The world of 2D materials research is an exciting frontier, but it's not without its challenges. In this article, we'll delve into the reproducibility gap that's slowing down the progress of these innovative materials and explore the efforts being made to bridge that gap.
The Promise of 2D Materials
Graphene, a single layer of carbon atoms, has been the poster child for 2D materials since its discovery in 2004. Its exceptional strength and conductivity, among other remarkable properties, have sparked a wave of research into other 2D materials like hexagonal boron nitride and molybdenum disulfide. These materials hold the potential to revolutionize electronics and various other applications.
The Reproducibility Challenge
However, working with 2D materials is a delicate dance. Even minor variations in lab conditions can significantly impact their properties. Researchers often find that replicating results from another lab is an uphill battle. This reproducibility gap is a major hurdle, slowing down the translation of these materials into practical applications.
Peter Bøggild, a researcher at the Technical University of Denmark, puts it bluntly: "We can't say we're working seriously on tech transfer if we're not doing proper work on reporting and transparency."
Closing the Gap: A Collaborative Effort
Bøggild and a group of experts from academia, industry, and funding bodies have come together to address this issue. They've developed practical guidelines aimed at improving reproducibility. Their proposal includes a standardized template for experimental procedures (STEP), which goes beyond the usual methods section in academic papers. It encourages researchers to provide extensive details about every step of their experiments, including common problems and troubleshooting techniques.
Ediz Herkert, a postdoc researcher at the Institute of Photonic Sciences, believes these guidelines could be a game-changer: "It should feel like you have an experienced postdoc guiding you step by step."
Implications for Technology Transfer
Amaia Zurutuza, scientific director at Graphenea, highlights the importance of reproducibility for industry adoption: "These materials are complicated. If we don't have reproducibility, it becomes even more so."
The vulnerability of 2D materials to contamination is a key challenge. Every atom is exposed, making them susceptible to external influences. As Bøggild puts it, "It's inherently tricky to work with stuff that is open and cannot easily be protected."
The STEP Method and Its Benefits
The STEP method aims to capture the tacit knowledge that researchers often share informally. By documenting the 'dirt and difficulties' of experimental procedures, researchers can improve transparency and reproducibility. Herkert and his colleague, Jaime Díez Mérida, are already implementing STEP at ICFO and believe it has immediate benefits for researchers, helping them focus on critical elements and identify areas for improvement.
The Reproducibility Charter (ReChart)
In addition to STEP, Bøggild and his colleagues propose the Reproducibility Charter (ReChart). This initiative aims to make reproducibility goals more prominent in funding proposals and published papers. It could encourage funders to allocate grant money specifically for creating STEP protocols and publishers to establish requirements for reproducibility reporting.
Anders Smith, a funding manager at the Villum Foundation, supports this approach: "We worry about whether it's too difficult to get funding for reproducibility. So we tell our grantees they are welcome to use part of their grant on such activities."
Moving Forward
While the principles of the expert recommendations are widely agreed upon, the challenge lies in implementation. Bøggild believes a collective effort is needed: "Maybe it just needs a little push from me and 1,000 other people. Even a small shift could matter a lot."
Herkert highlights the potential broader impact of these initiatives: "The strength of this protocol is that it's not limited to 2D materials. It's a template that can be useful in many fields, especially those involving nanofabrication and clean room work."
In conclusion, while 2D materials research faces challenges, the efforts to improve reproducibility offer a promising path forward. By focusing on transparency and collaboration, researchers can unlock the full potential of these revolutionary materials.
