Cristian Cassella

Assistant Professor,  Electrical and Computer Engineering



  • 422 ISEC
  • 617.373.7509

Research Focus

Acoustic resonators, nonreciprocal components, zero-power sensors for IoT, nonlinear dynamics, ultrasonic transducers


  • PhD, Carnegie Mellon University, 2015

Honors & Awards

  • National Science Foundation CAREER Award
  • Marie Skłodowska-Curie Individual Fellowship

Research Overview

Acoustic resonators, nonreciprocal components, zero-power sensors for IoT, nonlinear dynamics, ultrasonic transducers

Microsystems Radio Frequency Laboratory

Our goal is to explore unveiled fundamental physics, in micro and nano devices, to surpass the performance limitations of currently available communication and sensing systems.

Microsystems Radio Frequency Laboratory

Department Research Areas

Selected Publications

  • H.M.E. Hussein, M. Rinaldi, M. Onabajo, C. Cassella, A chip-less and battery-less subharmonic tag for wireless sensing with parametrically enhanced sensitivity and dynamic range. Sci Rep 11, 3782 (2021).
  • X. Zhao, L. Colombo, Cristian Cassella, Aluminum Nitride Two-Dimensional-Resonant-Rods, Applied Physics Letters, 116(14), 2020, 143504
  • H.M. Hussein, M.A. Ibrahim, G. Michetti, M. Rinaldi, M. Onabajo, C. Cassella, Systematic Synthesis and Design of Ultra-Low Threshold 2:1 Parametric Frequency Dividers, IEEE Microwave Theory and Techniques, 2020
  • C. Cassella, J. Segovia-Fernandez, High K2⁄t Exceeding 6.4% Through Metal Frames in Aluminum Nitride 2-D Mode Resonators, IEEE transactions on Ultrasonics, Ferroelectrics, and Frequency Control 66(5), 2019, 958-964
  • J.M. Puder, J.S. Pulskamp, R.R. Rudy, C. Cassella, M. Rinaldi, G. Chen, S. Bhave, R.G. Polcawich Rapid Harmonic Analysis of Piezoelectric MEMS Resonators, IEEE Transactions on Ultrasonic Ferroelectrics, and Frequency Control, 6(65), 2018, 979-990
  • G. Chen, C. Cassella, T. Wu, M. Rinaldi, Single-Chip Multi-Frequency Wideband Filters Based on Aluminum Nitride Cross-Sectional Lamé Mode Resonators with Thick and Apodized Electrodes, IEEE Micro Electro Mechanical Systems, 2018, 775-778


May 18, 2023

Casilli Wins Best Paper Award at IFCS-EFTF 2023

Electrical engineering student Nicolas Casilli’s, E’21, MS’21, PhD’26, was awarded the best paper award at the IEEE International Frequency Control Symposium and the European Frequency and Time Forum (IEEE IFCS-EFTF 2023) for his paper “An Ising Tag with a LiNbO3 Resonator for Temperature Threshold Sensing.” Casilli is advised by ECE Assistant Professor Cristian Cassella. Related […]


May 10, 2023

Casilli Nominated as Finalist in IFCS-EFTF 2023 Best Student Paper Competition

On May 17, electrical engineering student Nicolas Casilli, E’21, MS’21, PhD’26, will present his paper “An Ising Tag with a LiNbO3 Resonator for Temperature Threshold Sensing” as an invited speaker at IEEE IFCS-EFTF 2023.


May 01, 2023

Casilli to Present at International Microwave Symposium

Electrical engineering student Nicolas Casilli’s, E’21, MS’21, PhD’26, paper on “A UHF 1.3 cm 2 Passive Subharmonic Tag With a 13 m Read-Range” was accepted as one of the top-50 papers at the prestigious IEEE International Microwave Symposium IMS conference in San Diego. The paper will be presented during the Integrated RFID Systems and Applications […]


Apr 18, 2023

ECE PhD Student Awarded National Defense Science and Engineering Graduate Research Fellowship

PhD student Jack Guida, electrical engineering, advised by Assistant Professor Siddharta Ghosh, was awarded a National Defense Science and Engineering Graduate Research Fellowship. He is researching microscale acoustics and integrated photonics as part of the Northeastern SMART research center.


Mar 02, 2023

Enhancing Communication and Sensing at Terahertz Frequencies with Programmable Electromagnetic Surfaces

ECE Associate Professor Josep Jornet (PI), Assistant Professor Cristian Casella, Assistant Professor Ben Davaji, and Associate Research Scientist for the Institute for the Wireless Internet of Things Vitaly Petrov were awarded a $500K AFOSR grant titled “Programmable Electromagnetic Surfaces Based on Ferroelectric and Antiferroelectric Hafnium Zirconium Oxide Films and Graphene for Terahertz Communications and Sensing.”


Feb 14, 2023

$4 Million DARPA Grant for Ultra-Small, Fast, High-Resolution Infrared Sensors

Matteo Rinaldi, professor of electrical and computer engineering (ECE), and director of the Northeastern SMART research center, is leading a $4 million DARPA grant under the DARPA Optomechanical Thermal Imaging (OpTIm) program.

Cristian Cassella


Dec 08, 2022

Developing Better Methods to Monitor Food Storage Temperatures

ECE Assistant Professor Cristian Cassella is developing nano and micro communication devices to monitor cold food storage temperatures.


Sep 20, 2022

Northeastern in Top 100 Universities with U.S. Utility Patents

For the seventh consecutive year, Northeastern University has appeared in the National Academy of Inventors (NAI) list of Top 100 Universities that were granted U.S. utility patents in 2021, cementing it as a world leader in academia and research.

Marvin Onabajo, Miriam Leeser, Cristian Cassella


Sep 09, 2022

Designing Self-Adaptive Next Generation RF Receivers for Heavily Crowded Electromagnetic Environments

ECE Associate Professor Marvin Onabajo, Professor Miriam Leeser, and Assistant Professor Cristian Cassella were awarded a $750K NSF grant for “Advancing Coexistence through a Cross-Layer Design Platform with an Adaptive Frequency-Selective Radio Front-End and Digital Algorithms.” The research lays the groundwork for enhanced radio frequency communication systems that make use of real-time tuning to adapt to different spectrum environments for higher interference tolerance, and to provide design techniques and tools that improve the coexistence of wireless devices.

Cristian Cassella


Aug 12, 2022

Using Subharmonic Tags to Sense and Navigate

ECE Assistant Professor Cristian Cassella, in collaboration with Rogers Corporation, received a grant for $148K for “Subharmonic Tags on Magneto-Dielectric Substrates.”

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