Publications

Journal Papers Published

* Indicates Highly Qualified Personnel trained at TF-LAB

  1. *K. Alrefaey, J. Swift, R. Kempers (2025) “Influence of flow attack angle on the heat transfer and pressure drop of hook-shaped fins and dimples” International Journal of Heat and Mass Transfer, 253, 127626. https://doi.org/10.1016/j.ijheatmasstransfer.2025.127626

  2. *Ahmed Azzam, R. Kempers, A. Amirfazli (2025) “Modelling of the Evaporation of a Pair of Sessile Droplets on a Heated Substrate” Physics of Fluids, 27, https://doi.org/10.1063/5.0253768

  3. M. Hasan, *R. Perna, *A. Elkholy, J. Durfee, R. Kempers (2025) “A Lightweight Additively Manufactured Two-Phase Integrated Natural Convection Heat Sink” Applied Thermal Engineering, 266, 125700. https://doi.org/10.1016/j.applthermaleng.2025.125700

  4. *K. Alrefaey, *O. Khaled, J. Swift, R. Kempers (2025) “Experimental Investigation of the Thermal–Hydraulic Performance of Hook-Shaped Fins and Dimples” International Journal of Heat and Mass Transfer, 240, 126640. https://doi.org/10.1016/j.ijheatmasstransfer.2024.126640

  5. *K. Narwal, R. Kempers, P.G. O’Brien “Enhanced Energy Storage Density in Thermal Energy Storage Systems Simultaneously Heated with Solar Radiation and Industrial Waste Heat” Results in Engineering, 25, 103792. https://doi.org/10.1016/j.rineng.2024.103792

  6. *M. Hasan, *A. Elkholy, *M. Narvan, J. Durfee, R. Kempers (2024) “Capillary Performance of Strut-Based Lattice Wicks Fabricated Using Laser Powder Bed Fusion” International Communications in Heat and Mass Transfer, 159, 108227. https://doi.org/10.1016/j.icheatmasstransfer.2024.108227

  7. *K. Narwal, S. Farsad, R. Kempers, †P.G. O’Brien (2024) “Adsorption-Based Thermal Energy Storage Using Zeolites for Mobile Heat Transfer” Energy Storage, https://doi.org/10.1002/est2.70041

  8. *A. Azzam, R. Kempers, A. Amirfazli, (2024) “Modeling of the Evaporation Process of a Pair of Sessile Droplets Using a Point Source Model (PSM)” International Communications in Heat and Mass Transfer, 157, 107733. https://doi.org/10.1016/j.icheatmasstransfer.2024.107733

  9. *M. Saleh, *Sinan Olcun, *Mohamed Karam, R. Kempers, G.W. Melenka (2024) “High Stiffness 3D-Printed Continuous Pitch Carbon Fiber Reinforced Polymer Composites” Journal of Composite Materials, 58, pp.1873-1886. https://doi.org/10.1177/00219983241249526

  10. *K. Narwal, F. Massah, R. Kempers, P.G. O’Brien (2024) “An Experimental Comparison of Directly and Indirectly Radiated Adsorbent Beds Integrated with Solar Thermal Collectors” Energy Storage, 6. http://dx.doi.org/10.1002/est2.623

  11. *Sinan Olcun, *A.Elkholy, R. Kempers (2024) “High Thermal Conductivity Continuous Pitch Carbon Fiber 3D-Printed using a 6-Axis Robotic Arm” Progress in Additive Manufacturing. https://doi.org/10.1007/s40964-024-00568-2

  12. *A. Elkholy, *M. Narvan, S. Thompson, J. Durfee, R. Kempers (2024) “The Effect of Layer Thickness on the Geometry and Capillary Performance of Strut-Based Heat Pipe Wicks Manufactured by Laser Powder Bed Fusion” International Journal of Thermofluids, 21, 100543. https://doi.org/10.1016/j.ijft.2023.100543

