3D printing (or additive manufacturing) refers to a process in which a 3D printer is used for stacking layers of material under computer control, following a 3D model (or other electronic data source), resulting in a printed three-dimensional object.

ORDbot Quantum 3D printer photo

Various applications for 3D printing include design visualization and prototyping, metal casting, architecture, education, healthcare, entertainment and more. As 3D printing technology continues to evolve and develop, researchers imply possible biotechnological uses like bio-printing and computer-aided tissue engineering as well as retail manufacturing of custom end products which might change the face of commerce.

A large number of 3D printing processes exist nowadays, differing mainly in their methods of layering and the materials that are used. Some methods melt or soften material to produce layers while others use liquid materials or thin layers of material that are cut to shape and joined together. 3D printing materials are varied, and include Thermoplastics, HDPE, Rubber, edible materials, clay, metal alloy, and more. New technologies, such as infusing carbon fibers into plastics, allow for a stronger, lighter material.

Graphene, a single-atomic layer of carbon atoms arranged in a hexagonal lattice, is repeatedly dubbed a “wonder material” due to its immense array of uncanny properties like extraordinary conductivity, flexibility and transparency.

Graphene-enhanced nanocomposite materials greatly improve traditional materials used in 3D printing, like plastics. Graphene nanoplatelets that are added to polymers make materials that are mechanically stronger and with improved thermal and electrical conductivity.



Graphene 3D Labs logoGraphene 3D Lab, a joint-venture between Graphene Labs and Lomiko Metals, is one of the leaders in this new market. The company's founder and COO, Dr. Elena Polyakova comments in an interview for Graphene-info on the advantages of graphene-based materials over current 3D printing materials: “Fused Filament Fabrication (FFF) -- a method of 3D printing in which filament is extruded layer by layer to create objects -- capabilities are currently bound by the offerings of filaments, which generally includes non-functional thermoplastics. While such plastics are great for printing desktop models and fascinating gadgets, the real-world applications of printing with such filaments by themselves are limited. By creating a line of materials with functional properties, the capabilities of FFF 3D printers will be greatly expanded.

By way of example, filaments infused with graphene can be conductive and much more durable than non-specialized filaments, features which are necessary for a host of applications. We also intend to develop filaments with other functional properties, including magnetic capabilities.” as per Dr. Polyakova's words, Graphene 3D Lab is funded to begin production of printing filaments in the near future, and is working towards a target of reaching commercial production around the first half of 2015.

Graphene 3D Labs also plans to produce 3D printable batteries, based on graphene. These batteries can potentially outperform current commercial batteries, and will come in shapes and sizes that can be tailored to match the designs of specific devices. The company already unveiled a prototype battery in October 2014. In March 2015 G3L announced that it has launched commercial sales of its conductive graphene filament for 3D printing. The filament incorporates highly conductive proprietary nanocarbon materials to enhance the properties of PLA, a widely used thermoplastic material for 3D printing. The filament is therefore compatible with most commercially available 3D printers. In June 2015, the company announced the signing of a Memorandum of Understanding with Ideum, a company which develops large-scale smart-tables and walls. The agreement lays the foundation for joint research, product development, and marketing between the two companies. Graphene 3D and Ideum will evaluate and co-develop products by Graphene 3D which can be used as capacitive sensors to interface with Ideum's products. Graphene 3D will also begin commercial on-demand 3D printing of coasters, joysticks, and styluses which Ideum clients can use to interact with their smart-tables. For example, styluses of various shapes, 3D printed in Conductive Graphene Filament, may be used as brushes used in photo editing software to give a more hands-on feel to creative work done on an Ideum smart-table.

In May 2015, researchers at Northwestern University designed a method to print 3D structures using graphene nanoflakes, by developing a graphene-based ink that can be used to print large, robust 3D structures. This fast and efficient method may open up new opportunities for using graphene printed scaffolds and various other electronic or medical applications. Also in May 2015, researchers at Michigan Technological University progressed in their work to 3D print replacement nerves using 3D bioprinting techniques. The team has developed polymer materials that can act as a scaffold for growing tissues and is working on integrating graphene as the electrical conductor.

In March 2015, U.S-based Local Motors declared plans to 3D print vehicles within 12 hours, reinforcing extruded printed material with graphene. The company reported significant progress in its additive manufacturing technology since it unveiled its Strati vehicle. The company was looking to reduce the print time to 12 hours, with a four to five-hour assembly time, and had been speaking to a Korean firm about sourcing graphene for extruding in composite 3D printing materials.

