NER: Room-Temperature Single-Electron Transistors With Metallic Colloidal Nanoparticles

University Of Texas At Austin, Austin TX

Investigators

Abstract

This objective of this research is to develop a highly exploratory non-lithographic approach to fabricate room-temperature single-electron transistors based on chemically synthesized metallic nanoparticles of controllable sizes and shapes. The approach is based on controlled manipulation and assembly of colloidal nanoparticles assisted by a nonuniform electric field. The proposed approach is unique in that the nanoparticles are used to form not only the central conducting islands which allow room-temperature operation, but also metallic interconnects to connect the central islands to conventional structures without the need of high-resolution lithography. The approach also allows for the fabrication of suspended single-electron transistor structure, which may address the problem of random background charges. Broader Impacts: The proposed work could lead to true breakthroughs in the fabrication technology of practical single-electron devices, which are identified in the International Technology Roadmap for Semiconductors as possible alternatives to metal-oxide-semiconductors field-effect transistors, which will soon run into fundamental physical scaling limits, for future memory and logic applications. The project will also provide the students with excellent research and educational opportunities in nanoscience and nanotechnology. The highly interdisciplinary nature of the research will result in broad training of students. The research project is well suited for undergraduate students at all levels to participate. Particular effort will be made to involve minority students.