Flow Affected By Fluid Contact, Energy Field Or Coanda Effect (e.g., Pure Fluid Device Or System) Patents (Class 137/803)
  • Patent number: 9782791
    Abstract: Systems, methods, and devices are disclosed for producing substantially uniform droplets. The system includes a fluid reservoir vessel defining a fluid reservoir, a separation membrane at one end of the fluid reservoir, at least one capillary channel at an opposite end of the fluid reservoir, a solution dispenser, and a piezo actuator in contact with a separation membrane. The separation membrane has a thickness greater than about 0.2 mm, and the solution dispenser maintains the fluid reservoir filled with fluid such that the fluid simultaneously contacts the separation membrane and the capillary channel. The solution dispenser maintains the fluid reservoir under pressure to create a fluid stream exiting the capillary. The piezo actuator is in contact with the separation membrane on a side opposite that in contact with the fluid, and the piezo actuator transfers a pressure wave through the fluid in the fluid reservoir to break up the fluid stream into uniform droplets.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: October 10, 2017
    Inventors: Makhlouf Redjdal, Kamal Hadidi, Gregory Wrobel, Eric Jordan
  • Patent number: 9739295
    Abstract: An apparatus for controlling flow of ER fluid. The apparatus has a first channel 10 for conveying carrier fluid 1 of a first dielectric constant and droplets 2 of a second dielectric constant in the carrier fluid. The apparatus further comprises a second channel 20 conveying the ER fluid and a first conductor 100 for conveying an electrical potential from the second channel to the first channel. A circuit 61 is provided for applying potential difference between the first and second channels. When a droplet is present in the first channel, the ER fluid is solidified in the second channel; when no droplet is present, the ER fluid flows as liquid in the second channel. Therefore the apparatus acts as an IF gate. Arrangements for other types of fluidic logic gate are also disclosed.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: August 22, 2017
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Weijia Wen, Limu Wang, Mengying Zhang
  • Patent number: 9388374
    Abstract: In one embodiment, a microfluidic structure comprises a culture chamber having an object flow inlet disposed between a pair of object flow outlets. A flow-around channel provides fluidic mass transport to the culture chamber through a perfusion barrier disposed opposite from the object flow inlet and object flow outlets. The perfusion barrier surrounds the culture chamber, defines an opposite wall of the culture chamber, and prevents cell passage into the flow around-channel. The perfusion barrier creates a low fluidic resistance path within the culture chamber, such that a flow of cells entering the culture chamber from the object flow inlet encounters a flow of media passing through the perfusion barrier. This causes the cells to take an approximately 180 degree turn and exit the culture chamber via the object flow outlets. The low fluidic resistance path allows the cells to settle onto the chamber floor without needing any physical barrier.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: July 12, 2016
    Assignee: EMD Millipore Corporation
    Inventors: Paul J. Hung, Philip J. Lee
  • Patent number: 9261119
    Abstract: For eliminating turbulence in a wall bounded flow a section of the flow-bounding wall is moved in the direction of the flow over the flow-bounding wall.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: February 16, 2016
    Inventor: Björn Hof
  • Patent number: 9242223
    Abstract: A fluid path structure in which the flow rate of fluid flowing in each flow path is equal to each other and in which each flow path has an increased flexibility in shape. The flow path structure has flow paths into which fluid is introduced. The flow paths include flow paths having different flow path lengths. The equivalent diameter of each part of each fluid path is set according to the flow path length of the fluid path so that the entire pressure loss of each flow path is equal to each other.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: January 26, 2016
    Assignee: Kobe Steel, Ltd.
    Inventors: Koji Noishiki, Tatsuo Yoshida, Seiichi Yamamoto, Kazuto Okada
  • Publication number: 20150083258
    Abstract: Systems and methods for secondary suctioning for an aerodynamic body are presented. A primary surface is configured along a leading edge of an aerodynamic body, and at least one secondary suction device comprising an elongated shape is configured at least a first distance from the primary surface. A non-suction surface is configured between the primary surface and the at least one secondary suction device.
