Apparatus and method for managing gas flow
    1.
    发明专利
    Apparatus and method for managing gas flow 审中-公开
    用于管理气体流量的装置和方法

    公开(公告)号:JP2007066903A

    公开(公告)日:2007-03-15

    申请号:JP2006233023

    申请日:2006-08-30

    CPC classification number: H01J49/10

    Abstract: PROBLEM TO BE SOLVED: To provide an ion source used in a mass spectroscometer system, capable of obtaining excellent spectrum stability and sensitivity of the apparatus as a whole. SOLUTION: The ion source consists of (a) an ionization device for generating ions and sending them to ionization region, (b) a collecting conduit adjacent to the ionization device for collecting ions generated by the ionization device, (c) a first gas source supplying gas for desolvation of the ions generated by the ionization device, and (d) a second gas source supplying gas to the ionization region at a given flow velocity. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供用于质谱系统中的离子源,能够获得整体上该装置的优异的光谱稳定性和灵敏度。 解决方案:离子源包括(a)用于产生离子并将其发送到电离区的离子化装置,(b)与电离装置相邻的收集管,用于收集由电离装置产生的离子,(c) 第一气体源供应气体,用于去离子化由离子化装置产生的离子,以及(d)以给定的流速向离子化区域供应气体的第二气体源。 版权所有(C)2007,JPO&INPIT

    MEANDERING CATAPHORETIC CHANNEL WITH REDUCED RACE TRACK EFFECT

    公开(公告)号:JP2001183340A

    公开(公告)日:2001-07-06

    申请号:JP2000357345

    申请日:2000-11-24

    Abstract: PROBLEM TO BE SOLVED: To provide a cataphoretic channel that minimizes race track effect. SOLUTION: A cataphoretic system (AP1) includes a microanalysis capillary tube cataphoretic channel (10) of plane meandering, and a power supply (12) for generating electrolysis. The channel includes linear sections (24 and 26), and curvature part (30 and 32) of 180 deg. for joining the linear sections. Each curvature part has inside and outside curvature walls (46) and (48). The inside curvature wall includes inflexion points (54, 58, 66, and 70). Each outside curvature wall has arcs (80 and 84) with a quarter circle, and does not have any inflexion points. The gap between the tracks of different migration is reduced by a narrow part being demarcated in such manner, thus reducing race track effect.

    Microfluidic apparatus with at least one microchannel or nanochannel

    公开(公告)号:GB2446254A

    公开(公告)日:2008-08-06

    申请号:GB0800269

    申请日:2008-01-08

    Abstract: The apparatus. e.g. a chromatograph, has a buried silicon oxide layer 104, e.g. between two silicon layers 102, 106, with at least one fluid channel, particularly a nanochannel. The channel can be made in the buried layer 104 by an etching method that selectively removes silicon oxide but not silicon. Thus, one dimension of the resulting fluid channel is limited by the thickness of the buried oxide layer 104. It is possible to manufacture a very thin buried oxide layer 104 with great precision, thus a nanochannel can be fabricated in a controlled manner. Moreover, in addition to buried oxide, any pairs of substances with a high etch ratio with respect to each other can be used in the same way.

    Serpentine electrophoresis channel designed to overcome dispersive race track effect, has straight sections connected by curves including smaller bends

    公开(公告)号:DE10039651A1

    公开(公告)日:2001-06-13

    申请号:DE10039651

    申请日:2000-08-14

    Abstract: The electrophoresis channel (AP1) separates components longitudinally. Its straight sections are connected by curves (30) with inner and outer edges and constrictions (42). Preferred features: The minimal width of the channel is between a quarter and three quarters of the upstream and downstream widths. The inner curved wall has a length exceeding that of a reference curve as parallel as possible to the outer curved wall, extending from the upstream inner end point to the downstream inner end point of the curve. The outer curved wall has a length differing from channel length, the actual difference being the same as the length of the outer curved wall less the length of the inner curved wall. The channel defines a reference difference which is the same as the length of the outer curved wall less the reference length. The actual difference is less than the reference difference. The actual difference is less than half the reference difference. The inner curved wall has at least one bend. It has more bends than the outer curved wall. The inner curved wall has at least two bends in its curvature., the outer curved wall has none. A power supply provides an electric field along the channel.

    Micro-device with electro-spray emitter

    公开(公告)号:GB2370519A

    公开(公告)日:2002-07-03

    申请号:GB0126980

    申请日:2001-11-09

    Abstract: A micro-device 10 comprises a planar substrate 12 with a microchannel 18 a cover plate 30, sample inlet port 20 and a protruding electro-spray emitter 42 suitably shaped to permit the formation of a Taylor cone from a sample passing there-through, under the influence of an electric field. Fig. 1C showing the device post removal of portions of material to form the protrusion of the electro-spray emitter 42. Also disclosed is a method of manufacture of the aforementioned micro-device comprising the use of "non-mechanical" material removal means, negating the need for "photo-resist masking", such as laser ablation or photochemical etching. Further disclosed is the use of the aforementioned micro-device in electro-spray emission, involving the passing a sample through the device and forming a Taylor cone of a sample material under the influence of an electric field at the mouth 22 of the emitter 42. The micro-device 10 may be used in the preparation of samples for subsequent processing in a mass-spectrometer. The device 10 may be composed of a polymeric material, the emitter 42 may be coated in metal. A variety of emitter 42 shapes are disclosed in later figures. The microchannel may be in the order of 1žm to 200 žm in cross-section.

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