2024:

April 2024: The paper: X. Zhao, J.M. De Ponti, T. Maggioli, M. Colangelo, R. Craster, and C. Cassella, “TOPOLOGICALLY PROTECTED FANO RESONANCE IN A 80 MHZ SC-DOPED ALN THIN FILM RESONATOR WITH A QUALITY FACTOR LARGER THAN 10K”, has beenaccepted for publication at the Hilton Head 2024 Solid-State Sensors, Actuators & Microsystems Workshop (HH 2024) for Late News!

April 2024: The paper: H. M. E. Hussein, F. B. Ayed, A. Venditti, P. Simeoni, C. Cassella, M. Rinaldi, “A PARAMETRIC FREQUENCY COMB GENERATOR IMPROVING BY 10X THE LIMIT-OF-DETECTION OF 120 MHZ ALSCN-BASED IR DETECTORS”, has beenaccepted for publication at the Hilton Head 2024 Solid-State Sensors, Actuators & Microsystems Workshop (HH 2024)!

April 2024: The paper: T. Maggioli, X. Zhao, C. Cassella, M. Colangelo, “Detection of sub-threshold events in a superconducting nanowire using an acoustic resonator”, has been accepted for publication in the Applied Superconductivity Conference (ASC 2024)

April 2024: The paper: S. Quaresima, G.Giribaldi, V. Petrov, J. Jornet, B. Davaji, L. Colombo, M. Rinaldi, C. Cassella, “On-chip mmWave Antennas on a Piezoelectric ScAlN-Si Platform for 6G-grade Internet of Things”, has been accepted in the technical programat the 2024 IEEE International Symposium on Antennas and Propagation (IEEE APS/URSI 2024)

April 2024: The paper: N. Casilli, T. Kaisar, L. Colombo, S. Ghosh, P. X.-L. Feng, and C. Cassella, “Parametric Frequency Divider based Ising Machines”, has been publishedin Physical Review Letters.

March 2024: The paper: H. M. E. Hussein, S. Kim, M. Rinaldi, A. Alu, and C. Cassella, “Passive frequency comb generation at radiofrequency for ranging applications”, has been accepted for publication in nature communications.

February 2024: The paper: H. M. E. Hussein, F. B. Ayed, A. Venditti, P. Simeoni, C. Cassella, M. Rinaldi, “A PARAMETRIC FREQUENCY COMB GENERATOR IMPROVING BY 10X THE LIMIT-OF-DETECTION OF 120 MHZ ALSCN-BASED IR DETECTORS”, has been accepted for publication at the Hilton Head 2024 Solid-State Sensors, Actuators & Microsystems Workshop (HH 2024).

February 2024: Xuanyi Zhao has passed his PhD Thesis Defense!
Special thanks to Dr. Jeronimo Segovia-Fernandez and Prof. Matteo Rinaldi

January 2024: The paper: O. Kaya, L. Colombo, P. Simeoni, B. Davaji, and C. Cassella,  “A Radiofrequency Threshold Temperature Sensor Using a Hf_0.5Zr_0.5O₂ Device and a Microacoustic Piezoelectric Resonant Sensor”, has been accepted for publication in IEEE Journal of Microelectromechanical Systems.

2023:

October 2023: The paper: H. M. E. Hussein, O. M. O. Abdalla, P. Simeoni, L. Colombo, A. Corigliano, M. Rinaldi, and C. Cassella, “Far-Field Acoustic Sensing via pMUT-Based Subharmonic Tags: A Battery-Free Approach for Hybrid RF-Ultrasound Wireless Sensor Networks”, has been accepted for publication at the 37th International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2024).

October 2023: Cristian Cassella, and Xuanyi Zhao were awarded a patent for “Two dimensional rod resonator for RF filtering”.

September 2023: Cristian Cassella, Matteo Rinaldi, and Hussein Hussein were awarded a patent for “Subharmonic tags for remote continuous and threshold sensing”.

July 2023: The paper: H. M. E. Hussein and C. Cassella, “Utilization of SAW Resonators to Enable Identification Capabilities in Subharmonic Tags” has been accepted in IEEE Internet of Things Journal.

