The EU-funded L2D2 project is advancing the frontier of laser-enabled manufacturing for graphene and related two-dimensional (2D) materials, bridging the gap between laboratory research and industrial-scale applications. Two recent publications by L2D2 partners highlight major progress in this field, underscoring the transformative potential of laser-based techniques in shaping the future of electronics, sensing, and photonics.

Background: Why 2D Materials Matter

Graphene and other 2D materials—such as transition metal dichalcogenides (TMDs) and hexagonal boron nitride—have attracted enormous interest over the past decade. Their atomically thin structure gives rise to extraordinary properties:

• Electrical conductivity far superior to copper.
• Mechanical strength stronger than steel yet flexible.
• Optical transparency combined with tunable electronic band structures.

These characteristics make 2D materials ideal candidates for next-generation technologies, from ultra-fast transistors and flexible displays to biosensors and quantum devices. However, a persistent challenge has been how to integrate these delicate crystals into practical devices without damaging their properties or introducing defects. Traditional transfer methods often involve chemical etching or manual handling, which can contaminate or misalign the material. This is where laser-enabled approaches come into play.

Precision Placement with Laser Digital Transfer

In the journal 2D Materials, researchers report on laser digital transfer (LDT), a technique that enables the precise placement of graphene and other 2D crystals onto electronic and photonic platforms. Unlike conventional transfer methods, LDT preserves the pristine properties of these atomically thin materials while offering micron-scale accuracy and compatibility with semiconductor processing.

Image: Laser transfer of 2D material to substrate. From Cheliotis et al, Small 2025.

The study demonstrates how substrate chemistry and laser parameters can be tuned to achieve defect-free integration, paving the way for scalable device fabrication. This is particularly important for industrial adoption, as semiconductor manufacturing demands reproducibility, cleanliness, and compatibility with existing workflows. LDT’s ability to meet these requirements positions it as a promising route toward mass production of 2D-material-based devices.

Building Functional Devices with Laser-Based Approaches

Complementing this, an article in Small showcases how laser-based approaches can be harnessed to build functional devices, including sensors and optoelectronic components. By controlling the morphology and positioning of 2D materials, the team demonstrates flexible and miniaturized systems capable of:

• Detecting chemical and biological signals with high sensitivity.
• Manipulating light at the nanoscale for advanced photonic circuits.
• Enabling wearable sensors and biomedical diagnostics.

These advances highlight the versatility of laser-induced processes in enabling next-generation technologies. For example, a graphene-based biosensor fabricated with laser precision could detect biomarkers in real time, opening new possibilities in personalized medicine. Similarly, laser-patterned photonic circuits could reduce energy consumption in data centers by guiding light more efficiently than traditional silicon-based systems.

The Broader Mission of L2D2

Together, these works exemplify the mission of the L2D2 project: to establish laser-based digital manufacturing as a scalable, cost-effective route for integrating 2D materials into real-world technologies. By combining precision, adaptability, and industrial compatibility, L2D2 is laying the foundation for a new era of electronics, sensing, and photonics powered by graphene and beyond.

The project also reflects a broader European strategy to strengthen advanced manufacturing capabilities and maintain leadership in emerging technologies. By investing in laser-enabled processes, the EU is positioning itself at the forefront of the global race to commercialize 2D materials. If successful, the outcomes of L2D2 could accelerate innovation across multiple sectors, from healthcare and energy to telecommunications and consumer electronics.