Technical Advisor

Mehdi Hajizadegan, Ph.D.

Mehdi's practice focuses on the U.S. and foreign patent preparation and prosecution in electrical engineering, semiconductor, and photonic systems. He received a Ph.D. (2020) from University of Illinois at Chicago, an M.Sc. (2013) from Tarbiat Modares University (Tehran), and a B.Sc.(2010) from Shahid Rajaei University (Tehran), all in Electrical Engineering.

Mehdi’s experience includes preparation and prosecution of patent applications in various technical fields, including electronic and electromagnetic circuits, semiconductor devices, optical systems, and telecommunications. He has worked on a wide range of projects focused on radio-frequency (RF) circuits, wireless sensors, MEMS/NEMS semiconductor devices, optic/photonic instruments, biomedical wearable devices, wireless power transfer, Artificial Intelligence (AI), and control systems.

Before joining Seed IP, Mehdi served as a staff scientist at a Boston area law firm, a patent engineer at Cardinal IP, and an entrepreneurial lead at NSF I-Corps (National Science Foundation Innovation Corps) at University of Illinois at Chicago.

University of Illinois at Chicago

Electrical Engineering

Ph.D. 2020


Tarbiat Modares University (Tehran)

Electrical Engineering

M.Sc. 2013


Shahid Rajaei University (Tehran)

Electrical Engineering

B.Sc. 2010

Mehdi is a member of the Washington Technology Industry Association (WTIA), the Institute of Electrical and Electronics Engineers (IEEE), the Society of Photo-Optical Instrumentation Engineers (SPIE), the International Union of Radio Science (URSI), IEEE Antennas and Propagation Society (AP-S), and the Washington State Patent Law Association (WSPLA).



M. Hajizadegan, L. Zhu, and P. Y. Chen, “Superdirective leaky radiation from a PT-synthetic metachannel.” Optics Express, vol. 29, No. 8, pp. 12330-12343, 2021.

M. Hajizadegan, M.Sakhdari, Samira Abbasi, and P.Y. Chen “Machine Learning Assisted Multi-Functional Graphene-Based Harmonic Sensors” IEEE Sensors Journal, vol. 21, No. 6, pp. 8333 - 8340, 2020.

M. Hajizadegan, M. Sakhdari, and P.Y. Chen, “High-sensitivity wireless displacement sensing enabled by PT-symmetric telemetry.” IEEE Transactions on Antennas & Propagation, vol. 67, 3445-3449, 2019.

M. Sakhdari, M. Hajizadegan, Q. Zhong, D. N. Christodoulides, R. El-Ganainy, and P. Y. Chen, “Experimental observation of PT symmetry breaking near divergent exceptional points.” Physical Review Letters, vol. 123, no. 19, p. 193901, 2019.

P.Y. Chen, M. Sakhdari, M. Hajizadegan, et al., “Generalized Parity-Time symmetry condition for enhanced sensor telemetry.Nature Electronics, vol. 1, No. 5, p. 297, 2018. 

M. Sakhdari, M. Hajizadegan, and P. Y. Chen, “Robust extended-range wireless power transfer using a higher-order PT-symmetric platform” Physical Review Research, vol. 2, no. 1, p. 013152, 2020.

M. Sakhdari, M. Hajizadegan, Y. Li, M.M. Cheng, Jonathan C. H. Hung, P.Y. Chen, “Ultrasensitive, parity-time symmetric wireless reactive and resistive sensors.IEEE Sensors Journal, vol. 18, No. 23, pp. 9548-9555, 2018.

M. Hajizadegan, M. Sakhdari, and P.Y. Chen, “Hyperbolic metamaterial-based plasmoelectronic nanodevices for detection and harvesting of infrared radiation.” In Micro-and Nanotechnology Sensors, Systems, and Applications X, vol. 10639, p. 106390M. Int. Soc. Opt. Photonics, 2018.

M. Hajizadegan, M.Sakhdari, P.Y. Chen, and et al., “Graphene sensing modulator: toward low-noise, self-powered wireless microsensors.” IEEE Sensors Journal, vol. 17, No. 22, p. 7239, 2017. 

P. Y. Chen, M. Hajizadegan, M. Sakhdari, and A. Alù, “Giant photoresponsivity of midinfrared hyperbolic metamaterials in the photon-assisted-tunneling regime.” Physical Review Applied, vol. 5, No. 4, p.041001, 2016.

H. H. Huang, M. Sakhdari, M. Hajizadegan, A. Shahini, D. Akinwande, and P. Y.Chen, “Toward transparent and self-activated graphene harmonic transponder sensors.” Applied Physics Letters, vol.108, No.17, p.173503, 2016.

