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1.发明授权公开(公告)号：US11067538B2
公开(公告)日：2021-07-20
申请号：US16088103
申请日：2017-03-21
Applicant: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Inventor： Bradley B. Schneider , Erkinjon Nazarov , Thomas R. Covey
IPC: G01N27/624 , H01J49/00 , H01J49/16
Abstract: An apparatus includes a first electrode and a second electrode. The second electrode is placed in parallel with the first electrode to provide constant gap distance. The gap between the first electrode and the second electrode is at atmospheric pressure. Ions are introduced into the center of the gap and travel through the apparatus in a direction parallel to the first electrode and the second electrode. The apparatus is configured as a high-field symmetric-waveform apparatus for filtering high mobility ions or for fragmenting ions. The apparatus is also configured for three modes of operation: as a conventional DMS; as a filter high mobility ions; and as fragmentation device. A symmetric electric field is produced in the gap with a maximum density normalized field strength greater than 10 Td to filter high mobility ions and with a maximum density normalized field strength greater than 100 Td to fragment ions.
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Patent Agency Ranking
公开(公告)号：US20160334369A1
公开(公告)日：2016-11-17
申请号：US15107487
申请日：2014-11-18
Applicant: DH TECHNOLOGIES DEVELOPMENT PTE LTD.
Inventor： Thomas R. Covey , Bradley Schneider , Erkinjon Nazarov
CPC classification number: G01N27/624 , H01J49/0031
Abstract: A method and apparatus for performing differential mobility spectrometer (DMS) which includes decreasing the amount of time that ions spend inside fringing fields generated by the DMS. The apparatus includes an entrance electrode plate sealingly engaged to the entrance of the DMS, and is electrically separated from the parallel plate electrodes of the DMS, the entrance electrode plate has an aperture for allowing the traversal of ions into the DMS; wherein the cross-sectional area of the aperture is less than the cross-sectional area of the ion path, the ion path being located between the two parallel plate electrodes of the DMS. The entrance electrode plate may also have a focusing potential applied to it for focusing of ions.
Abstract translation: 一种用于执行差分迁移率光谱仪（DMS）的方法和装置，其包括减少离子在由DMS产生的边缘场内消耗的时间量。 该装置包括密封地接合到DMS的入口的入口电极板，并且与DMS的平行板电极电隔离，入口电极板具有用于允许离子穿过DMS的孔; 其中所述孔的横截面面积小于所述离子路径的横截面面积，所述离子路径位于所述DMS的两个平行板电极之间。 入口电极板还可以具有施加到其上用于聚焦离子的聚焦电势。
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3.发明申请公开(公告)号：US20190113478A1
公开(公告)日：2019-04-18
申请号：US16088103
申请日：2017-03-21
Applicant: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Inventor： Bradley B. Schneider , Erkinjon Nazarov , Thomas R. Covey
Abstract: An apparatus includes a first electrode and a second electrode. The second electrode is placed in parallel with the first electrode to provide constant gap distance. The gap between the first electrode and the second electrode is at atmospheric pressure. Ions are introduced into the center of the gap and travel through the apparatus in a direction parallel to the first electrode and the second electrode. The apparatus is configured as a high-field symmetric-waveform apparatus for filtering high mobility ions or for fragmenting ions. The apparatus is also configured for three modes of operation: as a conventional DMS; as a filter high mobility ions; and as fragmentation device. A symmetric electric field is produced in the gap with a maximum density normalized field strength greater than 10 Td to filter high mobility ions and with a maximum density normalized field strength greater than 100 Td to fragment ions.
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公开(公告)号：US09835588B2
公开(公告)日：2017-12-05
申请号：US15107487
申请日：2014-11-18
Applicant: DH Technologies Development PTE Ltd.
Inventor： Thomas R. Covey , Bradley Schneider , Erkinjon Nazarov
CPC classification number: G01N27/624 , H01J49/0031
Abstract: A method and apparatus for performing differential mobility spectrometer (DMS) which includes decreasing the amount of time that ions spend inside fringing fields generated by the DMS. The apparatus includes an entrance electrode plate sealingly engaged to the entrance of the DMS, and is electrically separated from the parallel plate electrodes of the DMS, the entrance electrode plate has an aperture for allowing the traversal of ions into the DMS; wherein the cross-sectional area of the aperture is less than the cross-sectional area of the ion path, the ion path being located between the two parallel plate electrodes of the DMS. The entrance electrode plate may also have a focusing potential applied to it for focusing of ions.
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5.发明授权公开(公告)号：US12247947B2
公开(公告)日：2025-03-11
申请号：US17325483
申请日：2021-05-20
Applicant: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Inventor： Bradley B. Schneider , Erkinjon Nazarov , Thomas R. Covey
IPC: G01N27/624 , H01J49/00 , H01J49/16
Abstract: An apparatus includes a first electrode and a second electrode. The second electrode is placed in parallel with the first electrode to provide constant gap distance. The gap between the first electrode and the second electrode is at atmospheric pressure. Ions are introduced into the center of the gap and travel through the apparatus in a direction parallel to the first electrode and the second electrode. The apparatus is configured as a high-field symmetric-waveform apparatus for filtering high mobility ions or for fragmenting ions. The apparatus is also configured for three modes of operation: as a conventional DMS; as a filter high mobility ions; and as fragmentation device. A symmetric electric field is produced in the gap with a maximum density normalized field strength greater than 10 Td to filter high mobility ions and with a maximum density normalized field strength greater than 100 Td to fragment ions.
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6.发明申请公开(公告)号：US20210270774A1
公开(公告)日：2021-09-02
申请号：US17325483
申请日：2021-05-20
Applicant: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Inventor： Bradley B. Schneider , Erkinjon Nazarov , Thomas R. Covey
IPC: G01N27/624 , H01J49/00 , H01J49/16
Abstract: An apparatus includes a first electrode and a second electrode. The second electrode is placed in parallel with the first electrode to provide constant gap distance. The gap between the first electrode and the second electrode is at atmospheric pressure. Ions are introduced into the center of the gap and travel through the apparatus in a direction parallel to the first electrode and the second electrode. The apparatus is configured as a high-field symmetric-waveform apparatus for filtering high mobility ions or for fragmenting ions. The apparatus is also configured for three modes of operation: as a conventional DMS; as a filter high mobility ions; and as fragmentation device. A symmetric electric field is produced in the gap with a maximum density normalized field strength greater than 10 Td to filter high mobility ions and with a maximum density normalized field strength greater than 100 Td to fragment ions.
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