    Type: Application
    Filed: June 4, 2013
    Publication date: March 26, 2015
    Inventors: Peter L. Rupp, Pradip G. Parikh, Lian L. Ng, Paul M. Vijgen
  • Patent number: 8951039
    Abstract: The object of the invention is to provide a lightweight mechanism that changes the distribution of a flow rate of air for combustion supplied into each burner, without providing a mechanical movable part in a passage for high-temperature and high-pressure air for combustion in a combustor having a plurality of burners such as a pilot burner and a main burner. The combustor equipped with an air flow rate distribution control mechanism based on a fluidic element in accordance with the present invention has a plurality of burners such as a main burner and a pilot burner, wherein with the fluidic element being disposed upstream of a passage of air for combustion that is supplied to each burner, and means for sucking out or blowing out air into a control air passage of the fluidic element being provided, the distribution of a flow rate of the air flowing into the burners is controlled by changing a flow direction of the air for combustion.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: February 10, 2015
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
  • Publication number: 20150027554
    Abstract: The disclosure relates to a droplet manipulating device and a method for manipulating a droplet. The droplets manipulating device includes a first magnetic field generator, a second magnetic field generator, and a flow channel. The first magnetic field generator produces a first magnetic field on the droplet, so that the droplet has the direction of magnetic field corresponding to the first magnetic field. Further, the second magnetic field generator produces a second magnetic field on the droplet so as to drive the droplet to be in motion in the flow channel.
    Type: Application
    Filed: June 2, 2014
    Publication date: January 29, 2015
    Inventors: Shao-Hsing YEH, Yu-Ying LIN, Chi-Han CHIOU, Liang-Ju CHIEN
  • Patent number: 8931518
    Abstract: Apparatus and methods provide for a flow control actuator having a fluid cavity that is shaped to create periodic waveforms within the resulting resonant actuating flow with predetermined characteristics for actuating a high-speed fluid flow. According to various embodiments, a flow control actuator includes a power source for exciting the actuator fluid at a resonant frequency and a cavity shaped according to resonant macrosonic synthesis principles to maximize the exit velocity of the actuating flow at an orifice of the actuator.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: January 13, 2015
    Assignee: The Boeing Company
    Inventor: Edward A. Whalen
  • Publication number: 20140374631
    Abstract: Apparatus, systems and methods for implementing flow cages and flow cage assemblies in association with high pressure fluid flows and fluid valves are provided. Flow cages and flow assemblies are provided to dissipate the energy of a fluid flow, such as by reducing fluid flow pressure and/or fluid flow velocity. In some embodiments the dissipation of the fluid flow energy is adapted to reduce erosion, such as from high-pressure jet flows, to reduce cavitation, such as by controllably increasing the flow area, and/or to reduce valve noise associated with pressure surge.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 25, 2014
    Inventors: Stewart Sherrit, Mircea Badescu, Xiaoqi Bao, Yoseph Bar-Cohen
  • Publication number: 20140345863
    Abstract: Electromagnetically active slurries comprising stabilized fluids and methods of using the stabilized, electromagnetically active slurries in fluid flow control and detection. Also, methods, fluids, equipment and/or systems for treating a subterranean formation penetrated by a wellbore, relating to treatment fluids based on the stabilized, electromagnetically active slurries.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 27, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Hemant K. J. Ladva, Yiyan Chen, Anthony Loiseau, Dmitriy Ivanovich Potapenko
  • Publication number: 20140261822
    Abstract: A fluid distribution door for use in a heating, ventilating, and air conditioning system includes a main body having a first surface and a second surface. The first surface and the second surface cooperate to form a first surface configuration which intersects with a second surface configuration. Each of the first surface configuration and the second surface configuration is formed by a three-dimensional feature.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Eric Keith Haupt, Jim Patrick Nolta, Jr., Shankar Patil
  • Publication number: 20140251381
    Abstract: A pulse jet liquid gas cleaning system has an ultrasonic transducer operable to transform a high-pressure stream of cryogenic fluid from a cryogenic fluid supply into pulsed jets of individual cryogenic fluid slugs.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Applicant: United Technologies Corporation
    Inventor: John E. Markowski, III
  • Publication number: 20140251898
    Abstract: A device for creating turbulent flow in a fluid including a tank having an inlet, an outlet, and an interior; at least one jet in an inflow assembly in the interior of the tank, the jet being in fluid communication with the inlet, the jet circulating fluid in the tank; a plurality of holes in an outflow assembly in the interior of the tank, the plurality of holes being in fluid communication with the outlet; and a deflector positioned to circulate the bulk of the fluid away from the plurality of holes. Methods of using the device are also provided.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Inventors: Benjamin Joseph Schaffer, Thomas Raymond Schaffer, Richard Thomas Schaffer, David R. Knighton, Vance D. Fiegel
  • Publication number: 20140246607
    Abstract: An apparatus for generating extreme ultra-violet (EUV) light for use in a lithography inspection tool, comprising a drive laser arranged to produce a laser pulse, a vacuum chamber, a set of focusing optics arranged to focus the laser pulse produced by the drive laser onto a target spot within the vacuum chamber with a beam target diameter of less than 100 ?m, a target material generator arranged to deliver an amount of a target material to the target spot within the vacuum chamber, and a set of collector optics arranged to focus a quantity of EUV light generated when the amount of the target material is exposed to the laser pulse at the target spot onto an intermediate focus spot.
