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Faculty

Faculty

Full-time Faculty

DENG Weiwei

Professor

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Careers

2008.6 - 2010.6  Yale University  Post Doc.

2010.6 - 2015.8 University of Central Florida  Assistant Professor

2015.8 - 2017.5 Virginia Tech  Associate Professor(with Tenure)

2017.5 - now  Southern University of Science and Technology  Professor

Education

1995 - 1999  Tsinghua University  B.S.

1999 - 2001  Tsinghua University  M.S.

2003 - 2008  Yale University Ph.D.

Research Areas

Experimental fluid dynamics of liquid droplets, jets, and films;

Printing of perovskite and polymer solar cells via electrospray deposition;

Printing of flexible electronics;

Spray drying route of nanoparticles for cancer therapy.

Teaching

Autumn of 2021: MAE207 Engineering Fluid Mechanics

This course is designed for undergraduates majoring in engineering and introduces the basic concepts and methods of fluid mechanics. Knowledge points include: pressure, stress, statics, buoyancy; open system and controlled volume analysis; conservation of mass and momentum of flowing liquid; viscous fluid, tube flow; dimensional analysis; boundary layer; lift and resistance. Students apply the learned concepts to model different problems to study, analyze, and design fluid systems. This course will train the ability to simplify and solve problems in the context of practical engineering applications.

Spring of 2021: MAE5027 Interface Phenomenon

This course introduces the forces and unique phenomena at the material interface, as well as the theoretical analysis and experimental methods of interface phenomena. Knowledge points include: surface tension, wetting, dewetting, water repellent, capillary origami, contact line dynamics, long-range force, fluid mechanics of thin liquid membranes, surfactants, Janus particles, wetting with textured or soft surfaces And the flow caused by the surface tension gradient. Students will apply the learned concepts to model or construct experiments to analyze different problems. This course will train the ability to analyze and solve interfacial phenomena in the context of interdisciplinary research and practical engineering applications.

Academic Achievements

  1. Fan Gao, Hao Yi, Lehua Qi, Rui Qiao, W Deng*, Weakly charged droplets fundamentally change impact dynamics on flat surfaces, Soft Matter 15 (28), 5548-5553, 2019 (封面文章, IF=3.89)

  2. Lei Guo, Yongqing Duan, Weiwei Deng, Yin Guan, YongAn Huang, and Zhouping Yin, Charged Satellite Drop Avoidance in Electrohydrodynamic Dripping, Micromachines (Basel). 10(3): 172, 2019 (IF=2.2)

  3. Yuanyuan Jiang, Congcong Wu, Liurui Li, Kai Wang, Zui Tao, Fan Gao, Weifeng Cheng, Jiangtao Cheng, Xin-Yan Zhao, Shashank Priya, Weiwei Deng*, All electrospray printed perovskite solar cells, Nano Energy, 53:440-448, 2018 (IF=15)

  4. X. Zhao, Z. Tao, W. Yang, L. Wang, Y. Jiang, Q. Zhang, B. Mi, M. Hong, and W. Deng*, Morphology and Electrical Characteristics of Polymer: Fullerene Films Deposited by Electrospray, Solar Energy Materials and Solar Cells, 183:137–145, 2018 (IF=6.0)

  5. Y. Wei, F.S. Segura, W. Deng, and R-H Chen, Effect of transport processes on ignition of stretched diffusion flames using laser spark, International Journal of Heat and Mass Transfer, 123: 988–993, 2018. (IF=3.89)

  6. S. Novak, P.T. Lin, C. Li, C. Lumdee, J. Hu, A. Agarwal, P. Kik, W. Deng, K. Richardson, Direct electrospray printing of gradient refractive index chalcogenide glass films, ACS Applied Materials & Interfaces, 9, 26990−26995, 2017. (IF=7.5)

  7. C Wang, X Zhang, D Cao, H Yin, X Li, P Cheng, B Mi, Z Gao, W Deng, In situ preparation of hierarchically structured dual-layer TiO2 films by E-spray method for efficient dye-sensitized solar cells, Organic Electronics 49, 135-141, 2017 (IF=3.68)

