In one of the incredible applications of graphene in the health industry, Scientists in the University of Manchester are developing ultra thin graphene condoms.  Though current condoms are almost excellent barriers of unwanted contaminants, they are heavy and thick — which is the reason they reduce sensation and probably why people do not like wearing them, no matter the risk.

Ultra Thin Graphene Condoms

The team of Scientists from the university has received a grant of £62,123 to work on the project from the Bill and Melinda Gates foundation.  This is through the foundation`s Grand Challenges exploration program which supports creative projects aimed at improving health of people in the developing world. According to Dr Aravin Vijayaraghavan who will lead the team of scientists researching condom, if the project succeeds we might have an everyday use which literally will touch everyday life in the most intimate way.

The team at Manchester is only one of the 11 teams that received grants from the foundation to work on the project.  In their call to the Scientists on March 2013, the foundation sees the project`s success as what is going to be the next generation condom that enhances and significantly preserves pleasure.  In their proposal the condoms to be developed, must at least work well just like the existing condoms.

Graphene is a wondrous material with properties that make it the most studied material. It is the strongest, the best conductor, the thinnest, and to crown the most wondrous material known to man. Graphene was first, isolated at the University of Manchester in 2004 By Professor Kostya Nevoselov and Professor Andre Geim.   Currently several companies are putting graphene into use in develop the next generation devices.   The team of scientist according to a trusted source will use graphene with latex to develop a “nanomaterial” that could be used to make the thinnest condom.

With the experience, the team has on graphene we hope they will soon come up with a condom that will lower rate of HIV/AIDS and other sexually transmitted diseases transmission in the developing world.

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Lomiko Metals

Lomico Metals Inc. (CVE:LMR) is a company that engages in acquiring, exploring and developing mineral resource properties in Canada. The company is mostly engaged in the exploration of zinc, gold and graphite deposits. It has a large claim in Vines Lake Property in the south eastern part of Cassia town, found in British Columbia. It has some interests in Quatre Milles Property which cover at least 3,000 acres in the North Western parts of Montreal, Quebec. Initially, the company was known by the name Lomiko Resources Inc., and it acquired the new name in October 2008. Lomico Metals Inc. was incorporated in 1987 and is headquartered in Surrey, Canada.

Lomiko Metals Inc. has recently changed its main focus to the development of High-Performance Graphene-Enhanced materials that are vital for three dimensional (3D) printing. The 3D labs have gone a step further in promoting 3D printing technology in the current world. Best quality graphite is a basic material to be used in the production of graphene. Lomiko will generally provide quality graphite to Graphene 3D Labs and has been rated the most exclusive supplier which has interests to provide a $50,000 start-up capital for a quarter a million shares entitled to dividends.

Lomiko Metals Inc. recently announced its strategic alliance with Graphene Laboratories Inc., this process has resulted in the production of excellent quality graphene for various uses, despite the fact that the production is yet to be made efficient for commercial purposes; a lot is being done to improve the production process.

Lomiko is entering into various deals that will see them become one of the leading producers of this material; this has been made possible by investing more funds into the production of the materials as well as entering into contracts with other companies aimed at making the production process more efficient.

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Due to the discovery of more graphene applications, the University of Pennsylvania has established a small research company named “Graphene Frontiers” to provide technological solutions for production of quality graphene. This body was awarded 0.744 million dollars in September to improve production of graphene in a unique process known as the roll-to-roll process. This process is expected to make the production of high quality graphene more efficient than the rather. Graphene Frontiers is making attempts to lead other producers into creating polycrystalline mono-layers of graphene through a roll-on-roll process, as opposed to the current chemical vapor decomposition (CDV) process.

Types of graphene

There are two major types of graphene: monocrystalline and polycrystalline. These two types have different applications. Polycrystalline graphene is crucial to manufacture some types of transistors and advanced composites, while monocrystalline graphene is used in more advanced applications. Despite the high demand for monocrystalline graphene, its methods of extraction do not allow large scale production. Up to date, monocrystalline graphene is produced through mechanical cleavage a technique in which graphene is extracted from graphite in single layer flakes.

This limitation has attracted a lot of investments in research into best ways to extract monocrystalline graphene. One of the companies that has invested heavily in this is Graphene Frontiers. So far they have made a breakthrough and are working on ways of making it even better. There are numerous techniques suitable for producing excellent quality graphene, and since each of them has its own shortcomings and advantages, it is not possible to say which technique is best.

One of the most commonly used techniques entails extracting carbon layers from graphite using chemical, plasma and mechanical exfoliation techniques. Unfortunately, this process leads in the production of low quality graphene.

Advanced producers use CVD techniques which do not start with mined graphite. These result in the production of synthetic graphene. This type is of excellent quality, but the major problem is until now, convenient ways of producing it have not been realized.

