| Digital electronics (1) |  |
| Microelectronics (22) | |
| Optoelectronics (12) | |
| Semiconductors (112) | |
| Digital electronics (1) | |
| Microelectronics (22) | |
| Optoelectronics (12) | |
| Semiconductors (112) | |
says John Olaherty, the technical director of Ireland Limerick-based National Microelectronics Applications Centre (MAC),
But until now it hasn t been clear that CNTS a semiconductor material could fulfill those expectations. here is no question that this will get the attention of researchers in the semiconductor community
and its cousins. uch concerns arise from the demands that designers place upon semiconductors and their fundamental workhorse unit those on-off switches known as transistors.
Depending on how the CNTS grow a fraction of these carbon nanotubes can end up behaving like metallic wires that always conduct electricity instead of acting like semiconductors that can be switched off.
Then they pumped the semiconductor circuit full of electricity. All of that electricity concentrated in the metallic nanotubes
Though it could take years to mature the Stanford approach points toward the possibility of industrial-scale production of carbon nanotube semiconductors according to Naresh Shanbhag a professor at the University of Illinois at Urbana-Champaign
The breakthrough is in the new system's ability to bind titanium dioxide (Tio2) a photocatalyst that reacts under ultraviolet light.
Hong and his colleagues used a technique that is well known in the semiconductor industry chemical vapour deposition.
"Hong thinks that graphene's most promising application will be to replace the silicon-based materials used in semiconductor technologies.
The prototype chip was manufactured through the Taiwan Semiconductor Manufacturing Company's University Shuttle Program. Ups and downs The circuit chief function is to regulate the voltages between the solar cell, the battery,
The researchers took a page from the paper industry using one of its processes to make a flat mesh out of light-absorbing semiconductor nanowires that
Plasma processing is a very critical technology in modern optoelectronic materials and devices Fan explained.
The high-energy plasma can deposit highly transparent and conductive thin films create high quality semiconductors and pattern micro-or nanoscale devices thus making the display images brighter and clearer.
#Scientists grow a new challenger to graphene A team of researchers from the University of Southampton's Optoelectronics Research Centre (ORC) has developed a new way to fabricate a potential challenger to graphene.
and related materials rather than just microscopic flakes as previously was the case greatly expands their promise for nanoelectronic and optoelectronic applications.
and hydrogen by combining these proteins with titanium dioxide and platinum and then exposing them to ultraviolet light.
titanium dioxide only reacts in the presence of ultraviolet light, which makes up a mere four percent of the total solar spectrum.
and connect with the titanium dioxide catalyst: in short, a material like graphene. Graphene is a super strong, super light, near totally transparent sheet of carbon atoms and one of the best conductors of electricity ever discovered.
Electrons from this reaction are transmitted to the titanium dioxide on which these two materials are anchored, making the titanium dioxide sensitive to visible light.
Simultaneously, light from the green end of the solar spectrum triggers the br protein to begin pumping protons along its membrane.
which sit on top of the titanium dioxide. Hydrogen is produced by the interaction of the protons and electrons as they converge on the platinum.
#Team develops ultra sensitive biosensor from molybdenite semiconductor Move over graphene. An atomically thin two-dimensional ultrasensitive semiconductor material for biosensing developed by researchers at UC Santa barbara promises to push the boundaries of biosensing technology in many fields from health care to environmental protection to forensic industries.
Based on molybdenum disulfide or molybdenite (Mos2) the biosensor materialsed commonly as a dry lubricanturpasses graphene's already high sensitivity offers better scalability
Semiconductor materials have a small but nonzero band gap and can be switched between conductive and insulated states controllably.
In digital electronics these transistors control the flow of electricity throughout an integrated circuit and allow for amplification and switching.
Enter Mos2 a material already making waves in the semiconductor world for the similarities it shares with graphene including its atomically thin hexagonal structure and planar nature as well as
act like a semiconductor. Monolayer or few-layer Mos2 have a key advantage over graphene for designing an FET biosensor:
At present the scientific community worldwide is actively seeking practical applications of 2d semiconductor materials such as Mos2 nanosheets.
