- Distinguished Engineering Professor
- Chemical, Biomolecular, and Materials Engineering
- Phone: 401.874.2085
- Email: ogregory@uri.edu
- Office Location: Kirk Building, Rm 213
- ResearchGate
Research
- Sensors for Harsh Environments: Physical and Chemical Sensors
- Passive and Active Wireless Sensors
- RFID Sensors
- Instrumentation for Gas Turbine Engines
- Surface Chemistry and Microstructural Analysis
- Physical Vapor Deposition/Sputtering and Reactive Sputtering
- Forensic Engineering
- Chemical Sensors for Trace Detection of Explosives
- Covalent Ceramics/CMC’s
Education
- Ph.D., Brown University, 1983
- M.S., University of Rhode Island, 1977
- B.S., University of Rhode Island, 1975
Selected Publications
| A. Lucia, C. Miller and O.J. Gregory, “Predicting Random Packing and Thermophysical Properties of Powders Using Monte Carlo Simulation”, Computational Materials Science, vol. 257, 2025 |
| C. Miller, N. Wright and O.J. Gregory, “Extension Wire System for Thin Film Ceramic Thermocouples”, Sensors and Actuators: A. Physical, Vol. 386, 2025 |
| N. Burke and O.J. Gregory, “Transient Thermal Mapping Utilizing the Sintering of Glass Ceramics”, Advanced Engineering Materials, 2401585, p. 1-9 2024 |
| K. Rivera and O.J. Gregory, “Indium Tin Oxide as a Dual Region Resistance Temperature detector”, Measurement: Sensors 34, p.101265 2024 |
| A. Lucia and O.J. Gregory, “Modeling Thermophysical Properties of Glasses”, Nature, Sci Reports 13, p. 989- 1002 , 2023 |
| N. Burke, P. Panoutsopoulos and O.J. Gregory, “An Optical Technique Based on Silicate Glass Sintering for Temperature Mapping” JACS: International Journal of Applied Glass Science, vol. 14, p.167-172 , 2023 |
| K. Rivera and O.J. Gregory, “Novel Heat-Flux Sensors for Ceramic Matrix Composite Engine Components”, Sensors and Actuators A: Physical, vol 345 [2], p. 113,771 , 2022 |
| P.P. Ricci, Gregory O.J. Free-standing, thin-film sensors for the trace detection of explosives. Scientific Reports, 2021; 11(1), 6623. doi: 10.1038/s41598-021-86077-6 |
| P.P. Ricci and O. J. Gregory, “Sensors for the Detection of Ammonia as a Potential Biomarker for Health Screening”, Nature, Sci Reports 11, p. 7185 , 2021 |
| P.P. Ricci, Gregory OJ. Continuous Monitoring of TATP Using Ultrasensitive, Low-Power Sensors. IEEE Sensors Journal, 2020; 20(23), 14058 – 14064. doi: 10.1109/JSEN.2020.3008254 |
| Rivera K, Gregory OJ. ITO:SiC Ceramic Matrix Composite Thermocouples for Engine Components. IEEE Sensors Letters, 2020; 4(5), 9089290. doi:1109/LSENS.2020.2993047 |
| Ricci PP, Rossi AS, Gregory OJ. Orthogonal Sensors for the Trace Detection of Explosives. IEEE Sensors Letters, 2019; 3(10), 1-4. doi: 10.1109/LSENS.2019.2944587 |
| Rossi AS, Ricci P, Gregory OJ. Trace Detection of Explosives Using Metal Oxide Catalysts. IEEE Sensors Journal, 2019; 19(13), 4773-4780. doi: 10.1109/JSEN.2019.2904246 |
| Tian Y, Ghanekar A, Qian L, et al. Near-infrared Optics of Nanoparticles Embedded Silica Thin Films. Optics Express. 2019; 27(4), A148. doi: 10.1364/OE.27.00A148 |
| Rivera K, Ricci M, Gregory O. Diffusion Barrier Coatings for CMC Thermocouples. Surface and Coatings Technology. 2018; 336, 17-21. doi: 10.1016/j.surfcoat.2017.09.032 |
| Rivera K, Gregory O. Strain Gages for SiC-SiC Ceramic Matrix Composite Engine Components. IEEE Sensors Letters. 2018; PP, 1. doi: 10.1109/LSENS.2018.2854828 |
| Ghanekar A, Ricci M, Tian Y, Zhang S, Gregory O, Zheng Y. Dynamic Optical Response of SU-8 Upon UV Treatment. Optical Materials Express. 2018; 8(7), 2017-2025. doi: 10.1364/OME.8.002017 |
| Ghanekar A, Ricci M, Tian Y, Zhang S, Gregory O, Zheng Y. Strain-Induced Modulation of Near-Field Radiative Transfer. Applied Physics Letters. 2018; 112(24), 241104. doi: 10.1063/1.5037468 |
| Tian Y, Ghanekar A, Ricci M, Hyde M, Gregory O, Zheng Y. A Review of Tunable Wavelength Selectivity of Metamaterials in Near-Field and Far-Field Radiative Thermal Transport. Materials. 2018; 11(5), 862. doi: 10.3390/ma11050862 |
| Ghanekar A, Tian Y, Ricci M, Zhang S, Gregory O, Zheng Y. Near-Field Thermal Rectification Devices Using Phase Change Periodic Nanostructure. Optics Express. 2018; 26(2), A209-A218. doi: 10.1364/OE.26.00A209 |
Patents
“High Temperature Heat Flux Sensors”, K. Rivera and O.J. Gregory, July 8, 2025, U.S. Patent No. 12,356,857 B1
“De-coupled Thermodynamic Sensing System”, P. Ricci and O. J. Gregory, January 7, 2025, U.S. Patent No. 12,188,914.
