WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1999039120) THERMAL EXPANSION-INDUCED FLUID CONTROL FOR MICROFLUIDIC DEVICES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1999/039120    International Application No.:    PCT/US1999/001831
Publication Date: 05.08.1999 International Filing Date: 28.01.1999
Chapter 2 Demand Filed:    27.08.1999    
IPC:
B01L 3/00 (2006.01), F16K 13/10 (2006.01)
Applicants: UNIVERSITY OF PITTSBURGH [US/US]; 5th Avenue and Bigelow Boulevard, Pittsburgh, PA 15260 (US)
Inventors: LANDERS, James, P.; (US).
HUHMER, Andreas; (US)
Agent: KLINE, Michael, J.; Thorp, Reed & Armstrong, LLP, One Riverfront Center, 5th floor, 20 Stanwix Street, Pittsburgh, PA 15222-4895 (US).
PENCOSKE, Edward, L.; Thorp, Reed & Armstrong, LLP, One Riverfront Center, 20 Stanwix Street, Pittsburgh, Pennsylvania 15222-4895 (US)
Priority Data:
09/015,278 29.01.1998 US
09/169,886 12.10.1998 US
Title (EN) THERMAL EXPANSION-INDUCED FLUID CONTROL FOR MICROFLUIDIC DEVICES
(FR) COMMANDE DE FLUIDE PAR EXPANSION THERMIQUE DE DISPOSITIFS MICROFLUIDIQUES
Abstract: front page image
(EN)A new method is proposed for the precise manipulation of picoliter-nanoliter volumes in microfluidic chips. The technique relies on the thermal expansion of fluids whereby fluid pressure and flow is easily manipulated through control of the fluid temperature. Heat can be efficiently applied in a sample manner using a light/infrared source (30) (e.g., a halogen lamp) which selectively heats the fluid (36) in the chip device through absorption of the optical energy in the visible-infrared (VIS/IR) portion of the electromagnetic spectrum. Several applications for fluid control and manipulation on microfluidic chips are proposed using the VIS/IR-induced fluid pumping mechanism, including valving.
(FR)L'invention concerne un nouveau procédé de manipulation précise de volumes en picolitre-nanolitre dans des puces microfluidiques. La technique concerne l'expansion thermique d'un fluide, la pression et l'écoulement du fluide pouvant être facilement manipulées par régulation de la température du fluide. On peut appliquer efficacement de la chaleur de manière simple au moyen d'une source (30) lumineuse/infrarouge (par exemple une lampe halogène) qui chauffe sélectivement le fluide (36) dans la puce par absorption de l'énergie optique se trouvant dans la partie visible-infrarouge (VIS/IR) du spectre électromagnétique. On peut obtenir plusieurs applications de régulation et de manipulation de fluides sur des puces microfluidiques au moyen du mécanisme de pompe de fluide activé par VIS/IR, y compris une soupape.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, 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, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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)