  13. *Milad Shakeri Bonab, Daniel Wijnperle, Frieder Mugele, R. Kempers, A. Amirfazli (2024) “Electrowetting Assisted Shedding of Droplets by a Shearing Airflow in Dropwise Condensation” International Journal of Heat and Mass Transfer, 220, 124925. https://doi.org/10.1016/j.ijheatmasstransfer.2023.124925

  14. *A. Elkholy, *M. Bardoel, J. Durfee, R. Kempers (2023) “A mass rate-of-rise model for additively manufactured wick structures” International Communications in Heat and Mass Transfer, 146, 106934. https://doi.org/10.1016/j.icheatmasstransfer.2023.106934

  15. *M. Saleh, *A. Elkholy, G.W. Melenka, R. Kempers (2023) “Heat Flux Measurement using 3D-Printed Continuous Wire Polymer Composite Sensors” Case Studies in Thermal Engineering, 42, 102739. https://doi.org/10.1016/j.csite.2023.102739

  16. *A. Elkholy, J. Durfee, J.P. Mooney, A.J. Robinson, R. Kempers (2023) “A Rate of Rise Facility for Measuring Properties of Wick Structures” Measurement Science and Technology, 34, 045301. https://doi.org/10.1088/1361-6501/acad1c

  17. *A. Elkholy, J. Swift, R. Kempers (2023) “Improvement of Pool Boiling Heat Transfer using Hook-Shaped Structures” Applied Thermal Engineering, 219, 119665. https://doi.org/10.1016/j.applthermaleng.2022.119665

  18. *S. Olcun, *Y. Ibrahim, *C. Isaacs, *M. Karam, *A. Elkholy, R. Kempers (2022) “Thermal Conductivity of 3D-Printed Continuous Pitch Carbon Fiber Composites” Additive Manufacturing Letters, 4, 100106. https://doi.org/10.1016/j.addlet.2022.100106

  19. *Milad Shakeri Bonab, Christophe Minetti, Carlo Saverio Iorio, Zhao Dongdong, Qiu-Sheng Liu, Junfang Ou, R. Kempers, Alidad Amirfazli (2022) “Experimental Investigation of Dropwise Condensation Shedding by Shearing Airflow in Microgravity Using Different Surface Coatings” Langmuir. https://doi.org/10.1021/acs.langmuir.2c01898

  20. *O. Khaled, J. Swift, R. Kempers (2022) “Thermal enhancement of rectangular channels using hook-shaped fins and dimples” Applied Thermal Engineering, 217, 119272. https://doi.org/10.1016/j.applthermaleng.2022.119272

  21. *M. Saleh, R. Kempers, G.W. Melenka (2022) “Fatigue Behaviour and Electromechanical Properties of Additively Manufactured Continuous Wire Polymer Composites for Structural Health Monitoring” Fatigue and Fracture of Engineering Materials and Structures, 45 (9), pp. 2630-2645. https://doi.org/10.1111/ffe.13778

  22. A.J. Robinson, J. Colenbrander, D. Carballo, T. Deaville, J. Durfee, R. Kempers (2022) “Simplified Methods for Characterizing Thermal Parameters of High-Power Automotive LEDs” Case Studies in Thermal Engineering, 35, 102157. https://doi.org/10.1016/j.csite.2022.102157

  23. *A. Elkholy, Paul Quinn, Sinéad M. Uí Mhurchadha, Ramesh Raghavendra, R. Kempers (2021) “Characterization and Analysis of the Thermal Conductivity of AlSi10Mg Fabricated by Laser Powder Bed Fusion” Journal of Manufacturing Science and Engineering, 144 (10), 101001. https://doi.org/10.1115/1.4054491

  24. *A. Elkholy, R. Kempers (2022) “An Accurate Steady-State Approach for Characterizing the Thermal Conductivity of Additively Manufactured Polymer Composites” Case Studies in Thermal Engineering, 31, 101829. https://doi.org/10.1016/j.csite.2022.101829

  25. *Y. Ibrahim, R. Kempers, (2022) “Effective Thermal Conductivity of 3D-Printed Continuous Wire Polymer Composites” Progress in Additive Manufacturing, 7, pp. 699-712, https://doi.org/10.1007/s40964-021-00256-5

