Researchers Created Flexible Paper Electronics With Lasers
A new laser-writing process enables sustainable, durable circuits directly on kraft paper.
Updated on Oct. 9, 2026 in Materials Science
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Researchers have developed a method to produce flexible electronics using lignin-rich kraft paper and direct laser writing. This technique allows for the creation of functional components like photodetectors and transducers on a sustainable, paper-based platform.
Why it matters
This research provides a pathway toward low-cost and scalable production of eco-friendly electronics. By utilizing abundant materials, the method seeks to address the growing need for sustainable manufacturing in the electronics industry.
The porous electrodes feature a sheet resistance of 147 ± 5 Ω sq and a thickness of 43 µm. They maintain performance after 1000 bending or stretching cycles, achieved via a 355 nm UV pulsed laser.
The details
The process uses direct laser writing—a method that uses a focused laser beam to pattern conductive material directly onto a substrate—to carbonize specific regions of lignin-rich kraft paper into graphene. This creates laser-induced graphene, a conductive carbon structure, with an ablation depth of 20-30 µm. The fabrication is additive-free and performed in ambient conditions, requiring no chemical solvents or complex cleanup processes.
Timeline
October 9, 2026: The research was published.
The Tech Race
This research contributes to the broader effort to replace non-biodegradable components in electronics with sustainable materials. It follows a trajectory toward additive-free fabrication that challenges current high-energy lithographic manufacturing standards.
While currently a research-stage technique, this method could enable low-cost, disposable sensors and flexible consumer devices. Widespread adoption depends on future advancements in scaling the ambient-condition laser patterning process to industrial volumes.
The takeaway
This study demonstrates that paper-based substrates can support robust electronic circuits without additive manufacturing. Future research should watch for efforts to integrate these porous electrodes into commercially available flexible sensor arrays.
Further reading
For more on the current state of sustainable hardware, see the latest updates in Materials Science.
More information
Read the full peer-reviewed research article to explore the technical benchmarks.
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