“Smart Seals for Monitoring and Analysis of Seal Properties Useful in Semiconductor Valves”, C. Quartapella, M. Periyasamy, E. Sassano, O.J. Gregory, G. Fischer, T. Wei, Z. Kinzel and N. Burke, January 2, 2024, U.S. Patent No. 11,860,059. B2
“Glass-Ceramic Thermal Paint System and Method Using UV:VIS Spectroscopy”, N. Burke, P. Panoutsopoulos, Z. Ahlquist and O.J. Gregory, Nov.16, 2023, U.S. Patent No. 20230365818A1.
“Trace Detection of Chemical Compounds via Catalytic Decomposition and Redox Reactions”, O. J. Gregory, P. Ricci, and A. Rossi, July 18, 2023, U.S. Patent No. 11,703,471.
“Metal Fastener with Embedded RFID Tag and Method of Production”, G. Grove, O.J. Gregory and T. Wei, Feb 21, 2023, U.S. Patent No. 11,586,872
“Ultrasensitive, Ultrathin Vapor Sensors and Arrays”, O. J. Gregory and P. Ricci, May 24, 2022, U.S. Patent No. 11,340,183 B1
“Decoupled Thermodynamic Sensing System”, P. Ricci and O. J. Gregory, May 17, 2022, US 11,333,648 B1
“Resistance Temperature Detector (RTD) for Ceramic Matrix Composites”, O.J. Gregory, K. Rivera and M.T. Ricci, September 22, 2020, U.S. Patent No.10,782,190 B1
“Metal Fastener with Embedded RFID Tag and Method of Production”, G. Grove, O.J. Gregory and T. Wei, April 28, 2020, U.S. Patent No. 10,635,963 B2
“High Resolution Strain Gages for Ceramic Matrix Composites and Methods of Manufacture Thereof”, O.J. Gregory, J. Rhoat and K. Rivera, August 6, 2019, U.S. Patent No.10,371,588 B2.
“Systems and Methods for the Detection of Compounds”, O. J. Gregory, Z. Caron, D. Mallin and M. Champlin, Sept. 12, 2017, U.S. Patent No. 9,759,699 B1
“Temperature and Thermal Gradient Sensor for Ceramic Matrix Composites and Methods of Preparation Thereof”, O.J. Gregory, K. Rivera, J. Rhoat, T. Muth, August 17, 2017, U.S. Patent No.10,690,551B2
"Wireless Temperature Measurement System and Methods of Making and Using Same", O.J. Gregory, J. Conkle and T. Birnbaum, Oct. 29, 2013, US Patent No. 8,356,802 B2
"Wireless Temperature Measurement System and Methods of Making and Using Same", O.J. Gregory, J. Conkle and T. Birnbaum, January 8, 2013, US Patent No. 8,348,504 B2
Recent Grants
| 5/01/2025. Teledyne-FLIR. “CVCAD Oxide Characterization, Deposition and Evaluation Using Combinatorial Chemistry” |
| 3/15/2025. Pratt and Whitney “Thin Film Strain Sensors for Inconel Constant Strain Beams” |
| 1/28/2025. Pratt and Whitney “Evaluation of High Temperature Sensors for SiC-SiC Ceramic Matrix Composites” |
| 8/20/2024. PI. Dept. of Homeland Security-Northeastern University “Soft target Engineering to Neutralize the Threat RealitY (SENTRY).” |
| 8/01/2023. Greene Tweed& Co., Inc.“Smart Intrinsic Seal Technology using Optical Sensing.” |
| 7/20/2023. PI. Northeastern University “Soft target Engineering to Neutralize the Threat RealitY (SENTRY).” |
| 3/10/2023. PI.Pratt & Whitney. “CMC Sensor Development.” |
| 9/7/2022. Co-PI. Northeastern University. “Dual Use Chemical Sensors Sentry-Soft Target Engineering to Neutralize the Threat Reality.” |
| 8/22/2022. PI. URI Research Foundation. “Smart Intrinsic Seal Technology using Optical Sensing.” |
| 8/18/2022. PI. Florida International University. “Health Management of Hypersonic Aeroshell: Inverse Determination of Aero-thermo-mechanical State with Arrays of Internal Thin Film Sensors.” |
| 8/11/2022. PI. Florida International University. “Health Management of Hypersonic Aeroshell: Inverse Determination of Aero-thermo-mechanical State with Arrays of Internal Thin Film Sensors.” |
| 2/26/2022. Co-PI. Northeastern/DHS. “Dual Use Chemical Sensors, SENTRY-Soft Target Engineering to Neutralize the Threat Reality.” |
| 1/22/2022. PI. Pratt & Whitney. “Evaluation of High Temperature Sensors for SiC-SiC Ceramic Matrix Composites.” |
| 1/29/2019. PI. Pratt & Whitney. “Evaluation of High Temperature Sensors for SiCSiC Ceramic Matrix Composites.” |
| 1/11/2019. PI. ENrG Inc. “Ultra-Thin Self Powered Sensors for UAV Applications.” |
| 8/29/2018. PI. Greene Tweed & Co., Inc. “RFID for Bolt Identification with Sensing Capability.” |
| 7/27/2018. PI. Pratt & Whitney. “Evaluation of High Temperature Sensors for SiC-SiC Ceramic Matrix Composites” |
Honors and Awards
University of Rhode Island “Advanced Career Faculty Research and Scholarship Excellence Award” (May 2022)