  26. *A. Elkholy, *C. Unlusoy, R. Kempers (2022) “Thermal Performance of a Two-Phase Loop Thermosyphon with an Additively Manufactured Evaporator” Applied Thermal Engineering, 202, pp. 117692. https://doi.org/10.1016/j.applthermaleng.2021.117692

  27. A.J. Robinson, J. Colenbrander, T. Deaville, J. Durfee, R. Kempers (2021) “A Wicked Heat Pipe Fabricated Using Metal Additive Manufacturing” International Journal of Thermofluids, 12, pp. 100117, https://doi.org/10.1016/j.ijft.2021.100117

  28. *M. Saleh, R. Kempers, G.W. Melenka (2021) “A Comparative Study on the Electromechanical Properties of 3D-Printed Rigid and Flexible Continuous Wire Polymer Composites for Structural Health Monitoring” Sensors and Actuators A: Physical, 328, pp. 112764. https://doi.org/10.1016/j.sna.2021.112764

  29. *M. Shakeri-Bonab, R. Kempers, A. Amirfazli (2021) “Determining Transient Heat Transfer Coefficient for Dropwise Condensation in the Presence of an Air flow” International Journal of Heat and Mass Transfer, 173, pp. 121278. https://doi.org/10.1016/j.ijheatmasstransfer.2021.121278

  30. *A. Elkholy, R. Kempers (2020) “Experimental Investigation of Geyser Boiling in a Small Diameter Two-Phase Loop Thermosyphon” Experimental Thermal and Fluid Science, 118, pp. 110170. https://doi.org/10.1016/j.expthermflusci.2020.110170

  31. †A. Robinson, J. Colenbrander, G. Byrne, P. Burke, J. McEvoy, R. Kempers (2020) “Passive Two-Phase Cooling of Air Circuit Breakers in Data Center Power Distribution Systems” International Journal of Electrical Power & Energy Systems, 121, pp. 106138. https://doi.org/10.1016/j.ijepes.2020.106138

  32. †R. Kempers, J. Colenbrander, W. Tan, R. Chen, A.J. Robinson (2020) “Experimental Characterization of a Hybrid Impinging Microjet-Microchannel Heat Sink Fabricated using High-Volume Metal Additive Manufacturing” International Journal of Thermofluids, 5-6, pp.100029. https://doi.org/10.1016/j.ijft.2020.100029

  33. *A. Elkholy, †R. Kempers (2020) “Enhancement of Pool Boiling Heat Transfer using 3D-Printed Polymer Fixtures” Experimental Thermal and Fluid Science, 114, pp. 110056. https://doi.org/10.1016/j.expthermflusci.2020.110056

  34. *Y. Ibrahim, *A. Elkholy, J. Schofield, G.W. Melenka, R. Kempers (2020) “Effective Thermal Conductivity of 3D-Printed Continuous Fiber Polymer Composites” Advanced Manufacturing: Polymer and Composites Science, 6, pp.17-28. https://doi.org/10.1080/20550340.2019.1710023

  35. *A. Elkholy, M. Rouby, R. Kempers (2019) “Characterization of the Anisotropic Thermal Conductivity of Additively Manufactured Components by Fused Filament Fabrication” Progress in Additive Manufacturing, 4, 497-515. https://doi.org/10.1007/s40964-019-00098-2

  36. *Y. Ibrahim, R. Kempers, A. Amirfazli (2019) “3D Printed Electro-Thermal Anti- or De-Icing System for Composite Panels” Cold Regions Science and Technology, 166, pp. 102844. https://doi.org/10.1016/j.coldregions.2019.102844

  37. *Y. Ibrahim, G.W. Melenka, R. Kempers (2019) “Flexural Properties of Three-Dimensional Printed Continuous Wire Polymer Composites” Materials Science and Technology, 35, pp.1471-1482. https://doi.org/10.1080/02670836.2019.1630085

