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#Nanotechnology #Food #Food Packaging #Nanomaterials #Antibacterial

Image retrieved from: https://www.cnet.com/news/the-best-sensors-could-...Silly putty is special material because of its elasticity and liquid properties. It is lightly cross-linked silicone polymer that can bounce, break and flow. Trinity College Dublin researchers working with the National Graphene Institute at the Manchester University have combined graphene with Silly Putty, polysilicon toy, to create very sensitive slectrochemical sensors. By the new sensors, they serve several properties such as electrical conductivity, sensitive to deformation and impact, inexpensive, applicable in healthcare and other sectors. When the mix of graphene and Silly Putty was placed onto human chest and neck, the G-Putty could monitor breathing, pulse and blood pressure. This was due to addition of graphene resulting electrical conductance in silly putty toys. Electrical conductivity of the composite material is very sensitive to deformation being hundreds of times more sensitive than current sensors resulting from slightest impact or strain. Graphene mixed putty was also tested successfully for detection of small spiders’ footsteps. Therefore, it was believed that this kind of material will be applied in many medical devices or others when the very sensitive impact sensors are needed. Following video shows how the graphene-silly putty sensor measures pulse: For more information: http://www.nature.com/news/graphene-spiked-silly-putty-picks-up-human-pulse-1.21133

#nanotechnology

A Silicon Carbide Lollipop

Image retrieved from: http://www.materialstoday.com/carbon/articles/s1369702115000218/

Silicon Carbide is an inorganic material and non-oxide ceramics. Many of researches have been performed and continue for Silicon Carbide ceramic material due to having a range of properties for the advanced technological applications. Besides of chemical stability, thermal stability and thermal shock resistance of Silicon Carbide, mechanical properties such as hardness and wear resistance are excellent for many engineering purposes like filter and catalyst supports for elevated temperatures, seal pumps for automotive water pumps, heat exchangers, bearing and abrasion resistant components or composite materials in armor protection. Silicon Carbide usage in medicine is also important due to biocompatibility feature of Silicon Carbide. Therefore, Silicon Carbide has already been used in myocardial heart probes, bone prosthetics and coronary heart stents.

Most of these applications, light weight, stiff and strong porous structure of Silicon Carbide are needed. One way to obtain light weight material is producing porous regions in the lattice which may lead to decrease in mechanical properties of products. A group of researchers in the Center for Advanced Structural Ceramics of United Kingdom studied two different processes based on water suspension and sintering techniques to obtain ultra-light SiC. They built strong, light weight SiC porous structure like as lollipop seen in SEM image. They said that Silicon Carbide with highly porous scaffolds can be used in thermal management, filter and catalyst supports designed to work at elevated temperatures or as ceramic reinforcement in the production of composites.

For further information: http://www.sciencedirect.com/science/article/pii/S1369702115000218

Related Products in Our Website: http://nanografi.com/nanoparticles/sic-silicon-carbide-beta-99-5-d50-1-5-35um/

#nanotechnology #silicon carbide powder #nanocomposite

No friction with the help of GRAPHENE!

http://nanografi.com/blog/no-friction-with-the-help-of-graphene/

It was known that diamonds are already one of the hardest natural substances. But if diamoınd combine with graphene, nanoparticles can be slippery and it can be useful if you want to reduce friction in a moving machine. Scientist showed that the combination of tiny bits of diamond and graphene that had superlubricity. This means that the friction between them and another object dropped to near zero.

Reducing friction, or making things more slippery could have benefits beyond just making it easier for objects to move around. For example "nearly one-third of a vehicle's fuel energy is spent on overcoming engine, transmission, and tire friction." Reduce the friction, reduce the amount of fuel used.

Diamond nanoparticles contact with the thin sheets of graphene and the graphene rolled up around the diamond nanoparticles, creating scroll or ball like structures. This specific structure makes the superlubricity possible right now, but researchers hope that they can expand the property to other materials in the future.

Scientist stated that the knowledge gained from this study will be important in finding ways to reduce friction in everything from engines or turbines to computer hard disks and microelectromechanical systems.

#nanotechnology #diamond #graphene #friction #technology

“What Is Silver Nanoparticle and Why Is It Important? ”

Silver is one of the most popular material in last decade. Silver nanoparticles have been hitting the headlines for a few years now, both as a smart new technology for preventing bacterial infection, and as a potential new health and environmental threat.

part from antibacterial properties,there are several application area of silver nanoparticles since silver has remarkable characteristics.Silver nanoparticles are nanoparticles of silver of between 1 nm and 100 nm in size.Silver nanoparticles have unique optical, electrical, and thermal propertiesand are being incorporated into products that range from photovoltaics to biological and chemical sensors. The unique properties of silver nanoparticles make them ideal for numerous technologies, including biomedical, materials, optical, and antimicrobial applications, as well as for use in nanotoxicology studies. Silver nanoparticles some spicific properties such as;

- high electrical conductivity,

- high stability,

- low sintering temperatures.