In July 2014, US-based Graphene Technologies announced a partnership with Stratasys to co-develop graphene-enhanced 3D printing materials.

A 12X12 meter 3D graphene-fiberglass printer was unveiled by Qingdao Unique Products Develop during a trade show in China. It is meant to print building in the future, according to the company, using a fiberglass-graphene composite that will allow the creation of very strong objects.

Grafoid, a Canadian based company, signed an agreement with Altamat to construct an atomization facility to produce MesoGraf graphene-based powders and filaments for 3D printing for use in a wide range of functionalized powders for 3D printing applications. Grafoid hopes to supply a wide range of Mesograf-based powders and filaments that will allow manufacturing companies in every industry to utilize additive manufacturing processes to produce their end products on demand, not solely for prototyping purposes.

Australian company 3D Graphtech Industries, established by CSIRO organization to investigate research opportunities in 3D printing using graphite and graphene inks, will jointly perform a white-paper study to identify technological problems in the 3D printing market that can be solved in an R&D program to provide a commercial solution.

US based AGT launched a similar research project in collaboration with Ukraine's Kharkiv Institute of Physics and Technology ("KIPT").

Further reading

Latest graphene 3D printing news

Versarien to collaborate with Chinese aerospace company

Versarien LogoVersarien has announced its plans to enter an agreement with a large state-owned Chinese aerospace company. The Partner is said to mainly be engaged in the research, design, manufacture and operation of various aerospace systems.

The agreement details the parties' desire to collaborate and ultimately enter into a strategic cooperation covering research, development and manufacturing in order to accelerate the industrialization and market for graphene and other Versarien 2D materials, including Hexotene, in the Chinese aerospace sector. This will include exploring their uses within the fields of, amongst others, microwave and electromagnetic radiation shielding, heat dispersion coatings, 3D printing and flexible wearable devices.

Zenyatta provides updates on fund-raising and graphene applications progress

Zenyatta logoZenyatta Ventures has announced its plans to raise up to $3,000,000 CAD (around $2,240,000 USD) on a non-brokered private placement basis. The proceeds will be used for bulk sampling, environmental assessment and community engagement.

Zentayya also provided an update on its graphene market development work ,which has led to the creation of five significant potential market verticals for the Company which include aerospace, biomedical, water treatment, transportation and civil engineering.

The Graphene Handbook

Graphene oxide and alginate combine to create new ‘smart’ material with potential biomedical, environmental uses

Researchers at Brown University, the University of Wisconsin and the National University of Singapore have developed a way of reinforcing hydrogel materials made from alginate, a natural material derived from seaweeds that’s currently used in a variety of biomedical applications, by incorporating graphene oxide into its structure.

Graphene oxide and alginate combine to create new ‘smart’ material with potential biomedical, environmental uses image

This produces a material that can be 3D printed into structures that are stiffer and more fracture resistant than alginate alone - an important achievement as alginate tends to be fragile and thus hard to work with. Furthermore, the material is also capable of becoming stiffer or softer in response to different chemical treatments, meaning it could be used to make “smart” materials that are able to react to their surroundings in real time. In addition, alginate-GO retains alginate’s ability to repel oils, giving the new material potential as an anti-fouling coating.

Bionic mushroom interacts with bacteria and graphene to generate electricity

In a recent study, researchers from the Stevens Institute of Technology in the U.S have come up with an original idea - they designed a bionic mushroom that uses graphene to produce electricity. More accurately, the researchers have generated mushrooms patterned with energy-producing bacteria and an electrode network.

Bionic mushroom generates electricity image

Many examples of organisms that live closely together and interact with each other exist in nature. In some cases, this symbiotic relationship is mutually beneficial. The research team wanted to engineer an artificial symbiosis between button mushrooms and cyanobacteria. In their vision, the mushroom would provide shelter, moisture and nutrients, while bacteria 3D-printed on the mushroom's cap would supply energy by photosynthesis. Graphene nanoribbons printed alongside the bacteria could capture electrons released by the microbes during photosynthesis, producing bio-electricity.

New graphene scaffold capacitors break capacitance records

Researchers at the University of California, Santa Cruz and Lawrence Livermore National Laboratory in California have developed a new fabrication technique to make capacitors enhanced with graphene. The resulting devices store a large amount of charge over a given surface area - an important metric for measuring the performance of a capacitor.

The new technique uses a 3D printer to construct a microscopic scaffold with porous graphene and then fills the structure with a kind of material called a pseudocapacitive gel, which is a kind of capacitor material that also behaves like a battery in some ways.