Dear all, Sunil Bhave<https://engineering.purdue.edu/oxidemems/?_ga=2.69363280.1327244249.1582556062-1222462354.1553101516>, Associate Director of Operations for the Birck Nanotechnology Center and Professor of Electrical and Computer Engineering will present this week’s faculty seminar series, Thursday, 2/27 @ 12pm (lunch provided) in BRK 2001. The first half will be an overview of research and the remainder will be open for questions and high-level discussion of collaboration opportunities that can lead to future center of excellence and/or also brainstorm about a shared vision for Birck. Micromachining YIG Abstract: We have designed, fabricated and characterized magnetostatic wave (MSW) resonators by patterning single-crystal ytterbium iron garnet (YIG) films on a gadolinium gallium garnet (GGG) substrate and exciting them using loop-inductor transducers. We achieved this technology breakthrough by developing a YIG film etching process and fabricating thick Aluminum CPW inductor loop around each resonator to individually address and excite magnetostatic waves with high coupling efficiency. At 4.77GHz the 0.68mm2 resonator achieves a quality factor (Q) > 5000 with a bias field of 987Oe. We also demonstrate YIG resonator tuning by more than one octave from 3.63GHz to 7.63GHz by applying an in-plane external magnetic field. Our Purdue micromachining technology enables fabrication of multiple single and two-port YIG resonators on the same chip with all resonators demonstrating octave tunability and high Q. I will end the talk by showing our first measurement results of our next generation YIG-on-Insulator technology. The fabrication technique and measurement results are performed by my senior graduate student Sen Dai. Our group works very closely with BAE Systems. Bio: Sunil received the B.S. and Ph.D. degrees from Berkeley in EECS in 1998 and 2004 respectively. In April 2015, he joined the department of Electrical and Computer Engineering at Purdue University where he was recently promoted to Professor. Sunil received the NSF CAREER Award in 2007, the DARPA Young Faculty Award in 2008, the IEEE Ultrasonics Society’s Young Investigator Award in 2014 and the Google Faculty Research Award in 2020. His students have received Best Paper Awards at IEEE Photonics 2012, Ultrasonics 2009 and IEDM 2007. Sunil is a co-founder of Silicon Clocks which was acquired by Silicon Labs in April 2010. Before joining Purdue, Sunil was an associate professor at Cornell for 10 years. Please find below the BNC Spring Faculty Seminar Series schedule. Date Faculty Topic 1/30/2020 Ali Shakouri BNC Annex 2/6/2020 Allen Garner BioElectrica and ElectroPhysics 2/13/2020 Guang Lin Computational and predictive science and statistical learning both on algorithms and applications 2/20/2020 Lia Stanciu Design and fabrication of biosensors and chemical sensors 2/27/2020 Sunil Bhave Micromachining YIG 3/5/2020 Shriram Ramanathan Brain-inspired computing 3/12/2020 Dallas Morisette FinFET inspired silicon carbide power MOSFETs 3/19/20 Spring Break 3/26/20 Lunch with Dr. Moira Gunn Host of NPR’s Tech Nation and BioTech Nation Discovery Park Lecturer and Shark Tank Competition Judge 4/2/2020 Sophie Lelièvre 3D3C Cell Culture 4/9/2020 Jianguo Mei Challenges and Opportunities in R2R Manufacturing and Commercialization of Thin Film Electrochromics 4/16/2020 NanoDays 4/23/2020 Chi Hwan Lee Sticker-like Electronics (Sticktronics) for Wearable Health Monitoring 4/30/2020 Chen-Lung Hung Ultracold quantum gas and quantum optics 5/7/2020 Finals Week Thank you! Jaime Turner Lead Administrative Assistant to the Director | Birck Nanotechnology Center BRK | 1205 W State Street | West Lafayette, IN 47907 o: 765-494-3509<mailto:765-494-3509> | m: 765-491-3064<tel:7654913064> | jjturner@purdue.edu<mailto:jjturner@purdue.edu> [83324AA6]<https://www.purdue.edu/>