#Scientists craft atomically seamless thinnest-possible semiconductor junctions Scientists have developed what they believe is the thinnest-possible semiconductor,
a new class of nanoscale materials made in sheets only three atoms thick. The University of Washington researchers have demonstrated that two of these single-layer semiconductor materials can be connected in an atomically seamless fashion known as a heterojunction.
This result could be the basis for next-generation flexible and transparent computing, better light-emitting diodes,
The researchers discovered that two flat semiconductor materials can be connected edge-to-edge with crystalline perfection.
which was key to creating the composite two-dimensional semiconductor. Collaborators from the electron microscopy center at the University of Warwick in England found that all the atoms in both materials formed a single honeycomb lattice structure, without any distortions or discontinuities.
thinnest-possible semiconductor junctions A high-resolution scanning transmission electron microscopy (STEM) image shows the lattice structure of the heterojunctions in atomic precision.
"Scientists craft atomically seamless, thinnest-possible semiconductor junctions With a larger furnace, it would be possible to mass-produce sheets of these semiconductor heterostructures,
the researchers said. On a small scale, it takes about five minutes to grow the crystals, with up to two hours of heating and cooling time."
and whether they acted as metals semiconductors or insulators under strain. Toggling between or sustaining those conductive properties are particularly important for future applications in microelectronics.
Testing all the different atomic configurations for each material under strain boils down to a tremendous amount of computation Isaacs said.
Nanowires are extremely fast, efficient semiconductors, but to be useful for electronics applications, they need to be packed together in dense arrays.
researchers from the Pohang University of Science and Technology detail how they were able to turn black phosphorus into a superior conductor that can be mass produced for electronic and optoelectronics devices.
This research outcome potentially allows for great flexibility in the design and optimization of electronic and optoelectronic devices like solar panels and telecommunication lasers.
the semiconductor potential can be realized because the conductivity can be shut off, even at low temperatures. This obviously dilutes its appeal as a semiconductor,
as shutting off conductivity is a vital part of a semiconductor function. Birth of a Revolutionphosphorus is the fifteenth element in the periodic table
and lends its name to an entire class of compounds. Indeed it could be considered an archetype of chemistry itself.
Like graphene, BP is a semiconductor and also cheap to mass produce. The one big difference between the two is BP natural band gap
a unique state of matter that is different from conventional semiconductors. he potential for this new improved form of black phosphorus is beyond anything the Korean team hoped for,
and the study principal investigator. ut this new technology is very similar to the one used to print semiconductor chips onto silicon wafers,
Semiconductor lasers typically emit into elliptical beams that are really hard to work with and the new metasurface optical components could replace expensive optical systems used to circularize the beams.
The nanoparticle hydrophilic layer essentially locks in the active ingredient, a hydrophobic chemical called padimate O. Some sunscreen solutions that use larger particles of inorganic compounds, such as titanium dioxide or zinc oxide,
The scientists and engineers detailed their findings in the 1 oct. issue of the journal Nature. his transistor represents a major breakthrough in the electronics and semiconductor industry
Until now, the only experimental TFET to meet the International Technology Roadmap for Semiconductors (ITRS) goal of average subthreshold swing below 60 millivolts per decade over four decades of current was a transistor that used nanowires.
But that type is often challenging to fabricate using conventional semiconductor manufacturing techniques. This new TFET not only meets the ITRS goal
as well as highly efficient photovoltaic cells (known as gallium arsenide photovoltaic cells) to convert that concentrated solar energy into electricity. Though concentrated solar thermal power
Its gallium arsenide photovoltaic cells though more efficient than standard PV cells, are not cheap. Add up construction costs and the costs of the fancy cooling system,
allowing for the application to be produced mass for electronic and optoelectronics devices. The research team operating out of Pohang University of Science and Technology (POSTECH),
This research outcome potentially allows for great flexibility in the design and optimization of electronic and optoelectronic devices like solar panels and telecommunication lasers.
the semiconductor potential can be realized because the conductivity can be shut off, even at low temperatures. This obviously dilutes its appeal as a semiconductor,
as shutting off conductivity is a vital part of a semiconductor function. Birth of a Revolutionphosphorus is the fifteenth element in the periodic table
and lends its name to an entire class of compounds. Indeed it could be considered an archetype of chemistry itself.
