Recent Advances on Ultrasound-Modulated Two Fluid (Umtf) Atomization and its Applications

• Autorzy: Tsai S. , Tsai Ch.
• Języki publikacji: EN

Abstrakty

EN

This article presents the theoretical basis and unique capabilities of Ultrasound-Modulated Two-Fluid (UMTF) atomization that utilizes air to assist ultrasonic atomization. UMTF atomization of polymer solution s and micro-emulsion generates smaller and more uniform drops than conventional ultrasonic atomization. Its application to mass production of nanoparticles by spray pyrolysis relies on successful developement of silicon-based high frequency ultrasonic nozzles, a novel design of which is described.

Słowa kluczowe

EN

ultrasonic atomization; two-fluid atomization; spray pyrolysis; polymer solution; microemulsion

• Wydawca: Silesian Division of Polish Acoustical Society
• Czasopismo: Molecular and Quantum Acoustics
• Rocznik: 2002
• Tom: Vol. 23
• Strony: 419--431
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Tsai S.

• Dept. of Chemical Engineering, California State Univ., Long Beach, CA 90840
• Dept. of Electrical and Computer Engineering, Univ. of California, Irvine, CA 92697

autor

Tsai Ch.

• Dept. of Electrical and Computer Engineering, Univ. of California, Irvine, CA 92697
• Inst. of Applied Science and Engineering Research, Academia Sinica, Taipei 115, Taiwan

Bibliografia

• 1. S.C. Tsai, P.Childs, and P.Luu, “Ultrasound-Modulated Two-Fluid Atomization of a Water Jet, ” J. of Am. Inst, of Chem. Eng., (AIChE J.), 42, 3340-3350, (1996).
• 2. S.C.Tsai, “Ultrasound-Modulated Twin-Fluid Atomization,” U.S. Patent #5,687,905, (1997).
• 3. S.C.Tsai, P. Luu, P. Childs, A. Teshome, and C.S. Tsai, “Role of Capillary Waves in Two-Fluid Atomization," Physics of Fluids, 9, 2909-2918, (1997).
• 4. H.L.Berger, "Characterization of a Class of Widely Applicable Ultrasonic Nozzles," ILLASS, 1985; Sono-Tek brochure, "Ultrasonic Atomizing Nozzle Systems." (1991).
• 5. J. J. Hcble, “Combustion Aerosol Synthesis of Nanoscale Ceramic Powders,” J. of Aerosol Science, 29, 721-736, (1998).
• 6. T.T.Kodas and M.J. Hampden-Smith, Aerosol Processing of Materials, Chapters 4 8 and 11, Wiley-VCH, New York, 1999.
• 7. S.C.Tsai, P. Luu, P. Tam, Gerald Roski, and C.S. Tsai, “Flow Visualization of Taylor- Mode Breakup of a Viscous Liquid Jet,” AIP Physics of Fluids, 11, 1331-1341, (1999).
• 8. G.I.Taylor, “Generation of Ripples By Wind Blowing Over A Viscous Fluid,” The Scientific Papers of G.I. Taylor, Vol. ¡11, 244-254, (1940).
• 9. S.C.Tsai and P. Luu, “Ultrasound-Modulated Two-Fluid Atomization of Dilute Polymer Solutions,” J. ofAmer. Inst, of Chemical Engineers (AlChEJ.), 46, 1650-1661, (2000).
• 10. S.C.Tsai, C.Y. Chen, Y.L. Song, C.S. Tsai, H.S. Tsai, and W.Y. Chiu, “Ultrasound- Enhanced Spray Drying of Polymer Micro-emulsions for Nanoparticles Synthesis,” Proc. of MRS (Materials Research Society) 2001 Spring Meeting, Vol. 676, Synthesis, Functional Properties and Applications of Nanostructures, Y3.28.1-Y3.25.5, (2001).
• 11. B. Bittner and T. Kissel, “Ultrasonic Atomization for Spray Drying: a Versatile Technique for the Preparation of Protein Loaded Biodegradable Microspheres," J. Microencapsulation, 16, 325-341, (1999).
• 12. S.C.Tsai, Y.L. Song, C.S. Tsai, C.C. Yang, and W.Y. Chiu, “Ultrasonic Spray Pyrolysis for Nanoparticles Synthesis,” Submitted for publication in AIChE J. (2002).
• 13. A. Lai and R.M. White, "Micromachined Silicon Ultrasonic Atomizer,” Proceedings of IEEE Ultrasonics Symposium, 1, 339-342, (1996).
• 14. R. Lang, "Ultrasonic Atomization of Liquids," J. Acous. Soc. of America, 34, 6-8, (1962).
• 15. E.Eisner, “Design of Sonic Amplitude Transformers for High Magnification,” J. of the Acoust. Society of America, 35, 1367-1377, (1963).
• 16. B.A.Auld, “Piezoelectricity." Chapter 8, Acoustic Fields and Waves in Solids, Vol. 1, Wiley-Interscience Publication. John Wiley and Sons, NY, 1973.
• 17. J.J. Wortman and R.A. Evans, “Young’s Modulus, Shear Modulus, and Poisson’s Ratio in Silicon and Germanium,” J. of Applied Physics, 36, 153-156, (1965).
• 18. S.C. Tsai, T.K. Tseng. YI_ Song, Y.F. Chou, and C. S. Tsai, “Modeling and Simulation of a High Frequency MEMS-Fabricated Ultrasonic Nozzle,” Proc. of 2002 MRS Spring Meeting, vol. 729. Symposium on MEMS and BioMEMS (in press).