February 2026
- Six papers from the group were accepted to Hilton Head 2026.
- Enabling lithium niobate phononic frequency combs via thermal engineering and design, Hilton Head Workshop, 2026.
- Thickness-field excited bimorph lithium niobate piezoelectric transducer, Hilton Head Workshop, 2026.
- Whip-mode flexural resonance in LiTaO3-on-SiO2 bimorph piezoelectric microresonator enabling near 60 m/s tip velocity, Hilton Head Workshop, 2026.
- Gigahertz acoustoelectric effect in monolayer graphene–lithium niobate heterostructures, Hilton Head Workshop, 2026.
- Bimorph lithium niobate thickness-shear overtone resonator with high Q above 20,000 at 779 MHz, Hilton Head Workshop, 2026.
- 12.3 GHz longitudinal mode surface acoustic wave resonator in lithium niobate on silicon carbide, Hilton Head Workshop, 2026.
- Two collaborative papers were accepted to CLEO 2026.
- Monolithic room-temperature mid-infrared detector based on thin-film lithium niobate optomechanical resonator, CLEO, Charlotte, NC, May 2026.
- Opto-electro-mechanical oscillator on thin-film lithium niobate, CLEO, Charlotte, NC, May 2026.
- Jack and Joshua’s paper was accepted to Applied Physics Letters and selected as an Editor’s Pick.
- Cryogenic Q Enhancement in 50 GHz Piezoelectric Resonators, Applied Physics Letters, 2026.
- Two papers were accepted to IEEE IFCS 2026.
- Single-Crystal AlN Wafer-Based Bulk Acoustic Resonators for Piezoelectric Power Conversion, IEEE IFCS, 2026.
- Q-Enhanced SH-SAW Ladder Filter in Thin-Film Lithium Tantalate Using Bartlett Apodization, IEEE IFCS, 2026.
- Jack and Omar’s paper was accepted to the IEEE Journal of Microwaves.
- 50 GHz Piezoelectric Acoustic Filter, IEEE Journal of Microwaves, 2026.
January 2026
- A collaborative paper was published in Communications Engineering.
- High-velocity laser Doppler vibrometry measurements on an aluminum nitride bimorph wedge resonator, Communications Engineering, 2026.
- Ian’s paper was accepted to Applied Physics Letters.
- Phononic Combs in Lithium Niobate Acoustic Resonators, Applied Physics Letters, 2026.
- Yinan and Byeongjin’s paper was accepted to Applied Physics Letters.
- 62.6 GHz ScAlN solidly mounted acoustic resonators, Applied Physics Letters, 2026.
December 2025
- Mihir’s paper was accepted to IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control.
- Thermal Endurance of Suspended Thin-Film Lithium Niobate up to 800 °C, IEEE TUFFC, 2025.
- Omar received the Ben Streetman Award.
- Vato’s paper was accepted to IEEE Transactions on Electron Devices: Toward Miniature High-Coupling Lithium Niobate Thin-Film Bulk Acoustic Wave Resonators at Millimeter Wave.
November 2025
- Jayanth received an undergraduate research fellowship.
- Sinwoo’s paper was accepted to IEEE Journal of Microelectromechanical Systems.
- An 11.7-GHz ScAlN FBAR filter: Case study on scaling limits and challenges, IEEE JMEMS, 2025.
- Taran’s paper was accepted to IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control.
October 2025
- Vivek received the IEEE EDS Master Student Fellowship.
- Two papers were accepted to IEEE MEMS 2026.
- Radial Mode Lithium Niobate Rosen Transformer, IEEE MEMS, 2026.
- Residual Stress Anisotropy in Thin-Film Lithium Niobate for Stress-Managed MEMS, IEEE MEMS, 2026.
September 2025
- A paper from the group was accepted to IEEE Electron Device Letters.
- 19.3 GHz Acoustic Filter with High Close-in Rejection in Tri-layer Thin-Film Lithium Niobate, IEEE Electron Device Letters, 2025.
