| Crystal (584) |  |
| Crystal structure (53) | |
| Crystallography (69) | |
| Silica (101) | |
| Snowflake (8) | |
| Crystal (584) | |
| Crystal structure (53) | |
| Crystallography (69) | |
| Silica (101) | |
| Snowflake (8) | |
and a Raman gain in silica despite increasing loss. ight intensity is a very important parameter in optical systems
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;
Loss is delivered to one of the microresonators by a tiny device a chromium-coated silica nanotip
The researchers were able to stabilize the light s frequency by developing a silica glass chip resonator with a specially designed path for the photons in the shape of
##and manmade products constructed from similar materials has to do with the hierarchical architecture of the biological materialsâ##the way the silica-based skeletons are built up from different structural elements some
For the purposes of this experiment the researchers placed silica##manganese oxide eadson the matchstick material and introduced hydrogen peroxide as the chemical fuel in one particular place.
Products that use silica-based nanoparticles for biomedical uses such as various chips drug or gene delivery and tracking imaging ultrasound therapy and diagnostics may also pose an increased cardiovascular
and interaction of silica-based nanoparticles with biological systems write the researchers. Because our research demonstrates a clear cardiovascular health risk associated with this trend steps need to be taken to help ensure that potential health
researchers made extremely small perforations in a structure made of two thin films of silver separated by a film of silica.
Artists Discover 3-D Printingthe Missouri S&t team believes the mechanical coloring on the silver/silica materials provide a much higher printing resolution than conventional color printing, according to Gizmag.
but are rich in carbon rather than silica and may contain large layers of diamond. His team reported on models of such a world dubbed 55 Cancri e in October 2012.
A silica coating on the particles allows additional molecules to attach causing the particles to bind with specific structures within the cell.
Silica makes it completely flexible; it s a well developed material that can bind to almost anything Bawendi says.
Products that use silica-based nanoparticles for biomedical uses such as various chips drug or gene delivery and tracking imaging ultrasound therapy and diagnostics may also pose an increased cardiovascular
This reality leads to increased human exposure and interaction of silica-based nanoparticles with biological systems.
because it uses inert gold#silica SERS nanoparticles and a hand-held Raman scanner that can guide brain tumor resection in the operating room o
made of silica and nickel, is only 70 nm in diameter; the entire propeller is 400 nm long.
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,
"Silica-gold nanoparticles provide greater contrast, visibility To get around this, Mr Duczynski used silica nanoparticles coated with a gold shell (silica-gold core-shell nanoparticles) in his research."
"There are some theoretical and experimental papers where it was observed that by varying the dimensions of either the silica core
or gold shell you could also vary the scattering ratio of the particles, "he says."
"Ultraviolet spectroscopy was used on the silica-gold core-shell nanoparticles made by Mr Duczynski to better understand their optical properties, such as extinction, scattering and absorption.
I was having difficulty with shelling the silica particles, "Mr Duczynski says.""I was able to see some scattering of the iron oxide-gold core-shell nanoparticles,
The shirts are woven with a hydrophobic silica also known as silicon dioxide. Self Cleaning Clothing With Hydrophobic Nanotechnology as the Kickstarter says might be a vague enough claim to cause some concern
Once that coat dries (about 20 minutes) they apply an acetone solution with small amounts of silica and other proprietary additives.
Moreover, they are pioneers in the application of silica-based ordered mesoporous materials, as release systems of biologically active species, cell encapsulation in silica porous materials, mesoporous materials for gene therapy and transfection, organic-inorganic hybrid materials.
Using Envisiontec 3d bioplotter they were able to take their research to new levels creating very complex multilateral 3d structures following specific designs previously programmed on the computer. his is an incredible advantage
#Coated Silica Nanoparticles Could be used for Restorative Treatment of Sensitive Teeth Researchers at the University of Birmingham have shown how the development of coated silica nanoparticles could be used in restorative treatment of sensitive teeth
The study, published in the Journal of Dentistry, shows how sub-micron silica particles can be prepared to deliver important compounds into damaged teeth through tubules in the dentine.
However, the Birmingham team turned to sub-micron silica particles that had been prepared with a surface coating to reduce the chance of aggregation.
"These silica particles are available in a range of sizes, from nanometre to sub-micron,
In response to this problem the engineers developed a visibly transparent overlay more technically a silica photonic crystal overlay that increases solar cell efficiency by radiating the heat of cells away from them much like how we naturally radiate heat from our bodies to prevent overheating.
