Distinguished R&D Staff Scientist
Dr. Jun Qu currently is a Distinguished R&D Staff Scientist in the Materials Science and Technology Division at Oak Ridge National Laboratory. He earned his Ph.D. in Mechanical Engineering from North Carolina State University in 2002. Dr. Qu’s research interests include: advanced lubrication for energy efficiency, surface engineering for wear and corrosion protection, nanostructured energy materials, nuclear tribology, and advanced manufacturing. He has published 3 book chapters and 70+ peer-reviewed journal papers, and owns 5 U.S. patents. Dr. Qu received a R&D 100 Award (team lead) in 2014, DOE Vehicle Technologies Office R&D Award in 2014, and SME Outstanding Young Manufacturing Engineer Award in 2009. He currently serves as a committee member for the U.S. DOE Lubricant Working Group, steering committee member for Wear of Materials, an Associate editor for Frontiers in Mechanical Engineering.
• R&D 100 Award (Team lead), jointly among ORNL, GM, Shell, and Lubrizol, Ionic liquid anti-wear additives for fuel-efficient engine lubricants, R&D Magazine, 2014.
• U.S. DOE Vehicle Technologies Office R&D Award, for research achievements in ionic liquid lubricants and additives, 2014.
• John Bollinger Outstanding Young Manufacturing Engineer Award, Conferred in recognition of significant achievement and leadership in manufacturing engineering, Society of Manufacturing Engineers (SME), 2009.
• Invited attendee to U.S. Frontiers of Engineering Symposium, National Academy of Engineering (NAE), 2015.
• ORNL Significant Event Award, Discovery and fundamental understanding of incompatibility between diamond-like-carbon coatings and lubricant additives provide new insights for future materials development, 2015.
• ORNL Significant Event Award, Development of lubricant that meets DOE goal of 2 percent vehicle fuel economy improvement, 2014.
• ORNL Significant Event Award, Breakthrough in ionic liquid lubricants recognized by a major DOE program award, 2011.
o Advanced lubrication for energy efficiency
1. Ionic liquids as novel lubricants and lubricant additives for automotive applications (PI, ORNL Seed 2005-06; DOE CRADA w/ GM 2009-13; DOE FOA award CRADA w/ Shell 2012-16; DOE FOA award w/ GM 2015-18)
2. Compatibility of lubricant anti-wear additives on non-metallic hard coatings and non-ferrous bearing alloys (PI, DOE 2013-16)
3. Hybrid ionic-nano-additives for engine lubrication to improve fuel efficiency (co-PI, DOE FOA award w/ UTK and UCM 2015-17)
4. Modified temperature-responsive hyperbranched polymers for improved viscosity and enhanced lubricity (co-PI, DOE FOA award w/ PNNL, 2014-16)
5. Nanodiamond lubricant additives (co-PI, DOE Voucher award w/ Cool-X, 2016)
6. Effects of engine oil aging on friction and wear behavior (co-PI, DOE 2002-05)
7. Diesel fuel injector lubrication and scuffing in ultra low sulfur fuels (co-PI, DOE 2002-05)
o Surface engineering for wear and corrosion protection
1. Advanced heavy-duty diesel engine piston materials and coatings (PI, DOE CRADA w/ Cummins 2015-16)
2. Ionic liquids-induced anti-corrosion conversion coatings for Mg alloys (PI, ORNL Seed 2012-14)
3. Surface texturing for friction and wear reduction (PI, DOE 2014)
4. Nanostructured superhydrophobic coatings for drag reduction and anti-corrosion (PI, DOE FOA award w/ Ross Technology and Stevens Institute of Technology, 2009-12)