    Type: Application
    Filed: February 13, 2014
    Publication date: September 4, 2014
    Applicant: KLA-Tencor Corporation
    Inventors: Alexander Bykanov, Oleg Khodykin, Daniel Christopher Wack
  • Publication number: 20140230912
    Abstract: The invention relates to a device (1) intended for handling objects (O) present in a channel (2) within a fluid (F), in particular a liquid. The device comprises: a channel (2) extending along a longitudinal axis (X), said channel (2) having a transverse section with a width (_) measured along a first transverse axis (Y) and a thickness measured along a second transverse axis (Z) perpendicular to the first, said width (_) being greater than or equal to the thickness, and said channel comprising first (3) and second (4) walls along the second transverse axis (Z); and an acoustic wave generator (10) generating acoustic waves in the channel from at least one of the walls (3; 4), said acoustic wave generator (10) operating at a frequency f that is different from a resonant frequency f0 of the channel (2) along the second transverse axis (Z).
    Type: Application
    Filed: July 30, 2012
    Publication date: August 21, 2014
    Inventors: Jean-Luc Aider, Olivier Dron, Mauricio Hoyos
  • Publication number: 20140216559
    Abstract: The present invention is directed to droplet actuators with local variation in gap height and methods of their use to facilitate droplet splitting and merging operations. The droplet actuators have increased gap-height regions that track droplet transport paths such that droplets can be transported along the paths with reduced risk of merging with droplets on adjacent paths.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 7, 2014
    Inventor: JENNIFER O. FOLEY
  • Publication number: 20140216583
    Abstract: A water drain accelerating device has a base with a discharge port connected to a flush way assembled inside a water tank. An overflow hole is connected to the discharge port. An overflow pipe is plugged to the base. The bottom of the overflow pipe is connected to the overflow hole. A negative pressure pipe is connected to the overflow pipe. Negative pressure generates inside the overflow pipe when the base is draining. Water inside the water tank flows out of the discharge port when water drains. The water level inside the cavity of the negative pressure pipe falls down with the water level inside the water tank. Negative pressure generates inside the overflow pipe, so air inside the overflow pipe can't enter into the discharge port through the overflow hole. An air pipe extends from the overflow hole to the flush way.
    Type: Application
    Filed: April 22, 2013
    Publication date: August 7, 2014
    Inventors: Youping JIANG, Rongyu Zhang, Xingdong Wang, Bing Wang
  • Publication number: 20140158213
    Abstract: Provided is an antifouling structure (4) for removing fouling on a surface (1a) of a solar cell (object) (1). The antifouling structure (4) includes a first electrode (5) and a second electrode (6) provided on the surface (1a) of the solar cell (1); a power supply (8) for applying voltage to the first electrode and the second electrode (5, 6); and a water-repellent dielectric layer (7) provided so as to cover at least one of the first electrode and the second electrode (5, 6). Voltage is applied to the first electrode and the second electrode (5, 6) from the power supply (8) such that an angle at which water (polar liquid) (10) present on the water-repellent dielectric layer (7) contacts the water-repellent dielectric layer decreases.
