Tata Steel develops a unique few-layer rGO film material

Tata Steel has developed a new product, a few-layer film of rGO along with its collaborators at CeNS, Bengaluru. The company is now starting to mass-produce the films and offer them to application developers.

Digital imaging and AFM of rGO film on cu (Tata Steel)

Figure 1: (a) Digital image of rGO/Cu foil (5 cm2). Contactact angle (b) and AFM height profile (c) on rGO/Cu

The rGO film is produced (using a modified CVD process) on copper. The film's average thickness is 5-10 nm and offers a corrosion rate of 0.02 mm/year (Tafel) and a water contact angle of ~ 97°.

These unique properties make the film suitable to protect the copper from corrosion, chemical attacks, and thermal oxidations. It also makes copper hydrophobic and can act as an antibacterial surface.

How concerned should we be about graphene's toxicity?

The potential toxicity of graphene and graphene oxide has been on people's minds lately. This is an area that has always received some attention, but recently there have been rumors and wild speculations about the adoption of graphene oxide and the risks involved.

Grapene toxicity poll results (August 2021)

Researchers have been studying the toxicity of graphene and graphene oxide for many years. While these materials have not yet been established as completely safe for use, there are quite a few research results that indicate that graphene can be relatively safe under the appropriate conditions.

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Research team examines graphene's effects on the lungs

Researchers from Empa and the Adolphe Merkle Institute (AMI) in Fribourg have conducted studies on a 3D lung model to examine the behavior of graphene and graphene-like materials once they have been inhaled.

AMI lung model imageThe lung model at Adolphe Merkle Institute (AMI)

Thanks to the 3-D lung model, the researchers have succeeded in simulating the actual conditions at the blood-air barrier and the impact of graphene on the lung tissue as realistically as possible – without any tests on animals or humans. It is a cell model representing the lung alveoli. Conventional in vitro tests work with cell cultures from just one cell type – the newly established lung model, on the other hand, bears three different cell types, which simulate the conditions inside the lung, namely alveolar epithelial cells and two kinds of immune cells – macrophages and dendritic cells.

Theragnostic Technologies receives grant to expand its graphene-based contrast agent platform to X-Ray CT procedures

In 2012, researchers from Stony Brook University established Theragnostic Technologies to develop a new efficient and cost-effective graphene-based MRI contrast agent. In 2015 Theragnostic launched the product, called ManGraDex, which needs several of years of clinical trials before it can be commercialized (the company aims for 2022 or 2023).

Theragnostic Technologies now announced that it has received a new SBIR phase-1 grant from the NIH to extend the ManGraDex platform for use in X-ray Computed Tomography (CT) imaging. The company will demonstrate the preclinical safety and efficacy of a novel graphene-enhanced CT contrast agent for imaging and monitoring in patients with renal failure or at risk of contrast induced nephropathy.