May 2023: The paper: N. Casilli, H. Hussein, T. Kaisar, R. Tetro, L. Colombo, P. X.-L. Feng, and C. Cassella,  “An Ising Tag with a LiNbO₃ Resonator for Temperature Threshold Sensing”, won the Best Student Paper Award at the 2023 Joint Conference of the European Frequency & Time Forum and the IEEE International Frequency Control Symposium (EFTF-IFCS 2023)! (News-Link-NU-ECE)

April 2023: The paper: N. Casilli, L. Colombo, and C. Cassella,  “A UHF 1.3 cm² Passive Subharmonic Tag with a 13 meters Read-Range”, has been accepted for publication in IEEE Microwave and Wireless Technology Letters, (Selected for special Issue on IMS 2023)

April 2023: Hussein M. E. Hussein has passed his PhD Thesis Defense!
Special thanks to Prof. Andrea Alù, Prof. Marvin Onabajo and Prof. Matteo Rinaldi

March 2023: The paper: N. Casilli, H. Hussein, T. Kaisar, R. Tetro, L. Colombo, P. X.-L. Feng, and C. Cassella,  “An Ising Tag with a LiNbO₃ Resonator for Temperature Threshold Sensing”, has been accepted as an invited lecture and nominated a finalist for the Best Student Paper Competition at the Joint Conference of the IEEE International Frequency Control Symposium and the European Frequency and Time Forum in Toyama, Japan (IFCS 2023).

March 2023: MicronRF laboratory is awarded an AFOSR grant titled “Programmable Electromagnetic Surfaces Based on Ferroelectric and Antiferroelectric Hafnium Zirconium Oxide Films and Graphene for Terahertz Communications and Sensing”. To know more, check our research proposal at: link

February 2023: MicronRF laboratory is awarded a DARPA grant under the DARPA Optomechanical Thermal Imaging (OpTIm) program. The project will focus on the development of Nano-opto-mechanical Piezoelectric Resonant Infrared-sensitive Metamaterials for Quantum-Limited Photodetection. The team aims to demonstrate an ultra-small (100 μm2) spectrally selective Infrared detector pixel with two orders of magnitude higher resolution and speed than any state-of-the-art technology. To know more, check our research proposal at: link

February 2023: The paper: N. Casilli, L. Colombo, and C. Cassella,  “A UHF 1.3 cm Passive Subharmonic Tag with a 13 meters Read-Range”, has been accepted as a Top 50 submission at the IEEE International Microwave Symposium in San Diego, California (IMS 2023).

February 2023: The paper: X. Zhao, O. Kaya, M. Pirro, P Simeoni, J. Segovia, and C. Cassella,  “Extending the Linearity of AlScN Contour-Mode-Resonators through Acoustic Metamaterials-based Reflectors“, has been accepted for publication in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (Spotlight), DOI: 10.1109/TUFFC.2023.3245809.

2022:

December 2022: The paper: O. Kaya, L. Colombo, B. Davaji, and C. Cassella, “A Non-Volatile Threshold Sensing System using a Ferroelectric Hf_0.5Zr_0.5O₂ Device on a LiNbO₃ Microacoustic Resonator”, has been selected as a finalist for the Outstanding Student Paper Competition at the 2023 IEEE International Conference on Microelectromechanical Systems (MEMS 2023).

December 2022: Prof. Cristian Cassella, Nicolas Casilli, Onurcan Kaya, Prof. Philip X.-L. Feng, and Tahmid Kaisar filed a U.S. Provisional Patent Application-63/429,094 titled Nonvolatile State Configuration of Nano-Watt Parametric Ising Spins through Ferroelectric Varactors for Quantum-like Optimization and Computation

November 2022: Dan has passed his PhD proposal review entitled “AlN/AlScN based Micro-Acoustic Metamaterials (μAMs) for Next Generation RF Applications” on November 28th, 2022.

October 2022: Prof. Cristian Cassella, Nicolas Casilli, and Luca Colombo filed a U.S. Provisional Patent Application-63/419,683 titled Single Antenna Subharmonic Tags

October 2022: The paper: N. Casilli, O. Kaya, T. Kaisar, B. Davaji, P. Feng, and C. Cassella, “Nonvolatile State Configuration of Nano-Watt Parametric Ising Spins through Ferroelectric Hafnium Zirconium Oxide MEMS Varactors”, has been accepted at the IEEE International Conference on Microelectromechanical Systems (MEMS 2023).