    Type: Application
    Filed: July 4, 2012
    Publication date: June 12, 2014
    Inventors: Kentaro Usui, Yusuke Waki, Tomoko Teranishi, Yuichi Iyama
  • Publication number: 20140150888
    Abstract: Method and device for changing the properties of at least one liquid medium, in which method the liquid medium is exposed in at least one container to vibrations in the low-frequency power ultrasonic range and, to regulate the flow speed of the liquid material in the container in which the liquid medium is present for ultrasonic irradiation and/or to regulate the internal pressure of the container, the cross-section inside a line upstream of an inlet of the container in the direction of flow and/or downstream of an outlet of the container in the direction of flow is varied by means of at least one pinch valve.
    Type: Application
    Filed: July 13, 2012
    Publication date: June 5, 2014
    Applicant: DR. HIELSCHER GMBH
    Inventors: Harald Hielscher, Thomas Hielscher, Holger Hielscher
  • Publication number: 20140151034
    Abstract: An apparatus for estimating a parameter of interest includes a conduit and a reactive media in the conduit. The reactive media interacts with a selected fluid component to control a flow parameter of the conduit. The apparatus also includes at least one sensor responsive to the flow parameter. The apparatus may be used for estimating a water content of a fluid flowing from a subterranean formation. The apparatus may include a flow path configured to convey fluid from the formation. The at least one sensor may be responsive to a pressure change in the flow path caused by interaction of the reactive media with water.
    Type: Application
    Filed: February 5, 2014
    Publication date: June 5, 2014
    Inventors: Paul JOSEPH, Tianping HUANG
  • Publication number: 20140110967
    Abstract: A method of reducing aerodynamic drag on a moving blunt-edged body, the method comprising actively generating a flow of air at a blunt edge of a body and using the generated flow of air to control an external flow of air moving relative to an edge of a moving blunt-body.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: Ramot at Tel-Aviv University Ltd.
    Inventors: Avraham SEIFERT, Vitali Palei
  • Publication number: 20140102571
    Abstract: The present teachings relate to surface tension controlled valves used for handling biological fluids. The valves controlled by optically actuating an electrowetting circuit.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 17, 2014
    Inventor: Sergey V. Ermakov
  • Publication number: 20140085765
    Abstract: Embodiments of magnetorheological systems, devices, and associated methods of control are described below are described herein. In one embodiment, a magnetorheological device includes an magnetorheological fluid, a shaft proximate and mechanically coupled to the magnetorheological fluid, and a magnetic field generator configured to generate a magnetic flux through the magnetorheological fluid along a magnetic flux path. The magnetorheological device also includes a sensor positioned in the magnetic flux path and configured to measure a current value of magnetic inductance of the magnetic flux flowing through the magnetorheological fluid.
    Type: Application
    Filed: May 2, 2012
    Publication date: March 27, 2014
    Inventors: Hakan Gurocak, Doruk Senkal, Berk Gonenc
  • Publication number: 20140051253
    Abstract: A plasma processing apparatus includes a baffle ring which separates an internal space of a vacuum chamber into a plasma space and an exhaust space. Plasma is generated in the plasma space by exciting a process gas using an energy source. The process gas is then exhausted out of the plasma space through the plasma baffle ring which surrounds an outer periphery of a substrate support. The plasma baffle ring comprises an inner support ring, an outer support ring, and vertically spaced apart circumferentially overlapping rectangular blades extending between the inner ring and the outer ring. Each blade has a major surface used to block a line of sight from the plasma space to the exhaust space, wherein the major surfaces of the blades are configured to capture nonvolatile by-products, such as plasma etch by-products, before the by-products evacuate the plasma space.
    Type: Application
    Filed: August 14, 2012
    Publication date: February 20, 2014
    Applicant: Lam Research Corporation
    Inventor: Joydeep Guha
  • Publication number: 20140014192
    Abstract: The present invention relates to a method of controlling a flow in a micro conduit system, and particularly a micro conduit system comprising one or more capillary-stop valves (6,6?) wherein the stopping ability of the capillary stop valve is overcome with the help of an acoustic wave source.
    Type: Application
    Filed: January 18, 2012
    Publication date: January 16, 2014
    Applicant: FLUIMEDIX ApS
    Inventor: Tomas Ussing
  • Patent number: 8616239
    Abstract: There is disclosed apparatus and processes for increasing fluidity of a flowing fluid. The apparatus may have a number of treatment chambers adapted to receive and pass the flowing fluid. In each treatment chamber a field is applied to the fluid. The fields may be parallel to the fluid's direction of flow, and may alternate in sequence. The fluidity of the fluid is increased through exposure to the fields.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: December 31, 2013
    Assignee: Save The World Air, Inc.