Also thanks to these unique properties of silver nanoparticles, it can be utilized in several fields such as molecular diagnostics and photonic devices, which take advantage of the novel optical properties of these nanomaterials. Moreover, silver nanoparticles commonly used in antimicrobial coatings, textiles, diagnostic, wound dressings,optics and biomedical devices now contain silver nanoparticles that continuously release a low level of silver ions to provide protection against bacteria.

http://nanografi.com/blog/what-is-silver-nanoparticle-and-why-is-it-important-/

#Photo retrieved from http://www.boliden.com/fi/Press/Press-images/Products/Silver/

Diamond Nanothreads

DNT were synthesized by aligning benzene molecules and putting them under pressure which results in the polymerization of the molecules and the formation of the threads. The investigation of the properties of DNT had showed promising potential in daily and future applications. The simulation studies suggest that DNT can be ideal for the formation of extremely strong three dimensional nano-architectures. Further research are done to investigate their properties and finding ways of synthesis and applications. Nanomaterials with their unique properties have opened a door into many discoveries and improvements which brought many solutions for different issues facing humanity. Metallic nanoparticles and carbon nanomaterials such as carbon nanotubes and graphene are among the most important nanomaterials that are known today. Yet, the discovery of new nanomaterials with extraordinary properties is in a continuous competition. Recently, a team of scientists at Pennsylvania State University discovered new super material that is made out of carbon. They named it Diamond Nanothreads (DNT) because of its one-dimensional diamond crystal structure with hydrogen at its caps.

http://nanografi.com/blog/diamond-nanothreads/

#diamond #nanotechnology #Nanomaterials #technology #nanoparticles

“Slice” or “Substrate”, in other words WAFER!

A wafer, also called a slice or substrate. It is actually a thin piece of semiconductor material, such as a crystalline silicon. It is mostly used in electronics for the fabrication of integrated circuits and in photovoltaics for conventional, wafer-based solar cells. The wafer serves as the substrate for microelectronic devices. Today silicon chips are everywhere. Some microfabrication process step like doping or ion implantation, etching, deposition of various materials, and photolithographic patterning are applied. . Finally the individual microcircuits are separated (dicing) and packaged.

Wafers are formed of highly pure (99.9999999% purity), nearly defect-free single crystalline material. Ultrabook devices, smartphones, tablets, high performance computing, data centers included this material. Engineers automate factories and are embedded in automobiles and everyday devices. The most sophisticated processor can contain hundreds of millions or billions of transistors interconnected by fine wires made of copper. Each of these transistors acts as an on/off switch, controlling the flow of electricity through the chip to send, receive, and process information. Wafers today may have multiple cores.

http://nanografi.com/blog/slice-or-substrate-in-other-words-wafer/

#silicon wafer #nanotechnology

Carbon Nanotube Threads

Since its discovery, carbon nanotube (CNT) has attracted many interests in different technology fields due to its extraordinary properties. Properties such as, high strength, great electrical and thermal conductivity, light weight and flexibility made CNT one of the best materials for wide range of applications. However, from its name it can be understood that CNT is a nanoscale material which is very small to be applied for the production of daily products. Researchers all around the world are working on finding methods and techniques which could produce new materials with the extraordinary properties of CNT.

One of these research is focusing on the production of high strength threads that can be used in the manufacturing of fabrics, cables and ropes. An international group of scientists were able to produce a flexible conductive thread that is a quarter of the thickness of human hair. The produced threads are ten times the tensile strength of steel yet are highly flexible with high electrical and thermal conductivity. The technique followed in the study was based on the spinning out of the CNT fibers from chlorosulfonic acid solution.

#http://nanografi.com/blog/carbon-nanotube-threads/

Carbon Nanotube is only way to turn your big dream into reality!

For the last decade, engineers and scientists have tried to use the unique properties of carbon nanotubes to create high-performance electronics devices that are faster or energetically more efficient. That means longer battery life and higher speed of electronic devices such as laptops, smartphones.

Until now, silicon and gallium arsenide used in computer chips and personal electronics. Engineers from University of Wisconsin-Madison material science achieved current that's 1.9 times higher than silicon transistors.

Michael Arnold who is head of this research team, said that "This achievement has been a dream of nanotechnology for the last 20 years,". Also he claimed that carbon nanotube transistors that are better than silicon transistors is a big milestone.