- Our collaborative paper with Prof. Juan Rivas’s team, A Spurious-Free Piezoelectric Resonator Based 3.2 kW DC–DC Converter for EV On-Board Chargers, received the 2024 IEEE Transactions on Power Electronics Second Place Prize Paper Award.
- Kevin’s paper was accepted to IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control.
August 2025
- Vato’s paper was accepted to IEEE Electron Device Letters.
- High-Q millimeter-wave acoustic resonators in thin-film lithium niobate using higher-order antisymmetric modes, IEEE Electron Device Letters, 2025.
July 2025
- Two papers from the group were accepted to IEEE JMEMS and IEEE TUFFC.
- Cross-sectional Lamé mode acoustic resonators in thin-film lithium niobate, IEEE JMEMS, 2025.
- A generalized acoustic framework for multilayer piezoelectric platforms, IEEE TUFFC, 2025.
- Sinwoo Cho successfully defended his Ph.D. He joined SpaceX in August 2025.
- Omar Barrera successfully defended his Ph.D. He joined Broadcom in August 2025.
June 2025
- Mihir Chaudhari received third place in the IEEE MTT-S Student Design Competition at IMS 2025.
- Three papers from the group were accepted to IUS 2025.
- Bimorph Lithium Niobate Piezoelectric Micromachined Ultrasonic Transducer, IEEE IUS, 2025.
- Periodically Poled Piezoelectric Lithium Niobate Resonator for Piezoelectric Power Conversion, IEEE IUS, 2025.
- Integrated Infrared Detectors in Lithium Niobate Acoustic Resonators, IEEE IUS, 2025.
- Harshvardhan Gupta joined the group as a postdoctoral researcher.
May 2025
- Two journal papers were accepted.
- Recent advances in high-performance millimeter-wave acoustic resonators and filters using thin-film lithium niobate, Progress in Quantum Electronics, 2025.
- General synthesis methodology for acoustic wave ladder filters in the bandpass domain, IEEE Transactions on Microwave Theory and Techniques, 2025.
- Vivek received the Top ECE TA Award.
April 2025
- Two collaborative papers were published in IEEE journals.
- Frequency and bandwidth design towards millimeter-wave thin-film lithium niobate acoustic filters, IEEE Microwave and Wireless Technology Letters, 2025.
- Lithium Niobate Microphone with High SNR Potential, IEEE Sensors Journal, 2025.
March 2025
- Jack received the Texas Quantum Institute Fellowship.
- Our paper Solidly Mounted Scandium Aluminum Nitride on Acoustic Bragg Reflector Platforms at 14–20 GHz was accepted to IEEE TUFFC.
February 2025
- Jack received the UT Graduate Continuing Fellowship.
- Two collaborative papers were accepted to CLEO 2025.
- Intrinsic Frequency Noise of the Thin Film Lithium Niobate Platforms, CLEO, 2025.
- Room-temperature optomechanical-resonator-based thermal sensor on thin-film lithium niobate, CLEO, 2025.
- Five papers were accepted to Transducers 2025.
- Lithium Niobate Planar Single-Layer Piezoelectric Transducer With No Passive Layer, TRANSDUCERS, 2025.
- Ku-band AlScN-on-diamond SAW Resonators with Phase Velocity Above 8600 m/s, TRANSDUCERS, 2025.
- Thin-Film Scandium Aluminum Nitride Bulk Acoustic Resonator With High Q of 208 and k² of 9.5% at 12.5 GHz, TRANSDUCERS, 2025.
- Lithium Tantalate Bulk Acoustic Resonator for Piezoelectric Power Conversion, TRANSDUCERS, 2025.
- Thermal Resilience of Suspended Thin-Film Lithium Niobate Acoustic Resonators up to 550 °C, TRANSDUCERS, 2025.
- Mihir received the IEEE MTT-S Undergraduate Fellowship.
January 2025
- Two papers were accepted to IMS 2025.
- Frequency and Bandwidth Design of Millimeter Wave Thin-Film Lithium Niobate Acoustic Filter, IEEE IMS, 2025.
- Miniature High-Coupling Lithium Niobate Thin-Film Bulk Acoustic Wave Resonators at 10–30 GHz, IEEE IMS, 2025.