    Inventor: Douglas Bell
  • Publication number: 20130340838
    Abstract: Systems and methods are provided facilitating a steaming fluid flow utilizing acoustic waves. A system includes an acoustic wave generator and an acoustic coupler associated with the acoustic wave generator and coupling acoustic waves generated by the acoustic wave generator into a fluid. The acoustic coupler includes one or more acoustic coupling lenses, which direct the acoustic waves into the fluid and facilitate, at least in part, a streaming fluid flow in a common direction. In an enhanced embodiment, the common flow direction is at an angle to a direction acoustic waves are generated, and the acoustic coupling lens(es), in directing the acoustic waves into the fluid, redirects the acoustic waves from the direction of acoustic wave generation. The acoustic wave generator generates the acoustic waves in the megahertz or gigahertz range, for example, with a frequency of 20 MHz or higher.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: SEMATECH, INC.
    Inventor: Abbas RASTEGAR
  • Publication number: 20130333762
    Abstract: Droplet actuators that include molecular barrier coatings are provided. The molecular barrier coating may be provided atop the conductive layer of the top substrate, atop the droplet operations electrodes of the bottom substrate, or both. Where the conductive layer of the top substrate and/or the droplet operations electrodes of the bottom substrate are formed of an electrically conductive organic polymer, such as poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS), the molecular barrier coating helps to immobilize the contents of the PEDOT:PSS layer. Further, the molecular barrier coating reduces, preferably entirely eliminates, moisture from seeping into the electrically conducting organic polymer. Methods of conducting droplet operations using the disclosed droplet actuators are also provided.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 19, 2013
    Inventor: Theodore Winger
  • Publication number: 20130319537
    Abstract: In a premix supply, for supplying a fuel and oxidizer gas into a combustion chamber for burning, the premix supply having a smaller diameter flow than the combustion chamber, the premix supply comprising at least one dielectric barrier discharge device (DBD) comprising two electrodes separated by a dielectric, improved flame stability limits may be provided for the adjacent combustor by the actuation of the DBD to induce ionic wind. Both electrodes may be provided in a single wall of the premix supply. The two electrodes may be arranged substantially upstream and downstream of each other. The electrodes may be arranged to generate an ionic wind preferentially directed in a direction of flow through the premix supply.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 5, 2013
    Inventor: Wajid Ali CHISHTY
  • Publication number: 20130306177
    Abstract: Drag experienced by a vehicle traveling through an environmental media, such as air or water, may be modified by one or more energy beams which may increase or decrease drag. Environmental media may be adjusted by microwave, chemical, ultrasonic, acoustic (including subsonic, sonic, or ultrasonic), or electromagnetic energy. One or more energy beams may be directed toward a transition region between turbulent and laminar flow, at the leading edge of a laminar flow, or in the direction of a crosswind.
    Type: Application
    Filed: June 12, 2013
    Publication date: November 21, 2013
    Inventor: Peter M. Bonutti
  • Publication number: 20130291979
    Abstract: The invention regards a plasma-enhanced active laminar flow actuator system (1) adapted to an aerodynamic surface (3) which has a nano-engineered composite material layer(5) comprising a set of electrodes arranged (7?, 7?) in at least an upper (P1) and a lower (P2) plane extending parallel with the aerodynamic surface (3); the electrodes (7?, 7?) comprising nano filaments (9); the electrodes (7?) of the upper plane (P1) are arranged in the aerodynamic surface (3) such that they define a smooth and hard aerodynamic surface (3);conductors (11, 11?) of nano filaments (9?) arranged for electrical communication between a control unit (13) and each of the electrodes (7?, 7?), wherein the control unit (13) is adapted to address current between cooperating electrodes (7?, 7?) of the upper and lower plane (P1, P2) from a current supply depending upon air flow characteristic signals fed from air flow sensor means (19).