The overlay itself was made from patterned silica, fashioned into a thin, transparent material. This design means that the overlay can be laid on top of an unaltered solar cell this is important
The critical feature of the silica overlay is found in its micron-scale pattern, which is designed to maximise the radiating of heat, in the form of infrared light, out and away from the cell into space.
amples from left to right are the solar absorber structure with the planar silica layer on top, the absorber structure with verlayon top,
In this regard they point toward employing nanoprint lithography a common technique for producing nanometer scale patterns in larger quantities to produce silica overlays.
Quartz crystals are typically found in magmas that have a high percentage of silica. This type of magma is very viscous
like the low-silica basalts commonly erupted from Hawaiian volcanoes.''VOLCANO'S GLOBAL DEVASTATION A volcanic eruption of a similar size to Laki eruption that hit Iceland in 1783 could have global impacts according to the new report.
Furthermore, the wavelength range of these fibers is restricted to the transparency of silica. The release stories for this laser mention that the infrared wavelengths used here are safer for the eye than either visible or UV radiation.
"This produces a surface consisting of a porous three-dimensional network of high-silica content glass that resembles microscopic coral."
patterned silica material laid on top of a traditional solar cell. The material is transparent to the visible sunlight that powers solar cells,
In the journal, ACS Nano("Protease-Mediated Release of Chemotherapeutics from Mesoporous Silica Nanoparticles to ex Vivo Human and Mouse Lung Tumors"),the scientists reported that this approach led to a significant increase
They sprayed a fine dusting of silica nanoparticles onto the stainless steel mesh to create a randomly bumpy surface
The silica surfactant, polymer, and stainless steel are all nontoxic and relatively inexpensive, said Brown. He estimated that a larger mesh net could be created for less than a dollar per square foot.
The researchers chose silica in part because it is an ingredient in glass, and they wanted to explore this technology's potential for creating smudge-free glass coatings.
Rather than silica, he experiments with molybdenum disulfide nanotubes, which mix well with oil. The nanotubes are approximately a thousand times smaller than a human hair.
They stored the DNA in silica spheres to protect it, and then warmed it to 160 degrees Fahrenheit for a weekhe equivalent of keeping it at 50 degrees for 2, 000 years.
#Tiny silica particles could be used to repair damaged teeth, research shows Researchers at the University of Birmingham have shown how the development of coated silica nanoparticles could be used in restorative treatment of sensitive teeth
and preventing the onset of tooth decay. The study, published in the Journal of Dentistry, shows how sub-micron silica particles can be prepared to deliver important compounds into damaged teeth through tubules in the dentine.
The tiny particles can be bound to compounds ranging from calcium tooth building materials to antimicrobials that prevent infection.
However, the Birmingham team turned to sub-micron silica particles that had been prepared with a surface coating to reduce the chance of aggregation.
"These silica particles are available in a range of sizes, from nanometre to sub-micron,
patterned silica material laid on top of a traditional solar cell. The material is transparent to the visible sunlight that powers solar cells,
Hybrid Silica Changing Sol-Gel Supercapacitors A new material made from a common fatty acid, octylphosphonic acid,
and his collaborators systematically evaluated the size-dependent biological profiles of three monodisperse drug-silica nanoconjugates at 20 50 and 200 nm.
which interact with each other within the silica fiber optic cables. The researchers note that this approach could be used in systems with far more communication channels.
Reeds naturally absorb silica from the soil, which accumulates in sheetlike structures around micro-compartments in the plants.
At the heart of the new technology is a piece of nano-engineered silica glass with ions that fluoresce in infrared light when a low power laser light hits them.
At the heart of the new technology is a piece of nano-engineered silica glass with ions that fluoresce in infrared light when a low power laser light hits them.
and microstructured fibre geometries) in silica and other host glass materials,"says Professor Sahu.""Our proposed process can be utilised to produce complex preforms,
"We hope our work will open up a route to manufacture novel fibre structures in silica and other glasses for a wide range of applications, covering telecommunications, sensing, lab-in-a-fibre, metamaterial fibre,
The researchersprinting surface consists of a sandwich-like structure made up of two thin films of silver separated by a pacerfilm of silica.
Between the top and bottom films lies a 45-nanometer silica dielectric spacer. The researchers created a scaled-down template of the athletic logo and drilled out tiny perforations on the top layer of the metamaterial structure.
and a dielectric layer of silica or alumina. The dielectric separates the mirror with tiny metal nanoparticles randomly spaced at the top of the substrate. t acts similar to a skeleton key.
the UCLA and City of Hope researchers attached sirna to the outside of a particular type of nanoparticle developed by Zink called mesoporous silica nanoparticles.
