Biography

Dr. Haijun Liu is an Assistant Professor in the Department of Mechanical Engineering at Temple University. He earned his Ph.D. in Mechanical Engineering from University of Maryland, College Park (UMD) in 2012. Prior to joining Temple University, he was a post-doctoral Research Associate at the National Institute of Standards and Technology (Gaithersburg, MD) and UMD. His area of expertise is in the fundamental science of sensor technology and its applications. In particular, his research focuses on employing new sensing mechanisms inspired by nature, engineering advanced metamaterials, and developing a solid understanding of the pertinent mechanics. Dr. Liu was a Future Faculty Fellow at the A. James Clark School of Engineering of UMD in 2009-2010.

Labs: Listen Lab

Research Interests

  • Bio-Inspired Sensing & Bio-Mechanics
  • Acoustic Metamaterials
  • Theoretical & Experimental Mechanics
  • Shock Wave & Dynamic Pressure Measurement
  • Fiber Optic & MEMS Sensors for Various Applications

Courses Taught

Number

Name

Level

ENGR 1102

Introduction to Engineering Problem Solving

Undergraduate

ENGR 2332

Engineering Dynamics

Undergraduate

MEE 4422

Mechanical Vibrations

Undergraduate

Selected Publications

  • Song, X. & Liu, H. (2021). Free Vibration of Bistable Clamped-Clamped Beams: Modeling and Experiment. Journal of Vibration and Acoustics, Transactions of the ASME, 143(4). doi: 10.1115/1.4048553

  • Chi, Y., Tang, Y., Liu, H., & Yin, J. (2020). Leveraging Monostable and Bistable Pre-Curved Bilayer Actuators for High-Performance Multitask Soft Robots. Advanced Materials Technologies, 5(9). doi: 10.1002/admt.202000370

  • Dong, Q., Song, X., & Liu, H. (2020). Effects of Air Cavity in Dynamic Pressure Sensors: Experimental Validation. Sensors (Basel), 20(6). Switzerland. doi: 10.3390/s20061759

  • Islam, S., Song, X., Choi, E.T., Kim, J., Liu, H., & Kim, A. (2020). In Vitro Study on Smart Stent for Autonomous Post-Endovascular Aneurysm Repair Surveillance. IEEE Access, 8, pp. 96340-96346. doi: 10.1109/ACCESS.2020.2996506

  • Song, X. & Liu, H. (2020). Free vibration of bistable clamped-clamped beams: A preliminary study. Proceedings of the ASME Design Engineering Technical Conference, 7. doi: 10.1115/DETC2020-22560

  • Dong, Q., Song, X., Ray, S., & Liu, H. (2020). Acoustic metamaterial with air-backed diaphragm for broadband absorption: A preliminary study. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 1. doi: 10.1115/IMECE2020-23928

  • Dong, Q., Bae, H., Zhang, Z., Chen, Y., Wen, Z., Olson, D.A., Yu, M., & Liu, H. (2019). Miniature Fiber Optic Acoustic Pressure Sensors With Air-Backed Graphene Diaphragms. J Vib Acoust, 141. United States. doi: 10.1115/1.4042929

  • Hanson, E., Olson, D., Liu, H., Ahmed, Z., & Douglass, K.O. (2018). Towards Traceable Transient Pressure Metrology. Metrologia, 55(2), pp. 275-283. England. doi: 10.1088/1681-7575/aaad1b

  • Chen, Y., Liu, H., Zhang, Z., Gupta, A.K., & Yu, M. (2017). Planar photonic crystal based multifunctional sensors: erratum. Appl Opt, 56(31), p. 8663. United States. doi: 10.1364/AO.56.008663

  • Chen, Y., Liu, H., Zhang, Z., Gupta, A.K., & Yu, M. (2017). Planar photonic crystal based multifunctional sensors: publisher's note. Appl Opt, 56(9), p. 2397. United States. doi: 10.1364/AO.56.002397

  • Chen, Y., Liu, H., Zhang, Z., Gupta, A.K., & Yu, M. (2017). Planar photonic crystal based multifunctional sensors. Appl Opt, 56(6), pp. 1775-1780. United States. doi: 10.1364/AO.56.001775

  • Sterbing-D'Angelo, S.J., Liu, H., Yu, M., & Moss, C.F. (2016). Morphology and deflection properties of bat wing sensory hairs: scanning electron microscopy, laser scanning vibrometry, and mechanics model. Bioinspir Biomim, 11(5), p. 056008. England. doi: 10.1088/1748-3190/11/5/056008

  • Ganye, R., Chen, Y., Liu, H., Bae, H., Wen, Z., & Yu, M. (2016). Characterization of wave physics in acoustic metamaterials using a fiber optic point detector. Applied Physics Letters, 108(26). doi: 10.1063/1.4955058

