Graphene-Info | Graphene industry portal - Page 2

Plaid Technologies has announced the completion and internal validation of an advancement in its cement-enhancement process, representing a step forward in the evolution and scalability of its graphene-enhanced wellbore cement platform.

The Company has developed a graphene-enhanced cement additive that incorporates Plaid’s graphene-layering technology directly into the cement blend, enabling the fortified cement to be handled, transported, and mixed in the same manner as conventional cement additives. As a result, Plaid has immediately begun transitioning away from its previous mechanical modification system toward this simplified, ready-to-blend approach.

Haydale has announced that it has completed the previously-reported acquisition of Intelligent Resource Management Limited (trading as SaveMoneyCutCarbon or "SMCC").

Haydale has confirmed that all conditions to completion have now been satisfied, including the associated fundraising (in which gross proceeds of approximately £5.75 million were raised), shareholder approvals and admissions of new shares. SMCC is now fully part of the Haydale Group.

Researchers from Huazhong University of Science and Technology have reported a self-aligned laser transfer (SALT) based on directional photothermal regulation strategies that enables high-precision, programmable transfer of microchips without the need of precise laser-to-die alignment. 

Schematic illustration of the stamp with TCGC: (i) Schematic of the self-aligned mechanism of TCGC. (ii) Conversion of an asymmetric light intensity input to an even heat output by TCGC. (iii) Composition of TCGC: the upper layer is graphene with ordered atomic arrangement and high phonon transport efficiency; the lower layer is amorphous carbon with disordered atomic structure and low phonon transport efficiency. (iv) Schematic of thermal homogenization by light absorption and directional heat conduction through TCGC. Image from: Light: Science & Applications

The key innovation lies in the introduction of a special photothermal conversion material - thermal conductivity gradient carbon (TCGC). The TCGC can be prepared using a UV excimer laser to induce confined, self-limited carbonization of polyimide (PI), which naturally creates a gradient distribution of graphitization degree, with graphene (Gr) layer at the top and amorphous carbon (AC) layer at the bottom. 

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Researchers at The University of Manchester, working with the UK’s National Physical Laboratory (NPL) and 15 international partners, have developed a new protocol, using transmission electron microscopy (TEM), which is meant to underpin a new ISO technical specification for graphene.

The results of the large interlaboratory selected area electron diffraction (SAED) comparison study, where the collaborating laboratories measured and analyzed nominally identical samples of chemical vapor deposited (CVD) graphene, were recently presented. Large variations were observed in the measured ratios of diffraction spot intensities, with the largest variance associated with poor quality SAED data resulting from poor specimen handling and storage. To inform the reliable determination of monolayer thickness from SAED patterns, the team provided a description of best practice for specimen handling, TEM operation, data collection and analysis. The results of this work have been directly incorporated into ISO/TS 21356-2 for the characterization of graphene sheets. 

Researchers from the University of Barcelona, Jaume I University, Slovak University of Technology and University of Valencia have realized graphene-enhanced hybrid photodetectors by integrating inkjet-printed mixed-phase CsPbBr₃/Cs₄PbBr₆ perovskite films directly onto graphene platforms. In this architecture, a high-mobility 2D graphene channel is intimately coupled to a photoconductive perovskite layer, enabling highly efficient photogating and broadband charge transport across the device.

The graphene channel serves as an ultrafast, low-noise pathway for photoinduced carriers, translating small changes in perovskite charge density into large modulations of graphene conductance. This strong photogating effect, together with the mixed-phase “raisin bread” perovskite morphology that confines and stores carriers, yields very high photoconductive gain. Furthermore, the use of chemical-vapor-deposition graphene and maskless inkjet printing allows direct perovskite deposition onto graphene without lithography on top of the 2D layer, preserving graphene quality and supporting integration on large-area and potentially flexible substrates.

Researchers from China's Northeastern University, Shenyang Jusheng New Material Technology, Key Laboratory of Medical Image Computing, Shenyang Aerospace University and Australia's University of New South Wales have developed a polyurea-based nanocomposite spray sensing coating reinforced with covalently functionalized graphene nanoplatelets, offering a scalable solution for structural health monitoring in demanding environments.

Preparation and Main Properties of Graphene NanoPlatelet-functionalized Polyurea Coatings.

Structural health monitoring (SHM) in harsh and complex conditions remains challenging, as conventional sensors often lack conformability, mechanical durability, and long-term stability. In their recent study, the team outlines a new approach - a spray-applied polyurea nanocomposite sensing coating that integrates functionalized graphene nanoplatelets to combine robust mechanical performance with reliable, real-time damage and strain monitoring for infrastructure and automotive structures.