There isn't a single inventor credited with the discovery of carbon nanofibers. Their development was a gradual process involving contributions from several researchers and scientists over a period of time.

Here's a breakdown of key contributions:

* Early stages (1950s-1970s): Researchers like Robert Bacon and Roger Bacon at the General Electric Company observed and produced early forms of carbon nanofibers during their work on high-temperature carbon materials.

* Further development (1980s-1990s): Scientists like Harold Kroto, Richard Smalley, and Robert Curl made significant contributions to understanding the structure and properties of carbon nanomaterials, including nanotubes.

* Modern applications (1990s-present): The advent of advanced characterization techniques and controlled synthesis methods enabled researchers to develop more sophisticated carbon nanofiber production techniques and explore their applications in fields like energy storage, composites, and electronics.

Therefore, no single individual can be credited with the invention of carbon nanofibers. Their emergence was the result of the collective effort of numerous researchers and scientists over several decades.