October 2022: The paper: O. Kaya, L. Colombo, B. Davaji, and C. Cassella, “A Non-Volatile Threshold Sensing System using a Ferroelectric Hf_0.5Zr_0.5O₂ Device on a LiNbO₃ Microacoustic Resonator”, has been accepted at the IEEE International Conference on Microelectromechanical Systems (MEMS 2023).

August 2022: Professor Cristian Cassella, Professor Marvin Onabajo and Professor Miriam Leeser 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”.

August 2022: Professor Cristian Cassella, in collaboration with Rogers Corporation, received a fifteen-month grant for $148K for “Subharmonic Tags on Magneto-Dielectric Substrates”.

June 2022: Hussein has passed his PhD proposal review entitled “Parametric Circuits for Enhanced Sensing and RF Signal Processing” on June 16, 2022.

June 2022: The paper: H. M. E. Hussein and C. Cassella, “A CMOS-Compatible Signal-To-Noise Enhancer Enabling a Filter-less 14.5 dB C/IMD Boost in Slowly Modulated LTV RF Circuits” has been accepted at the European Microwave Conference (EuMW 2022).

May 2022: The paper: X. Zhao, O. Kaya, M. Pirro, M. Assylbekova, L. Colombo, P. Simeoni, and C. Cassella, “A 5.3 GHz Al0.76Sc0.24N Two-Dimensional Resonant Rods Resonator with a kt2 of 23.9%” has been accepted for publication in IEEE Journal of Microelectromechanical Systems (JMEMS), DOI: 10.1109/JMEMS.2022.3178978.

April 2022: The paper: X. Zhao, O. Kaya, Michele Pirro, Sungho Kang, and C. Cassella, “Improving Thermal Linearity and Quality Factor of Al₇₂Sc₂₈N Contour Mode Resonators Using Acoustic Metamaterials Based Lateral Anchors” won the Student Best Paper Award at the 2022 Joint Conference of the European Frequency & Time Forum and the IEEE International Frequency Control Symposium (EFTF-IFCS 2022)! (News-Link-NEU-ECE)

March 2022: The paper: X. Zhao, O. Kaya, Michele Pirro, Sungho Kang, and C. Cassella, “Improving Thermal Linearity and Quality Factor of Al₇₂Sc₂₈N Contour Mode Resonators Using Acoustic Metamaterials Based Lateral Anchors” has been selected as a finalist in the Student Best Paper competition at the 2022 Joint Conference of the European Frequency & Time Forum and the IEEE International Frequency Control Symposium (EFTF-IFCS 2022).

March 2022: The paper: O. Kaya, X. Zhao, and C. Cassella, “Frequency Reprogrammable Al_0.7Sc_0.3N Acoustic Delay Line with up to 13.5 % Bandwidth” has been selected as a finalist in the Student Best Paper competition at the 2022 Joint Conference of the European Frequency & Time Forum and the IEEE International Frequency Control Symposium (EFTF-IFCS 2022).

February 2022: The paper: O. Kaya, X. Zhao, and C. Cassella, “Frequency Reprogrammable Al_0.7Sc_0.3N Acoustic Delay Line with up to 13.5 % Bandwidth” has been accepted at the 2022 Joint Conference of the European Frequency & Time Forum and the IEEE International Frequency Control Symposium (EFTF-IFCS 2022).

February 2022: The paper: X. Zhao, O. Kaya, M. Pirro, S. Kang, and C. Cassella, “Improving Thermal Linearity and Quality Factor of Al₇₂Sc₂₈N Contour Mode Resonators Using Acoustic Metamaterials Based Lateral Anchors” has been accepted at the 2022 Joint Conference of the European Frequency & Time Forum and the IEEE International Frequency Control Symposium (EFTF-IFCS 2022).

2021:

October 2021: The paper: O. Kaya, X. Zhao and C. Cassella, “An Aluminum Scandium Nitride (Al_0.64Sc_0.36N) Two-Dimensional-Resonant-Rods Delay Line with 7.5% Bandwidth and 1.8 dB Loss” has been accepted at the 35th International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2022).