    Type: Application
    Filed: September 15, 2010
    Publication date: November 7, 2013
    Applicant: SAAB AB
    Inventors: Pontus Nordin, Göte Strindberg
  • Publication number: 20130269810
    Abstract: Apparatus for treating a fluid in a conduit by the application thereto of radio-frequency electro-magnetic signals, includes a core element of magnetically-permeable material extending around the conduit, and one or more primary coils through which the core element extends and is energized with radio-frequency electrical signals by at least one signal generator; wherein at least one of the primary coils has an extent and/or disposition circumferentially of the core element and the conduit such as to establish an effective magnetic field throughout the core element.
    Type: Application
    Filed: October 28, 2011
    Publication date: October 17, 2013
    Inventors: Daniel Stefanini, Denzil Rodrigues
  • Patent number: 8550298
    Abstract: A microfluidic dispensing system may include multiple supply lines for simultaneous filling of diaphragm pumps associated with each supply line. Each supply line may fill corresponding groups of diaphragm pumps with a corresponding ingredient to a supply reservoir for the supply line. Accordingly, different groups of diaphragm pumps corresponding to different supply lines may be filled with corresponding ingredients simultaneously. Those ingredients corresponding to the different groups of diaphragm pumps may also be dispensed simultaneously, giving rise to a faster and more efficient fluidic dispensing system.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: October 8, 2013
    Assignee: Formulatrix, Inc.
    Inventors: Kabir James Mukaddam, Jeremy Stevenson
  • Patent number: 8545772
    Abstract: An interface is provided for storing microfluidic samples in a nanoliter sample chip. A fluid access structure provides a fluid access region to a selected subset of sample wells from an array of sample wells. A fluid introduction mechanism introduces a sample fluid to the fluid access region so that the sample wells in the selected subset are populated with the sample fluid without the unselected sample wells being populated with the sample fluid.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: October 1, 2013
    Assignee: Life Technologies Corporation
    Inventors: Tanya Kanigan, Steve Smith, John Linton, Robert Hess, Karl Yoder, Colin Brennan
  • Patent number: 8539823
    Abstract: Provided is a microfluidic device. The microfluidic device includes a sample chamber in which a sample is accommodated. The sample chamber includes: an introduction portion including a loading hole through which the sample is loaded; an accommodation portion including a discharge hole; and a neck portion forming a boundary between the introduction portion and the accommodation portion. The neck portion provides a capillary pressure for controlling flow of the sample between the introduction portion and the accommodation portion.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: September 24, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Beom-seok Lee
  • Publication number: 20130233425
    Abstract: The present invention is directed to modified droplet actuators, fluids and methods for enhancing and/or maintaining oil film stability in a droplet actuator. In an exemplary embodiment, the invention provides a droplet actuator with one or more substrates arranged to form a droplet operations gap comprising gap-facing surfaces; droplet operations electrodes configured to conduct droplet operations in the droplet operations gap; at least one barrier included on at least one of the substrate surfaces and having dimensions selected to: permit droplet transport from atop a first droplet operations electrode to a second droplet operations electrode when the second droplet operations electrode is activated; and prevent movement of a droplet from atop a first droplet operations electrode when the first and second droplet operations electrodes are inactive.
    Type: Application
    Filed: April 19, 2013
    Publication date: September 12, 2013
    Inventors: Vijay Srinivasan, Vamsee K. Pamula, Ramakrishna Sista, Prasanna Thwar
  • Patent number: 8524174
    Abstract: A fluid cartridge, comprising a channel layer within which at least one circumferentially sealed fluid channel is formed, the channel layer comprising a substrate and an elastic layer fixedly arranged on the substrate, wherein the substrate has a rigidity being greater than that of the elastic layer, and wherein the at least one fluid channel is defined on at least one side thereof by the elastic layer.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: September 3, 2013
    Assignee: Agency for Science, Technology and Research
    Inventors: Levent Yobas, Lih Feng Cheow
  • Publication number: 20130192682
    Abstract: Methods and apparatus for fluid conditioning to reduce scaling, inactivate microbes, reduce surface tension, maintain fluid composition, and improve pumping are provided for use in treating crude petroleum, industrial water, agricultural water, municipal water supplies, or any fluid flow system and comprise electromagnets of variable control that can be powered or in which a current can be induced by a permanent magnet. Magnetic field direction and intensity can be selected depending on the nature of the fluid and in some embodiments, the field can be varied during operation, including pulsing and variably selecting one or more field directions and intensities, or combinations thereof, during operation. A non-magnetic fluid transfer conduit section has at least one conductor assembly mounted about the section. In one embodiment, the conductor assembly comprises a concentric, tilted double helix coil or multipole coil.