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The first graphene-only integrated circuit was created by International Business Machines (NYSE:IBM) three years ago. However, this was not a complete breakthrough because they used largely silicon and metal for much of the hardware. University of California Santa Barbara has made a crucial discovery that involves designing an integrated circuit completely from graphene only. This new model is based on the fact that graphene displays different qualities depending on its pattern, i.e. a wide ribbon displays metallic qualities while a narrow ribbon displays semiconductor properties. If chips would be designed this way then they would be much thinner, efficient and easier to assemble as compared to the ones made with mixed material. Currently a graphene Integrated Circuit is a theoretical computer model yet to be practically made; there are no plans to produce graphene chips at the moment, therefore this could take some time to see.

Graphene Integrated Circuit – Super computer

As scientists continue to improve silicon based ICs (which involves fashioning smaller transistors onto a chip, reducing power consumption and increasing its performance) they face challenges of contact resistance. This is resistance that builds up when components conducting electricity get in touch with each other. This may not be a problem for a single component, but when there are millions of transistors and interconnects on a chip, the combined energy is a major concern.

As a designer fuses various small components onto silicon chips, more complications emerge. This is where graphene overcomes silicon. While silicon is purely a semiconductor, graphene has both conductor and semi conductor qualities. Therefore, it can act as a metal conductor and as a semi conductor just like silicon. Due to these two major qualities of graphene, a designer can fashion the entire IC onto a graphene sheet and successfully do away with any contact resistance.

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Pure Graphene

US researchers who worked on ways of making electrical contacts on graphene made two important discoveries in the process. Through use of a novel fabrication technique they have managed to create stacked layers of the finest quality of pure graphene yet. Simultaneously, they have managed to make electrical contact only along graphene’s one dimensional edge, thereby increasing the electron injection efficiently into graphene.

The two-dimensional structure of graphene makes it easy to contaminate, thus most of the techniques used when stacking the material within insulating material layers use specified polymers when picking and placing the sheets. The polymers are chemically sticky and rarely contaminate grapheme, thus enabling it to maintain its qualities. The research has disproved the theory that graphene’s ability to conduct would work far more efficiently was it to be confined to the edge of the sheets.

A team of Columbia University researchers headed by Cory Dean has appropriately addressed these problems. This was done by developing a process to create several layers of pure graphene encapsulated by several layers of boron nitride without involving extraneous materials. This was later on followed by exposing graphene’s edges to enable electrical contact.

On completing the assembly, a mask can be then be placed on the surface on top of this, and the sides are plasma edged away so as to expose the single dimension edges of the filling made of graphene. If there is need for electrical contact, the design provides that metals are deposited on the exposed edges.

Studies conducted further entailed research show one could efficiently inject electrons into the single dimension edge, and the studies have also proved electrons can fluently flow through the samples as long as the temperature is slow enough. Dean further argues this process can work well with a number of other two dimensional materials including the transitional metal dichalcogenides.

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Lunar Elevator

Scientists at Columbia University conducted a study which revealed that graphene retains most of its mechanical properties even when it has been stitched together from small fragments. This discovery may have been the first step toward large scale manufacture of carbon nanotubes, which could be essential in the manufacturing of the first space elevator, light – strong materials, and flexible electronics.

At the present moment, a practical breakthrough in the construction of a lunar elevator has not been realized. However, many scientists have performed experiments which show it will be possible through use of graphene. In these experiments, they have measured the strength of the microscopic carbon nanotube and proved it can indeed support the construction of such elevators.

The space elevator ribbon is constructed out of carbon nanotubes, which are at least 100 times stronger than steel but have flexibility equal to that of plastic. Scientists will only be able to make the ribbon to be used in the space elevator if they manage to make fibers out of carbon nanotubes. In the recent experiments, the materials that were involved were neither strong nor flexible enough to form such a ribbon.

Graphene ribbons have a very high tensile strength and very high elastic modulus, theoretically they are said to make the process of building a space elevator easy. There are two major ways that a lunar elevator ribbon can be built: in the first case a long carbon tube ideally several meters long will be braided into a rope like structure, and in the second case a shorter nanotube will be placed in a selected polymer matrix.

So far graphene is the ideal material for construction of the ribbon, the carbon-carbon bond in graphene is at least 0.142 nm. Scientists have proved that two sheets of graphene are held together by much stronger van de Waals forces than bulk Graphene.

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Graphene Ink

The graphene ink has three unique qualities which make it very important; it’s a good conductor of electricity, highly flexible and has optical transparency. This is a major step towards production of cheap and foldable electronics.

Developers have used graphene to print out circuits on many materials. Graphene can work well even when just an atom thick or 14nanometres, meaning it can create a very flexible form. Various scientists have made unique inventions with graphene ink.

In some instances, developers have used modern miracle stuff graphene in printing out circuits on clothing, thereby enabling people enjoy a wearable tech which does not rely on having to attach computers to your body, wearing big watches of AR glasses.

American scientists at the Cambridge University have invented a piano made by printing piano circuit board onto a garment using highly conductive graphene, to the amazement of many, they have also printed its digital display onto a kinky plastic using graphene ink.

Scientists have developed electronic ink that can print on a laser to conduct electricity.

Some developers have suggested the use of printable circuits in embedding health monitors in garments. They have also said there is a possibility of having graphene phone displays printed on human skin. For instance, people who love watching TV in bed can have a television printed on their hands. The graphene ink can also be used in cargo loading zones; preferably airports to ensure planes are loaded with the right cargo.