October 2021: The paper: H. M. E. Hussein, L. Colombo and C. Cassella, “ A LINBO3-Based Subharmonic Tag For Passive And Far-Field Identification” has been accepted at the 35th International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2022).

October 2021: Prof. Cristian Cassella and Onurcan Kaya filed a U.S. Provisional Patent Application-63/249,569 titled Two-Dimensional Resonant Rods-Based Delay Line With High Bandwidth

August 2021: The paper: X. Zhao, O. Kaya, M. Pirro, G. Michetti, C. Colombo, and C. Cassella, “An Ultra-Low Impedance 4.8 GHz Al72Sc28N Resonant Rods Resonator With a Record kt2 of 21.2%” has been accepted for publication and presentation at the 1st IEEE International Microwave Filter Workshop (IMFW 2021).

July 2021: Our paper “Parametric Acoustic-Based Passive Transponders for Ultra – Sensitive Temperature and Temperature-Threshold Sensing” won the IEEE International Frequency Control Symposium (EFTF-IFCS 2021) Best Student Paper Award!

July 2021: MicronRF laboratory is awarded a grant from the National Science Foundation (NSF) to develop an Ising machine for massive-scale computing and optimization. In the next three years, we will work closely to demonstrate a new path towards quantum-like computing capabilities leveraging the exotic dynamics exhibited by chip-scale networks of electroacoustic parametric oscillators operating at room temperature and built through semiconductor processes frequently used to mass-produce any commercial integrated circuits. To know more, check our research proposal at: link

June 2021: The paper: H. M. E. Hussein, M. Rinaldi, M. Onabajo, and C. Cassella, “Capturing and Recording Cold Chain Temperature Violations through Parametric Alarm-Sensor Tags” has been accepted for publication in Applied Physics Letters.

May 2021: An invited talk: Prof. Cassella will give an invited talk at the European Frequency and Time Forum and the IEEE International Frequency Control Symposium. (EFTF-IFCS 2021) “Long Range and High Sensitivity Remote Sensing Through Passive, Battery-Less and Harvester-Free Subharmonic Tags”.

May 2021: The paper: H. M. E. Hussein, L. Colombo and C. Cassella, “ Parametric Acoustic-Based Passive Transponders for ultra-Sensitive Temperature and Temperature-Threshold Sensing” has been selected as a finalist in the student Best Paper competition at the European Frequency and Time Forum and the IEEE International Frequency Control Symposium. (EFTF-IFCS 2021).

May 2021: The paper: H. M. E. Hussein, L. Colombo and C. Cassella, “ Parametric Acoustic-Based Passive Transponders for ultra-Sensitive Temperature and Temperature-Threshold Sensing” has been accepted at the European Frequency and Time Forum and the IEEE International Frequency Control Symposium (EFTF-IFCS 2021).

March 2021: The paper: H. M. E. Hussein, M. Ibrahim, M. Rinaldi, M. Onabajo, and C. Cassella, “Reflective Parametric Frequency Selective Limiters with sub-dB Loss and μWatts Power Thresholds” has been accepted for publication in IEEE Transactions on Microwave Theory and Techniques.

January 2021: The paper: H. M. E. Hussein, M. Rinaldi, M. Onabajo, and C. Cassella, “ A chip-less and battery-less subharmonic tag for wireless sensing with parametrically enhanced sensitivity and dynamic range” has been accepted for publication in Scientific Reports.

January 2021: The paper: H. M. E. Hussein and C. Cassella, “ A 2.3 GHz -10.8 dBm Threshold Parametric Frequency Selective Limiter with 1.7 dB Loss” has been selected as a finalist in the three minute thesis (3MT) competition at the International Microwave Symposium (IMS 2021).

January 2021: The paper: H. M. E. Hussein and C. Cassella, “ A 2.3 GHz -10.8 dBm Threshold Parametric Frequency Selective Limiter with 1.7 dB Loss” has been accepted at the International Microwave Symposium (IMS 2021). See you in Atlanta!

January 2021: Prof. Cassella is awarded the NSF CARRER from the National Science Foundation to create a new component that will surpass the material limitations that have prevented the achievement of low-loss acoustic resonant technologies, even with moderate frequency tuning ranges. This will allow the creation of new on-chip acoustic-based passives and will provide the means to achieve significantly more stable FSs for future networking components. To know more, check our research proposal at: link

2020:

Dec 2020: The paper: H. M. E. Hussein and C. Cassella, “Giant Sensitivity through Fully-Passive and Chip-Less Parametric Temperature Sensors” has been accepted for publication in IEEE Sensors 2020.