    Type: Application
    Filed: January 24, 2013
    Publication date: August 1, 2013
  • Publication number: 20130146149
    Abstract: There is disclosed apparatus and processes for increasing fluidity of a flowing fluid. The apparatus may have a number of treatment chambers adapted to receive and pass the flowing fluid. In each treatment chamber a field is applied to the fluid. The fields may be parallel to the fluid's direction of flow, and may alternate in sequence. The fluidity of the fluid is increased through exposure to the fields.
    Type: Application
    Filed: February 7, 2013
    Publication date: June 13, 2013
    Inventor: Douglas Bell
  • Publication number: 20130134041
    Abstract: A droplet can be moved along a surface of a moving surface forming member in a simple method. At both sides of the moving surface forming member 1 configured to form a moving surface on which the droplet is moved and made of a nonmagnetic material, magnetic field forming members 4A and 4B configured to form a magnetic field gradient such that intensity of a magnetic field decreases as a distance from an area where the droplet is positioned on the surface of the moving surface forming member 1 increases along the surface is provided. By relatively moving the moving surface forming member 1 with respect to the magnetic field forming members 4A and 4B along the surface, the droplet is moved along the magnetic field gradient.
    Type: Application
    Filed: January 21, 2013
    Publication date: May 30, 2013
  • Publication number: 20130126004
    Abstract: A device is disclosed for improving flow of a viscous fluid in a fluid transport conduit. The device includes a porous conduit having a passage through which the viscous fluid may pass between upstream and downstream sections of the fluid transport conduit and a casing member having a wall which extends around the porous conduit. The device is configured such that, when it is in situ, a fluid transfer chamber having at least one fluid inlet is defined between the casing member wall and porous conduit. A lubricating fluid may pass under pressure through the inlet(s) into the fluid transfer chamber and through the porous conduit into the passage to lubricate the flow of the viscous fluid being transported.
    Type: Application
    Filed: October 26, 2010
    Publication date: May 23, 2013
    Inventors: Jie Wu, Lachlan Graham, John Farrow, Bon Nguyen
  • Publication number: 20130126003
    Abstract: A thermal switch has a first substrate, a thermally conductive region on the first substrate, a thermally insulative region on the first substrate adjacent the thermally conductive region, a second substrate arranged adjacent the first substrate, a droplet of thermally conductive liquid between the first and second substrate adjacent the thermally conductive region and the thermally insulative region, and an actuator arranged on one of the first or second substrates to cause the droplet to move between the thermally conductive region and the thermally insulative region on the first substrate.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 23, 2013
    Inventors: Dirk De Bruyker, David Eric Schwartz, Ricardo Santos Roque, Sean Roark Garner, Matthew D. Eisaman, Joseph Robert Johnson
  • Patent number: 8444934
    Abstract: A microfluidic flow cell for removably interfacing with a removable-member for performing a reaction therebetween. The microfluidic flow cell device comprises at least one reaction portion defining with the removable-member a reaction chamber when in an interfaced position thereof. The microfluidic flow cell comprises at least one fluid-receiving portion for receiving a fluid therein and being in fluid communication with the reaction chamber. When the microfluidic flow cell and the removable-member are in the interfaced position, the cell is adapted to allow for the fluid in the fluid-receiving portion to flow to the reaction chamber. Devices, systems and methods comprising this microfluidic flow cell are also disclosed.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: May 21, 2013
    Assignee: Universite Laval
    Inventor: Regis Peytavi
  • Publication number: 20130118621
    Abstract: A microfluidic device for transporting a fluid, in particular a micropump or microvalve. The device has films, which lie against each other at film surfaces facing each other and are connected to each other in such a way that a transport channel to be formed between the films is defined, Deflecting apparatuses for forming the transport channel by jointly deflecting the films lie against each other in a direction perpendicular to the film surfaces. A deflecting surface region of the rear film in the deflection direction lies within the deflecting surface region of the front film in the deflection direction defined by the connection between the films.
