Grafoid raises $3.5 million from private investors on the way to MesoGraf mass production

Grafoid announced today that they completed a new funding round from private investors, raising just over $3.5 million USD. Earlier in 2013 the company raised a further $1.5 million, which means the company raised over $5 million USD since the beginning of 2013.

The company says that this financing round brings them a step closer to the consruction of their MesoGraf production facilities. Mesograf is Grafoid's graphene-based material announced two months ago. Grafoid collaborates with the National University of Singapore (NUS) and their new spin-off company Graphite Zero on the production, development and marketing of this material.

Read the full story Posted: Jul 09,2013

Grafoid to mass produce affordable high-quality graphene materials called MesoGraf

Grafoid sent us some very interesting news today as the company launched their graphene-based material platform called MesoGraf. They say that they will able to mass produce high-quality graphene at affordable prices. The National University of Singapore (NUS) launched new spin-off company called Graphite Zero which will handle the development and production of MesoGraf. Grafoid holds the majority stake in the new company, and will handle business development and marketing for the new material.

Grafoid says that they have managed to create a low-cost process that will enable them to mass produce graphene Mesograf materials. They say that their one-step chemical process is non-destructive and is environmentally sustainable.

Read the full story Posted: May 26,2013

Graphene and TDMC enable multifunctional materials, first one is an efficient solar cell

Researchers from Manchester University and the National University of Singapore developed a new, efficient and sensitive solar cell made from sheets of graphene and transition metal dichalcogenides (TMDC). The TMDC (also a 2D material) sheets are very efficient light absorbers while the graphene is used as a transparent conductive layer.

The researchers are optimistic that more and more photoactive "heterestructures" such as the one developed now can be achieved, which will allow them to design multi-functional materials with new functionalities (for example color changing).

Read the full story Posted: May 05,2013

Graphene used to create highly corrosive water

Researchers from the National University of Singapore (NUS) have managed to create water that is corrosive enough to etch diamonds. This was discovered by mistake - the researchers attached a layer of graphene on diamond, and then heated it to a high temperature (to encourage bonding). Water molecules that were trapped between the diamond and graphene could not escape (because graphene is impermeable ).

The "trapped", heated water transformed into a supercritical phase that behaves differently compared to "normal" water. It even corroded the diamond.

Read the full story Posted: Mar 13,2013

The National University of Singapore invests $11 million in a graphene production facility

The National University of Singapore's Graphene Research Centre have launched their new graphene fabrication facility. The new facility will be fully operational by October (the cost is $15 million Singapore dollars, or about $11.8 USD).

The NSU plans to use the facility to develop new technologies for flexible and transparent devices and some new designs that doesn't even exist today.

Read the full story Posted: Jun 18,2012

Dramatic optical limiting effect in graphene demonstrated

Researchers from Singapore and the UK demonstrated a dramatic optical limiting effect in graphene using dispersed sub-oxidized graphene. While transparency in graphene is useful, having non-transparent (or light limiting) graphene also has its applications.

The optical-limiting effect achieved using suspensions of carbon nanotubes or carbon black occurs through a 'damage' mechanism involving the development of microbubbles or microplasmas at high light fluence, which increases light scattering and breaks the optical transparency.

Read the full story Posted: Nov 07,2011

Researchers created graphene quantum dots from C60 fullerene

Researchers from the National University of Singapore (NUS) and A*STAR developed a new method to create Quantum Dots from Graphene. The idea is to start with a C60 fullerene (a soccer ball like spherical carbon structure that costs of 60 carbon atoms) and 'open' them up (or decompose them) at high temperature using ruthenium as a catalyst.

The researcher performed the decomposition using a sparser coverage of fullerenes on the catalytic ruthenium surface than previously tried - which gave the fullerenes room to prevent carbon atoms from diffusing from one fullerene to the next.

Read the full story Posted: Jun 13,2011

Researchers invent a graphene-based ultra-slim broadband polarizer

Researchers from the National University of Singapore (NUS) invented a graphene-based an ultra-slim broadband polarizer. They say that such a polarizer can broaden the bandwidth of fiber optic networks. A graphene polarizer covers the telecommunication bands from visible to mid-infrared which means that it can be a complete solution for multiple-channel communications.

The team says that unlike regular polarizers (made from thin metal film or semiconductor dielectric) a graphene polarizer has the unique ability to filter out transverse-magnetic-mode and supports transverse-electric-mode surface wave propagation.

Read the full story Posted: Jun 07,2011

Graphene Quantum Dots can be made from Buckyballs

Researchers from Singapore discovered that graphene quantum dots can be made from carbon-60 molecules (C60, known as buckyballs). This is the first "bottom-up" approach to make graphene quantum dots - which could lead to more efficient and cheaper designs.

Graphene-based Quantum Dots photo

The QDs are smaller then 10nm in size and are all in the same size and shape. The idea is to decompose C60 molecules at high temperatures on a ruthenium metal surface. The metal acts as a catalyst and causes the C60 to break down into carbon clusters. The researchers were able to limit cluster aggregation and at around 825K temperature the clusters merged and crystallized into hexagonal-shaped graphene QDs.

Read the full story Posted: Mar 23,2011

SiO2 can be used to improve a Graphene based FET, paves the way towards Graphene nonvolatile memory

Researchers from the A*STAR Institute of Materials Research and Engineering and the National University of Singapore have developed an improved design for a Graphene based field-effect transistor (FET). The new device includes an additional silicon dioxide (SiO2) dielectric gate below the graphene layer. This allows for simplified bit writing by providing an additional background source of charge carriers.

The new device can lead the way towards ;graphene–ferroelectric FETs to be used for nonvolatile memory. The researchers say that the new design achieved impressive practical results - symmetrical bit writing with a resistance ratio between the two resistance states of over 500% and reproducible nonvolatile switching over 100,000 cycles.

Read the full story Posted: Feb 16,2011