Like graphene, BP is a semiconductor and also cheap to mass produce. The one big difference between the two is BP natural band gap
a unique state of matter that is different from conventional semiconductors. he potential for this new improved form of black phosphorus is beyond anything the Korean team hoped for,
A new generation of organic semiconductors may allow these kinds of flexible electronics to be manufactured at low cost,
what they are calling"an electron superhighway"in one of these materials--a low-cost blue dye called phthalocyanine--that promises to allow electrons to flow faster and farther in organic semiconductors.
Increasing the distance these excitons can diffuse--before they reach a juncture where they're broken apart to produce electrical current--is essential to improving the efficiency of organic semiconductors.
and Naveen Rawat G'15--opens a window to view how increasing"long-range order"in the organic semiconductor films is a key mechanism that allows excitons to migrate farther."
2015efforts to Improve Properties of Body Implants Using Nanocoatings Yield Positive Results September 28th, 2015a different type of 2-D semiconductor:
2015efforts to Improve Properties of Body Implants Using Nanocoatings Yield Positive Results September 28th, 2015a different type of 2-D semiconductor:
2015efforts to Improve Properties of Body Implants Using Nanocoatings Yield Positive Results September 28th, 2015simulation of chiral edge states in a quantum system September 26th, 2015a different type of 2-D semiconductor:
#'Parachuting'boron on benzene rings (Nanowerk News) Tuning the para position of benzene moieties is significant for creating biologically active compounds and optoelectronic materials.
as well as optoelectronic materials. Nonetheless, few reports have existed in obtaining para-selective benzene derivatives directly from mono-substituted benzene rings.
When moving electrons encounter a potential barrier in conventional semiconductors it takes an increase in energy for the electron to continue flowing.
This research outcome potentially allows for great flexibility in the design and optimization of electronic and optoelectronic devices like solar panels and telecommunication lasers.
This research outcome potentially allows for great flexibility in the design and optimization of electronic and optoelectronic devices like solar panels and telecommunication lasers.
the semiconductor potential can't be realized because the conductivity can't be shut off, even at low temperatures.
This obviously dilutes its appeal as a semiconductor, as shutting off conductivity is a vital part of a semiconductor's function.
Phosphorene Birth of a Revolution Phosphorus is the fifteenth element in the periodic table and lends its name to an entire class of compounds.
Like graphene, BP is a semiconductor and also cheap to mass produce. The one big difference between the two is BP's natural band gap
therefore we tuned BP's band gap to resemble the natural state of graphene, a unique state of matter that is different from conventional semiconductors."
"But this new technology is very similar to the one used to print semiconductor chips onto silicon wafers,
The nanoparticles hydrophilic layer essentially locks in the active ingredient, a hydrophobic chemical called padimate O. Some sunscreen solutions that use larger particles of inorganic compounds, such as titanium dioxide or zinc oxide,
scientists eventually hope to make very fast transistors, semiconductors, sensors and transparent electrodes using graphene.""This is an amazing material,
According to financial reports, the global market for graphene reached $9 million in 2014 with most sales in the semiconductor, electronics, battery, energy,
scientists eventually hope to make very fast transistors, semiconductors, sensors and transparent electrodes using graphene.""This is an amazing material,
According to financial reports, the global market for graphene reached $9 million in 2014 with most sales in the semiconductor, electronics, battery, energy,
and the study principal investigator. ut this new technology is very similar to the one used to print semiconductor chips onto silicon wafers,
Semiconductor lasers typically emit into elliptical beams that are really hard to work with and the new metasurface optical components could replace expensive optical systems used to circularize the beams.
