#Heart-on-a-Chip Device Holds Promise for Drug-Screening When UC Berkeley bioengineers say they are holding their hearts in the palms of their hands,
This led them to believe that Nano-85 itself was actually causing the VLPS to break apart.
That led to further investigations into nanomaterials. One accomplishment was a so-called molecular ruler made of gold nanoparticles tethered to DNA strands,
The key discovery that led to the formation of Optokey was the development of the nanoplasmonic resonators to dramatically improve the signal and reliability of Raman spectroscopy.
Strontium titanate, often used as an insulating material in dielectric capacitors, isn ordinarily a ferroelectric at room temperature.
antenna-rectifier diodes that convert light into DC current, have been built using multiwall carbon nanotubes with integrated nanoscale rectifiers.
a device that combines the functions of an antenna and a rectifier diode to convert light directly into DC current.
and the rectifier diode had to have the ability to operate rapidly to capture electromagnetic wave oscillations.
The 10nm diode functions at such a high frequency due to the ultra-low capacitance, which is in a few attofarads. rectenna is basically an antenna coupled to a diode,
but when you move into the optical spectrum, that usually means a nanoscale antenna coupled to a metal-insulator-metal diode.
The closer you can get the antenna to the diode the more efficient it is.
So the ideal structure uses the antenna as one of the metals in the diode
which is the structure we made-Prof Baratunde Cola, Georgia Tech The rectennas were grown on rigid substrates
and is designed to track an LED, which was added to the mouthpiece of the Jamboxx. After obtaining research grants from the New york state Trade Adjustment Assistance Center (NYSTAAC) and funds from My Music Machine, Inc. and support from SUNY Poly CNSE,
The use of low-cost components such as LEDS, reflectors and USB detectors, combined with the all-plastic housing and lenses, will allow future versions of the prototype to be mass-produced h
The security tag consists of a paper tag with an embedded battery and two coloured LEDS.
VLC uses energy efficient light emitting diodes to transmit data inexpensively, securely, cleanly and with virtually unlimited bandwidth.
or any on-body devices or sensors that users have to constantly wear or carry, just LED LIGHTS on the ceiling and photodiodes on the floor.
They built the-first-of-its-kind light sensing testbed in the Dartnets lab using off-the-shelf LED LIGHTS, photodiodes, and microcontrollers.
Key to this technology is the memristor (a combination of"memory"and"resistor"),an electronic component
Unlike conventional transistors, which rely on the drift and diffusion of electrons and their holes through semiconducting material,
the resulting device would have to be loaded enormous with multitudes of transistors that would require far more energy."
and memory storage devices users will continue to seek long after the proliferation of digital transistors predicted by Moore's Law becomes too unwieldy for conventional electronics."
#Study Reveals the Genetic Start-up of a Human Embryo An international team of scientists led from Sweden's Karolinska Institutet has mapped for the first time all the genes that are activated in the first few days of a fertilized human egg.
Small molecules also are key elements in technologies like solar cells and LEDS. However, small molecules are notoriously difficult to make in a lab. Traditionally
The use of low cost components such as LEDS reflectors, and USB detectors, combined with the all-plastic housing and lenses will allow for future versions of the prototype to be mass-produced
The organic molecules of this chemical are used widely in electronic devices such as solar cells, LEDS and transistors.
The limitations of early telescopes led to questions about the accuracy of the constant counting of sunspots for the last 300 years, leading to the Group Sunspot number being started in 1998.
bits are stored typically on a pair of silicon transistors, one of which is switched on while the other is off.
The key step taken by the Australian scientists was to reconfigure traditional transistors so that they can work with qubits instead of bits.
'The silicon chip in your smartphone or tablet already has around one billion transistors on it, with each transistor less than 100 billionths of a metre in size.'
'We've morphed those silicon transistors into quantum bits by ensuring that each has only one electron associated with it.'
While the resulting inability to degrade lysosomal DNA led to lethal autoimmunity, once again cgas inhibition rescued the mice, the researchers report t
and erase p-n junctions--one of the central components of a transistor--in a topological insulator for the first time.
#Electronics get a power boost with the addition of a simple material The tiny transistor is the heart of the electronics revolution,
"It's tough to replace current transistor technology because semiconductors do such a fantastic job,
if they could add vanadium oxide close to a device's transistor it could boost the transistor's performance.
The material can be used to make hybrid field effect transistors, called hyper-FETS, which could lead to more energy efficient transistors.
