Hamed Alemansour

Title: Hamed Alemansour: Innovator in Scanning Tunneling Microscopy

Introduction

Hamed Alemansour is a notable inventor based in Richardson, TX (US). He has made significant contributions to the field of scanning tunneling microscopy, particularly in the development of methods and devices that enhance the functionality of these sophisticated instruments. With a total of 2 patents, Alemansour's work is paving the way for advancements in atomic-scale device fabrication.

Latest Patents

Alemansour's latest patents focus on innovative methods and devices configured to operate scanning tunneling microscopes using out-of-bandwidth frequency components added to bias voltage. In these patents, he describes a system where an ultrahigh vacuum (UHV) scanning tunneling microscope (STM) tip selectively desorbs hydrogen atoms from the Si(100)-2X1:H surface by injecting electrons at a negative sample bias voltage. This new lithography method allows the STM to operate under imaging conditions while simultaneously desorbing hydrogen atoms as required. By adding a high-frequency signal to the negative sample bias voltage, the required energy for hydrogen removal is delivered effectively. The resulting current at this frequency and its harmonics are filtered to minimize their impact on the STM's feedback loop. This approach offers significant potential for the controlled and precise removal of hydrogen atoms from a hydrogen-terminated silicon surface, which may be instrumental in the fabrication of practical silicon-based atomic-scale devices.

Career Highlights

Alemansour is affiliated with the University of Texas System, where he continues to push the boundaries of research in scanning tunneling microscopy. His work is characterized by a commitment to innovation and excellence, contributing to the advancement of technology in his field.

Collaborations

Alemansour collaborates with Seyed Omid Reza Moheimani, further enhancing the research and development efforts in their shared area of expertise.

Conclusion

Hamed Alemansour is a distinguished inventor whose work in scanning tunneling microscopy is making a significant impact on the field. His innovative patents and collaborations are setting the stage for future advancements in atomic-scale device fabrication.