- Sinwoo received the IEEE MTT-S Graduate Fellowship.
December 2024
- Our paper 52 GHz Surface Acoustic Wave Resonators in Thin-Film Lithium Niobate on Silicon Carbide was accepted to IEEE TUFFC.
- Vivek rejoined the group as a graduate student.
- Byeongjin joined the team.
November 2024
- Three collaborative papers were accepted to GOMACTech 2025.
- Our review paper RF Acoustic Microsystems Based on Suspended Lithium Niobate Thin Films: Advances and Outlook received the 2024 IOP Top Cited Paper Award.
- Vato received the Junior Ben Streetman Award for 2024–2025.
October 2024
- Joshua and Ian received the Dean’s Prestigious Fellowship Supplement.
- Two collaborative papers with Prof. Ming-Huang Li were accepted to IEEE MEMS 2025.
- 6 GHz lithium niobate on insulator low-loss SAW delay line adapting non-leaky composite waveguide mode, IEEE MEMS, 2025.
- A 4.3 GHz lithium niobate on insulator wideband surface acoustic wave delay line with multi-mode composition, IEEE MEMS, 2025.
September 2024
- Prof. Lu received the IEEE Ultrasonics Early Career Investigator Award.
- Omar’s paper was accepted to IEEE JMEMS: 18 GHz Solidly Mounted Resonator in Scandium Aluminum Nitride on SiO2/Ta2O5 Bragg Reflector.
August 2024
- Three papers were accepted to the TRF Topical Workshop on Hybrid and Heterogeneous Microsystems 2024.
- Lateral Field Excited Lithium Niobate for High Bandwidth Transducers, TRF Topical Workshop on Hybrid and Heterogeneous Microsystems, 2024.
- Solidly Mounted Resonator Platform Using ScAlN on Bottom Electrode on Bragg Reflector, TRF Topical Workshop on Hybrid and Heterogeneous Microsystems, 2024.
- Room-temperature optomechanical-resonator-based sensor on thin-film lithium niobate, TRF Topical Workshop on Hybrid and Heterogeneous Microsystems, 2024.
July 2024
- Taran joined the team.
- Two papers were accepted to IEEE JMEMS.
June 2024
- Sinwoo received the IEEE IMS 2024 third-place Best Student Paper Award.
- Vato received the Hilton Head 2024 Best Poster Award.
- Nine papers from the group were accepted as lecture presentations to UFFC-JS 2024.
- Lithium Niobate Resonators for Piezoelectric Power Conversion: Spurious Mode Suppression via an Active Ring, UFFC-JS, 2024.
- Piezoelectric Acoustics Exceeding 100 GHz, UFFC-JS, 2024.
- 19.3 GHz Acoustic Filter with 2.2 dB IL, 8.5% FBW, and 47 dB Close-in Rejection in Trilayer Periodically Poled Piezoelectric Thin-Film Lithium Niobate, UFFC-JS, 2024.
- 21.4 GHz Surface Acoustic Wave Resonator with 11,400 m/s Phase Velocity in Thin-Film Lithium Niobate on Silicon Carbide, UFFC-JS, 2024.
- 22.4 GHz Longitudinal SAW Resonator with k² of 3.4% and Q of 192, UFFC-JS, 2024.
- Low-Loss Higher-Order Cross-Sectional Lamé Mode SAW Devices in 10–20 GHz, UFFC-JS, 2024.
- High Figure of Merit A3 Mode Lithium Niobate Acoustic Resonators from 30 to 60 GHz, UFFC-JS, 2024.
- 13 GHz Acoustic Resonator with Q of 600 in High-Quality Thin-Film Aluminum Nitride, UFFC-JS, 2024.
- Scaling of Acoustic Resonators into Millimeter Wave Regime Using Piezoelectric Thin Films, UFFC-JS, 2024 (Invited).
May 2024
- Sinwoo was named an IEEE IMS 2024 Best Student Paper Finalist.
