Dr Yu Jia

Lecturer in Mechanical Engineering

Dr Yu Jia graduated MEng from Uni. Southampton in 2010 and PhD from Uni. Cambridge in 2014. He then stayed on in Cambridge as a Research Associate for a year, before joining the faculty at Uni. Chester in June 2015. He has published about 40 publications, 4 patents filed and is an academic co-founder of 8power Ltd. His research interests include vibration energy harvesting, micro-electromechanical systems, nonlinear vibration dynamics and smart integrated systems.

Qualifications

PhD (Cantab), MEng (Hons), MIEEE, PGCLTHE, FHEA.

Overview

Dr Yu Jia is currently a Lecturer in Mechanical Engineering at the University of Chester, leads the Smart Microsystems Research Group, and is also a Visiting Academic at the University of Cambridge (Department of Engineering). His research interests include vibration energy harvesting, microelectromechanical systems, nonlinear vibration dynamics and smart integrated systems. He regularly publishes in top tier scientific journals, attends international scientific conferences, is affiliated with a number of professional bodies such as IEEE, serves as reviewer for over a dozen journals, collaborates with a number of universities, and works with a number of technology companies in the form of funded collaborative projects and knowledge transfer.

He received a First Class (Honours) in MEng Electromechanical Engineering from the School of Electronics and Computer Science at the University of Southampton in 2010. He then completed his PhD in Engineering from the University of Cambridge in 2014. From 2014 to 2015, he was a Research Associate at the University of Cambridge (Nanoscience Centre and the Centre for Smart Infrastructure and Construction). During his time at Cambridge, he also served as the Branch Secretary and then the Vice Chairman of the IEEE Cambridge student branch, promoting the local Cambridge presence of this global professional network. Dr Yu Jia is also co-founded 8power Ltd in 2015, a Cambridge based technology company commercialising energy harvesting and IoT solutions. 8power has raised over 1.5 million GBP by 2017.

Teaching

Dr Yu Jia specialises in classical Newtonian mechanics, as well as teaching interests extending to nonlinear vibration and MEMS.

2017 onwards: Module leader for SE5053 Applications and Design of Robotics and Mechatronics, Department of Mechanical Engineering, University of Chester.

2015 onwards: Module leader for SE5045 Advanced Statics and Mechanics, and SE5046 Advanced Dynamics, Department of Mechanical Engineering, University of Chester.

2012-2013: Teaching assistant (1 of 2 positions), Mechanics and Materials Division, Department of Engineering, University of Cambridge.

Research

Dr Yu Jia is interested in both fundamental and applied research in areas including: energy harvesting, MEMS (microelectromechanical systems), resonators, nonlinear vibration dynamics, sensors and smart integrated systems. He leads the Smart Microsystems Research Group with a dedicated Vibration Dynamics and MEMS lab.

One of the key applied research directions is to realise ambient vibration powered autonomous wireless sensor systems for structural health monitoring of systems such as bridges, tunnels, railways, cars, airplanes, utility distribution infrastructure, industrial process control, engines and motors, etc. In a nutshell: enabling of a self-powered, install-and-forget, wireless smart system as part of IOT (Internet of things).

One of the key fundamental research directions is to explore interesting vibratory phenomenon associated with various nonlinear oscillators, such as a Mathieu-Van der Pol-Duffing oscillator. For example, in 2014, Dr Yu Jia experimentally observed, for the first time, up to 28 orders of parametric resonance in a MEMS resonator, which was previously confined within the theoretical realm.

Published work

Peer reviewed journal articles:

1. Shao-Tuan Chen, Sijun Du, Emmanuelle Arroyo, Yu Jia and Ashwin A. Seshia, (2017), Shock reliability enhancement for MEMS vibration energy harvesters with nonlinear air damping as soft stopper, Journal of Micromechanics and Microengineering, http://doi.org/10.1088/1361-6439/aa82ed

2. Sijun Du, Yu Jia, Chun Zhao, Shao-Tuan. Chen and Ashwin A. Seshia, (2017), Real world evaluation of a self-startup SSHI rectifier for piezoelectric vibration energy harvesting, Sensors and Actuators A: Physical, http://doi.org/10.1016/j.sna.2017.07.050

3. Sijun Du, Yu Jia, Chun Zhao, Shao-Tuan Chen, Emmanuelle Arroyo, Boqian Sun and Ashwin A. Seshia, (2017), A New Electrode Design Method in Piezoelectric Vibration Energy Harvesters to Maximize Output Power, Sensors and Actuators A: Physical, http://doi.org/10.1016/j.sna.2017.06.026
 
