Article last updated on: Jan 25, 2019

The latest graphene sensor news:

Qurv Technologies wins "Best Imaging Technology" award at SEMI's Technology Unites Global Summit

Qurv Technologies logo imageQurv Technologies, a Spain-based startup developing wide-spectrum image sensors based on graphene and quantum-dot technologies, has won the Imaging Sensors Technology Showcase at the Technology Unites Global Summit.

The Qurv wide-spectrum image sensor was recognized as the best imaging technology. The selection of winners (Infineon Technologies also won an award for its environmental sensor as the leading MEMS technology) was made from five finalists in each category in a vote by a committee of industry experts.

Grapheal raises almost $3 million for graphene-based biosensors, hopes to hit the market by end of 2021

Grapheal logoGrapheal, a developer of graphene-based embedded biosensors for on-site diagnostics and remote patient monitoring, has announced that it has raised a total of EUR1.9 million (almost USD$3 million) in equity and non-dilutive sources, including seed financing from Novalis Biotech’s Acceleration Fund, several innovation grants, and Bpifrance convertible notes and loans.

The funds will be used to advance the commercialization of Grapheal’s flexible graphene-based biosensor technology. This sensing technology combines novel electronic nanomaterials, embedded wireless electronics, software data analysis, and medical cloud IoT technologies. The first two applications of the technology will be a new generation digital COVID-19 test (TestNPass) for rapid screening in high-traffic areas, such as airports, and a wound care digital assistant (WoundLAB) to improve the monitoring of hard-to-heal wounds. The funds will also be used to validate the two devices in the field and complete clinical studies, respectively.

New graphene-based sensing system to detect cortisol stress hormone in sweat

Scientists at EPFL, in collaboration with startup Xsensio, have developed a graphene-enhanced wearable system that can continually measure the concentration of cortisol—the stress hormone—in human sweat. Their device can potentially help to better understand and treat stress-related conditions like burnout and obesity.

Graphene sensor detects cortisol in sweat imageSchematic of extended-gate FET configuration used in this work. Image from article

The team developed a small wearable sensor that can be placed directly on a patient's skin and can continually measure the concentration of cortisol, the main stress biomarker, in the patient's sweat.

Quantum tunneling in graphene enables highly sensitive terahertz detectors

Scientists from MIPT, Moscow Pedagogical State University and the University of Manchester have created a highly sensitive terahertz detector based on the effect of quantum-mechanical tunneling in graphene. The sensitivity of the device is said to already be superior to that of commercially available analogs based on semiconductors and superconductors, which opens up prospects for applications of the graphene detector in wireless communications, security systems, radio astronomy, and medical diagnostics.

Information transfer in wireless networks is based on transformation of a high-frequency continuous electromagnetic wave into a discrete sequence of bits. This technique is known as signal modulation. To transfer the bits faster, one has to increase the modulation frequency. However, this requires synchronous increase in carrier frequency. A common FM-radio transmits at frequencies of hundred megahertz, a Wi-Fi receiver uses signals of roughly five gigahertz frequency, while the 5G mobile networks can transmit up to 20 gigahertz signals. This is far from the limit, and further increase in carrier frequency admits a proportional increase in data transfer rates. Unfortunately, picking up signals with hundred gigahertz frequencies and higher is an increasingly challenging problem.

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.

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