  38. *M. Saleh, R. Kempers, G.W. Melenka (2019) “3D Printed Continuous Wire Polymer Composites Strain Sensors for Structural Health Monitoring” Smart Materials and Structures, 28, pp. 105041. https://doi.org/10.1088/1361-665X/aafdef

  39. *A. Elkholy, H. Sadek, R. Kempers, (2019) “An Improved Transient Plane Source Technique and Methodology for Measuring the Thermal Properties of Anisotropic Materials” International Journal of Thermal Science, 135, pp.362-374. https://doi.org/10.1016/j.ijthermalsci.2018.09.021

  40. *Y. Ibrahim, G. W. Melenka, R. Kempers, (2018) “Fabrication and tensile testing of 3D printed continuous wire polymer composites”, Rapid Prototyping Journal, 24, pp.1131-1141. https://doi.org/10.1108/RPJ-11-2017-0222

  41. *Y. Ibrahim, G.W. Melenka, R. Kempers (2018) “Additive Manufacturing of Continuous Wire Polymer Composites” Manufacturing Letters, 16, pp. 49-51. https://doi.org/10.1016/j.mfglet.2018.04.001

  42. A.J. Robinson, J. Colenbrander, R. Kempers, R. Chen (2018) “Solid and Vapour Chamber Integrated Heat Spreaders: Which to Choose and Why” IEEE Transactions on Components, Packaging and Manufacturing Technology, 8, pp.1581-1592. https://doi.org/10.1109/TCPMT.2018.2822400

  43. †A.J. Robinson, R. Kempers, J. Colenbrander, N. Bushnell, R. Chen (2018) “A Single Phase Hybrid Micro Heat Sink Using Impinging Micro-Jet Arrays and Microchannels” Applied Thermal Engineering, 136, pp. 408-418. https://doi.org/10.1016/j.applthermaleng.2018.02.058

  44. *K. Smith, R. Kempers, A.J. Robinson (2018) “Confinement and Vapour Production Rate Influences in Closed Two-Phase Reflux Thermosyphons Part A: Flow Regimes” International Journal of Heat and Mass Transfer, 119, pp. 907-921. https://doi.org/10.1016/j.ijheatmasstransfer.2017.10.049

  45. *K. Smith, A.J. Robinson, R. Kempers (2018) “Confinement and Vapour Production Rate Influences in Closed Two Phase Reflux Thermosyphons Part B: Heat Transfer” International Journal of Heat and Mass Transfer, 120, pp. 1241-1254. https://doi.org/10.1016/j.ijheatmasstransfer.2017.12.046

  46. C. de Brún, R. Jenkins, T. Lupton, R. Lupoi, R. Kempers, A.J. Robinson, (2017) “Confined Jet Array Impingement Boiling” Experimental Thermal and Fluid Science, 86, pp. 224-234. https://doi.org/10.1016/j.expthermflusci.2017.04.002

  47. R. Jenkins, R. Lupoi, R. Kempers, A.J. Robinson, (2017) “Heat Transfer Performance of Boiling Jet Array Impingement on Micro-Grooved Surfaces” Experimental Thermal and Fluid Science, 80, pp. 293-304. https://doi.org/10.1016/j.expthermflusci.2016.08.006

  48. R. Jenkins, C. de Brún, R. Kempers, R. Lupoi, A.J. Robinson (2016) “Thermal-hydraulic performance of convective boiling jet array impingement” Journal of Physics: Conference series, 745, pp.032120, https://doi.org/10.1088/1742-6596/745/3/032120

  49. E.V. Sempels, R. Kempers, F.J. Lesage, (2016) “Load-bearing Figure-of-Merit Characterization of a Thermoelectric Module” IEEE Transactions on Components, Packaging and Manufacturing Technology, 6, pp. 50-57, https://doi.org/10.1109/TCPMT.2015.2501321

  50. A.J. Robinson, A.M. Lyons, R. Kempers, (2016) “Modelling the Effective Thermal Conductivity of Compressing Structures Including Contact Resistance” Simulation Modelling Practice and Theory, 67, pp. 74-88, https://doi.org/10.1016/j.simpat.2016.06.003