Earlier this year, also in Nature Communications, a research group led by Suman Datta, professor of electrical and electronic engineering,
and lowering the energy requirements of the transistor. The implementation of vanadium dioxide can also benefit existing memory technologies
The use of low cost components such as LEDS reflectors, and USB detectors, combined with the all-plastic housing and lenses will allow for future versions of the prototype to be mass-produced d
or a monolayer and be used in making nanoscale transistors in other electronics. The material was thought originally to be two-dimensional in nature because of the ease with
Their results showed that Vasotide led to decreased blood vessel growth in all three models when the agent was administered by either systemic injection,
and erase one of the central components of a transistor--the p-n junction--in a topological insulator for the first time.
"Some researchers have wanted to make transistors out of carbon nanotubes but the problem is that they grow in all sorts of directions,
graduate student Jayer Fernandes and recent graduate Aditi Kanhere--are exploring ways to integrate the lenses into existing optical detectors and directly incorporate silicon electronic components into the lenses themselves s
graduate student Jayer Fernandes and recent graduate Aditi Kanhere--are exploring ways to integrate the lenses into existing optical detectors and directly incorporate silicon electronic components into the lenses themselves s
#Breakthrough to the development of energy saving devices for the next generation Wide-gap semiconductors such as gallium nitride (Gan) are used widely for optical devices such as blue LED
Fully alternative technologies, from carbon-based batteries to supercapacitors to mini-nuclear charging, have been predicted to kill lithium ion for many years running,
electronic components are required which perform common functions akin to our regular communication technology; such as transmission, multiplexing, demultiplexing,
#Microfluidic cooling yields huge performance benefits in FPGA processors As microprocessors have grown in size and complexity,
Modern microprocessors generate tremendous amounts of heat, but they don generate it evenly across the entire die.
away from the transistors. We believe that reliably integrating microfluidic cooling directly on the silicon will be a disruptive technology for a new generation of electronics.
#MIT researchers announce new transistors for more power efficient electronics A material called gallium nitride (Gan) is poised to become the next semiconductor for power electronics,
Massachusetts institute of technology spin out Cambridge Electronics Inc (CEI) has announced a line of Gan transistors and power electronic circuits that promise to cut energy usage in data centres, electric cars,
Many of these power-electronics systems rely on silicon transistors that switch on and off to regulate voltage but, due to speed and resistance constraints,
CEI Gan transistors have at least one-tenth the resistance of such silicon-based transistors, which allows for much higher energy-efficiency.
While Gan transistors have several benefits over silicon, safety drawbacks and expensive manufacturing methods have kept largely them off the market.
Power transistors are designed to flow high currents when on, and to block high voltages when off.
But Gan transistors are typically ormally onmeaning, by default, theyl always allow a flow of current.
The researchers developed Gan transistors that were ormally offby modifying the structure of the material. e always talk about Gan as gallium and nitrogen
CEI is currently using its advanced transistors to develop laptop power adaptors that are approximately 1. 5 cubic inches in volume the smallest ever made.
Among the other feasible applications for the transistors is better power electronics for data centres run by Google
The silicon transistors used today have constrained a power capability that limits how much power the car can handle.
and metabolism, finding that relatively low-level concentrations of the emulsifiers resulted in distinct alterations to the gut microbial ecosystem (microbiota) and led to low-grade inflammation and the onset of metabolic syndrome.
#Terralux Battles Commoditization By Integrating Smarts With LEDS For Commercial Lighting Refits LED lighting technology has advanced in leaps and bounds in the last few years.
Less than a decade ago, LEDS were both ineffective and expensive. Not only did they have low output,
Fast forward to today and LEDS have improved greatly in efficacy, now demonstrating some of the highest light outputs,
At the same time, the economics of LEDS are now comparable with other light sources. These changes have resulted in LEDS displacing CFLS as the choice for organizations looking to save money
and deliver an environmentally friendly lighting alternative. But while these huge benefits for LED consumers have come to fruition,
LED TECHNOLOGY rapidly becomes commoditized meaning that LED vendors, once selling into a top-level market, now need to compete with other vendors based on price.
The company is pushing an Internet of things (Iot) slant on LED LIGHTS. LEDSENSE units include sensors that can determine building temperature
Advanced sensors provide safety and security information and alerts all through the LED LIGHTS. LEDSENSE is primarily an energy efficiency tool LEDSENSE can,
%But these gains are created not simply through the power reduction that LEDS bring, but rather through combining this benefit alongside smart lighting control.
