August 2024

Archer Materials has started experiments to detect and monitor chronic kidney disease on its Biochip graphene field effect transistor (“gFET”) sensors.

Archer, through one of its foundry partners, has reportedly verified a process that directly grows graphene surfaces to produce enhanced devices, rather than transferring the graphene to a device from a wafer, as previously done. The team has tested the devices by storing them in normal air conditions over a two-month period, finding no significant degradation in performance. 

Researchers at Swansea University, in collaboration with China's Wuhan University of Technology and Shenzhen University, have developed a technique for producing large-scale graphene current collectors that could significantly enhance the safety and performance of lithium-ion batteries (LIBs).

Their recent study details the first successful protocol for fabricating defect-free graphene foils on a commercial scale. These foils offer excellent thermal conductivity - nearly ten times higher than traditional copper and aluminium current collectors used in LIBs.

Danish Graphene has announced that its battery laboratory is now fully setup and operational. The Company sees this as a significant milestone, as it now has the capability to produce and test batteries containing graphene, entirely in-house. 

With this new battery laboratory, Danish Graphene can manage the whole process internally – from production of individual components to the final assembly of coin cell batteries. This allows the Company to maintain strict quality control and explore new technologies and materials.

Cerebral Energy has announced it has been selected by AFWERX (the innovation arm of the U.S Air Force, powered by the Air Force Research Laboratory (AFRL)) for a Phase II STTR follow-on contract in the amount of $1.6 million to support further development of a new lithium-free secondary battery using recycled aluminum and graphene derived from recycled US waste streams. 

The technology was developed by Dr. Lynden Archer - Dean of the School of Engineering at Cornell University and licensed by Cerebral. The novel aluminum battery design is over 3X more efficient than lithium, and said to be much safer (no fire risk), 10X faster charging and has no supply chain challenges since the materials are derived from US waste streams. Known as "AGILE," the batteries will first support Air Force Special Operations Command (AFSOC) medical modernization teams to address their pressing tactical power issues.

First Graphene has secured funding for a collaborative research project with Swansea University to determine the market potential of the Company’s Kainos Technology.

The grant is valued at approximately AU$192,152 (over USD$130,000) and was secured through Analysis for Innovators (A4i) Round 12, Stage 2 funding, delivered by Innovate UK. The funding is specifically meant for businesses utilizing expertise from leading research facilities across the UK to overcome
productivity or technical barriers of new technologies towards market readiness.

Hot-carrier transistors are a class of devices that leverage the excess kinetic energy of carriers. Unlike regular transistors, which rely on steady-state carrier transport, hot-carrier transistors modulate carriers to high-energy states, resulting in enhanced device speed and functionality. These characteristics are essential for applications that demand rapid switching and high-frequency operations, such as advanced telecommunications and cutting-edge computing technologies. However, their performance has been limited by how hot carriers have traditionally been generated.

A team of researchers, led by Prof. Liu Chi, Prof. Sun Dongming, and Prof. CHeng Huiming from the Institute of Metal Research (IMR) of the Chinese Academy of Sciences, has proposed a novel hot carrier generation mechanism called stimulated emission of heated carriers (SEHC). The team has also developed an innovative hot-emitter transistor (HOET), achieving an ultralow sub-threshold swing of less than 1 mV/dec and a peak-to-valley current ratio exceeding 100. The study provides a prototype of a low power, multifunctional device for the post-Moore era.

Researchers from Nagoya University, Osaka University and National Taiwan University recently developed a method for the high-speed, large-area deposition of two-dimensional (2D) materials, including oxides, graphene oxide, and boron nitride. This innovative technique, known as the "spontaneous integrated transfer method," was discovered by chance; however, it could significantly improve the production of nanosheets.

Traditionally, methods like chemical vapor deposition (CVD) and the Langmuir-Blodgett (LB) technique have been employed for nanosheet fabrication. However, these methods have significant disadvantages, including difficulties in achieving uniform, large-area deposition and complications in the substrate transfer process. Aiming to develop a more effective deposition technology, the research team discovered a fascinating phenomenon completely by chance: when nanosheets get wet, they spontaneously align themselves on the surface of water, forming dense films within a mere 15 seconds. This process, termed the "spontaneous spreading phenomenon," suggested a more effective deposition technology.

Pulsed laser micropropulsion (PLMP) offers a promising avenue for miniature spacecraft, yet conventional propellants face challenges in balancing efficiency and stability. Researchers from Wuhan University, Henan Academy of Sciences and Purdue University have proposed an optical-propulsion metastructure strategy using metal-organic frameworks (MOFs) to generate graphene-metal metastructures (GMM), which significantly enhances PLMP performance.

A) Illustration of PLMP mechanism and the possible applications of MOFs-derived GMM-based PLMP. B) Preparation schematic of GMM. Image from: Advanced Materials

MOFs, which consist of metal cations or clusters coordinated with organic ligands, can serve as ideal precursors for creating hybrid structures that combine the benefits of both carbon and metal components. By employing ultrafast laser interactions with MOFs, researchers have been able to synthesize GMMs with precisely controlled metal nanoparticle sizes, graphene layers, and inter-particle gaps, all in an ambient air environment. These GMMs exhibit remarkable properties, including high light absorption efficiency, enhanced energy transfer, and improved material stability.

HydroGraph Clean Power recently announced the publication in the ACS Sustainable Chemistry and Engineering journal of its joint findings with the School of Sustainable Engineering and the Built Environment at Arizona State University (ASU).

The findings are said to validate the superior technical and commercial performance of HydroGraph’s pristine graphene, demonstrating its effectiveness in cement, with compressive strength improved by up to 70% in the early curing period and stabilizes after 28 days to a 15% increase. Tests also showed a reduction in Global Warming Potential (GWP), a measure used in Life Cycle Assessment (LCA) to evaluate the impact of different greenhouse gases on global warming, of 10% to 15%.

Zentek has announced that it has closed its non-brokered private placement for gross proceeds of CAD$3,069,950 (around USD$2,254,000). Net proceeds of the Offering will be used for working capital and general corporate purposes.

Zentek's CEO, Greg Fenton, commented: "We would like to thank all those who participated in the Offering. This funding will allow us to immediately allocate resources to our international market expansion strategy, where ZenGUARD-coated HVAC filters can play a meaningful role in an entity's sustainability objectives."