October 2020: MicronRF received an award from DARPA to create a new acoustic delay line based on metamaterials on piezo to be used in future self-interference cancellation networks.

September 2020: Two papers have been accepted for publication in 2020 IEEE International Ultrasonics Symposium (IUS) (September 6 – 11, 2020).

1. X. Zhao and C. Cassella, “Slow Waves in Metamaterial Two-Dimensional-Resonant-Rods (2DRRs) Delay Lines”
2. X. Zhao and C. Cassella, “A Comparative Study on the Performance of Aluminum Nitride Thickness- and quasi-Thickness Extensional Mode Resonators”

May 2020: The paper: H. M. E. Hussein, M. Ibrahim, G. Michetti, M. Rinaldi, M. Onabajo, and C. Cassella, “Systematic Synthesis and Design of Ultra-Low Threshold 2:1 Parametric Frequency Dividers ” has been accepted for publication in IEEE Transactions on Microwave Theory and Techniques.

May 2020: Prof. Cassella and Prof. Piazza (Carnegie Mellon University) have been awarded the patent US. Pat. App 15/560,757 – Two-Dimensional-Mode-Resonators

May 2020: Xuanyi (Dan) Zhao has been selected to serve as an Academic Technology Scholar for Summer 2020

April 2020: The paper: X. Zhao, L. Colombo and C. Cassella, “ Aluminum nitride two-dimensional-resonant-rods” has been published in Applied Physics Letters and selected as Featured Article! LINK: https://doi.org/10.1063/5.0005203

March 2020: An application has been made for Letters Patent entitled “Two Dimensional Rod Resonator for RF Filtering” which patent application was filed in the United States Patent and Trademark Office on March 3, 2020, and assigned serial number 62/984,426.

February 2020: MicronRF receives an award from DARPA to create a new component based on ferroelectric AlScN devices allowing to “beat the electromagnetic crowd”.

Jan 2020: The paper: X. Zhao, B. Herrera, and C. Cassella,  “  Record-High KT2 Exceeding 7.4% Through Low-Impedance Lithographically Defined Resonant Rods in Aluminum Nitride Thin Plates ” has been presented and accepted for publication in IEEE MEMS 2020.

2019:

August 2019: MicronRF receives an award from the National Science Foundation to create a new component that will enable wireless radios with a longer battery lifetime and micro- and nano-sensors with unprecedented levels of resolution and sensitivity. To know more, check our research proposal at: link

May 2019: The paper: Cassella, C., Michetti, G., Pirro, M., Yu, Y., Kord, A., Sounas, D., Alu, A., Rinaldi, M., “Radio Frequency Angular Momentum Biased Quasi-LTI Nonreciprocal Acoustic Filters” has been accepted for publication in IEEE Transactions on Ultrasonics, Ferroelectric and Frequency Control

January 2019: The paper: Cassella, C., Pirro, M., Michetti, G., Rinaldi,  M., “Ultra-High-Isolation Nonreciprocal Acoustic Filter” has been accepted at the International Microwave Symposium (IMS), 2019.

January 2019: The paper: Zhao, X., Cassella, C., “On the Coupling Coefficient of AlScN-based Piezoelectric Acoustic Resonators” has been accepted for oral presentation at the IEEE International Frequency Control Symposium 2019. See you all in Orlando!!

January 2019: The paper: Cassella, C., Segovia, J., “High Electromechanical Coupling Coefficient Exceeding 6.4% through Metal Frames in Aluminum Nitride Two-Dimensional-Mode Resonators“, has been accepted for publication in IEEE Transactions on Ultrasonics, Ferroelectric and Frequency Control

2018:

September 2018: The paper: Segovia J., C. Cassella, “Active and Inactive Frames Improve Figure of Merit of Two Dimensional Mode Resonators“, IEEE International Ultrasonic Symposium, 2018 has been accepted for poster presentation at the IEEE International Ultrasonic Symposium 2018. See you all in Kyoto!!

August 2018: The MicronRF Laboratory is born!