#Gallium nitride and Sol-Gel Transistors to Change Electronics and Energy consumption August 5, 2015-Graphene is seen as a material that is altering our technical world.
One is gallium nitride (Gan), and the other is sol-gel. The Gallium nitride Energy revolution is About to Happencambridge Electronics, Inc. CEI),
whose motto is"Dream it. We'll power it, "is a Massachusetts company on a mission to reduce energy consumption
Through a new semiconductor material, gallium nitride (Gan. Already being used in LED light bulbs, television and computer displays,
One is gallium nitride (Gan), and the other is sol-gel. August 4 2015-Yesterday the President of the United states released the revised Clean Power Plan with a focus on fossil-fuel burning power plants.
The prototype chip was manufactured through the Taiwan Semiconductor Manufacturing Company University Shuttle Program. Ups and downs The circuit chief function is to regulate the voltages between the solar cell, the battery,
at very limited input power levels 10 nanowatts to 1 microwatt for the Internet of things. he prototype chip was manufactured through the Taiwan Semiconductor Manufacturing Company's University Shuttle Program.
The research, ield-Portable Smartphone Microscopy Platform for Wide-field Imaging and Sizing of Single DNA Molecules, was presented at the Optical Society Conference on Laser and Electro optics (CLEO) 2015 h
The research has been published in the journal Microsystems & Nanoengineering, in an article headed"3d-printed microelectronics for integrated circuitry and passive wireless sensors. e
#Researchers develop a semiconductor chip made almost entirely of wood Portable electronics-typically made of nonrenewable,
a semiconductor chip made almost entirely of wood. The research team, led by UW-Madison electrical
The majority of today's wireless devices use gallium arsenide-based microwave chips due to their superior high-frequency operation and power handling capabilities.
However, gallium arsenide can be environmentally toxic, particularly in the massive quantities of discarded wireless electronics.
"I've made 1, 500 gallium arsenide transistors in a 5-by-6 millimeter chip. Typically for a microwave chip that size,
"Mass-producing current semiconductor chips is so cheap, and it may take time for the industry to adapt to our design,
#An easy, scalable and direct method for synthesizing graphene in silicon microelectronics: Korean researchers grow 4-inch diameter, high-quality, multi-layer graphene on desired silicon substrates,
an important step for harnessing graphene in commercial silicon microelectronics Abstract: In the last decade, graphene has been studied intensively for its unique optical, mechanical, electrical and structural properties.
but most graphene fabrication methods are not compatible with silicon microelectronics, thus blocking graphene's leap from potential wonder material to actual profit-maker.
and microelectronics-compatible method to grow graphene and have synthesized successfully wafer-scale (four inches in diameter), high-quality, multi-layer graphene on silicon substrates.
which ions are accelerated under an electrical field and smashed into a semiconductor. The impacting ions change the physical, chemical or electrical properties of the semiconductor.
In a paper published this week in the journal Applied Physics Letters, from AIP Publishing,
which takes graphene a step closer to commercial applications in silicon microelectronics.""For integrating graphene into advanced silicon microelectronics, large-area graphene free of wrinkles, tears and residues must be deposited on silicon wafers at low temperatures,
which cannot be achieved with conventional graphene synthesis techniques as they often require high temperatures, "said Jihyun Kim, the team leader and a professor in the Department of Chemical and Biological engineering at Korea University."
