Deep Jariwala / University of Pennsylvania, UTK/ORNL Visit (5,1-2)

1 May 2025, 07:55 → 2 May 2025, 19:45 US/Eastern

IAMM

Adrian Del Maestro (University of Tennessee, Knoxville)

Deep Jariwala is an Associate Professor and the Peter & Susanne Armstrong Distinguished Scholar in the Electrical and Systems Engineering as well as Materials Science and Engineering at the University of Pennsylvania (Penn). Deep completed his undergraduate degree in Metallurgical Engineering from the Indian Institute of Technology in Varanasi and his Ph.D. in Materials Science and Engineering at Northwestern University. Deep was a Resnick Prize Postdoctoral Fellow at Caltech before joining Penn to start his own research group. His research interests broadly lie at the intersection of new materials, surface science and solid-state devices for computing, opto-electronics and energy harvesting applications in addition to the development of correlated and functional imaging techniques. Deep’s research has been widely recognized with several awards from professional societies, funding bodies, industries as well as private foundations, the most notable ones being the Optica Adolph Lomb Medal, the Bell Labs Prize, the AVS Peter Mark Memorial Award, IEEE Photonics Society Young Investigator Award, IEEE Nanotechnology Council Young Investigator Award, IUPAP Early Career Scientist Prize in Semiconductors, the SPIE Early career achievement award and the Alfred P. Sloan Fellowship. He has published over 150 journal papers with more than 22000 citations and holds several patents. He serves as the Associate Editor for ACS Nano Letters and has been appointed as a Distinguished Lecturer for the IEEE Nanotechnology Council for 2025.

Website: jariwala.seas.upenn.edu 
Email: dmj@seas.upenn.edu

 

Thursday 1 May

08:00 → 08:45 Travel to Oak Ridge National Lab

Dr. Deep Jariwala will drive himself to ORNL.

Driving Directions & Maps: https://www.ornl.gov/content/maps-and-directions

09:00 → 09:30 ORNL Badging & Walk to 4100 Chemical & Materials Sciences Building

(Parking reserved on hill behind 4100)

Convener: Zac Ward

09:30 → 10:30 Quantum Heterostructures Group (Eres/Brahlek/Miao/Moore)

10:30 → 11:30 Correlated Electron Group (McGuire/Yan/May/Ortiz)

11:30 → 12:00 Intersect (Moore)

12:00 → 13:00 Lunch (Lawrie/Humble--cafeteria)

13:00 → 14:00 Microscopy (Li/Jesse--HTML and back to CNMS)

14:00 → 14:30 Transit to CNMS (Li guide)

14:30 → 15:15 Functional Hybrid Nanomaterials (Ward)

Speaker: Zac Ward (ORNL)

15:15 → 16:00 Nanofabrication Research Laboratory (Randolph)

16:00 → 16:45 Data NanoAnalystics (Vasudevan)

16:45 → 17:00 Wrap Up & Depart for Dinner

Drive to Seasons
11605 Parkside Dr.
Knoxville, TN 37934

Speaker: Zac Ward (ORNL)

17:45 → 19:30 Dinner

Speakers: Prof. Adrian Del Maestro (University of Tennessee, Knoxville), Zac Ward (ORNL)

Friday 2 May

08:00 → 08:15 Pick up at Cumberland House

Convener: Prof. Adrian Del Maestro (University of Tennessee, Knoxville)

08:15 → 09:00 Research Discussion

Speaker: Prof. Adrian Del Maestro (University of Tennessee, Knoxville)

09:00 → 09:45 Research Discussion

Speaker: Prof. Sergei Kalinin (UTK)

09:45 → 10:30 Research Discussion

Speaker: Ruixing Zhang (Department of Physics and Astronomy, University of Tennessee Knoxville)

10:30 → 11:15 Research Discussion

Speaker: Prof. Ahmedullah Aziz (UTK)

11:15 → 12:00 Research Discussion

Speaker: Prof. David Mandrus (UTK)

12:00 → 12:15 15-Minute Break

12:15 → 13:30 Lunch/Seminar: Low-Dimensional and Emerging Materials for Next-Generation Electronic and Photonic Devices

Deep Jariwala

Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA E-mail: dmj@seas.upenn.edu Website: jariwala.seas.upenn.edu

Modern computing faces significant challenges in the post-Moore's Law era, particularly as applications shift from arithmetic-centric to data-centric paradigms driven by artificial intelligence and ubiquitous connectivity. Silicon will likely remain dominant for the foreseeable future, but there's a pressing need for innovative materials and device architectures to complement silicon and enable more efficient, powerful, and versatile computing systems for both conventional and extreme environments.