5. AlMgB14-based nanostructured superhard coatings for hydraulic and tooling systems (co-PI, DOE CRADA w/ Eaton, Ames Lab, and Greenleaf, 2007-10)
6. Surface nanocompositing of aluminum alloys via friction stir processing (PI, ORNL LDRD 2006-08)
7. Surface engineering of titanium alloys for diesel engine and brake applications (PI, DOE 2004-08)
8. Low-temperature colossal carbon supersaturation for austenitic stainless steels (co-PI, DOE FOA award collaborated w/ Swagelok and Case Western Reserve U, 2005-08)
o Nuclear tribology
1. Grid-to-rod fretting modeling and experimental verification (GTRF), Consortium for Advanced Simulation of Light Water Reactors (CASL) (PI, DOE 2014-17)
2. Lubricant evaluation for nuclear bearing components (co-PI, WFO 2013-15)
o Nanostructured energy materials
1. Self-aligned Cu-Si core-shell nanowire array as a novel anode for Li-ion batteries (PI, ORNL Seed 2010-13)
2. Ionic liquids-produced high-quality, low-defect TiO2 nanotube array for Li-ion batteries & photoelectrochemical water splitting (PI, DOE FOA award, 2009-11)
1. Thermal drilling of Al, Mg, and Ti alloys (co-PI, DOE w/ U Michigan 2005-07)
2. High-speed titanium machining (co-PI, DOE w/ TWS and U Michigan 2004-06)
3. Grindability of ceramics and TiC-Ni3Al composites (co-PI, DOE w/ Louisiana State U, 2005)
4. Cylindrical wire electrical discharge machining of metals and MMCs followed by micro-blasting to improve surface integrity (Ph.D. dissertation, 1999-2002)
5. Free-form surface and curve matching for shape conformance checking (M.S. thesis, 1998-1999)
Google Scholar citations: >1700, h-index: 24, i10: 42
1. J. Qu, Chapter 23 “Diesel Fuel Lubrication and Testing,” in: S.C. Tung and G.E. Totten, eds. Automotive Lubricants and Testing, Eagan, MN, ASTM International, SAE International, 2012.
2. J. Qu, H.M. Meyer, “X-Ray Photoelectron Spectroscopy,” in: Encyclopedia of Tribology, Springer, 2013.
3. A.H. Heuer, J. Qu, L. O’Donnell, “Low Temperature Carburization,” in: Encyclopedia of Tribology, Springer, 2013.
ASTM International Standards
1. ASTM G181, “Standard Test Method for Conducting Friction Tests of Piston Ring and Cylinder Liner Materials Under Lubricated Conditions,” ASTM International, 03.02 (2004).
2. ASTM G206, “Guide for Measuring the Wear Volumes of Piston Ring Segments Run Against Flat Coupons in Reciprocating Wear Tests,” ASTM International, 03.02 (2011).
Refereed Journal Papers (total 73, first or corresponding author* on 47)
1. J. Qu*, W.C. Barnhill, H. Luo, H.M. Meyer, D.N. Leonard, A.K. Landauer, B. Kheireddin, H. Gao, B.L. Papke, S. Dai, “Synergistic effects between phosphonium-alkylphosphate ionic liquids and ZDDP as lubricant additives,” Advanced Materials 27 (2015) 4767-4774.
2. J. Robinson, Y. Zhou, P. Bhattacharya, R. Erck, J. Qu, J. Bays, L. Cosimbescu, “Probing the molecular design of hyper-branched aryl polyesters towards lubricant applications,” Scientific Reports 6 (2016) DOI:10.1038/srep18624.
3. Y. Zhou, D.N. Leonard, H.M. Meyer, H. Luo, J. Qu*, “Does the use of diamond-like carbon coating and organophosphate lubricant additive together causes excessive tribochemical material removal?” Advanced Materials Interfaces 2 (2015) DOI: 10.1002/admi.201500213.
4. W.C. Barnhill, H. Gao, B. Kheireddin, B.L. Papke, H. Luo, B.H. West, J. Qu*, “Tribological bench and engine dynamometer tests of a low viscosity SAE 0W-16 engine oil using a combination of ionic liquid and ZDDP as anti-wear additives,” Frontiers in Mechanical Engineering 1 (2015) 12, DOI: 10.3389/fmech.2015.00012.