    Type: Application
    Filed: May 31, 2011
    Publication date: May 16, 2013
    Applicant: thinXXS Microtechnology AG
    Inventors: Lutz Weber, Michel Neumeier
  • Patent number: 8436219
    Abstract: Method for reducing loss of flow due to hydrate solids deposits and wax deposition in a pipeline without the aid of chemicals and system for transporting a flow of wellstream hydrocarbons containing water, using a main pipeline and a cold-flow reactor connected to the main pipeline or within or forming a part of the pipeline, wherein at least a portion of the wellstream is fed to the cold-flow reactor. Also provided is a method for preventing hydrate nucleation and growth in a pipeline and preventing hydrate agglomeration as well as for preventing wax deposition. The provided method eliminates the use of energized equipment for melting, grinding or scraping hydrate solids from inside of pipelines or flowlines. Generating dry hydrates to be mixed with main flow of a wellstream is also described.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: May 7, 2013
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Larry D. Talley, Douglas J. Turner, Douglas K. Priedeman
  • Publication number: 20130074803
    Abstract: A device for creating a magnetic field in a fuel line of a fuel burning apparatus includes a pair of magnets each having a substantially flat north pole and a substantially flat south pole and mounted by a holder on opposite sides of the fuel line with the north pole of one magnet facing the south pole of the other magnet to create a magnetic field between the facing north and south poles, the magnetic field passing through the fuel line. The magnets are mounted so that the north pole and south pole are substantially parallel to one another and to the fuel line. The holder may include magnet brackets mounted on the fuel line by a connector, such as a strap device, extending through the brackets. Spacers can be used on the strap to properly space the magnets so they remain opposite one another.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Inventor: D. Ross Murray
  • Patent number: 8398938
    Abstract: A microfluidic thermal bend actuated pressure pulse valve having an inlet for receiving a flow of liquid, an outlet for outputting the flow of liquid, a meniscus anchor between the inlet and the outlet such that the flow from the inlet towards the outlet stops at the meniscus anchor where the liquid forms a meniscus, a movable member for contacting the liquid, and, a thermal expansion actuator for displacing the movable member to generate a pulse in the liquid to dislodge the meniscus such that the liquid flow towards the outlet resumes.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: March 19, 2013
    Assignee: Geneasys Pty Ltd
    Inventors: Mehdi Azimi, Matthew Taylor Worsman, Kia Silverbrook
  • Publication number: 20130043150
    Abstract: The present invention provides a droplet manipulation method capable of manipulating a droplet only by magnetic-field manipulation without physical manipulation such as electric-field manipulation, and a droplet manipulation device with which such a method can be implemented. A droplet manipulation device for transporting a droplet in a droplet encapsulating medium, comprising: a container 4 which holds the droplet encapsulating medium; a droplet 12,13,14 composed of a water-based liquid; a gel-state droplet encapsulating medium 31 which is insoluble or poorly soluble in the water-based liquid; magnetic particles 8 included in the droplet composed of the water-based liquid; and means for applying a magnetic field to generate a magnetic field 61 to transport the droplet together with the magnetic particles. A method for manipulating a droplet in a droplet encapsulating medium held in a container, using the devise.
    Type: Application
    Filed: February 2, 2011
    Publication date: February 21, 2013
    Applicant: Shimadzu Corporation
    Inventor: Tetsuo Ohashi
  • Publication number: 20130037149
    Abstract: Electronic-fluidic hybrid form dividers, constructed by a simple planer droplet generation structure, a pair of signal electrodes, and a responsive control valve, which is programmed to respond to only certain signal droplets, by a basic electronic principle: change of voltage share between impedances. Detected fluidic information is addressed in both electronic and fluidic forms, and the fluidic pathway is well-confined in a simple planar structure, although its control valve is in a second layer, thereby minimizing any fluidic disturbance. Various configurations comprise a plurality of identical structures, which can alter their cumulative function by re-assignment of required voltage share. The hybrid divider can be assembled into a fluidic universal logic gate, of a simple two inlet and one outlet signal channels structure, and switch between sixteen functions by re-assigning voltage share.
    Type: Application
    Filed: April 11, 2011
    Publication date: February 14, 2013
    Inventors: Weijia Wen, Limu Wang, Xiang Wang, Shunbo Li