  • Zhang, Z., Chen, Y., Liu, H., Bae, H., Olson, D.A., Gupta, A.K., & Yu, M. (2015). On-fiber plasmonic interferometer for multi-parameter sensing. Opt Express, 23(8), pp. 10732-10740. United States. doi: 10.1364/OE.23.010732

  • Liu, H., Olson, D.A., Douglass, K.O., & Yu, M. (2015). Fiber optic graphene sensors for dynamic pressure measurements. Optical Sensors, Sensors 2015, p. 316p. doi: 10.1364/SENSORS.2015.SeS4C.3

  • Liu, H., Olson, D.A., & Yu, M. (2014). Modeling of an air-backed diaphragm in dynamic pressure sensors: Effects of the air cavity. Journal of Sound and Vibration, 333(25), pp. 7051-7075. doi: 10.1016/j.jsv.2014.07.004

  • Chen, Y., Liu, H., Reilly, M., Bae, H., & Yu, M. (2014). Enhanced acoustic sensing through wave compression and pressure amplification in anisotropic metamaterials. Nat Commun, 5, p. 5247. England. doi: 10.1038/ncomms6247

  • Bae, H., Yun, D., Liu, H., Olson, D.A., & Yu, M. (2014). Hybrid miniature fabry-perot sensor with dual optical cavities for simultaneous pressure and temperature measurements. Journal of Lightwave Technology, 32(8), pp. 1585-1593. doi: 10.1109/JLT.2014.2308060

  • Liu, H., Currano, L., Gee, D., Helms, T., & Yu, M. (2013). Understanding and mimicking the dual optimality of the fly ear. Sci Rep, 3, p. 2489. England. doi: 10.1038/srep02489

  • Sawaqed, L., Liu, H., & Yu, M. (2012). Robotic sound source localization using bio-inspired acoustic sensors. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 4(PARTS A AND B), pp. 57-65. doi: 10.1115/IMECE2012-89561

  • Liu, H. & Yu, M. (2011). Effects of air cavity on fly-ear inspired directional microphones: A numerical study. Proceedings of SPIE - the International Society for Optical Engineering, 7981. doi: 10.1117/12.880619

  • Lisiewski, A.P., Liu, H.J., Yu, M., Currano, L., & Gee, D. (2011). Fly-ear inspired micro-sensor for sound source localization in two dimensions. J Acoust Soc Am, 129(5), pp. EL166-EL171. United States. doi: 10.1121/1.3565473

  • Lisiewski, A.P., Liu, H., & Yu, M. (2010). FLY EAR inspired miniature sound source localization sensor: Localization in two dimensions. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 10, pp. 339-344. doi: 10.1115/IMECE2010-40741

  • Gee, D., Liu, H., Currano, L., & Yu, M. (2010). Enhanced directional sensitivity of a biomimetic MEMS acoustic localization sensor. Proceedings of SPIE - the International Society for Optical Engineering, 7682. doi: 10.1117/12.850418

  • Liu, H. & Yu, M. (2010). A new approach to tackle noise issue in miniature directional microphones: Bio-inspired mechanical coupling. Proceedings of SPIE - the International Society for Optical Engineering, 7647. doi: 10.1117/12.847820

  • Bae, H., Zhang, X.M., Liu, H., & Yu, M. (2010). Miniature surface-mountable Fabry-Perot pressure sensor constructed with a 45 degrees angled fiber. Opt Lett, 35(10), pp. 1701-1703. United States. doi: 10.1364/OL.35.001701

  • Liu, H., Zhang, X., & Yu, M. (2009). Understanding fly-ear inspired directional microphones. Proceedings of SPIE - the International Society for Optical Engineering, 7292(PART 1). doi: 10.1117/12.817703

  • Currano, L.J., Liu, H., Gee, D., Yang, B., & Yu, M. (2009). Microscale implementation of a bio-inspired acoustic localization device. Proceedings of SPIE - the International Society for Optical Engineering, 7321. doi: 10.1117/12.821675

  • Liu, H., Currano, L., Gee, D., Yang, B., & Yu, M. (2009). Fly-ear inspired acoustic sensors for gunshot localization. Proceedings of SPIE - the International Society for Optical Engineering, 7321. doi: 10.1117/12.821212

  • Liu, H.J., Yu, M., Currano, L., & Gee, D. (2009). Fly-ear inspired miniature directional microphones: Modeling and experimental study. ASME International Mechanical Engineering Congress and Exposition, Proceedings, 12(PART A), pp. 271-276. doi: 10.1115/IMECE2009-11772

  • Liu, H.J., Yu, M., & Zhang, X.M. (2008). Biomimetic optical directional microphone with structurally coupled diaphragms. Applied Physics Letters, 93(24). doi: 10.1063/1.3043724

  • Liu, H., Chen, Z., & Yu, M. (2008). Biology-inspired acoustic sensors for sound source localization. Proceedings of SPIE - the International Society for Optical Engineering, 6932. doi: 10.1117/12.776519