5. W.F. Rohr, K. Nguyen, B.G. Bunting, J. Qu, “Feasibility of Observing Small Differences in Friction Mean Effective Pressure Between Different Lubricating Oil Formations using Small, Single-Cylinder Motored Engine Rig,” Tribology Transactions 58 (2015) 1067–1075.
6. J. Qu*, H.M. Meyer III, Z.-B. Cai, C. Ma, H. Luo, “Characterization of ZDDP and ionic liquid tribofilms on non-metallic coatings providing insights of tribofilm formation mechanisms,” Wear 332-333 (2015) 1273–1285.
7. Z.-B. Cai, Y. Zhou, J. Qu*, “Effect of oil temperature on tribological behavior of a lubricated steel−steel contact,” Wear 332-333 (2015) 1158–1163.
8. W.C. Barnhill, J. Qu*, H. Luo, H.M. Meyer III, C. Ma, M. Chi, B.L. Papke, “Phosphonium-organophosphate ionic liquids as lubricant additives: effects of cation structure on physicochemical and tribological characteristics,” ACS Applied Materials & Interfaces 6 (2014) 22585–22593.
9. Y. Zhou, J. Dyck, T. Graham, H. Luo, D.N. Leonard, J. Qu*, “Ionic liquids composed of phosphonium cations and organophosphate, carboxylate, and sulfonate as lubricant antiwear additives,” Langmuir 30 (2014) 13301–13311.
10. Z.-B. Cai, H.M. Meyer III, C. Ma, M. Chi, H. Luo, J. Qu*, “Comparison of the tribological behavior of steel-steel and Si3N4-steel contacts in lubricants with ZDDP or ionic liquid,” Wear 319 (2014) 172–183.
11. H.H. Elsentriecy, J. Qu*, H. Luo, H.M. Meyer III, C. Ma, M. Chi, “Improving corrosion resistance of AZ31B magnesium alloy via a conversion coating produced by a protic ammonium-phosphate ionic liquid,” Thin Solid Films 568 (2014) 44–51.
12. H.H. Elsentriecy, H. Luo, H.M. Meyer III, L.L. Grado, J. Qu*, “Effects of pretreatment and process temperature of a conversion coating produced by an aprotic ammonium-phosphate ionic liquid on magnesium corrosion protection,” Electrochimica Acta 123 (2014) 58–65.
13. J. Qu*, H. Luo, M. Chi, C. Ma, P.J. Blau, S. Dai, M.B. Viola, “Comparison of an oil-miscible ionic liquid and ZDDP as a lubricant anti-wear additive,” Tribology International 71 (2014) 88–97.
14. W.D. Li, H. Bei, J. Qu, Y.F. Gao, “Effects of machine stiffness on the loading-displacement curve during spherical nano-indentation,” Journal of Materials Research 28(14) (2013) 1903–1911.
15. G. Mordukhovich, J. Qu*, J.Y. Howe, S.S. Bair, B. Yu, H. Luo, D.J. Smolenski, P.J. Blau, B.G. Bunting, S. Dai, “A low-viscosity ionic liquid demonstrating superior lubricating performance from mixed to boundary lubrication,” Wear 301 (2013) 740–746.
16. H. Li, S.K. Martha, R.R. Unocic, H. Luo, S. Dai, J. Qu*, “High cyclability of ionic liquid–produced TiO2 nanotube arrays as an anode material for lithium-ion batteries,” Journal of Power Sources 218 (2012) 88–92.
17. J. Qu*, D.G. Bansal, B. Yu, J. Howe, H. Luo, S. Dai, H. Li, P.J. Blau, B.G. Bunting, G. Mordukhovich, D.J. Smolenski, “Anti-wear performance and mechanism of an oil-miscible ionic liquid as a lubricant additive,” ACS Applied Materials & Interfaces 4 (2012) 997–1002.
– Invited candidature by the Scientific Secretariat for the ENI Award 2013.
18. B. Yu, D.G. Bansal, J. Qu*, X. Sun, H. Luo, S. Dai, P.J. Blau, B.G. Bunting, G. Mordukhovich, D.J. Smolenski, “Oil-miscible and non-corrosive phosphonium-based ionic liquids as candidate lubricant additives,” Wear 289 (2012) 58–64.
