High-performance graphene-based biosensors to help detect blood disorders

Scientists in Germany and Korea took Aptamer-based electrochemical biosensors, known for their high sensitivity and low detection limit, to the next level in their new “label-free” design based on laser-induced graphene, thus paving the way for their easy application in point-of-care diagnostics.

Laser-induced graphene interdigitated electrodes for label-free aptamer-based biosensors image

Thrombin is an enzyme that plays a vital role in wound healing by helping retain blood within the damaged blood vessel—a process known as hemostasis. What is more interesting to biologists, however, is that thrombin is found in increased concentrations under abnormal conditions, and thus can be used to diagnose and monitor blood disorders and malignancies. Thus, it is crucial to detect even minute concentrations of thrombin in the blood. The team of researchers has now devised a novel biosensor for accurately detecting minute amounts of thrombin in the blood, that holds a potential to revolutionize the field of blood disorder diagnostics.

Researchers design an accurate, high-speed, portable bifunctional electrical detector for COVID-19

A research team at South China University of Technology, Peking University and other China-based universities have developed an accurate, rapid, and portable electrical detector based on the use of graphene field-effect transistors (G-FETs) for detection of RNA from COVID-19 patients.

Schematic diagram of the operation procedure of our G-FET-based biosensing system for COVID-19 image

The detection system consists of two main parts: a plug-and-play packaged biosensor chip and an electrical measurement machine. The unique feature of this method is that the extent of hybridization between the ss-DNA probe and viral RNA can be directly converted to the current change of graphene channels without repetition of the PCR process. Furthermore, this method was validated using clinical samples collected from many patients with COVID-19 infection and healthy individuals as well, and the testing results were in full agreement with those of PCR-based optical methods.

LiGC's laser-induced graphene filter based virus filter is now available for pre-order

Israel-based laser-induced graphene developer LIGC Application announced that its ViralWall air-purifier is now available for pre-order. The ViralWall costs $279, and will ship in April. Graphene-Info users can enjoy a 10% discount, just use this link to order and make sure to enter the discount code (graphene-info) when you checkout.

Using a graphene-based filter, the ViralWall "cleans the air from airborne bacteria and viruses and creates an invisible 1.2x1.6 meter air screen between people to prevent the spread of harmful airborne particles".

Zen Graphene Solutions and TreborRx announce nitrile glove agreement

Zen Graphene Solutions logo imageZen Graphene Solutions has announced an agreement reached on January 16th with TreborRx (Trebor) for application of its graphene-based coating on nitrile gloves sourced or produced by Trebor.

ZEN will provide Trebor with a distribution agreement for Canada, the USA and Mexico. Trebor agrees to use the coating on all gloves sold and will pay ZEN a royalty per glove coated, with a minimum first year guarantee of 100 million gloves.