As to extrapolations from single nanotube measurements, carbon nanotube transistors should be able to perform five times faster or use five times less energy than silicon transistors. Thanks to carbon nanotube's ultra-small dimension, it is possible to rapidly change a current signal traveling across it. This process is very important for wireless communications devices.

http://nanografi.com/blog/carbon-nanotube-is-only-way-to-turn-your-big-dream-into-reality/

http://nanografi.com/search.php?search_query=carbon+nanotube

References:

· https://www.sciencedaily.com/releases/2016/09/160902152049.htm

New trend material for food packaging = Nanoclay!

Food packaging plays a vital role in preserving food throughout the distribution chain. A package provides protection, resistance, and special physical, chemical, or biological needs. In recent years, the development of novel food packaging (modified atmosphere & active packaging) has increased the shelf life of foods. Moreover, their safety and quality has increased parallely.

Nanotechnology offers several advantages to food packaging industry. For example, barrier resistance, functional performance increase with nanotechnology.

A recent trend is to use nanocomposites materials for food-packaging applications. Nanoclay is one the most popular material used in food packaging industry. Small plate-shaped particles of clay, 1nm thick and 1,000nm in diameter. These tiny partciles are embedded into the plastics normally used for packaging, such as polypropylene and polyethylene.

· It provides longer shelf life

· It improves high temperature performance

· It provides flexible packaging

· It provides several functionalty such as anti-temper, ant-microbial, self-repair sensor

· It provides good gas barrier, oxygen barrier, films

Nanotech packaging is not currently used in the most part of the Europe, but is used in the America and other parts of the world. This type of packaging could be particularly useful and advantageous in the developing world, where food spoilage is a major issue.

http://nanografi.com/blog/new-trend-material-for-food-packaging-nanoclay/

#nanotechnology #nanoclay #nanoparticles #food packaging

DANCING BLACK SPHERES!

Nanotechnology takes attention in the recent past. There are several applications of nanoparticles have entered into a variety of fields such as electronics, optic, cosmetics, medicine and biotechnology.

Zirconium is one the most popular nanoparticle.It is a very strong, malleable, ductile, lustrous silver-gray metal. Its chemical and physical properties are similar to those of titanium.

Also, zirconium is extremely resistant to heat and corrosion. Moreover, zirconium is lighter than steel and its hardness is similar to copper. Zirconium powder is black and is regarded as very dangerous fire hazard. Zirconium does not dissolve in acids and alkalis. Zirconium (atomic symbol: Zr, atomic number: 40) is a Block D, Group 4, Period 5 element with an atomic weight of 91.224. Zirconium silicate is the principal mineral of elemental zirconium. Zirconium is commercially produced as a byproduct of titanium and tin mining and has many applications as a opacifier and a refractory material. It is not found in nature as a free element.

Applications:

Main application field of zirconium oxide nanoparticles are listed below:

In ceramics industry in order to make ceramic pigments, porce lain glaze, etc.

In artificial jewellery industry.

In making abrasive, insulating and fire-retarding materials.

In optical storage, light shutters and stereo television glasses.

http://nanografi.com/blog/dancing-black-spheres/

http://nanografi.com/nanoparticles/zr-zirconium-99-5-80-um-metal-basis/

#titanium #steel #zirconium #nanotechnology #nanoparticles

The importance of Cerium Rare Earth Element

*Cerium the second element in the Lanthanide series. This rare earth element is the most abundantly prevalent rare earth element.

*Cerium element was named for the asteroid Ceres, this rare earth metal was discovered in 1801. Cerium rare earth element is discovered in 1803 by Klaproth and by Berzelius and Hisinger. *Cerium rare earth element is found some minerals including allanite,monazite, bastnasite, cerite, and samarskite. Today, monazite and bastnasite are more important sources of cerium rare earth element. In addition cerium metal is more abundant than Lead metal in earth’s crust. *Cerium rare earth metal is considered to be moderately toxic. And Cerium fire produce a harmful gas if pour water on it. *The metal tarnishes in moist air and reacts with water to form cerium hydroxide plus hydrogen gas. Small particles of the metal may ignite if a knife scratches the pure metal surface. *When cerium-lanthanum alloy uses with a sum of neodymium and praseodymium rare earth metal combined with Fe2O3 and MgO is used as the filint in cigarette and gas lighters. That is, it is used to include flints for cigarette lighters

http://nanografi.com/blog/the-importance-of-cerium-rare-earth-element/

#cerium nanopowder #cerium rare elements #nanotechnology #cerium mesh powder #cerium micron powder

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