  8. X.Y. Zhao, C. Li, W. Yang, W. Deng*, Paper-based Electrospray Emitters, Journal of Aerosol Science, 113, 108–113, 2017. (IF=2.0)

  9. X.Y. Zhao, D.E. Johnston, J.C. Rodriguez, Z. Tao, B.X. Mi, W. Deng*, Enhancement and Reorientation of Crystalline Domains in Nanostructured Polymer Semiconductor Films by Electrospray Deposition, Macromolecular Materials and Engineering, 2017, 1700090. (IF=2.3)

  10. C. Li, S. Novak, S. Denisov, N. McClenaghan, N. Patel, A. Agarwal, K. Richardson, W. Deng*, Electrospray deposition of quantum dot-doped Ge23Sb7S70 chalcogenide glass films, Thin Solid Films, 626, 194–199, 2017. (IF=2.0)

  11. Y. Wei, W. Deng, R-H Chen, Effects of internal circulation and nanoparticle mobility during nanofluid droplet evaporation, International Journal of Heat and Mass Transfer, 103, 1335-1347, 2016. (IF=3.89)

  12. Y. Wei, W. Deng, R-H Chen, Effects of insoluble nanoparticles on nanofluid droplet evaporation, International Journal of Heat and Mass Transfer, 97, 725-734, 2016. (IF=3.89)

  13. H. Yi, L. H. Qi, J. Luo, W. Deng*, Pinhole Formation from Liquid Metal Microdroplets Impact on Solid Surfaces, Applied Physics Letters, 108, 041601, 2016. (IF=3.3)

  14. H. Duan, F. J. Romay, C. Li, A. Naqwi, W. Deng* and B. Y. H. Liu, Generation of Monodisperse Aerosols by Combining Aerodynamic Flow‐Focusing and Mechanical Perturbation, Aerosol Science and Technology, 50, 1, 17-25, 2016. (IF=2.8)

  15. S. Novak, D. E. Johnston, C. Li, W. Deng*, K. Richardson, Deposition of Ge23Sb7S70 chalcogenide glass films by electrospray, Thin Solid Films, 588, 56-60, 2015. (IF=2.0)

  16. C. Li, K. Krueger, W. Yang, H. Duan, and W. Deng*, Gas-focused Liquid Microjets from a Slit, Physics of Fluids, 27, 032101 (10 pages) 2015. (IF=2.2)

  17. X. Zhao, W. Yang, C. Li, Z. Gao, B. Mi, Z. Chen, W. Huang, and W. Deng*, Effects of Damkhöler number of evaporation on the morphology of active layer and the performance of organic heterojunction solar cells fabricated by electrospray method, Solar Energy Materials and Solar Cells, 134: 140-147, 2015. (IF=6.0)

  18. W. Yang, H. Duan, C. Li, and W. Deng*, Crossover of varicose and whipping instabilities in electrified micro jets, Physical Review Letters, 112, 054501, 2014. (封面文章. IF=8.46)

  19. X. Zhao, X. Wang, S. Lim, D. Qi, R. Wang, Z. Gao, B. Mi, Z. Chen, W. Huang, and W. Deng*, Enhancement of the performance of organic solar cells by electrospray deposition with optimal solvent system, Solar Energy Materials and Solar Cells, 121: 119-125, 2014. (IF=6.0)

  20. B. Duong, H. Liu, C. Li, W Deng, L Ma, M Su, Printed multilayer microtaggants with phase change nanoparticles for enhanced labeling security, ACS Appl. Mater. Interfaces, 6: 8909–8912, 2014. (IF=7.5)

  21. X. Wang, H. Yu, D. Lu, J. Zhang, and W. Deng, Label free detection of the breast cancer biomarker CA15.3 using ZnO nanorods coated quartz crystal microbalance, Sensors and Actuators B: Chemical, 195: 630–634, 2014. (IF=3.7)

  22. C. Li, M. Chang, W. Yang, A. Madden, and W. Deng*, Ballpoint pen tips as robust cone-jet electrospray emitters, J. Aerosol Science, 77, 10-15, 2014. (IF=2.8)