M. Sakhdari, M. Hajizadegan, M. Farhat, and P. Y. Chen, “Efficient, broadband and wide-angle hot-electron transduction using metal-semiconductor hyperbolic metamaterials.” Nano Energy, vol. 26, pp.371-381, 2016. 

M. Hajizadegan, V. Ahmadi, and M. Sakhdari, “Design and analysis of ultrafast and tunable all optical metamaterial switch enhanced by metal nanocompositeJournal of Lightwave Technology, vol. 31, pp. 1877-1883, 2013. 

M. Hajizadegan, D. Fathi, M. Sakhdari, “All-optical metamaterial switch based on Kerr effect with MWCNT compositePhysica E: Low-dimensional Systems and Nanostructures, vol. 48, pp. 1-6, 2013. 

D. Fathi, M. Sakhdari, and M. Hajizadegan, “All optical SRR switch using carbon nanotube composite.” Optik-International Journal for Light and Electron Optics, vol. 125, No.16, pp. 4405-4410, 2014.


P.Y. Chen, M. Sakhdari, M. Hajizadegan, M.M. Cheng, “Parity-Time (PT)-Symmetric Wireless Telemetric Sensors and Systems” U.S. Patent Application 16/504, 664, Jan. 2020. 

GOOGLE SCHOLAR: mhajizadegan


M. Hajizadegan, L. Zhu, and P. Y. Chen, “Highly Directive Leaky-Wave Antennas Based On PT-Symmetric Metasurfaces.” In International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019 Granada, Spain.

M. Hajizadegan and P. Y. Chen, “A PT-Symmetric Metasurface and Its Exotic Waveguiding and Radiation Properties.” META 2019, Lisbon, Portugal, July 2019.

M. Hajizadegan, and P. Y. Chen, “Gesture Recognition Using A Portable and Flexible Meta-Atom Panel and Machine Learning.” In Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2019 IEEE International Symposium on, Atlanta, GA.

M. Hajizadegan, M. Sakhdari, P.Y. Chen “PT-symmetric inductive displacement sensors.” In 2018 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), pp. 1-3. IEEE, 2018.

M. Hajizadegan, and P. Y. Chen, “Harmonics-Based RFID Sensor Based on Graphene Frequency Multiplier and Machine Learning.” In Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018 IEEE International Symposium on, pp. 1621-1622. IEEE, 2018.

M. Hajizadegan, Pai-Yen Chen, “Parity-Time symmetric leaky-wave metasurfaces”, National Radio Science Meeting (URSI 2018), Boulder, Colorado, US, 2018.

M. Hajizadegan, and P. Y. Chen, “A self-powered harmonic sensor based on simple graphene circuit and hybrid-fed antenna.” In Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017 IEEE International Symposium on, pp. 581-582. IEEE, 2017.

M. Hajizadegan, Pai-Yen Chen, “Ultrasensitive Parity-Time symmetric wireless microsensors”, National Radio Science Meeting (URSI 2017), Boulder, Colorado, US, 2017.

M. Hajizadegan, P. Y. Chen, “Efficient rectification of infrared radiation using nano-rectennas and slow-light microstructure”, 2016 IEEE International Symposium on Antennas and Propagation/USNC-URSI National Radio Science Meeting, Fajardo, Puerto Rico, 2016. 

M. Hajizadegan, P. Y. Chen, “Efficient, broadband and wide-angle hot-electron photoemission: a metamaterial approach”, National Radio Science Meeting (URSI 2016), Boulder, Colorado, US, 2016.

A. Shahini, M. Hajizadegan, M. Sakhdari, P. Y. Chen, “Self-Powered and transparent all-graphene biosensor”, IEEE SENSORS 2016 Conference in Orlando, Florida, 2016.

M. Hajizadegan, M. Sakhdari, and V. Ahmadi “Design of a tunable all-optical metamaterial switch enhanced by metal nanocomposite” 19th Iranian Conference on Optics and Photonics (ICOP), Zahedan University, Iran, 2013. 

M. Hajizadegan, M. Sakhdari, and V. Ahmadi “Investigation of density and distribution of metal nanoparticles effect on the plasmonic absorption in metal nanocomposite using FEM” 1st National Congress and Workshop on Nanoscience and Nanotechnology (NCWNN), Tarbiat Modares University, Tehran, Iran, 2013. 

M. Hajizadegan, M. Sakhdari, and V. Ahmadi “Design of a Kerr effect based terahertz all-optical switch using metallic nanocomposite metamaterial structure” Second Conference on Millimeter -Wave and Terahertz Technologies (MMWaTT), Tehran University, Iran, 2012. 

S. Olyaee, M. HajizadeganDesign and implementation of a new optical microphone independent of membrane structure technology” 2nd Iranian Conference on Optic and Laser Engineering (ICOLE), Isfahan, Iran, 2011

GOOGLE SCHOLAR: mhajizadegan

No items found.

Honors & Awards