Abstract:
PROBLEM TO BE SOLVED: To improve a function of an electro spray device disposed so that a spray needle and an ion extraction interface become orthogonal to each other. SOLUTION: An interface axis 122 is disposed in a relationship so as to cross a spray nozzle axis 124, an angle defined between the nozzle axis 124 and the interface axis 122 are set from around 75 ° and around 105 °. An interface 106 is possible to operate to accept a voltage from an interface power source, and an auxiliary electrode 140 can operate for accepting a voltage from an auxiliary power source. The electrode 140 can operate, to regulate electric field at an outlet orifice and disposed in a relationship possible to operate against the orifice. The electro spray device can operate to define an ion passage, through which ions on their ways from the orifice to an inlet are passed and the electrode 140 is disposed outside the ion passage. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an improved microflow control system for reducing delay time in gradient high-speed liquid chromatography. SOLUTION: In this method, a device, which includes a mechanism for optionally diverting a part of mobile phase, flowing through a mobile phase transport pipe, into a liquid transport pipe containing stationary phase to separate sample components, is used. This device is equipped with the liquid transport pipe, containing stationary phase communicated with at least one mobile phase transport pipe which includes the mechanism for optionally diverting a part of mobile phase flowing through the mobile phase transport pipe, and the remainder of the mobile phase flows into the liquid transport pipe containing the stationary phase. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an improved fluid technology which is capable of using gradient liquid chromatography and reducing the amount of waste liquid, free of complications, has reproducibility, and shortens the delay time. SOLUTION: A fluidic device is provided with a plurality of fluid-transporting features, extending from a common inlet to a common outlet, and a means for effecting a fluid flow through the fluid-transporting features. Each feature has a differing fluid dwell time. The means for effecting a fluid flow cooperates with the fluid-transporting features, merges fluids from the fluid-transporting features, and produces an output stream from the common outlet. The output stream exhibits at least one desired characteristic generated as the result of the differing dwell times. It is thereby possible to generate a stream of a micro-volume flow rate and to obtain a smooth gradient in gradient liquid chromatography also. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide microfluidic device which has a configuration for enabling an easier interconnection with an analytical instrument and its forming method by using caddie. SOLUTION: This fluid device 10 includes body section 11 and adjacent conductive layer 100. The body section 11 comprises inner surface and outer surface. The inner surface demarcates well and fluid carrier feature 25 such as micro feature in which well and fluid are fluently communicating. The adjacent conductive layer 100 is located on well sidewall 46S and selected area on inner/outer surfaces, where a contact pad area is formed on the outer surface 44 as electrically-connected with an arbitrary fluid in the fluid carrier feature 25. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a micro fluidic separation device reduced in broadening of a band. SOLUTION: The present invention provides the fluidic separation device 10 and method capable of reducing sample broadening. A column 25 is arranged in a downstream of a holding chamber 53, and a fluid supply means provides a fluid flow effective to convey a sample along a flow passage extended from the holding chamber up to the separation column. A sample is usually converged in the flow passage in an upstream of the separation column. An electrospray mass spectrometer may be provided optionally, and may be used in microfluid application. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for multi-dimensional separation of samples, which is suitably applicable to biological molecular analysis although it is easy to manufacture and simple in structure. SOLUTION: The device for separation comprises a first substrate containing a first separated fluid transport mechanism for separating molecules in a sample according to a first characteristic and a second substrate including a second separated fluid transport mechanism for separating molecules in the sample according to a second characteristic. The first and second substrates are located in different planes, and the first and second separated fluid transport mechanisms are mutually connectable by being controlled. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electrospray device capable of reproducing a Taylor cone by a device for a polymer without increasing the volume of the cone. SOLUTION: This electrospray device 108 comprises; a body 116; a tip 118 extending from the body 116 and containing a polymer material; and a hydrophobic coating 160 substantially selectively covering the tip 118. The hydrophobic coating 160 is formed of a nonconductive material. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A liquid chromatography (LC) column includes a wall having a length along a central axis from the inlet end to the outlet end, the wall enclosing a column interior and having a column radius relative to the central axis, the wall comprising a structured portion configured such that the column radius varies along the length; and a plurality of particles packed in the column interior, wherein at least some of the particles are in contact with the structured portion.
Abstract:
System (1), umfassend: einen Chromatographiesäulenadapter (10) mit einem Kanal (11), der sich zwischen einer ersten Seite (13) und einer zweiten Seite (14) des Chromatographiesäulenadapters (10) erstreckt; eine Chromatographiesäule (30), die zur Fluidkommunikation mit dem Kanal (11) an der ersten Seite (13) des Chromatographiesäulenadapters (10) ankoppelbar ist; eine Kapillare (20), die zur Fluidkommunikation mit dem Kanal (11) an der zweiten Seite (14) des Chromatographiesäulenadapters (10) mit einer Stirnseite (22) voran in einer Einsetzrichtung (A) in den Kanal (11) einsetzbar ist. Um das Chromatographieverhalten zu verbessern, verjüngt sich eine Mantelfläche (21) der Kapillare (20) zur Stirnseite (22) hin und ist derart konfiguriert, dass in einem in den Kanal (11) eingesetzten Zustand bei Beaufschlagung der Kapillare (20) mit einer Kraft in Einsetzrichtung (A) eine Presspassung zwischen der Mantelfläche (21) der Kapillare (20) und dem Chromatographiesäulenadapter (10) im Bereich des Kanals (11) realisiert ist. Weiterhin ist ein System (60) zum Klemmen einer Chromatographiesäulenanordnung offenbart.
Abstract:
Fluidic separation devices and methods with reduced sample broadening are provided. A column is located downstream from a holding chamber, and a flow providing means provides fluid flow effective to convey a sample along a flow path that extends from the holding chamber into the separation column. The sample is typically focused in the flow path upstream from the separation column. Optionally, the invention may be employed with electrospray mass spectrometry and in microfluidic applications.