Scientists Revisit 19th-Century Experiments with Modern Tools, Discover Potential Graphene byproducts.
Recently published research suggests that Thomas Edison may have unintentionally created graphene as a byproduct of his experiments on incandescent bulbs in the late 19th century. Researchers at Rice University, led by chemist James Tour, replicated one of Edison's seminal experiments using modern tools and discovered a surprising material: turbostratic graphene.
To reproduce what Edison did, with our current knowledge and equipment, is exciting, said Tour. The discovery inspires curiosity about other information hidden in historical experiments. What questions would Edison have asked if he joined us in the lab today? What answers can we get when revisiting his work through a modern lens?
Edison's light bulb experiment involved using carbon-based filaments to achieve high temperatures required for flash Joule heating, which is an effective method for producing graphene. Researchers Lucas Eddy and Tour recreated Edison's experiment, attaching light bulbs to a 110-volt power source and rapidly heating the filament to between 2000-3000 degrees Celsius.
Using modern optical microscopes, they observed distinct layers of turbostratic graphene within the carbon filament before it turned into graphite. However, the researchers acknowledge that this is not definitive proof that Edison produced graphene. Even if he had been aware of its existence, detecting it would have been impossible with the technology available at the time.
The study highlights the potential for innovation to emerge from reinterpreting historical technologies using modern tools and new questions. "Innovation can emerge from reinterpreting the past with fresh tools and new questions," they wrote. "In the case of 'Edison graphene,' a 140-year-old invention continues to shed light not just literally but scientifically."
The researchers believe that other early technologies, such as vacuum tubes, arc lamps, and early X-ray tubes, may have also accidentally produced unusual materials or reactions that weren't analyzed or noticed at the time. This study demonstrates the importance of revisiting historical experiments with modern tools and techniques to uncover new insights and potential discoveries.
Recently published research suggests that Thomas Edison may have unintentionally created graphene as a byproduct of his experiments on incandescent bulbs in the late 19th century. Researchers at Rice University, led by chemist James Tour, replicated one of Edison's seminal experiments using modern tools and discovered a surprising material: turbostratic graphene.
To reproduce what Edison did, with our current knowledge and equipment, is exciting, said Tour. The discovery inspires curiosity about other information hidden in historical experiments. What questions would Edison have asked if he joined us in the lab today? What answers can we get when revisiting his work through a modern lens?
Edison's light bulb experiment involved using carbon-based filaments to achieve high temperatures required for flash Joule heating, which is an effective method for producing graphene. Researchers Lucas Eddy and Tour recreated Edison's experiment, attaching light bulbs to a 110-volt power source and rapidly heating the filament to between 2000-3000 degrees Celsius.
Using modern optical microscopes, they observed distinct layers of turbostratic graphene within the carbon filament before it turned into graphite. However, the researchers acknowledge that this is not definitive proof that Edison produced graphene. Even if he had been aware of its existence, detecting it would have been impossible with the technology available at the time.
The study highlights the potential for innovation to emerge from reinterpreting historical technologies using modern tools and new questions. "Innovation can emerge from reinterpreting the past with fresh tools and new questions," they wrote. "In the case of 'Edison graphene,' a 140-year-old invention continues to shed light not just literally but scientifically."
The researchers believe that other early technologies, such as vacuum tubes, arc lamps, and early X-ray tubes, may have also accidentally produced unusual materials or reactions that weren't analyzed or noticed at the time. This study demonstrates the importance of revisiting historical experiments with modern tools and techniques to uncover new insights and potential discoveries.