Paul I. Ro Patil, V. C., Acharya, P., & Ro, P. I. (2020). Experimental investigation of water spray injection in liquid piston for near-isothermal compression. APPLIED ENERGY, 259. https://doi.org/10.1016/j.apenergy.2019.114182 Patil, V. C., & Ro, P. I. (2020). Experimental study of heat transfer enhancement in liquid piston compressor using aqueous foam. APPLIED THERMAL ENGINEERING, 164. https://doi.org/10.1016/j.applthermaleng.2019.114441 Patil, V. C., Acharya, P., & Ro, P. I. (2019). Experimental investigation of heat transfer in liquid piston compressor. APPLIED THERMAL ENGINEERING, 146, 169–179. https://doi.org/10.1016/j.applthermaleng.2018.09.121 Bhaskaran, H. S., Ro, P., Park, J.-K., & Ramakrishnan, K. R. (2017). Analysis of a Novel Technique for Temperature Rise Abatement in Liquid Piston Compressors-External Gas Injection. JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 9(2). https://doi.org/10.1115/1.4035969 Patil, V. C., & Ro, P. I. (2017). Comparative assessment of different types of ocean compressed air energy storage systems based on exergy analysis. Proceedings of the ASME Power Conference Joint with ICOPE-17, 2017, vol 2. https://doi.org/10.1115/power-icope2017-3630 Patil, V. C., Ro, P. I., & Ranganath, K. R. (2016). End-To-End Efficiency of Liquid Piston based Ocean Compressed Air Energy Storage. OCEANS 2016 MTS/IEEE MONTEREY. https://doi.org/10.1109/oceans.2016.7761399 Ramakrishnan, K. R., Ro, P. I., & Patil, V. C. (2016). Temperature Abatement Using Hollow Spheres in Liquid Piston Compressor for Ocean Compressed Air Energy Storage System. OCEANS 2016 MTS/IEEE MONTEREY. https://doi.org/10.1109/oceans.2016.7761341 Kim, J., & Ro, P. I. (2015). Feasibility Study on Thermoacoustic Cooling for Low-Power Handheld Electronic Devices. JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 7(2). https://doi.org/10.1115/1.4029351 Kim, J., & Ro, P. I. (2015). Forced Convection Cooling of Low-Power Handheld Devices Using a Vibrating Cantilever Beam. JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 7(2). https://doi.org/10.1115/1.4029677 Park, J., Ro, P., He, X., & Mazzoleni, A. (2014). Analysis, Fabrication, and Testing of a Liquid Piston Compressor Prototype for an Ocean Compressed Air Energy Storage (OCAES) System. Marine Technology Society Journal, 48(6), 86–97. https://doi.org/10.4031/mtsj.48.6.3 Lim, S. D., Mazzoleni, A. P., Park, J.-kyoo, Ro, P. I., & Quinlan, B. (2013). Conceptual Design of Ocean Compressed Air Energy Storage System. MARINE TECHNOLOGY SOCIETY JOURNAL, 47(2), 70–81. https://doi.org/10.4031/mtsj.47.2.5 Park, J.-kyoo, & Ro, P. I. (2013). Noncontact Manipulation of Light Objects Based on Parameter Modulations of Acoustic Pressure Nodes. JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, 135(3). https://doi.org/10.1115/1.4023816 Park, J. K., Ro, P. I., Lim, S. D., Mazzoleni, A. P., & Quinlan, B. (2012). Analysis and optimization of a quasi-isothermal compression and expansion cycle for Ocean Compressed Air Energy Storage (OCAES). 2012 Oceans. https://doi.org/10.1109/oceans.2012.6404964 Lim, S. D., Mazzoleni, A. P., Park, J. K., Ro, P. I., & Quinlan, B. (2012). Conceptual design of ocean compressed air energy storage system. 2012 Oceans. https://doi.org/10.1109/oceans.2012.6404909 Qin, Q., Xu, F., Cao, Y., Ro, P. I., & Zhu, Y. (2012). Measuring True Young's Modulus of a Cantilevered Nanowire: Effect of Clamping on Resonance Frequency. Small, 8(16), 2571–2576. https://doi.org/10.1002/smll.201200314 Choi, H.-S., Kim, T.-H., Moon, W.-J., & Ro, P. I. (2009). Study on a ultra-light dual revolute manipulator with high joint torque. INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, 10(4), 49–56. https://doi.org/10.1007/s12541-009-0070-8 Panusittikorn, W., & Ro, P. I. (2008). Modeling and control of a magnetostrictive tool servo system. JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, 130(3). https://doi.org/10.1115/1.2837432 Wan, Q., Wu, T., Chastain, J., Roberts, W. L., Kuznetsov, A. V., & Ro, P. I. (2005). Forced convective cooling via acoustic streaming in a narrow channel established by a vibrating piezoelectric bimorph. FLOW TURBULENCE AND COMBUSTION, 74(2), 195–206. https://doi.org/10.1007/s10494-005-4132-4 Wu, T., & Ro, P. I. (2005). Heat transfer performance of a cooling system using vibrating piezoelectric beams. JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 15(1), 213–220. https://doi.org/10.1088/0960-1317/15/1/030 Gutierrez, H. M., & Ro, P. I. (2005). Magnetic servo levitation by sliding-mode control of nonaffine systems with algebraic input invertibility. