[1] He has contributed to the field of nanoscience and nanotechnology through his work in nanoengineered cancer therapeutics, nanocomposite-based display and lighting technologies, high efficiency nanocomposite photovoltaics and thermo/piezo-electric generators.

As a postdoctoral associate for Professor Dawn Bonnell at the University of Pennsylvania (Philadelphia), Carroll worked on the application of scanning probes to size and dimension related phenomena in oxide supported metal nanoclusters.

[3][4][5] Carroll's research contributions have been in the areas of: Growth and assembly of novel nanostructures, Optics of nanostructures and Nano-photonics, Quantum-functional properties of nanophase blends, Organic material nanocomposite devices and technologies including organic photovoltaics, lighting systems, and IR sensors, Biomedical-nanotechnology including smart therapeutics, hyperthermia approaches to Cancer, advanced/responsive tissue scaffolding technology, and biological-technology signal transduction.

With this move the research team expanded its work into biomedical nanotechnologies and continued to push the state-of-the-art in performance of organic electronics, announcing the development of highly efficient lighting devices based on field activation of polymers (FIPELs) and fabrics that generate power from body heat in recent years.

He has appeared on numerous television and radio programs including the History Channel, CNN, NPR, BBC, and CNBC as well as in newspapers and popular magazines around the world.