19. J. Qu*, H. Li, J.J. Henry Jr., S.K. Martha, N.J. Dudney, H. Xu, M. Chi, M.J. Lance, S.M. Mahurin, T.M. Besmann, S. Dai, “Self-aligned Cu-Si core-shell nanowire array as a high-performance anode for Li-ion batteries,” Journal of Power Sources 198 (2012) 312–317.
20. L. An, J. Qu, J. Luo, Y. Fan, L. Zhang, J. Liu, C. Xu, P.J. Blau, “Aluminum nanocomposites having wear resistance better than stainless steel,” Journal of Materials Research, 26 (2011) 2479–2483.
21. C. Higdon, B. Cook, J. Harringa, A. Russell, J. Goldsmith, J. Qu, and P.J. Blau, “Friction and wear mechanisms in AlMgB14-TiB2 nanocoatings,” Wear 271 (2011) 2111–2115.
22. J. Qu*, H. Xu, Z. Feng, D.A. Frederick, L. An, H. Heinrich, “Improving the tribological characteristics of aluminum alloys by forming a nanocomposite surface layer using friction stir processing,” Wear 271 (2011) 1940–1945.
23. J. Qu*, H.M. Meyer III, P.J. Blau, B.G. Bunting, “Low-temperature colossal carbon supersaturation enables anti-wear boundary film formation for austenitic stainless steels in oil-lubricated environment,” Wear 271 (2011) 1733–1738.
24. H. Li, J. Qu*, Q. Cui, H. Xu, H. Luo, M. Chi, R.A. Meisner, W. Wang, S. Dai, “TiO2 nanotube arrays grown in ionic liquids: high-efficiencies in photocatalysis and pore-widening,” Journal of Materials Chemistry 21(26) (2011) 9487–9490.
25. J. Qu*, M. Chi, H.M. Meyer III, P.J. Blau, S. Dai, H. Luo, “Nanostructure and composition of tribo-boundary films formed in ionic liquid lubrication,” Tribology Letters 43(2) (2011) 205-211.
26. A.M. Kovalchenko, P.J. Blau, J. Qu, and S. Danyluk, “Scuffing initiation in metals sliding against copper under non-lubricated conditions,” Wear, 271 (2011) 2998–3006.
27. B.A. Cook, J.L. Harringa, J. Anderegg, A.M. Russell, J. Qu, P. J. Blau, C. Higdon, A.A. Elmoursi, “Analysis of wear mechanisms in low friction, nanocomposite AlMgB14-TiB2 coatings,” Surface and Coatings Technology 205(7) (2010) 2296-2301.
28. W. Li, P.J. Blau, J. Qu, S.J. Park, R.M. German, “Tribological behavior of die tool materials used for die compaction in powder metallurgy,” Powder Metallurgy 53(3) (2010) 251-259.
29. F. Jiang, J. Qu, G. Fan, W. Jiang, D. Qiao, M.W. Freels, P.K. Liaw, H. Choo “Tribological studies of a Zr-based glass-forming alloy with different states,” Advanced Engineering Materials 11(11) (2009) 925-931.
30. J. Qu*, P.J. Blau, S. Dai, H. Luo, H.M. Meyer III, “Ionic liquids as novel lubricants and additives for diesel engine applications,” Tribology Letters 35(3) (2009) 181-189.
31. M. Beltowksi. P.J. Blau, J. Qu, “Wear of spheroidal graphite cast irons for tractor drive train components,” Wear 267(9-10) (2009) 1752-1756.
32. H. Xu, C.R. Hubbard, K. An, Z. Feng, X.-L. Wang, J. Qu*, “Neutron diffraction measurement of residual stresses in friction stir processed nanocomposite surface layer,” Advanced Engineering Materials 11(8) (2009) 650-653.
