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1. (WO2010121176) MICROTENSIOMETER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2010/121176 International Application No.: PCT/US2010/031454
Publication Date: 21.10.2010 International Filing Date: 16.04.2010
IPC:
B81B 7/02 (2006.01) ,B81B 3/00 (2006.01) ,B82B 3/00 (2006.01) ,G01N 33/46 (2006.01) ,G01N 33/483 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
81
MICRO-STRUCTURAL TECHNOLOGY
B
MICRO-STRUCTURAL DEVICES OR SYSTEMS, e.g. MICRO-MECHANICAL DEVICES
7
Micro-structural systems
02
containing distinct electrical or optical devices of particular relevance for their function, e.g. micro-electro-mechanical systems (MEMS)
B PERFORMING OPERATIONS; TRANSPORTING
81
MICRO-STRUCTURAL TECHNOLOGY
B
MICRO-STRUCTURAL DEVICES OR SYSTEMS, e.g. MICRO-MECHANICAL DEVICES
3
Devices comprising flexible or deformable elements, e.g. comprising elastic tongues or membranes
B PERFORMING OPERATIONS; TRANSPORTING
82
NANO-TECHNOLOGY
B
NANO-STRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
3
Manufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33
Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
46
Wood
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33
Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
48
Biological material, e.g. blood, urine; Haemocytometers
483
Physical analysis of biological material
Applicants:
STROOCK, Abraham, D. [US/US]; US (UsOnly)
LAKSO, Alan, N. [US/US]; US (UsOnly)
PAGAY, Vinay [CA/US]; US (UsOnly)
ILIC, Bojan [US/US]; US (UsOnly)
METZLER, Meredith [US/US]; US (UsOnly)
6CORNELL UNIVERSITY [US/US]; 395 Pine Tree Road Suite 310 Ithaca, New York 14850, US (AllExceptUS)
Inventors:
STROOCK, Abraham, D.; US
LAKSO, Alan, N.; US
PAGAY, Vinay; US
ILIC, Bojan; US
METZLER, Meredith; US
Agent:
SCHNEIDERMAN, Anne, M.; Harris Beach PLLC One Park Place, 4th Floor 300 South State Street Syracuse, NY 13202, US
Priority Data:
61/170,22317.04.2009US
Title (EN) MICROTENSIOMETER
(FR) MICROTENSIOMÈTRE
Abstract:
(EN) A microtensiometer is provided that includes a substrate layer having an enclosed reservoir formed therein. A porous membrane is disposed on a surface of the substrate layer. The membrane includes a liquid side fluidly coupled to the reservoir and a vapor side fluidly coupled to a vapor interface. The porous membrane includes a plurality of through holes fluidly coupling the liquid reservoir to the vapor interface, and a nanoporous filler material disposed within the plurality of through holes. The filler material includes a plurality of open pores having a maximum diameter in the range of 0.2 to 200 nanometers. In one embodiment, the microtensiometer includes a molecular membrane disposed adjacent to the vapor side of the porous membrane. In one example, the molecular membrane is a highly crystalline polytetrafluoroethylene polymer having a microstructure characterized by nodes interconnected by fibrils. In one application, the microtensiometer may be used to measure the average water potential within a network of plant or tree xylem. In another application, the microtensiometer may be useful in real-time determination of the water potential in soil.
(FR) La présente invention concerne un microtensiomètre qui comprend une couche de substrat ayant un réservoir fermé formé dans celle-ci. Une membrane poreuse est disposée sur une surface de la couche de substrat. La membrane comprend un côté liquide en couplage fluidique avec le réservoir et un côté vapeur en couplage fluidique avec une interface de vapeur. La membrane poreuse comprend une pluralité de trous de passage reliant en couplage fluidique le réservoir liquide avec l'interface vapeur, et un matériau de remplissage nanoporeux disposé dans la pluralité de trous de passage. Le matériau de remplissage comprend une pluralité de pores ouverts ayant un diamètre maximal dans la plage de 0,2 à 200 nanomètres. Dans un mode de réalisation, le microtensiomètre comprend une membrane moléculaire disposée en position adjacente au côté vapeur de la membrane poreuse. Dans un exemple, la membrane moléculaire est un polymère de polytétrafluoroéthylène hautement cristallin ayant une microstructure caractérisée par des nœuds interconnectés par des fibrilles. Dans une application, le microtensiomètre peut être utilisé pour mesurer le potentiel hydrique moyen dans un réseau de xylème de plante ou d'arbre. Dans une autre application, le microtensiomètre peut être utile dans la détermination en temps réel du potentiel hydrique dans le sol.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)