Previous work in Lewis laboratory led to a major advance in the design. The work showed that adding a nanometers-thick layer of titanium dioxide (Tio2) material found in white paint
he says. nd it doesn need even diodes or selectors, making it one of the easiest ultradense memories to construct.
The combined effect of those patterns led to final images with 62-nanometer resolutionuch better than standard SIM and a threefold improvement over the limits imposed by the wavelength of light."
leaving open a default pathway that led to photoreceptor genesis. The scientists detailed their work in the journal Development,
Leddar Technology Overview Leddar (acronym for light-emitting diode detection and ranging) is patented a sensing technology developed by Leddartech,
Combined with the use of visible or infrared LEDS to perform time-of-flight measurements,
the Leddar sensor's LEDS and emitter optics are used to create a diffuse beam covering a wider area of interest.
Time-of-Flight Principle Leddar sensors use LEDS to generate very short light pulses, typically 100,000 pulses per second.
or more LEDS into a pattern that best fits the photodetector geometry. The purpose of the reception optics is to collect the backscatter of light from objects in that beam onto the photodetector.
its ability to detect multiple objects in each segment and lateral discrimination (multi-element platform), its long detection range with low-power LEDS, real-time object-tracking capabilities, detection
an entirely new stream of electronic components that take advantage of this phenomenon may evolve. The findings of this work have recently been published in the journal Nature Nanotechnology h
#World's highest-performance single-molecule diode created As electronics miniaturization heads towards a theoretical physical limit in the tens of nanometers,
new methods of manufacturing are required to produce transistors, diodes, and other fundamental electronic components. In this vein, a new range of molecule-sized devices have been created in the laboratory,
though with varying results in terms of efficiency and practicality. Now a group of researchers from Berkeley Lab and Columbia University claims to have created the highest-performing,
single-molecule diode ever made, which is said to be 50 times better in performance and efficiency than anything previously produced.
Ordinary diodes are constructed usually from silicon with a p-n (positive-negative) junction created at the point of contact between a positively"doped"semiconductor (that is,
the most common function of such a diode is to permit electric current to flow in one direction only,
As such, a diode used in this way can be seen as a type of flow-control valve that is either"on"or"off".
and so these types of diodes are known as rectifiers. This on/off asymmetric behavior in the nascent field of molecule-sized electronics, on the other hand, is achieved usually by the creation of molecules that chemically emulate the p-n junction.
This is where the Columbia university scientists claim to have made significant improvements with their new single-molecule diode."
we were able to create a diode that resulted in a rectification ratio, the ratio of forward to reverse current at fixed voltage, in excess of 200,
"The asymmetry necessary for diode behavior originates with the different exposed electrode areas and the ionic solution.
particularly as diodes form the basis of many microminiature electronic devices. Since then, a range of devices have been constructed,
including single molecule diodes and transistors. Operating at this nanoscale, though, such devices may emulate their macro counterparts,
and Zhenfei Liu to understand the diode behavior quantitatively.""Zhenfei Liu a postdoctoral fellow at Berkeley Lab and professor Neaton worked with Latha Venkataraman
and Luis Campos from Columbia University to create their high-performance rectifier diode using junctions prepared from symmetric molecules attached to gold electrodes.
To achieve the necessary asymmetric properties required to operate as a diode, the researchers then altered the surface area of the electrodes as they were exposed to an ionic solution.
"The combined Berkeley Lab-Columbia University research team is convinced that the way they have managed to produce a single-molecule diode sets the benchmark for future nonlinear nanoscale device tuning and development, with applications above and beyond just
#Breakthrough photonic processor promises quantum computing leap Optical quantum computers promise to deliver processing performance exponentially faster and more powerful than today's digital electronic microprocessors.
however, photonic circuitry must first become at least as efficient at multitasking as the microprocessors they are designed to replace.
In this way, the coils act as inductors for the application of energy and the production of magnetic fields and allow the body itself to act as a sort of waveguide for those fields.
qubits made from standard silicon transistors In what is likely a major breakthrough for quantum computing, researchers from the University of New south wales (UNSW) in Australia have managed for the first time to build the fundamental blocks of a quantum computer in silicon.
by modifying current-generation silicon transistors, and the technology could scale up to include thousands, even millions of entangled quantum bits on a single chip.
Last year, UNSW scientists were able to create single"CMOS type"qubits that leveraged current transistor technology and silicon-28, a very common isotope of silicon,
The scientists built this logic gate by taking two standard transistors, next to each other, and reconfiguring them so they would only hold a single electron each.
but in the fact that these basic building blocks of quantum computers were built by doing simple modifications to current-generation silicon transistors.