4. Emmanuelle Arroyo, Yu Jia, Sijun Du, Shao-Tuan Chen and Ashwin A. Seshia, (2017), Experimental and theoretical study of a piezoelectric vibration energy harvester under high temperature, Journal of Microelectromechanical Systems,  http://doi.org/10.1109/JMEMS.2017.2723626

5. Sijun Du, Yu Jia and Ashwin A. Seshia, (2017), Piezoelectric Vibration Energy Harvesting: a Connection Configuration Scheme to Increase Operational Range and Output Power, Journal of Intelligent Material Systems and Structures, Vol. 28, No. 14 http://dx.doi.org/10.1177/1045389X16682846

6. Yu Jia, Sijun Du and Ashwin A. Seshia, (2016), Micromachined cantilevers-on-membrane topology for broadband vibration energy harvesting, Journal of Micromechanics and Microengineering, 26(2) http://doi.org/10.1088/0960-1317/26/12/124007

7. Sijun Du, Yu Jia, Cuong D. Do and Ashwin A. Seshia, (2016), An Efficient SSHI Interface with Increased Input Range for Piezoelectric Energy Harvesting Under Variable Conditions, IEEE Journal of Solid State Circuits, 51(11) http://doi.org/10.1109/JSSC.2016.2594943

8.  Yu Jia, Sijun Du and Ashwin A. Seshia, (2016), Twenty-Eight Orders of Parametric Resonance in a Microelectromechanical Device for Multi-band Vibration Energy Harvesting, Scientific Reports, http://dx.doi.org/10.1038/srep30167

9. Sijun Du, Yu Jia and Ashwin A. Seshia, (2016), An Efficient Inductor-less Dynamically Configured Interface Circuit for Piezoelectric Vibration Energy Harvesting, IEEE Transactions on Power Electronics, (in press.)  http://dx.doi.org/10.1109/TPEL.2016.2587757

10. Yu Jia and Ashwin A. Seshia, (2015), Power Optimisation by Mass Tuning for MEMS Piezoelectric Cantilever Vibration Energy Harvesting, IEEE Journal of Microelectromechanical Systems, Vol. 25, No. 1, pp. 108-117, http://dx.doi.org/10.1109/JMEMS.2015.2496346

11. Yu Jia, Cuong D. Do, Xudong Zou and Ashwin A. Seshia, (2015), A Hybrid Vibration Powered Microelectromechanical Strain Gauge, IEEE Sensors Journal, http://dx.doi.org/10.1109/JSEN.2015.2479295

12. Yu Jia and Ashwin A. Seshia, (2015), Five topologies of cantilever-based MEMS piezoelectric vibration energy harvesters: a numerical and experimental comparison, Microsystem Technologies, http://dx.doi.org/10.1007/s00542-015-2599-z

13. Yu Jia and Ashwin A. Seshia, (2014), An auto-parametrically excited vibration energy harvester, Sensor Actuator A: Physical,  Vol. 220, pp 69-75. http://dx.doi.org/10.1016/j.sna.2014.09.012

14. Ying Miao and Yu Jia, (2014), Hybrid Decentralised Energy for Remote Communities: Case Studies and the Analysis of the Potential Integration of Rain Energy, Journal of Sustainable Development of Energy, Water and Environment Systems, Vol. 2, No. 3, pp 243-258. (invited article) http://dx.doi.org/10.13044/j.sdewes.2014.02.0020

15. Yu Jia, Jize Yan, Kenichi Soga and Ashwin A. Seshia, (2014), Parametric resonance for vibration energy harvesting with design techniques to passively reduce the initiation threshold amplitude, Smart Materials and Structures, Vol. 23, No. 6, 13pp. http://dx.doi.org/10.1088/0964-1726/23/6/065011

16. Yu Jia, Jize Yan, Kenichi Soga and Ashwin A. Seshia, (2014), A parametrically excited vibration energy harvester, Journal of Intelligent Material Systems and Structures, Vol. 25, No. 3, pp. 278-289, http://dx.doi.org/10.1177/1045389X13491637

17. Yu Jia, Jize Yan, Kenichi Soga and Ashwin A. Seshia, (2013), Parametrically excited MEMS vibration energy harvesters with design approaches to overcome initiation threshold amplitude, Journal of Micromechanics and Microengineering, Vol. 23, No. 11, 10pp. (invited article, IOPselect, IOP PowerMEMS Collection, IOP Highlight of 2013 Collection) http://dx.doi.org/10.1088/0960-1317/23/11/114007

