Archer Materials Ltd Shares Increase After Embedding Single Atom Thick Graphene on Silicon Wafer


Archer addressed a key nanotechnology challenge in the development of his biochip by successfully integrating single atom thick graphene onto a silicon wafer.

Shares of Archer Materials Ltd (ASX: AX, OTC: ARRXF) jumped as much as 29.13% in one day to A $ 1.33 after successfully integrating a sheet of graphene with a thickness of a single atom with silicon electronics.

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Archer is advancing its “lab-on-a-chip” (biochip) technology that would analyze and process droplets of biological samples using graphene-based sensors.

The biochip requires graphene materials in electronic circuits (i.e. micro- and nano-fabrication of graphene-based transistors), which would form miniaturized devices that act as ultra-sensitive sensors to detect and analyze biochemical targets, for example, to identify viruses or bacteria.

Recently, Archer successfully fabricated nano-sized electronic components on silicon wafers, inside hair-like microfluidic channels required for lab-on-a-chip functions of mixing and transporting biological samples.

In parallel, the company has also developed chemical reaction pathways to potentially enable future applications of the Archer biochip in the detection of various diseases.

Archer has now, thanks to his in-house capabilities, successfully integrated a single atom-thick sheet of graphene with silicon electronics (Image 1).

Archer’s progress in its nanofabrication of biochips. A Miniaturization of biodetection electrode components to feature size 100 to 150 nanometers on silicon wafers, which would result in approx. 1 million sensor components per cm2. B Archer is expanding its access to state-of-the-art institutional high-tech infrastructure and facilities. The image shows an Elionix ELS125 electronic lithography system which was used to arrive at the last result. VS Archer establishes chip testing operations in a semiconductor manufacturing environment to test graphene devices and their operation. D Archer manufactures and integrates nanoscale biochip electrodes similar to those of A in microfluidic channels on microarray compatible substrates demonstrating increased compatibility with the functions required for laboratory-on-a-chip biosensing. Microfluidic channels are approximately 3 times thinner than human hair. E Optical microscope image looking directly down on a silicon wafer containing graphene embedded with metallic electrodes similar to those of A. Graphene is barely visible in the device, as the material is only one atom thick (less than a billionth of a meter), however, some stripe-like (blue) lines appear due to crumbling of the graphene sheet.

Archer’s staff used an advanced electron beam lithography system to repeatedly and reproducibly fabricate the graphene devices.

The work represents a significant technical achievement as it required the precision engineering of atomically thin materials and devices that are fundamental to the scalability, biosensing functionality and functioning of the biochip.

“An important step in the development of the biochip”

Commenting on the progress of biochip development, Archer CEO Dr Mohammad Choucair said: “Archer’s use of advanced lithography systems to successfully integrate graphene into silicon electronics is a milestone. in the development of the company’s biochip.

“It’s the culmination of a lot of strategic planning and coordination involving talented people, world-class facilities and technology to get to this point.

“It’s exciting that Archer’s 12The development of quantum CQ chips could also benefit from this latest achievement. “

Graphene has unparalleled properties

Graphene is an advanced material with nanoscale electronic properties that make its use for biodetection very beneficial.

It has unparalleled properties such as high electron mobility and chemical stability in biologically relevant liquids which allow it to be used as an electrical conduit to detect the activity of biological molecules.

Archer’s biochip design principles include the micro- and nano-fabrication of detection devices integrated into regions of a chip that work with other functional regions made on the same chip to process, detect and analyze biological samples.

Graphene, when integrated into a nanoelectronic device, would act as a detection component of the biochip, to detect and process biosensing signals.

The work Archer is doing in manufacturing graphene devices is an important step in the potential future exploitation of Archer’s biochip.

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