Qubits made from standard silicon transistors In what is likely a major breakthrough for quantum computing, researchers from the University of New south wales (UNSW) in Australia have managed for the first time to build the fundamental blocks of a quantum computer in silicon.
by modifying current-generation silicon transistors, and the technology could scale up to include thousands, even millions of entangled quantum bits on a single chip.
Last year, UNSW scientists were able to create single"CMOS type"qubits that leveraged current transistor technology and silicon-28, a very common isotope of silicon,
The scientists built this logic gate by taking two standard transistors, next to each other, and reconfiguring them so they would only hold a single electron each.
but in the fact that these basic building blocks of quantum computers were built by doing simple modifications to current-generation silicon transistors.
in order to avoid a repeat of the endgateproblems that led some to complain their phone had been curving in their pocket.
Last December, his firm displayed Christmas tree posters with LEDS at NTT Docomo flagship store in Tokyo.
alerting the wearer by turning on a light-emitting diode (LED) light. The researchers, from the Electronics and Telecommunications Research Institute and Konkuk Univ. in the Republic of korea, coated cotton and polyester yarn with a nanoglue called bovine serum albumin (BSA.
Exposure of these specially treated fabrics to nitrogen dioxide led to a change in the electrical resistance of the reduced graphene oxide.
#Scientists Create LEDS From Food, Beverage Waste Most Christmas lights, DVD players, televisions and flashlights have one thing in common:
theye made with light emitting diodes (LEDS. LEDS are used widely for a variety of applications
and have been a popular, more efficient alternative to fluorescent and incandescent bulbs for the past few decades.
Two University of Utah researchers have now found a way to create LEDS from food and beverage waste.
this development can also reduce potentially harmful waste from LEDS generally made from toxic elements.
LEDS are a type of device that can efficiently convert electricity to light. Unlike fluorescent and incandescent bulbs,
LEDS direct 80 percent of the energy consumed to producing light. This is made possible by the fact that LEDS do not require a filament to be heated as incandescent and fluorescent bulbs do.
LEDS can be produced by quantum dots, or tiny crystals that have luminescent properties. Quantum dots (QDS) can be made with numerous materials, some
of which are rare and expensive to synthesize, and even potentially harmful to dispose of. Some research over the past 10 years has focused on using carbon dots (CDS),
to create LEDS instead. Compared to other types of quantum dots CDS have lower toxicity and better biocompatibility,
and subsequently, LEDS. The results were published recently in Physical chemistry Chemical Physics, a journal of the Royal Society of Chemistry.
heated and hardened to solidify the CDS for practical use in LEDS. An environmentally sustainable alternative Currently, one of the most common sources of QDS is cadmium selenide,
To be able to use this waste for creating LEDS which are used widely in a number of technologies would be an environmentally sustainable approach.
Looking forward Sarswat and Free hope to continue studying the LEDS produced from food and beverage waste for stability
and to use these LEDS in everyday devices. To successfully make use of waste that already exists, that the end goal,
About 340 product iterations led to an improved device and better user interface. For instance, around three years ago
really tiny animal the microscopic tardigrade is the inspiration behind a new material that could improve the efficiency of things like LED LIGHTS and solar cells.
researchers who make organic semiconductors using physical vapor deposition things like light-emitting diodes (LEDS) and solar cells noticed that they could sometimes produce glass-coated devices with structured,
When building an LED, getting as much of the light that hits the surface to go up
Progress slowing The inexorable advance in computing power over the past 50 years is largely thanks to the ability to make increasingly smaller silicon transistors,
According to Moore's law, a rough rule first articulated by semiconductor researcher Gordon E. Moore in 1965, the number of transistors on a given silicon chip would roughly double every two years.
True to his predictions, transistors have gotten ever tinier with the teensiest portions measuring just 5 nanometers,
Beyond that, shrinking transistors to the bitter end may not do much to make computers faster. Long commute time The main roadblock to faster computers is not flagging processor speed,
Carbon nanotubes (CNTS) have electrical properties similar to those of conventional silicon transistors. In a head-to-head competition between a silicon transistor and a CNT transistor,"hands down, the CNT would win,
"Shulaker told Live Science.""It would be a better transistor; it can go faster; it uses less energy."