April 2024
- Prof. Lu received the Junior Faculty Excellence in Teaching Award from the Chandra Family Department of Electrical and Computer Engineering at UT Austin.
- Rui joined the team.
- Ian received the NASA Space Technology Graduate Research Opportunity (NSTGRO) Fellowship.
March 2024
- Vato was named a Hilton Head 2024 Best Poster Paper Finalist.
- Joshua received the National Defense Science and Engineering Graduate Fellowship (NDSEG).
- Kevin’s paper was accepted to IEEE IC-MAM 2024.
February 2024
- Two papers were accepted to Hilton Head 2024.
- 2 to 16 GHz Fundamental Symmetric Mode Acoustic Resonators in Piezoelectric Thin-Film Lithium Niobate, Hilton Head Workshop, 2024.
- Ultra-Wideband Tapered Transducers in Thin-Film Lithium Niobate on Silicon Carbide, Hilton Head Workshop, 2024.
- Omar received the second-place Best Paper Award at IEEE IMFW 2024.
- Sinwoo’s IEEE IMS 2024 paper was invited to and accepted by IEEE Microwave and Wireless Technology Letters.
- Hanson received the Mentoring Fellowship from UT.
- A collaborative paper was accepted to IEEE Open Journal of Power Electronics.
- A Stacked Piezoelectric Converter Using a Segmented IDT Lithium Niobate Resonator, IEEE Open Journal of Power Electronics, 2024.
- Two papers were accepted to IEEE IMS 2024.
- Experimental Study of Periodically Poled Piezoelectric Film Lithium Niobate Resonator at Cryogenic Temperatures, IEEE IMS, 2024.
- 23.8 GHz Acoustic Filter in Periodically Poled Piezoelectric Film Lithium Niobate with 1.52 dB IL and 19.4% FBW, IEEE IMS, 2024.
January 2024
- Hanson joined the team and received the UT ECE Mentoring Fellowship.
- Prof. Lu received the NSF CAREER Award.
- Three papers were selected as Best Student Paper Finalists at IEEE MEMS 2024.
- Our paper was highlighted by IEEE Transactions on Power Electronics as one of the highlighted papers from February 2024.
November 2023
- Omar’s paper was accepted to IEEE IMFW 2024.
- 38.7 GHz Thin-Film Lithium Niobate Acoustic Filter, IEEE IMFW, 2024.
- Jack’s paper was accepted to GOMACTech 2024.
- Our collaborative work A Spurious-Free Piezoelectric Resonator Based 3.2 kW DC-DC Converter for EV On-Board Chargers was accepted to IEEE Transactions on Power Electronics.
- Jack Kramer received the Junior Ben Streetman Award for 2023–2024.
- Three papers were accepted to IEEE MEMS 2024.
- Millimeter-wave thin-film bulk acoustic resonator in sputtered scandium aluminum nitride using platinum electrodes, IEEE MEMS, 2024.
- A dispersion-engineered YX-LN/SiO2/Sapphire SH-SAW resonator for enhanced electromechanical coupling and Rayleigh mode suppression, IEEE MEMS, 2024.
- Transferred Thin-Film Lithium Niobate as Millimeter-Wave Acoustic Filter Platforms, IEEE MEMS, 2024.
October 2023
- Our paper Thin-Film Lithium Niobate Acoustic Filter at 23.5 GHz with 2.38 dB IL and 18.2% FBW was selected as a JMEMS Right Now Paper and featured on the journal cover.
- Our paper Millimeter Wave Thin-Film Bulk Acoustic Resonator in Sputtered Scandium Aluminum Nitride was accepted to IEEE JMEMS.
- Prof. Lu will present an invited talk at the 2024 IEEE UFFC Joint Symposium.
September 2023
- Our paper Thin-Film Lithium Niobate Acoustic Filter at 23.5 GHz with 2.38 dB IL and 18.2% FBW was accepted to IEEE JMEMS.
August 2023
- Our paper Near Spurious-Free Thickness Shear Mode Lithium Niobate Resonator for Piezoelectric Power Conversion was accepted to IEEE TUFFC.
