Ahmad Abbas

Title: Innovations of Ahmad Abbas in Gas Sensing Technology

Introduction

Ahmad Abbas is an accomplished inventor based in Los Angeles, CA. He has made significant contributions to the field of gas sensing technology, particularly through his innovative work on black phosphorus gas sensors. His research has the potential to impact various applications in chemical, gas, and bio-sensing.

Latest Patents

Ahmad Abbas holds a patent for a black phosphorus gas sensor. This invention demonstrates the NO gas sensing performance of multilayer black phosphorus (BP) field effect transistors. The BP sensors exhibit sensitivity to NO concentration down to 5 ppb, making them comparable in sensitivity to the best 2D material-based sensors. Raman spectroscopy comparisons revealed no apparent change in the spectra before and after exposure to NO, indicating that thick BP flakes maintain their relative stability after sensing. The sensing performance of the BP device aligns well with the Langmuir Isotherm for molecules adsorbed on a surface, confirming charge transfer as the dominant mechanism for sensing. The systematic increase in conductance with rising NO concentrations suggests that NO molecules withdraw electrons and dope BP flakes with holes. These findings lay the groundwork for BP to be applied in various sensing applications.

Career Highlights

Ahmad Abbas is affiliated with the University of Southern California, where he continues to advance his research in gas sensing technologies. His work has garnered attention for its innovative approach and practical applications in the field.

Collaborations

Ahmad collaborates with Chongwu Zhou, contributing to the development and enhancement of gas sensing technologies.

Conclusion

Ahmad Abbas's innovative work in black phosphorus gas sensors showcases his expertise and commitment to advancing sensing technology. His contributions have the potential to revolutionize various applications in the field.