33. J. Qu*, P.J. Blau, S. Dai, H. Luo, H.M. Meyer III, J.J. Truhan, “Tribological characteristics of aluminum alloys against steel lubricated by imidazolium and ammonium ionic liquids,” Wear 267(5-8) (2009) 1226-1231.
34. J. Qu*, P.J. Blau, B.C. Jolly, “Oxygen-diffused titanium as a candidate brake rotor material,” Wear 267(5-8) (2009) 818-822.
35. P.J. Blau, M. Yao, J. Qu, J. Wu, “Use of multiple criteria to map the high-temperature scuffing behavior of Co-based superalloys,” Wear 267(1-4) (2009) 374-379.
36. J. Qu*, H. Xu, Z. Feng, K. An, R. Battiste, L. An, H. Heinrich, “Forming Al-Al2O3 nanocomposite surfaces using friction stir processing,” Transactions of NAMRI/SME 37 (2009) 349-356.
37. J. Qu*, P.J. Blau, J.Y. Howe, H.M. Meyer III, “Oxygen diffusion enables anti-wear boundary film formation on titanium surfaces in zinc-dialkyl-dithiophosphate (ZDDP)-containing lubricants,” Scripta Materialia 60(10) (2009) 886-889.
38. J. Qu*, P.J. Blau, L. Zhang, H. Xu, “Effects of multiple treatments of low-temperature colossal supersaturation on tribological characteristics of austenitic stainless steels,” Wear 265(11-12) (2008) 1909-1913.
39. J. Qu*, P.J. Blau, “A New model to calculate friction coefficients and shear stresses in thermal drilling,” ASME Journal of Manufacturing Science and Engineering 130(1) (2008) 014502.
40. C.C. Klepper, J.M. Williams, J.J. Truhan, J. Qu, L. Riester, R.C. Hazelton, J.J. Moschella, P.J. Blau, J.P. Anderson, O.O. Popoola, M.D. Keitz, “Tribo-mechanical properties of thin boron coatings deposited on polished cobalt alloy surfaces for orthopedic applications,” Thin Solid Films 516 (2008) 3070-3080.
41. T.W. Liao, F.M. Tang, J. Qu, P.J. Blau, “Grinding wheel condition monitoring with boosted minimum distance classifiers,” Mechanical Systems and Signal Processing 22(1) (2008) 217-232.
42. J. Qu*, P.J. Blau, V.K. Sikka, “Measurement of the resistance of treated metal foils to scrubbing abrasion using a modified reciprocating wear test,” Journal of ASTM International 4(8) (2007) Paper ID JAI101294.
43. J. Qu*, P.J. Blau, B.C. Jolly, “Tribological properties of stainless steels treated by colossal carbon supersaturation,” Wear 263(1-6) (2007) 719-726.
44. P.J. Blau, B.C. Jolly, J. Qu, W.H. Peter, C.A. Blue, “Tribological investigation of titanium-based materials for brakes,” Wear 263(7-12) (2007) 1202-1211.
45. J.J. Truhan, R. Menon F. LeClaire, J. Wallin, J. Qu, P.J. Blau, “The friction and wear of various hard-face claddings for deep-hole drilling,” Wear 263(1-6) (2007) 234-239.
46. T.W. Liao, C.F. Ting, J. Qu, P.J. Blau, “A wavelet-based methodology for grinding wheel condition monitoring,” International Journal of Machine Tools & Manufacture 47(3-4) (2007) 580-592.
47. J. Qu*, J.J. Truhan, P.J. Blau, R. Ott, “The development of a pin-on-twin scuffing test to evaluate materials for heavy duty diesel fuel injectors,” Tribology Transactions 50(1) (2007) 50-57.
48. T.W. Liao, G. Hua, J. Qu, P.J. Blau, “Grinding wheel condition monitoring with hidden markov model-based clustering methods,” Machining Science and Technology 10(4) (2006) 511-538.
49. J. Qu*, J.J. Truhan, “An efficient method for accurately determining wear volumes of sliders with non-flat wear scars and compound curvatures,” Wear 261 (2006) 848-855.
