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1. (WO2001021291) ACOUSTIC WAVE MICROMIXER USING FRESNEL ANNULAR SECTOR ACTUATORS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/021291 International Application No.: PCT/US2000/025961
Publication Date: 29.03.2001 International Filing Date: 21.09.2000
Chapter 2 Demand Filed: 19.04.2001
IPC:
B01F 13/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
F
MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
13
Other mixers; Mixing plant, including combinations of dissimilar mixers
Applicants:
VIVEK, Vibhu [IN/US]; US (UsOnly)
KIM, Eun, Sok [US/US]; US (UsOnly)
ZENG, Yi [CN/US]; US (UsOnly)
UNIVERSITY OF HAWAII [US/US]; 2800 Woodlawn Drive Suite 280 Honolulu, HI 96822, US (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CR, CU, CY, CZ, DE, DK, DM, DZ, EE, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MZ, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW)
Inventors:
VIVEK, Vibhu; US
KIM, Eun, Sok; US
ZENG, Yi; US
Agent:
SHERIDAN, James, A. ; Flehr, Hohbach, Test, Albritton & Herbert LLP Suite 3400 4 Embarcadero Center San Francisco, CA 94111-4187, US
Priority Data:
60/155,18021.09.1999US
Title (EN) ACOUSTIC WAVE MICROMIXER USING FRESNEL ANNULAR SECTOR ACTUATORS
(FR) MICROMALAXEUR A ONDES SONORES UTILISANT DES ACTIONNEURS A SECTEUR ANNULAIRE DE FRESNEL
Abstract:
(EN) A Fresnel Annular Sector Actuator (FASA) for micromixing of fluids, utilizes a self-focusing acoustic wave transducer (102, 104, 106, 108, or 802, 804, 806, 808) which focuses acoustic waves through constructive wave interference. In the transducer (810), RF power is applied between the electrodes (820A, 820B, 820C, 820D) (sandwiching a piezoelectric film) with its frequency preferably corresponding to the thickness mode resonance of the piezoelectric film. Strong acoustic waves are generated over the electrode area, and interfere with each other as they propagate in the fluid. By proper design of the electrodes, and forming various combinations of the electrodes, wave focusing can be achieved. The mixing can be further enhanced by providing selective actuation and sequencing of the different segments by an RF signal source (810).
(FR) L'invention porte sur un actionneur à secteur annulaire de Fresnel (FASA) pour le micromalaxage de fluides comportant un transducteur d'ondes sonores focalisant ses ondes au moyen d'une structure interférentielle. Dans le transducteur la puissance RF est appliquée entre des électrodes qui enserrent un film piézo-électrique dont la fréquence correspond de préférence au mode de résonance de l'épaisseur du film. Les puissantes ondes sonores produites à la surface des électrodes interférent entre elles en se propageant dans le fluide. La conception judicieuse des électrodes et leurs diverses combinaisons permettent d'assurer la focalisation des ondes. On peut encore améliorer le malaxage par une activation et un séquençage sélectifs des différents segments par une source de signaux RF.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)