Archival International conference proceedings:

1. Maisie M. Snowdon, James Horne, Buck Gyr and Yu Jia, (2017), Feasibility of vibration energy harvesting powered wireless tracking of falcons in flight, PowerMEMS 2017, Kanazawa, Japan

2.  James Horne, Maisie M. Snowdon and Yu Jia, (2017), Using artificial gravity loaded nonlinear oscillators to harvest vibration within high g rotational systems, PowerMEMS 2017, Kanazawa, Japan

3. Yu Jia, Emanuelle Arroyo, Sijun Du and Ashwin A. Seshia, (2017), Interdigitated cantilever array topology for low frequency MEMS vibration energy harvesting, PowerMEMS 2017, Kanazawa, Japan

4. Sijun Du, Yu Jia, Emanuelle Arroyo and Ashwin A. Seshia, (2017), Rectified output power analysis of piezoelectric energy harvester arrays under noisy excitations, PowerMEMS 2017, Kanazawa, Japan

5. Lukas Kurmann, Yu Jia, Yiannos Manoli and Peter Woias, (2016), Magnetically Levitated Autoparametric Broadband Vibration Energy Harvesting, Journal of Physics Conference Series, 773(1), (PowerMEMS 2016) (Best Paper Award Finalist)

6. Lukas Kurmann, Yu Jia, Yiannos Manoli and Peter Woias, (2016), Rotary Bistable Vibration Energy Harvesting, Journal of Physics Conference Series, 773(1), (PowerMEMS 2016)

7. Emmanuelle Arroyo, Yu Jia, Sijun Du, Shao-Tuan Chen and Ashwin Seshia, (2016), High temperature performances of piezoelectric micro cantilever for vibration energy harvesting, Journal of Physics Conference Series, 773(1), (PowerMEMS 2016)

8. Shao-Tuan Chen, Sijun Du, Emmanuelle Arroyo, Yu Jia and Ashwin Seshia, (2016), Utilising nonlinear air damping as a soft mechanical stopper for MEMS vibration energy harvesting, PowerMEMS 2016, Journal of Physics Conference Series, 773(1), (PowerMEMS 2016)

9. Sijun Du, Shao-Tuan Chen, Yu Jia, Emmanuelle Arroyo and Ashwin Seshia, (2016), Connection configurations to increase operational range and output power of piezoelectric MEMS vibration energy harvesters, Journal of Physics Conference Series, 773(1), (PowerMEMS 2016)

10. Andrea Gaglione, David Rodenas-Herraiz, Yu Jia, Sarfraz Nawaz, Cecilia Mascolo, Kenichi Soga and Ashwin A. Seshia, (2016), Bridge structural monitoring through a vibration energy harvesting wireless sensor network, BuildSys

11. Yu Jia, Sijun Du and Ashwin A. Seshia, (2016), Eight Parametric Resonances in Multi-frequency wide-band MEMS piezoelectric vibration energy harvester, IEEE MEMS 2016, Shanghai, China, Jan 24-28.

12. Yu Jia, Jize Yan, Tao Feng, Sijun Du, Paul Fidler, Kenichi Soga, Campbell Middleton and Ashwin Seshia, (2015), A vibration powered wireless mote on the Forth Road Bridge, PowerMEMS 2015, Boston, USA, Dec 1-4. Journal of Physics, Vol. 660

13. Yu Jia, Sijun Du and Ashwin Seshia, (2015), Cantilevers-on-membrane desigh for broadband MEMS piezoelectric vibration energy, PowerMEMS 2015, Boston, USA, Dec 1-4, Journal of Physics, Vol. 660

14. Sijun Du, Yu Jia and Ashwin A. Seshia, (2015), Maximizing output power in a cantilevered piezoelectric vibration energy harvester by electrode, PowerMEMS 2015, Boston, USA, Dec 1-4. Journal of Physics, Vol. 660

15. S. T. Riches, K. Doyle, N. Tebbit, Y. Jia and A.A. Seshia, (2015), Assessment of MEMS Vibration Energy Harvesting for High Temperature Sensing Applications, International Conference and Exhibition on HiTEN (High Temperature Electronics Network), Cambridge, United Kingdom, July 6-8

16. Yu Jia and Ashwin A. Seshia, (2014), White Noise Responsiveness of an AlN Piezoelectric MEMS Cantilever Vibration Energy Harvester, PowerMEMS 2014, Awaji Island, Japan, November 18-21, Journal of Physics, Vol. 557, Conference Series 1, 5pp

