altering (aka doping) it with foreign atoms.
This should be of value to electronics manufacturers Yakobson said. Carbon and zinc may boost positive conductivity
In fact 2-D phosphorus has more in common with three-dimensional silicon the most common element in semiconducting electronics like computer chips.
However point defects in silicon can change its properties unlike point defects in phosphorus. This suggests 2-D phosphorus could also be a candidate for high-performance electronics.
Shanta Dube associate professor of epidemiology and biostatistics at Georgia State's School of Public health is a lead author of the recently released study Intentions to smoke cigarettes among never-smoking U s. middle and high school electronic cigarette
and after being sprayed after outfitting the dogs with telemetry jackets and transmitters to monitor heart rate.
Watch a video of Tuskan on the importance of selection in trees at http://bit. ly/Tuskan14fingerprints.
An iridescent blur to the human eye their movements can be captured with clarity only by high-speed video.
The researchers used surveillance video and telemetric monitoring to identify any symptoms of complications in all groups such as abdominal bleeding gastrointestinal bleeding aspiration pneumonia seizures or blood disorders.
Watch the video here: http://youtu. be/nrt44ttiiy4. Story Source: The above story is provided based on materials by Texas Tech University.
The environment surrounding the atom-thick carbon material can influence its electronic performance according to researchers at Rice
They expect the finding to be important to manufacturers considering the use of graphene in electronic devices.
The experimental results are a warning for electronics manufacturers. For any future device designs using graphene we have to take into account the influence of the surroundings said Kono.
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#Electronic cigarettes: Many questions, limited researchelectronic cigarettes (ECIGS) are booming in popularity --but there's still only limited evidence on their potential health risks
Potential Health Concerns But Limited Data on ECIG Safety Also known as electronic nicotine delivery systems ECIGS consist of a heating element that turns an e-liquid solution into vapor
Physical link to strange electronic behaviorscientists have new clues this week about one of the baffling electronic properties of the iron-based high-temperature superconductor barium iron nickel arsenide.
The research team said they hope the findings will prove useful in explaining the underlying physics of directionally dependent electronic phenomena that have been observed in several different types of superconducting materials.
Most high-temperature superconductors and many closely related compounds exhibit a number of exotic electronic phases particularly as they approach the critical temperature where superconductivity arises said Pengcheng Dai professor of physics and astronomy at Rice and the study
This spin excitation anisotropy sheds new light on the microscopic origins of electronic phases in the iron pnictide superconductors said Si Rice's Harry C. and Olga K. Wiess
which radio-transmitter tags were put on the ears of 409 calves at two ranches both near Immokalee.
Further researchthe fast growing field of electronics and optoelectronics demands precise material deposition with application-specific optical electrical chemical and mechanical properties.
A new study shows that light-emitting diodes (LEDS) can give greenhouse growers other lighting options that produce favorable results.
Light-emitting diodes (LEDS) can offer growers benefits such as higher energy efficiencies and a longer operating life. To determine whether the use of narrow-spectra high-intensity LEDS is can be a practicable supplemental lighting source for greenhouse grown annual bedding plant seedlings researchers Wesley Randall
and Roberto Lopez from Purdue University designed a series of lighting experiments on plugs of Antirrhinum Catharanthus Celosia Impatiens Pelargonium Petunia Tagetes Salvia and Viola.
blue LEDS compared with those grown under high-pressure sodium lamps. Stem caliper of Antirrhinum Pelargonium
blue LEDS compared with seedlings grown under HPS lamps. The quality index was significantly higher for Petunia Salvia and Viola under 85:15 70:30 and 100:0 red:
blue LEDS than under HPS lamps respectively. Overall the results indicate that seedling quality for the majority of the species tested under supplemental light LEDS providing both red
and blue light was similar or higher than those grown under high-pressure sodium lamps. Our results indicate that providing supplemental lighting from LEDS
or high-pressure sodium lamps has a positive influence on seedling root dry mass height and stem caliper leading to high-quality bedding plant seedlings
although blue LEDS have a higher electrical conversion efficiency compared with red LEDS blue light is a higher energy light
Using automated audio recorders and analysis software the technology is trained'to automatically recognise the calls of individual species in this case the nightjar.
Lyuba's full-body CT scan which used an industrial scanner at a Ford testing facility in Michigan was the first of its kind for any mammoth.
and in Wisconsin in 2010 using medical scanners. But because of Lyuba's size (about 110 pounds and slightly smaller than a baby elephant) the researchers could not acquire 3-D data from her entire body.
They finally succeeded in October 2010 at Ford motor Co.'s Nondestructive Evaluation Laboratory in Livonia Mich. using a scanner designed for finding flaws in vehicle transmissions.
First discovered five years ago Rice's silicon oxide memories are a type of two-terminal resistive random-access memory (RRAM) technology.
This memory is superior to all other two-terminal unipolar resistive memories by almost every metric Tour said.
which means RRAM can be used as the basis of rewritable random-access memory. RRAM is under development worldwide and expected to supplant flash memory technology in the marketplace within a few years
Microelectronics fabrication technologies based on silicon are widespread and easily understood but until the 2010 discovery of conductive filament pathways in silicon oxide in Tour's lab the material wasn't considered an option for RRAM.
These microchips were able to check on the return to the hive of individuals thanks to a series of electronic sensors.
#Position statement on e-cigarettes by American Thoracic Societyexperts from the world's leading lung organizations have released a position statement on electronic cigarettes focusing on their potential adverse effects on human health
The position of the Forum of International Respiratory Societies (FIRS) on electronic nicotine delivery devices includes:
â#¢The safety of electronic cigarettes has not been demonstrated adequately. â#¢The addictive power of nicotine
and its untoward effects should not be underestimated. â#¢The potential benefits of electronic nicotine delivery devices including harm reduction
and safety claims regarding electronic nicotine delivery devices should be subject to evidentiary review. â#¢Adverse health effects for third parties exposed to the emissions of electronic cigarettes cannot be excluded. â#¢Electronic nicotine
#¢If electronic nicotine delivery devices are permitted they should be regulated as medicines and subject to the same evidentiary review of other medicines. â#¢If electronic nicotine delivery devices are regulated not as medicines they should be regulated as tobacco products. â#¢Research supported by sources other than the tobacco
or electronic cigarette. â#¢industry should be carried out to determine the impact of electronic nicotine delivery devices on health in a wide variety of settings. â#¢The use
and population effects of electronic nicotine delivery devices should be monitored. â#¢All information derived from this research should be conveyed to the public in a clear manner.
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http://www. nbi. ku. dk/english/sciencexplorer/the space/xshooter/video/See film: Cosmic Explosions: http://www. nbi. ku. dk/english/sciencexplorer/the space/cosmic explosions/video/Story Source:
The above story is provided based on materials by University of Copenhagen-Niels Bohr Institute. Note: Materials may be edited for content and length.
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