  23. T. Zhu, C. Li, W. Yang, X. Zhao, X. Wang, C. Tang, B. Mi, W. Huang, and W. Deng*, Electrospray dense suspensions of TiO2 nanoparticles for dye sensitized solar cells, Aerosol Science and Technology, 47: 1302-1309, 2013. (IF=2.8)

  24. H. Duan, W. Yang, C. Li, B. Lojewski, and W. Deng*, Scalable generation of strictly monodisperse droplets by transverse electro-hydrodynamic excitations, Aerosol Science and Technology, 47:1174-1179, 2013. (IF=2.8)

  25. H. Duan, C. Li, W. Yang, L. An, and W. Deng*, Near-field electrospray micro printing of polymer derived ceramics, Journal of Microelectromechanical Systems, 22:1, 1-3, 2013. (IF=2.1)

  26. B. Lojewski, W. Yang, H. Duan, C. Xu, and W. Deng*, Design, Fabrication and characterization of linear multiplexed electrospray atomizers micro-machined from metal and polymers, Aerosol Science and Technology, 47:146-152, 2013. (IF=2.8)

  27. W. Yang, B. Lojewski, Y. Wei, and W. Deng*, Interactions and deposition patterns of multiplexed electrosprays, Journal of Aerosol Science, 46, 20-33, 2012. (IF=2.8)

  28. W. Deng* and A. Gomez, Full transient response of Taylor cones to a step change in the electric field, Microfluidics and Nanofluidics, 12:1, 383-393, 2012. (IF=3.4)

  29. X. Zhao, B. Lojewski, W. Yang, T. Zhu, B. Mi, Z. Gao, W. Huang, and W. Deng*, Electrospray as a fabrication tool in organic photovoltaics, Reviews in Nanoscience and Nanotechnology, 1:3, 172-186, 2012. (特邀综述.)

  30. W. Deng and A. Gomez, Electrospray cooling for microelectronics, International Journal of Heat and Mass Transfer, 54, 2270-2275, 2011. (IF=2.6)

  31. W. Deng, and A. Gomez, The role of electric charge in microdroplets impacting on conducting surfaces, Physics of Fluids, 22:51703, 2010. (IF=1.9)

  32. W. Deng, C.M. Waits, and A. Gomez, Digital electrospray for controlled deposition, Review of Scientific Instruments, 81:35114, 2010. (IF=1.6)

  33. B. Almeria, W. Deng, T. Fahmy, and A. Gomez, Controlling the Morphology of electrospray-generated PLGA microparticle for drug delivery, Journal of Colloid and Interface Science, 343, 125-133, 2010. (IF=3.4)

  34. W. Deng, C.M. Waits, B. Morgan, and A. Gomez, Compact multiplexing of monodisperse electrosprays, Journal of Aerosol Science, 40, 907-918, 2009. (IF=2.8)

  35. W. Deng and A. Gomez, Influence of Space charge on the scale-up of multiplexed electrosprays, Journal of Aerosol Science, 38, 1062-1078, 2007. (IF=2.8)

  36. W. Deng, J. Klemic, X. Li, M. Reed and A. Gomez, Liquid fuel combustor miniaturization via microfabrication, Proceedings of the Combustion Institute, 31, 2239-2246, 2007. (IF=2.6)

  37. W. Deng, J. Klemic, X. Li, M. Reed and A. Gomez, Increase of electrospray throughput using multiplexed microfabricated sources for the generation of monodisperse Droplets, Journal of Aerosol Science, 37, 696-714, 2006. (IF=2.8)

  38. M. Duby, W. Deng, K. Kim, T. Gomez and A. Gomez, Monodisperse electrospray multiplexing in the multi-Jet mode, Journal of Aerosol Science, 37, 306-322, 2006. (IF=2.8)

  39. M. Li, W. Deng, Y. Fan, Study on arc movement in hollow electrode plasma generators with external double magnetic fields, Plasma Chemistry and Plasma Processing, 24, 73-84, 2004. (IF=1.7)

  40. M. Li, Y. Fan, B. Dai, W. Deng, X. Liu, Study on mechanism of C-H radicals recombination into acetylene in the process of coal pyrolysis in hydrogen plasma, Thin Solid Films, 390, 170-174, 2001. (IF=2.0)