50. J. Qu*, J.J. Truhan, S. Dai, H. Luo, P.J. Blau, “Ionic liquids with ammonium cations as lubricants or additives,” Tribology Letters 22(3) (2006) 207-214.
– Among all-time top ten highest-cited papers in Tribology Letters
51. S.F. Miller, C.C. Kao, A.J. Shih, J. Qu, “Investigation of wire electrical discharge machining of thin cross-sections and compliant mechanisms,” International Journal of Machine Tools & Manufacture 45(15) (2005) 1641-1740.
52. J. Qu*, A.J. Shih, R. Scattergood, J. Luo, “Abrasive micro-blasting to improve surface integrity of electrical discharge machined WC-Co composite,” Journal of Materials Processing Technology 166(3) (2005) 440-448.
53. J. Qu*, J.J. Truhan, P.J. Blau, H.M. Meyer III, “Scuffing transition diagrams for heavy duty diesel fuel injector materials in ultra low-sulfur fuel-lubricated environment,” Wear 259(7-12) (2005) 1031-1040.
54. J.J. Truhan, J. Qu, P.J. Blau, “The effect of lubricating oil condition on the friction and wear of piston ring and cylinder liner materials in a reciprocating bench test,” Wear 259(7-12) (2005) 1048-1055.
55. J. Qu*, P.J. Blau, T.R. Watkins, O.B. Cavin, N.S. Kulkarni, “Friction and wear of titanium alloys sliding against metal, polymer, and ceramic counterfaces,” Wear 258(9) (2005) 1348-1356.
56. J. Qu*, J.J. Truhan, P.J. Blau, “Evaluating candidate materials for heavy duty diesel fuel injectors using a ‘pin-on-twin’ scuffing test,” Tribology International 38(4) (2005) 381-390.
57. J. Qu*, J.J. Truhan, P.J. Blau, “Detecting the onset of localized scuffing with the pin-on-twin fuel-lubricated test for heavy duty diesel fuel injectors,” International Journal of Engine Research 6(1) (2005) 1-9.
58. J.J. Truhan, J. Qu, P.J. Blau, “A rig test to measure friction and wear of heavy duty diesel engine piston rings and cylinder liners using realistic lubricants,” Tribology International 38(3) (2005) 211-218.
59. J. Qu*, J.J. Truhan, P.J. Blau, “Application of the ASTM loop abrasion test to cylindrical specimens,” Journal of Testing and Evaluation, JTE12508 33(1) (2005) 527-531.
60. J. Qu*, P.J. Blau, J. Klett, B. Jolly, “Sliding friction and wear characteristics of novel graphitic foam materials,” Tribology Letters 17(4) (2004) 879-886.
61. C.W. Hardin, J. Qu, A.J. Shih, “Fixed abrasive diamond wire saw slicing of single crystal silicon carbide wafers,” Materials and Manufacturing Processes 19(2) (2004) 355–367.
62. J. Qu*, R. Sarma, “The continuous non-linear approximation of procedurally defined curves using integral B-splines,” Engineering with Computers 20(1) (2004) 22-30.
63. S.F. Miller, A.J. Shih, J. Qu, “Investigation of the spark cycle on material removal rate in wire electrical discharge machining of advanced materials,” International Journal of Machine Tools & Manufacture 44 (2004) 391-400.
64. J. Patten, R. Fesperman, S. Kumar, S. McSpadden, J. Qu, M. Lance, R. Nemanich, J. Huening, “High-pressure phase transformation of silicon nitride,” Applied Physics Letters 83(23) (2003) 4740-4742.
65. J. Qu*, A.J. Shih, “Analytical surface roughness parameters of a theoretical profile consisting of elliptical arcs,” Machining Science and Technology 7(2) (2003) 281-294.
66. J. Qu, L. Riester, A.J. Shih, R. Scattergood, E. Lara-Curzio, T. Watkins, “Nanoindentation characterization of surface layers of electrical discharge machined WC-Co,” Materials Science and Engineering-A 334 (2003) 125-131.