In this talk, I will first discuss our research on two-dimensional (2D) chalcogenide semiconductors for next-generation electronics. These materials exhibit remarkable properties when integrated with silicon to create low-power tunneling field effect transistors, particularly using In-Se based semiconductors. I will highlight our achievements in phase-pure epitaxial thin-film growth at wafer scales, compatible with back-end-of-line processing in silicon fabs.

I will then present our work on integrating 2D materials with emerging ferroelectric nitride materials for advanced memory applications. Specifically, I will focus on how integrating 2D semiconductors with wurtzite structure ferroelectric nitrides, particularly aluminum scandium nitride (AlScN), creates high-performance ferroelectric field-effect transistors (FE-FETs). Our latest results demonstrate scaling of 2D/AlScN FE-FETs to achieve ultra-high carrier and current densities in ferroelectrically gated MoS₂. This section will also cover ferroelectric diode (FeD) memory devices with multi-bit operation and compute-in-memory capabilities. The exceptional temperature stability of AlScN FeDs, with stable operation up to 600°C and data retention up to 1000°C when integrated with SiC, as well as down to -261 °C makes these devices uniquely suited for extreme environment computing applications.

Finally, depending on how much time permits, I will explore how strong light-matter coupling in excitonic 2D semiconductors enables novel photonic devices. Transition metal dichalcogenides (TMDCs) of molybdenum and tungsten, with their visible spectrum bandgaps and strong excitonic absorption, serve as excellent platforms for investigating strong light-matter interactions and the formation of hybrid states. Our recent work demonstrates how multi-layer TMDCs coupled to reflective substrates achieve remarkable light trapping. I will extend this discussion to superlattices of excitonic chalcogenides, and metal-organic chalcogenolates, which offer unique opportunities to tailor light dispersion in the strong to ultra-strong coupling regime. I will discuss the physics of strong light-matter coupling and its applications in phase modulator devices, photovoltaic devices, and control of light in magnetic semiconductors as well as tuning of quantum emitters.

I will conclude by presenting a vision for how these technologies can converge to create novel information processing and sensing platforms that leverage the best aspects of electronics and photonics, highlighting the vast opportunities for 2D and related materials in the future of semiconductor electronics, photonics, and quantum technologies.

Zoom link: https://tennessee.zoom.us/j/93557498607?pwd=eUUzODFBYXV2TWNLTWxMdHFJRWZnQT09

Speaker: Deep Jariwala

Zoom link

13:30 → 14:00 Research Discussion

Speaker: Yishu Wang (University of Tennessee Knoxville)

14:00 → 14:15 15-Minute Break

14:15 → 15:00 Research Discussion

Speaker: Norman Mannella (UTK - Physics)

15:00 → 15:30 Research Discussion

Dr. Sholl will join via Zoom:

Speaker: Dr David Sholl (UT-ORII)

15:30 → 16:15 Research Discussion

Speaker: Joon Sue Lee (University of Tennessee, Knoxville)

16:15 → 16:45 Research Discussion

Speaker: Wonhee Ko (University of Tennessee, Knoxville)

16:45 → 17:00 Wrap Up & Return to Hotel

Dr. Jariwala departs Saturday morning.

Speaker: Prof. Adrian Del Maestro (University of Tennessee, Knoxville)

17:45 → 19:45 Dinner at Chesepeakes

https://chesapeakes.com/locations/downtown/

Speakers: Ahmedullah Aziz, Sergei Kalinin