  51. *K. Smith, G. Byrne, R. Kempers, A.J. Robinson (2016) “Electrohydrodynamic Augmentation of a Reflux Thermosyphon” Experimental Thermal and Fluid Science, 79, pp. 175-186, https://doi.org/10.1016/j.expthermflusci.2016.07.003

  52. *K. Smith, *S. Siedel, A.J. Robinson, R. Kempers, (2016) “The Effects of Bend Angle and Fill Ratio on the Performance of a Naturally Aspirated Thermosyphon,” Applied Thermal Engineering, 101, pp. 455-467, https://doi.org/10.1016/j.applthermaleng.2016.01.024

  53. R. Kempers, A. Lyons & A.J. Robinson, (2014) “Modeling and Experimental Characterization of Metal Micro-Textured Thermal Interface Materials” Journal of Heat Transfer, 136, pp. 011301-1-011301-11 https://doi.org/10.1115/1.4024737

  54. *K. Smith, *S. Siedel, A.J. Robinson, R. Kempers, (2014) “Visual Study of Fluid Dynamics in Wickless Transparent Heat Pipes” Heat Pipe Science and Technology, An International Journal, 5, pp. 161-167. https://doi.org/10.1615/HeatPipeScieTech.v5.i1-4.150

  55. *K. Smith, *S. Siedel, A.J. Robinson, R. Kempers, (2014) “Investigation of Thermosyphon Performance with Changing Adiabatic Section Geometry” Heat Pipe Science and Technology, An International Journal, 5, pp. 231-236. https://doi.org/10.1615/HeatPipeScieTech.v5.i1-4.240

  56. R. Kempers, P. Ahern, A.J. Robinson, A.M. Lyons, (2012) “Modeling the Compressive Deformation of Metal Micro-Textured Thermal Interface Materials using SEM Geometry Reconstruction” Computers and Structures, 92-93, pp. 216-228. https://doi.org/10.1016/j.compstruc.2011.11.001

  57. B.P. Whelan, R. Kempers, A.J. Robinson, (2012) “A Liquid-Based System for CPU Cooling Implementing a Jet Array Impingement Waterblock and a Tube Array Remote Heat Exchanger” Applied Thermal Engineering, 39, pp. 86-94. https://doi.org/10.1016/j.applthermaleng.2012.01.013

  58. R. Kempers, A.J. Robinson, A. Lyons, (2010) “Characterization of Thermal Contact Resistance in Metal Micro-Textured Thermal Interface Materials using Electrical Contact Resistance Measurements” Defect and Diffusion Forum Vols. 297-301 pp. 1190-1198. https://doi.org/10.4028/www.scientific.net/DDF.297-301.1190

  59. D. Hernon, T. Salamon, R. Kempers, S. Krishnan, A. Lyons, M. Hodes, P. Kolodner, J. Mullins, L. McGarry, (2009) “Thermal Management: Enabling Enhanced Functionality and Reduced Carbon Footprint” Bell Labs Technical Journal 14(3), pp. 7–20. https://doi.org/10.1002/bltj.20385

  60. R. Kempers, P. Kolodner, A. Lyons, A.J. Robinson, (2009) “A High-Precision Apparatus for the Characterization of Thermal Interface Materials” Review of Scientific Instruments, 80, 095111. https://doi.org/10.1063/1.3193715

  61. R. Kempers, A.J. Robinson, D. Ewing, C.Y. Ching, (2008) “Characterization of Evaporator and Condenser Thermal Resistances in a Screen Mesh Wicked Heat Pipe”, International Journal of Heat and Mass Transfer, 51, pp. 6039-6046. https://doi.org/10.1016/j.ijheatmasstransfer.2008.04.001

  62. R. Kempers, D. Ewing, C.Y. Ching, (2006) “Effect of Number of Mesh Layers and Fluid Loading on the Performance of Screen Mesh Wicked Heat Pipes”, Applied Thermal Engineering, 26, pp. 589-595. https://doi.org/10.1016/j.applthermaleng.2005.07.004