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 52(5), 1449–1455. https://doi.org/10.1109/TIE.2005.855651 Wu, T., & Ro, P. I. (2004). Dynamic peak amplitude analysis and bonding layer eiiects of piezoelectric bimorph cantilevers. SMART MATERIALS AND STRUCTURES, 13(1), 203–210. https://doi.org/10.1088/0964-1726/13/1/024 Panusittikorn, W., Lee, M. C., & Ro, P. I. (2004). Modeling and sliding-mode control of friction-based object transport using two-mode ultrasonic excitation. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 51(4), 917–926. https://doi.org/10.1109/TIE.2004.831761 Wu, T., Ro, P. I., Kingon, A. I., & Mulling, J. F. (2003). Piezoelectric resonating structures for microelectronic cooling. Smart Materials & Structures, 12(2), 181–187. https://doi.org/10.1088/0964-1726/12/2/304 Loh, B. G., Hyun, S., Ro, P. I., & Kleinstreuer, C. (2002). Acoustic streaming induced by ultrasonic flexural vibrations and associated enhancement of convective heat transfer. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 111(2), 875–883. https://doi.org/10.1121/1.1433811 Kim, C., & Ro, P. I. (2002). An accurate full car ride model using model reducing techniques. JOURNAL OF MECHANICAL DESIGN, 124(4), 697–705. https://doi.org/10.1115/1.1503065 Ro, P. I., & Loh, B. G. (2001, February). Feasibility of using ultrasonic flexural waves as a cooling mechanism. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, Vol. 48, pp. 143–150. https://doi.org/10.1109/41.904574 Loh, B. G., & Ro, P. I. (2000). An object transport system using flexural ultrasonic progressive waves generated by two-mode excitation. IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 47(4), 994–999. https://doi.org/10.1109/58.852083 Loh, B. G., & Ro, P. I. (2000, November 16). Changing the propagation direction of flexural ultrasonic progressive waves by modulating excitation frequency. https://doi.org/10.1006/jsvi.2000.3013 Ro, P. I., & Loh, B. G. (2000). Feasibility of contact and non-contact approaches to material handling using traveling waves and transition characteristics. IEEE Transactions on Industrial Electronics, 47(6), 1134–1135. Ro, P. I. (2000). Reduced order modeling and parameter estimation for quarter car suspension system. Journal of Automobile Engineering, 214(D), 851–864. https://doi.org/10.1177/095440700021400804 Kim, C., & Ro, P. I. (2000). Reduced-order modelling and parameter estimation for a quarter-car suspension system. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 214(D8), 851–864. https://doi.org/10.1243/0954407001527907 Ro, P. I., Shim, W., & Jeong, S. (2000). Robust friction compensation for submicrometer positioning and tracking for a ball-screw-driven slide system. PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY, 24(2), 160–173. https://doi.org/10.1016/S0141-6359(00)00030-1 Hong, D. H., & Ro, P. I. (2000). The law of large numbers for fuzzy numbers with unbounded supports. FUZZY SETS AND SYSTEMS, 116(2), 269–274. https://doi.org/10.1016/S0165-0114(98)00188-2 Kim, C., Ro, P. I., & Kim, H. (1999). Effect of the suspension structure on equivalent suspension parameters. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 213(D5), 457–470. https://doi.org/10.1243/0954407991527026 Kim, C., & Ro, P. I. (1998). A sliding mode controller for vehicle active suspension systems with non-linearities. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 212(D2), 79–92. https://doi.org/10.1243/0954407981525812 Yih, C. C., & Ro, P. I. (1998). Nonlinear optimization-based motion planning of nonholonomic systems using an iterative algorithm. Intelligent Automation and Soft Computing, 4(3), 227–239. https://doi.org/10.1080/10798587.1998.10750733 Gutierrez, H. M., & Ro, P. I. (1998). Parametric modeling and control of a long-range actuator using magnetic servo levitation. IEEE TRANSACTIONS ON MAGNETICS, 34(5), 3689–3695. https://doi.org/10.1109/20.718530 Gutierrez, H. M., & Po, P. I. (1998). Sliding-mode control of a nonlinear-input system: Application to a magnetically levitated fast-tool servo. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 45(6), 921–927. https://doi.org/10.1109/41.735336 Lee, B. R., & Ro, P. I. (1994). Path finding and grasp planning for robotic assembly. Robotica, 12(4), 353–360. https://doi.org/10.1017/S0263574700017379