Scientists have also developed a laser-based anti fraud detector to be used in identifying fake banknotes, luxury goods and pharmaceuticals. This detector is based on the method used to print liquid crystal lasers using ink jet printers. Upon the technology getting fully established, it will save the millions of people who buy fake products unaware while believing that they will recover.

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Graphene is considered the next generation material for solar panel construction where it is expected to be a primary component in solar cells. By coating it with a silicon film, it retains its transparency and conductivity, thereby making it the best material for making solar cells thus far. The Helmholtz-Zentrum Berlin (HZB) Institute for Silicon Photovoltaics recently conducted a research which proved this fact. The findings have opened doors for the use of graphene in the thin-film photovoltaics industry.

Graphene solar cells

Graphene is an ideal material for solar cells because it’s transparent, cheap, a good conductor, and non-toxic. The transparency quality makes it a perfect material for solar cell construction because it does not reduce the amount of incoming light.

The Michigan Technological University researchers have made various developments in graphene solar cells. In the first case, they developed a structure so that the graphene sheets are held apart by lithium carbonate; this method has attained 7.8% efficiency. In the second case the researchers have worked out models of solar cells from single graphene and molybdenum diselenide cells; these are expected to produce 1,000 times more energy than that of equally weighing materials. In the third case, the MIT scientists have developed solar cells by combining graphene and zinc oxide, and the cost of producing these cells will be cheaper as compared to other options.

Another major development has been made by the Massachusetts Institute of Technology (MIT) in Cambridge, Mass. They have built solar cells using graphene and AuCl3, this is an organic photovoltaic with a high absorption effect, low weight and low cost. Since these organic photovoltaics are transparent, it implies they can be used on windows, thereby enabling you to tap your solar energy conveniently.

Other developments of graphene in making solar cells have been done by the University of Florida in the US. They have achieved the most efficient graphene based solar cell (at 8.6%) by making of dope technology.

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Researchers have developed a graphene liquid cell that can be used together with the conventional transmission electron microscopy (TEM) to view ‘soft materials’ in three-dimensional. The term ‘soft materials’ refers to a number of things, including biological compounds such as protein, plastics, DNA, flexible electronics, therapeutic drugs, and some types of photovoltaics.

Even though these materials form an integral part in our lives, it has been a challenge to study them conveniently. These materials (especially biological compounds) pose numerous questions, especially the way they behave at the nanoscale.

3D printing-DNA

Through a combination of transmission electron microscopy (TEM) and their own unique graphene liquid cell, the researchers have recorded the three-dimensional motion of DNA connected to gold nanocrystals. This is the first time TEM has been used for 3D dynamic imaging of so-called soft materials. Conventionally, TEM focuses a beam of electrons on the soft materials to illuminate and magnify them as means of providing a resolution used to study their properties. This technique, unlike the use of light, requires a high vacuum setting since molecules in the air perturb the electron beam. In such a high vacuum environment, liquids evaporate. This necessitates soft materials that are highly viscous to be sealed hermetically using special solid containers. These containers, called cells, have a viewing window through which the TEM forms an image.

For some time now, these viewing windows have been made of silicon which limits the resolution of the soft materials under study because of its thickness. It also disturbs the soft materials’ natural state. To overcome these challenges, researchers have now developed a liquid cell made from graphene membrane, which is one atom thick.

They bonded two opposing graphene sheets to form a sealed nanoscale chamber. This chamber has within it a stable aqueous solution which is transparent to the electron beams of the TEM. This minimizes the loss of imaging electrons as well as provides a very high resolution which is touted to be very useful in studying soft materials.

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Given the impending bottleneck of supply in indium tin oxide, a material currently used as a transparent conducting film, researchers are now focusing their attention on graphene as a cheaper alternative since it has ideal properties for this purpose.

Photo-voltaic manufacturers have taken little interest in using graphene as a replacement of indium tin oxide as a transparent conducting film, even when graphene has the highest potential of filling this looming gap. This lack of interest has been partly due to little research into what happens to graphene’s attractive conductivity when used together with silicon.

This, however, will change now that researchers have found out that graphene does not lose its remarkable properties when used together with silicon.

Graphene and Silicon Solar Cell

Researchers had revealed that when graphene is incorporated into a pile of layers, same a thin film solar cell based on silicon, the material does not significantly change its conductive properties as initially feared.

The researchers used a process of chemical vapor deposition to grow the graphene on a copper sheet, transferred it to a substrate made from glass, and then covered it with a thin film made from silicon. The researchers experimented with different morphologies of silicon and found out that graphene maintained its conductive properties in all cases. Graphene still retains its properties, even when coated with silicon with different characteristics.

The conductive properties of graphene, when measured, exceeded most materials. For instance, its carrier mobility is 30 times higher than that of the conventional contact layers based on zinc oxide. Despite the fact that it is difficult to use contact layers made from graphene with external contacts, the prospects have attracted interest all over the world. Already, thin film technology enthusiasts have invested in incorporating this development in their work.

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