June 2023
- Jack received the UT ECE Summer Graduate Scholarship.
May 2023
- Five papers were accepted to IEEE IUS 2023.
- Trilayer Periodically Poled Piezoelectric Film Lithium Niobate Resonator, IEEE IUS, 2023.
- Frequency Tuning of Suspended Millimeter-Wave Lithium Niobate Acoustic Resonators Using Ion Beam Assisted Argon Gas Cluster Trimming, IEEE IUS, 2023.
- Fundamental Antisymmetric Mode Acoustic Resonator in Periodically Poled Piezoelectric Film Lithium Niobate, IEEE IUS, 2023.
- 28.4 GHz Bulk Acoustic Resonator in Thin-Film Scandium Aluminum Nitride, IEEE IUS, 2023.
- Spurious Mode Suppression with Excited Ring in Lithium Niobate Bulk Acoustic Resonators for Piezoelectric Power Conversion, IEEE IUS, 2023.
- Jack received the Best Student Paper Award at IEEE IFCS 2023.
- Vato received the Jim and Dorothy Doyle Scholarship.
April 2023
- Kristi received the Texas ECE Graduate Achievement Award.
- Jack received third place in the Student Research Competition at the Texas Symposium on Wireless and Microwave Circuits and Systems.
- Jack was selected as a Best Student Paper Finalist for IEEE IFCS 2023.
March 2023
- Joshua, Tianyi, and Ian joined the group in Fall 2023.
- Four papers were accepted to IEEE IFCS 2023.
- Thin-Film Lithium Niobate Acoustic Resonator with High Q of 237 and k² of 5.1% at 50.74 GHz, IEEE IFCS, 2023.
- Frequency Scaling Millimeter-Wave Acoustic Devices in Thin-Film Lithium Niobate, IEEE IFCS, 2023.
- Spurious-Free Lithium Niobate Bulk Acoustic Resonator for Piezoelectric Power Conversion, IEEE IFCS, 2023.
- Analysis of 5–10 GHz Higher Order Lamb Acoustic Waves in Thin-Film Scandium Aluminum Nitride, IEEE IFCS, 2023.
February 2023
- Our collaborative work with Dr. Lai’s group was accepted to Nature Communications: Nanoscale Imaging of Super-High-Frequency Microelectromechanical Resonators with Femtometer Sensitivity.
January 2023
- Jack’s paper was accepted to IMS 2023: Extracting Acoustic Loss of High-Order Lamb Modes at Millimeter-Wave Using Acoustic Delay Lines.
December 2022
- Tzu-Hsuan joined the group as a visiting student.
- Omar received the Cadence Diversity in Technology Scholarship.
November 2022
- Wen joined the group in Spring 2023.
October 2022
- Kristi received the Best Student Paper Award at IEEE IUS 2022.
September 2022
- Our paper 57 GHz Acoustic Resonator with k² of 7.3% and Q of 56 in Thin-Film Lithium Niobate was accepted to IEDM 2022.
July 2022
- Jack received the Best Student Paper Award at IEEE IC-MAM 2022.
- Kristi was selected as a Best Student Paper Finalist for IEEE IUS 2022.
June 2022
- Jack’s two papers were accepted to PiezoMEMS 2022.
- K-Band First-Order Antisymmetric Mode Acoustic Resonator in Thin-Film Lithium Niobate, PiezoMEMS, 2022.
- Millimeter-Wave Acoustic Delay Lines in Periodically Poled Piezoelectric Film Lithium Niobate, PiezoMEMS, 2022.
- Our collaborative work with Dr. Lai’s group was accepted to PiezoMEMS 2022: Spatiotemporal Imaging of Acoustic Resonators by Microwave Microscopy.
- Kristi’s paper was accepted to IEEE IUS 2022: Near-Spurious-Free Lithium Niobate Resonator for Piezoelectric Power Conversion with Q of 3500 and k2t of 45%.
May 2022
- Our collaborative work with Prof. Siddhartha Ghosh from Northeastern University was accepted to IC-MAM 2022: Experimental Observation of Electron-Phonon Interaction in Semiconductor on Solidly Mounted Thin-Film Lithium Niobate.
