25 September 2015
COBRA COLLOQUIUM: Friday September 25, 2015 at 15:30 – 16:30 in Film Theater De Zwarte Doos.
Speaker: Dr. Aaron D. Franklin, Associate professor at Duke University, Department of
Electrical & Computer Engineering and Department of Chemistry, USA
Title: What Role Will Nanomaterials Play in Electronics?
Abstract: Research into the many exciting possible applications of nanomaterials has exploded over the past twenty years. One of the foremost areas of interest is electronics, specifically the digital integrated circuit that drives all forms of modern technology. While consumers continue to see a world of ever-improving technological gadgets, the underlying hardware has run into on many ominous challenges. Moore’s Law, the well-known marching orders of increased transistor count every generation of integrated circuit technology, has struggled and, according to some, died. Between the foreboding scalability challenges of silicon transistors to the increasing difficulty of lowering RC delays in the shrinking interconnect vias, there never was a time when innovation was needed more for the semiconductor industry. Many researchers have proposed that nanomaterials can provide remedies for the woes of silicon-based technology. From carbon nanotubes (CNTs) to graphene to transition metal dichalcogenides (TMDs), the list of options and their purported saving potential will be reviewed in this talk. For instance, specific motivations for pursuing a CNT transistor technology for high-performance digital computing beyond the 7 nm technology node will be given; these include the demonstrated scalability of the channel length to sub-10 nm, operation at low supply voltage, and gate-all-around configuration achieved using atomic layer deposition. The remaining obstacles to realizing a CNT transistor technology, including the material purification and placement, will then be considered along with the latest developments toward overcoming each obstacle. Other nanomaterials will be reviewed that are also under consideration for employment as the channel material for digital transistors, including TMDs. The TMD films have become especially popular due to their true 2D structure combined with an intrinsic band gap—the envy of their counterpart, graphene. Recent advances on the utilization of these nanomaterials will be considered and compared to the CNT option. Finally, a brief review of how these nanomaterials could impact other aspects of the integrated circuit will be considered, including their ability to usher in a completely new form factor for computing. Will we ever see the end of silicon computing? Will nanomaterials be the ones to save the day? Will the only future for nanoelectronics be one that is orthogonal to silicon? While definite answers to these questions are out of reach, this talk will provide helpful information for considering them.
Biography: Dr. Aaron Franklin received his Ph.D. in Electrical Engineering from Purdue University in 2008 and then spent six years on the research staff at the IBM T. J. Watson Research Center in Yorktown Heights, NY. He is most widely known for his work on low-dimensional nanoelectronics with specific emphasis on carbon nanotube (CNT) transistors, including device scaling, transport studies, and advanced integration approaches. While at IBM, Dr. Franklin was involved in many other projects with applications including photovoltaics, thin-film transistors, and supercapacitors. Dr. Franklin joined the Duke faculty in 2014 and now leads the Laboratory of Electronics from Nanomaterials, which has two research thrusts: 1) nanomaterials in high-performance nanoelectronic devices and 2) nanomaterial inks for low-cost printed electronics.
After the colloquium (around 16:30) we organize a mini-colloquium in which two COBRA researchers, will give a short presentation about his or her work.
For the Photonics and Semiconductor Nanophysics Group:
Speaker: Dick van Dam Title: Nanowire solar cells
For the Photonic Integration Group:
Speaker: Yuqing Jiao Title: InP membrane lasers on silicon
The audience is invited to an informal gathering following the colloquium (around 17:00) in the lounge of Film Theater De Zwarte Doos.