"In silicon microelectronics, graphene is a potential contact electrode and an interconnection material linking semiconductor devices to form the desired electrical circuits,
the method is suited not for silicon microelectronics, as chemical vapor deposition would require a high growth temperature above 1,
"Thus, we are motivated to develop a transfer-free method to directly synthesize high quality, multilayer graphene in silicon microelectronics."
a microelectronics-compatible technique normally used to introduce impurities into semiconductors. In the process, carbon ions were accelerated under an electrical field
The prototype chip was manufactured through the Taiwan Semiconductor Manufacturing Company's University Shuttle Program. Ups and downs The circuit chief function is to regulate the voltages between the solar cell, the battery,
#An easy, scalable and direct method for synthesizing graphene in silicon microelectronics (Nanowerk News) In the last decade,
but most graphene fabrication methods are not compatible with silicon microelectronics, thus blocking graphene's leap from potential wonder material to actual profit-maker.
and microelectronics-compatible method to grow graphene and have synthesized successfully wafer-scale (four inches in diameter), high-quality, multi-layer graphene on silicon substrates.
which ions are accelerated under an electrical field and smashed into a semiconductor. The impacting ions change the physical, chemical or electrical properties of the semiconductor.
In a paper published this week in the journal Applied Physics Letters("Wafer-scale synthesis of multi-layer graphene by high-temperature carbon ion implantation"),from AIP Publishing
which takes graphene a step closer to commercial applications in silicon microelectronics. Wafer-scale (4 inch in diameter) synthesis of multi-layer graphene using high-temperature carbon ion implantation on nickel/Sio2/silicon.
J. Kim/Korea University, Korea)" For integrating graphene into advanced silicon microelectronics, large-area graphene free of wrinkles, tears and residues must be deposited on silicon wafers at low temperatures,
"In silicon microelectronics, graphene is a potential contact electrode and an interconnection material linking semiconductor devices to form the desired electrical circuits,
the method is suited not for silicon microelectronics, as chemical vapor deposition would require a high growth temperature above 1,
"Thus, we are motivated to develop a transfer-free method to directly synthesize high quality, multilayer graphene in silicon microelectronics."
a microelectronics-compatible technique normally used to introduce impurities into semiconductors. In the process, carbon ions were accelerated under an electrical field
International team of scientists constructs first germanium-tin semiconductor laser for silicon chips The transfer of data between multiple cores as well as between logic elements and memory cells is regarded as a bottleneck in the fast-developing computer technology.
However in spite of intensive research a laser source that is compatible with the manufacturing of chips is not yet achievable according to the head of Semiconductor Nanoelectronics (PGI-9). The basis of chip manufacturing is silicon an element of main group IV of the periodic table.
Typical semiconductor lasers for telecommunication systems made of gallium arsenide for example however are costly and consist of elements from main groups III
In contrast semiconductors of main group IV--to which both silicon and germanium belong--can be integrated into the manufacturing process without any major difficulties.
They are classed among the indirect semiconductors. In contrast to direct semiconductors they emit mostly heat and only a little light when excited.
That is why research groups all over the globe are intensively pursuing the objective of manipulating the material properties of germanium
The scientists at Julich's Peter Grunberg Institute have succeeded now for the first time in creating a real direct main group IV semiconductor laser by combining germanium and tin
which are defined by gratings implemented into the semiconductor chip. Wavelength selection is realized by separately addressable sections within the laser.
which finally showed the biodegradable transistor has superior microwave-frequency operation capabilities comparable to existing semiconductor transistors."
a semiconductor chip made almost entirely of wood. A cellulose nanofibril (CNF) computer chip rests on a leaf.
The majority of today wireless devices use gallium arsenide-based microwave chips due to their superior high-frequency operation and power handling capabilities.
However, gallium arsenide can be environmentally toxic, particularly in the massive quantities of discarded wireless electronics.
500 gallium arsenide transistors in a 5-by-6 millimeter chip. Typically for a microwave chip that size,
Ma says the flexibility of the technology can lead to widespread adoption of these electronic chips. ass-producing current semiconductor chips is so cheap,
it could enable the semiconductor industry to achieve the ultimate in miniaturization, Dr Yi Du,
your next phone could be made of wood Engineers hunting for a way to make electronics more sustainable have hit on a novel invention-a semiconductor chip made almost entirely out of wood.
"Mass-producing current semiconductor chips is so cheap, and it may take time for the industry to adapt to our design.
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