17. Yu Jia and Ashwin A. Seshia, (2014), Comparison of Five Topologies of Cantilever-based MEMS Piezoelectric Vibration Energy Harvesters, PowerMEMS 2014, Awaji Island, Japan, November 18-21, Journal of Physics, Vol. 557, Conference Series 1, 5pp

18. Yu Jia, Jize Yan, Kenichi Soga and Ashwin A. Seshia, (2013), A Multi-frequency Operation of a MEMS vibration energy harvester by accessing five orders of parametric resonance, PowerMEMS 2013, Royal Society London, UK, December 3-6, Journal of Physics, Vol. 476, Conference Series 1, pp. 607-611. (Best Student Oral Presentation Award)

19. Ying Miao and Yu Jia, (2013), Decentralised energy and telecommunication infrastructure development for remote communities: case studies and suggestions, the 8th Conference on Sustainable Development of Energy, Water and Environment Systems (sponsored by UNESCO), September 22-27, Dubrovnik, Croatia

20. Yu Jia and Ashwin A. Seshia (2013), Directly and parametrically excited bi-stable vibration energy harvester for broadband operation, IEEE Transducer 2013, Barcelona, June 16-20, pp. 454-457.

21. Yu Jia, Jize Yan, Kenichi Soga and Ashwin A. Seshia, (2012), A MEMS parametrically excited vibration energy harvester, PowerMEMS 2012, Atlanta, Georgia, UK, December 2-5, pp.215-218

National conferences and workshops:

1. Maisie Snowdon and Yu Jia, (2017), Feasibility of piezoelectric vibration energy harvester powered wireless tracking of falcons, 7th EH-Network Dissemination Event, Manchester, 5 April (poster) - Best Poster Award

2. James Horne and Yu Jia, (2017), Harvesting nonlinear vibration within high g rotational systems, 7th EH-Network Dissemination Event, Manchester, 5 April (poster)

3.  Sijun Du, Yu Jia, Shao-Tuan Chen, Emmanuelle Arroyo and Ashwin A. Seshia, (2017), Connection Configurations to Increase Operational Range and Output Power of Piezoelectric Vibration Energy Harvesters, 7th EH-Network Dissemination Event, Manchester, 5 April (poster)
 
4. Yu Jia, Sijun Du and Ashwin A. Seshia (2015), Microelectromechanical vibration energy harvesting, Winton Symposium, University of Cambridge, 28 Sept (poster)

5. Sijun Du, Yu Jia and Ashwin A. Seshia, (2015), Enhancement of piezoelectric vibration energy harvester and interface circuit, 5th EH-Network Dissemination Event, London, 19 March (poster)

6. Yu Jia, (2013), Parametric resonance: a new paradigm for kinetic energy harvesting, Set for Britain, House of Commons, Parliament, London, 18 March (poster)

7. Yu Jia, Jize Yan, Felix Y. Zhou, Guoliang Ye,  Kenichi Soga  and Ashwin A. Seshia, (2012), Real world vibration energy harvesting for structural health monitoring, 2nd EH-Network Dissemination Event, London, 28 March (poster)

8. Yu Jia, (2011), Novel techniques to advance the performance of energy harvesting, Engineering Department Division C Transferable Skills Conference 2011, University of Cambridge, 27 May (poster)

9. Yu Jia, Zi Jing Wong, Jize Yan, Guoliang Ye, Ashwin A. Seshia and Kenichi Soga, (2011), Advancing the performance of energy harvesting for structural health monitoring, 1st EH-Network Dissemination Event, London, 7 February (poster)

Patents filed:

1. Sijun Du, Shao-Tuan Chen, Yu Jia and Ashwin A. Seshia, (filed April 2017), A topology for vibration-based energy harvesters, Application No: GB1706003.9

2. Sijun D, Yu Jia and Ashwin A. Seshia, (filed February 2016), Interface circuit for vibration-based energy harvester, Filing No: PCT/GB2017/050534

3. Yu Jia, Sijun Du and Ashwin A. Seshia, (filed July 2015), Vibration-Based Energy Harvester with Strain Optimised Topology, Application No: GB 1512456.3

4. Yu Jia, Jize Yan, Kenichi Soga and Ashwin A. Seshia, (filed May 2012), Energy harvesting apparatus and method, United States Patent Application US61/651867 (International Application WO2013/175449 A3)