Zink said the advance would be possible because of the structure of the specific type of nanoparticles the researchers are using. esoporous silica nanoparticles contain thousands of pores
who also is distinguished a UCLA professor of chemistry and biochemistry and a pioneer in the design and synthesis of multifunctional mesoporous silica nanoparticles u
As a living plant, reeds absorb silica from soil, and the silica accumulates around cellulose microcompartments.
Therefore, reeds are suitable natural reservoirs of nano-structured silica and its derivatives. Yet they are not only appropriate Si sources,
they also contain silica in a very favorable nanoscale arrangement. reed leaves exhibit well-defined sheetlike 3d hierarchical micro-structures,
which as we demonstrate can be transformed into a well-suited 3d highly porous hierarchical Si architectures. he topological architecture of the original silicates within the reed leaves is preserved extraordinarily well during the applied chemical and physical treatment steps.
microminiature perforations are made in a multilayered structure consisting of two thin films of silver separated by a film of silica 45 nanometers thick.
As the sandwiched silver/silica material acts as a plasmonic device, the Missouri S&t team believes that mechanical color printing on such materials provides a much higher printing resolution than conventional color printing.
and had no toxic effects on living cells in the lab. The team also discovered that mixing the gel with silica nanoparticles gave it the ability to more effectively prevent bleeding,
and encased in a sphere of silica and a polymer. The researchers'method of making the stars ensures that all of the particles are nearly identical
and is particularly difficult for young children that don understand the purpose of it All the new technology relies on a special silica glass that has ions throughout that fluoresce in infrared in response to laser light.
In this research, printing graphite electrode modified with silica and gold nanoparticles was used as an appropriate bed for the production of biosensors to detect four-strand structure of DNA
Winner of the 2015 Lindros Award for translational medicine, Kjeld Janssen is pushing the boundaries of the emerging lab-on-a-chip technology The postage stamp-sized square of fused silica Kjeld Janssen is holding
The new material is composed of a silica sol-gel thin film containing polar groups linked to the silicon atoms and a nanoscale self-assembled monolayer of an octylphosphonic acid,
"Our silica sol-gel is a hybrid material because it has polar organic groups attached to the silica framework that gives the sol-gel a high dielectric constant,
and in our bilayer dielectric, the n-octylphosphonic acid groups are inserted between the sol-gel layer
and a dielectric layer of silica or alumina. The dielectric separates the mirror with tiny metal nanoparticles randomly spaced at the top of the substrate.
and a dielectric layer of silica or alumina. The dielectric separates the mirror with tiny metal nanoparticles randomly spaced at the top of the substrate."
and Yeon Sik Jung of the Department of Materials science and engineering at KAIST has developed the first flexible PRAM enabled by self-assembled block copolymer (BCP) silica nanostructures with an ultralow current operation (below one quarter
BCP silica nanostructures successfully lowered the contact area by localizing the volume change of phase-change materials
"Low-power nonvolatile PRAM for flexible and wearable memories enabled by (a) self-assembled BCP silica nanostructures and (b) self-structured conductive filament nanoheater.
The researchers took a thin film of silica deposited on a platinum foil which, when heated, reacts to create a layer of platinum silicide.
or silica creating a thin liquid layer that smooths out nanoscale'valleys'in the platinum
which interact with each other within the silica fiber optic cables. The researchers note that this approach could be used in systems with far more communication channels.
Individual germanium quantum dots were coated with silicon dioxide (silica), doped to make them p-type, and then deposited, using Natcore's liquid phase deposition (LPD) process,
The sensor uses a nanoengineered silica chip with an active layer of ions that fluoresce
Researchers found a few all-silica zeolites with superior performance that contain pores and channels with the ability to accommodate ethanol molecules
Arrayarraythe researchers'printing surface consists of a sandwich-like structure made up of two thin films of silver separated by a"spacer"film of silica.
Between the top and bottom films lies a 45-nanometer silica dielectric spacer. The researchers created a scaled-down template of the athletic logo and drilled out tiny perforations on the top layer of the metamaterial structure.
"At the heart of the new technology is a piece of nano-engineered silica glass with ions that fluoresce in infrared light when a low power laser light hits them.
which interact with each other within the silica fiber optic cables. The researchers note that this approach could be used in systems with far more communication channels.
The researchers found that it was possible to combine the gel with silica nanoparticles microscopic particles previously found to stop bleeding to develop an even more powerful barrier to promote wound healing. his could allow us to immediately stop bleeding with one treatment
#Miniature Technology, Large-scale Impact The postage stamp-sized square of fused silica Kjeld Janssen is holding may not look like a whole lot to the untrained eye,
when placed around a central silica bead. Each etalis a ocal conic domain a structure that can be used as a simple lens. ur first question was
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