- Jack’s paper was accepted to IC-MAM 2022: Acoustic Wave Focusing Lens at Radio Frequencies in Thin-Film Lithium Niobate.
April 2022
- Sinwoo was selected as a 2022 Qualcomm Innovation Fellowship Finalist.
- Sinwoo received first place in the Student Research Competition at the Texas Symposium on Wireless and Microwave Circuits and Systems, and Jack received an honorable mention award.
March 2022
- Vakhtang (Vato) Chulukhadze joined the group in Fall 2022.
- Yenwei Chang joined the group in Fall 2022.
- Our collaborative paper, Enabling IoT Self-Localization Using Ambient 5G Signals, was accepted to NSDI Fall 2022.
February 2022
- Prof. Lu received the IEEE MTT-S 2022 Microwave Award for the paper Surface Acoustic Wave Devices Using Lithium Niobate on Silicon Carbide.
- Our paper Acoustic Delay Lines in Thin-Film Lithium Niobate on Silicon Carbide was accepted as an oral presentation at IEEE IMS 2022.
December 2021
- Omar joined the group in Spring 2022.
- Kristi was selected as the junior student representative in the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society (UFFC-S).
November 2021
- We had openings for outstanding postdoctoral researchers in RF microsystems (read more).
- We had openings for graduate students.
- Our collaborative paper was accepted to Applied Physics Letters: Visualization of Acoustic Power Flow in Suspended Thin-film Lithium Niobate Phononic Devices.
- Our collaborative paper was accepted to IEEE Open Journal of Power Electronics: Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance.
September 2021
- Our paper Acoustic Loss of GHz Higher-Order Lamb Waves in Thin-Film Lithium Niobate: A Comparative Study was accepted to IEEE Journal of Microelectromechanical Systems.
- Prof. Lu received the Texas ECE Early Career Fellow award for 2021–2022.
July 2021
- Our invited review paper, RF Acoustic Microsystems Based on Suspended Lithium Niobate Thin Films: Advances and Outlook, was accepted to Journal of Micromechanics and Microengineering.
June 2021
- Our paper Acoustic Loss in Thin-Film Lithium Niobate: An Experimental Study was accepted to IEEE Journal of Microelectromechanical Systems.
- Our paper Power Flow Angles of GHz Propagating Acoustic Waves in Thin-Film Lithium Niobate was presented at IEEE IUS 2021.
May 2021
- Our paper A 15.8 GHz A6 Mode Resonator with Q of 720 in Complementarily Oriented Piezoelectric Lithium Niobate Thin Films was presented at IEEE IFCS 2021 as an invited presentation.
April 2021
- Kristi and Jack joined the group in Fall 2021.
- Our paper GHz Low-Loss and High Power Handling Acoustic Delay Lines Using Thin-Film Lithium Niobate on Sapphire was accepted to IEEE Transactions on Microwave Theory and Techniques.
March 2021
- Sinwoo joined the group in Fall 2021.
- Our collaborative paper, Optimized Resonators for Piezoelectric Power Conversion, was accepted to IEEE Open Journal of Power Electronics.
- Our invited review paper, Microwave Acoustic Devices: Recent Advances and Outlooks, was accepted to IEEE Journal of Microwaves.
February 2021
- Our paper Low-Loss and High Power Handling Acoustic Delay Lines Using Thin-Film Lithium Niobate on Sapphire was accepted as an oral presentation at IEEE IMS 2021.
- Prof. Lu was nominated as the Education Committee Chair of the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society (UFFC-S).
January 2021
- Prof. Lu was nominated as an IEEE Electron Devices Society (EDS) Technical Committee Member for Microelectromechanical Systems.
December 2020
- Our collaborative work Efficient Wideband Spectrum Sensing Using MEMS Acoustic Resonators was accepted to NSDI Fall 2021.
- Our work Enabling Higher Order Lamb Wave Acoustic Devices With Complementarily Oriented Piezoelectric Thin Films was highlighted as an IEEE JMEMS Right Now Paper.