67. J. Qu, A.J. Shih, R. Scattergood, “Development of the cylindrical wire electrical discharge machining process, part II: surface integrity and roundness,” ASME Journal of Manufacturing Science and Engineering 124(3) (2002) 708-714.
68. J. Qu, A.J. Shih, R. Scattergood, “Development of the cylindrical wire electrical discharge machining process, part I: concept, design, and material removal rate,” ASME Journal of Manufacturing Science and Engineering 124(3) (2002) 702-707.
69. J. Qu*, G.X. Zhang, “Environmental error compensation of displacement interferometry system,” Chinese Aviation Engine 104(3) (2001) 43-44, 3.
70. J. Qu, R. Sarma, “Least square curve and surface localization for shape conformance checking,” SME Journal of Manufacturing Systems 19(5) (2000) 297-304.
– Reprinted from Transactions of NAMRI/SME 27 (1999) 275-280 as an Outstanding Paper Award Finalist
71. D.G. Li, G.X. Zhang, J. Qu, “Comprehensive compensation for the environmental error factor in high-accuracy laser interferometry,” Chinese Opto-Electronic Engineering 26(4) (1999) 28-33.
72. C.S. Dong, J. Qu, J.X. Wang, G.X. Zhang, Y.H. Mu, “Description of motion accuracy in coordinate measuring machines,” Chinese Aviation Precision Manufacturing Technology 34(1) (1998) 32-34.
73. B.H. Zhuang, W.W. Zhang, S.G. Feng, J. Qu, D. Cui, “Inner and exterior surface measurement using laser triangulation,” Chinese Measuring Techniques 8 (1995) 44-47.
1. C. Higdon, A.A. Elmoursi, J. Goldsmith, B. Cook, P.J. Blau, J. Qu, R. Milner, “Ion beam sputter target and method of manufacture,” U.S. Patent #8,821,701, August 13, 2014.
2. J. Qu, H.T. Lin, P.J. Blau, V.K. Sikka, “Titanium aluminide intermetallic alloys with improved wear resistance,” U.S. Patent #8,771,439 B2, July 8, 2014.
3. J.A. Ambrose, G. Mackiewicz-Ludtka, V.K. Sikka, J. Qu, “Oven rack having integral lubricious, dry porcelain surface,” US Patent #8,739,773 B2, June 3, 2014.
4. J. Qu, S. Dai, and H. Luo, "Method for synthesis of titanium dioxide nanotubes using ionic liquids," U.S. Patent #8,585,886, November 19, 2013.
5. J. Qu, J.J. Truhan, S. Dai, H. Luo, P.J. Blau, “Lubricants or lubricant additives composed of ionic liquids containing ammonium cations,” U.S. Patent #7,754,664, July 13, 2010.
− The first granted U.S. patent in the topic of ionic liquid lubrication.
6. J. Qu, H. Luo, Y. Zhou, J. Dyck, T. Graham, “Ionic liquids containing quaternary phosphonium cations and carboxylate anions, and their use as lubricant additives,” U.S. Patent Application 14/444,029, Jul. 28, 2014.
7. J. Qu, H. Luo, “Ionic liquids containing symmetric quaternary phosphonium cations and phosphorus-containing anions, and their use as lubricant additives,” U.S. Patent Application 14/184,754, Feb. 20, 2014.
8. J. Qu, H. Luo, “Corrosion prevention of magnesium surfaces via surface conversion treatments using ionic liquids,” U.S. Patent Application 14/044,248, Oct. 2, 2013.
9. J. Qu, S. Dai, “Composite nanowire compositions and methods of synthesis,” U.S. Patent Application 12/904,559, Oct. 14, 2010.
− Elected as one of the six top potential ORNL technologies for “Bridging the Gap 2011.”
10. J. Qu, T.M. Besmann, S. Dai, X. Zhang, “Multijunction hybrid solar cell incorporating vertically-aligned silicon nanowires with thin-films,” U.S. Patent Application 12/907,476, Oct. 19, 2010.