"However, carbon nanotubes grow in a disorderly manner, "resembling a bowl of spaghetti, "which is no good for making circuits,
however, was slow and bulky, with relatively few transistors. Now, they have created a system for stacking memory and transistor layers,
with tiny wires connecting the two. The new 3d design has slashed the transit time between transistor and memory,
and the resulting architecture can produce lightning-fast computing speeds up to 1, 000 times faster than would
It could help protect sensitive electronic components on microchips such as mobile devices, high-power engines and magnetic resonance imaging (MRI SCANNERS from the heat,
For example, if a display item has embedded an LED light pulsing a signal at a specific frequency,
#Hundredfold improvement in temperature mapping reveals the stresses inside nanoscale transistors New nanoscale thermal imaging technique shows heat building up inside microprocessors,
Fan-cooled heat sink on a microprocessor. Plasmon energy expansion thermometry, inset, uses a beam of electrons to track where heat is produced
modern microelectronic circuits contain billions of nanometer scale transistors, each generating tiny amounts of heat that collectively can compromise the performance of the device.
and to realize the next generation microprocessors. Electrons passing through a sample excite collective charge oscillations called plasmons.
which are directly related to the local temperature within an integrated circuit or transistor. Based on these principles
or tablet already has around one billion transistors on it, with each transistor less than 100 billionths of a metre in size, said Dr Menno Veldhorst,
a UNSW Research Fellow and the lead author of the Nature paper. ee morphed those silicon transistors into quantum bits by ensuring that each has only one electron associated with it.
We then store the binary code of 0 or 1 on the pinof the electron, which is associated with the electron tiny magnetic field,
This led us to the idea to exploit similar structures such as the lithium-ion batteries
The scientists hope to find a process to produce a magnetic switch that works according to the same principle as an electric transistor:
"Some researchers have wanted to make transistors out of carbon nanotubes, but the problem is that they grow in all sorts of directions,
Key to this technology is the memristor (a combination of"memory"and"resistor"),an electronic component
Unlike conventional transistors, which rely on the drift and diffusion of electrons and their holes through semiconducting material,
the resulting device would have to be loaded enormous with multitudes of transistors that would require far more energy."
and memory storage devices users will continue to seek long after the proliferation of digital transistors predicted by Moore's Law becomes too unwieldy for conventional electronics."
Yap says this study is a continuation of past research into making transistors without semiconductors.
"And it doesn't even need diodes or selectors, making it one of the easiest ultradense memories to construct.
These negatively charged ions produce an electric field that effectively serves as a diode to hinder error-causing crosstalk.
and it lit up 22 to 55 light-emitting diodes. The authors acknowledge funding from the Science and Engineering Research Board of India I
#New optical chip lights up the race for quantum computer The microprocessor inside a computer is a single multipurpose chip that has revolutionised people's life,
"said Asghar Aryanfar, a scientist at Caltech, who led the new study that's published this week on the cover of The Journal of Chemical Physics, from AIP Publishing.
These attributes should lead to new LEDS and display devices not only with precisely matched colors--better color accuracy and brightness--but also with improved performance lifetime and improved ease of manufacturing."
an organic compound found in plants, bacteria, algae and trees, to build more efficient and longer-lasting energy storage devices or supercapacitors.
This can be used to produce more sustainable capacitor devices with higher power density and faster charging abilities compared to rechargeable batteries.
Lightweight and high-power density capacitors are of particular interest for the development of hybrid and electric vehicles.
and erase p-n junctions--one of the central components of a transistor--in a topological insulator for the first time.
For example, every handheld device has hundreds of capacitors, which are dielectric components that can store
Phosphors are common light emitters used in light bulbs, LEDS and elsewhere. They are extremely efficient
The typical scale of eletronic transistors--the basis of contemporary electronic devices--is less than 100 nanometers
wheres the typical scale of photonic transistors stays on the scale of several micrometers. Nanostructures that are able to compete with the electronic structures--for example,
Our work represents an important step towards novel and efficient active photonic devices--transistors, logic units, and others.
Now scientists report in the journal ACS Nano("Hierarchical Porous Nitrogen-Doped Carbon Nanosheets Derived from Silk for Ultrahigh-Capacity Battery Anodes and Supercapacitors")the development of a new,
Chuanbao Cao and colleagues note that carbon is a key component in commercial Li-ion energy storage devices including batteries and supercapacitors.
and supercapacitors in a one-step method that could easily be scaled up, the researchers note h
A wide-range of technologies, including LEDS, diagnostic tools, and solar cells also rely on small molecules. mall molecules have had already a big impact on the world,
The beetle backpack is made up of a tiny, off-the-shelf microcontroller and a built-in wireless receiver and transmitter.
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011