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公开(公告)号：US20160356679A1
公开(公告)日：2016-12-08
申请号：US15238598
申请日：2016-08-16
Applicant: Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Huishao He , Qiufeng Ma , Ziran Zhao , Yinong Liu , Yaohong Liu , Weiping Zhu , Xiang Zou , Jianping Chang
CPC classification number: G01N1/24 , G01N1/2211 , G01N30/30
Abstract: A sampling device and a gas curtain guide are disclosed. In one aspect, the sampling device includes a chamber body. The chamber body includes a sample inlet, located at a first end of the chamber body, configured for suction of a sample. The chamber body further includes a sample outlet, located adjacent to a second end opposite to the first end of the chamber body, configured to discharge the sample. The chamber body further includes a gas inflation inlet, in a wall of the chamber body, configured to introduce a swirl gas flow into the chamber body. The chamber body further includes a gas exhaust opening configured to discharge gas so as to, together with the gas inflation inlet, generate a tornado type gas flow in the chamber body, which moves spirally from the first end to the second end of the chamber body.
Abstract translation: 公开了一种采样装置和气幕导引装置。 在一个方面，采样装置包括室主体。 腔体包括位于腔室主体的第一端处的样品入口，其构造成用于抽吸样品。 腔室主体还包括样品出口，其位于与腔体主体的第一端相对的第二端附近，被配置为排出样品。 腔室主体还包括气室充气入口，其在腔室主体的壁中，构造成将旋流气流引入腔体。 室体还包括排气口，该气体排出口被构造成排出气体，以便与气体充气入口一起在室主体中产生龙卷风型气流，其从室主体的第一端至第二端螺旋地移动 。
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公开(公告)号：US10429348B2
公开(公告)日：2019-10-01
申请号：US16376986
申请日：2019-04-05
Applicant: Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Huishao He , Qiufeng Ma , Weiping Zhu , Xiang Zou , Jianping Chang , Song Liang
IPC: H01J49/00 , G01N27/62 , H01J49/04 , G01N1/22 , G01N1/02 , G01N1/40 , G01N1/42 , G01N30/60 , G01N30/72
Abstract: A detection apparatus and a detection method are disclosed. In one aspect, the detection apparatus includes a sampling device for collecting samples to be checked. It further includes a sample pre-processing device configured to pre-process the sample from the sampling device. It further includes a sample analyzing device for separating samples from the pre-processing device and for analyzing the separated samples. The detection apparatus is miniaturized and highly precise, and is capable of quickly and accurately detecting gaseous phase or particulate substances, and it has applications for safety inspections at airports, ports, and subway stations.
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公开(公告)号：US10338236B2
公开(公告)日：2019-07-02
申请号：US15719571
申请日：2017-09-29
Applicant: NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
Inventor： Yuanjing Li , Ziran Zhao , Jianmin Li , Yulan Li , Weibin Zhu , Xiang Zou , Qingjun Zhang , Chunguang Zong , Xiaolin Zhao , Shuwei Li , Junxiao Wang
Abstract: This disclosure provides a radiation detection apparatus and a method, a data processing method and a processor, which relates to the field of radiation detection technology. Wherein, the radiation detection apparatus of this disclosure comprises: a radiation detector which generates an electrical signal by interacting with X-rays; an Analog-to-Digital Converter (ADC) which is coupled to the radiation detector and transmits the electrical signal to a waveform data; and a data processor which receives the waveform data from the ADC, determines the number of single photon signals according to the waveform data, and determines whether an integral signal and/or a count signal of the waveform data will be used for imaging according to the number of the single photon signals.
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公开(公告)号：US10234436B2
公开(公告)日：2019-03-19
申请号：US15827703
申请日：2017-11-30
Applicant: Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Ziran Zhao , Weiping Zhu , Huishao He , Qiufeng Ma , Xiang Zou , Biao Cao
Abstract: The present disclosure provides a gas chromatography-ion mobility spectrometry apparatus, including a housing, an injection port mounted to and connected with the housing and configured for input of a gas containing a sample therein, a multicapillary column configured for separation of a gas substance and an ion mobility tub configured for analysis of the gas substance. The gas chromatography-ion mobility spectrometry apparatus further includes: a gas path part connected with the ion mobility tube and configured for providing the gas to the ion mobility tube and receiving a gas discharged from the ion mobility tube; and a buffer base part detachably mounted to the housing and configured to isolation vibration outside the buffer base part, the ion mobility tube being disposed on the buffer base part, wherein the gas path part is mounted in an interior space of the buffer base part.
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公开(公告)号：US10032616B2
公开(公告)日：2018-07-24
申请号：US14985219
申请日：2015-12-30
Applicant: Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Weiping Zhu , Huishao He , Qiufeng Ma , Yaohong Liu , Xiang Zou , Jianping Chang
IPC: G01N1/40 , G01N1/44 , G01N30/14 , G01N30/16 , G01N30/20 , H01J49/00 , B01D53/02 , B01D59/26 , B01D15/02 , H01J49/04
Abstract: A sample introduction device comprises a sampling unit, a gas suction pump, adsorption units, a piston cylinder and a desorption cylinder that comprises a desorption chamber, a carrier-gas inlet, a split/purge vent and an analyzer nozzle communicating with the desorption chamber. A heating film and a temperature sensor are provided on outer wall of the desorption cylinder. The piston cylinder above the desorption cylinder comprises two piston chambers, each of which is provided with the adsorption unit and in communication with the desorption chamber. The piston cylinder comprises a sample-gas inlet connected to the sampling unit and a gas-suction-pump orifice connected to the gas suction pump, each of which can communicate with both piston chambers. Each adsorption unit comprises an adsorption cylinder-like screen for holding adsorbents and a piston rod slidably mounted in the piston chamber. Each adsorption cylinder-like screen can simultaneously communicate with the sample-gas inlet and gas-suction-pump orifice.
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Patent Agency Ranking
公开(公告)号：US20180182606A1
公开(公告)日：2018-06-28
申请号：US15832193
申请日：2017-12-05
Applicant: Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Yanchun Wang , Ziran Zhao , Xianghua Li , Qiufeng Ma , Ge Li , Biao Cao , Qi Mao , Xiang Zou
CPC classification number: H01J49/168 , G01N27/622 , H01J49/0013 , H01J49/022
Abstract: The present disclosure provides an ion mobility spectrometer, which comprises: a power supply circuit, configured to provide a power supply voltage; a corona discharge configured to generate ions to be subjected to measurement, through corona discharge; an ion migration circuit configured to control migration of the ions; a migration zone structure configured to realize, under control of the ion migration circuit, mobility spectrum measurement of the ions which pass through the migration zone structure; a redundant charge extraction electrode arranged between the corona discharge structure and the migration zone structure, so that the ions which are generated by the corona discharge structure can pass therethrough to reach the migration zone structure; and a redundant charge extraction circuit, wherein the redundant charge extraction electrode is connected to the ground through the redundant charge extraction circuit.
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公开(公告)号：US09772306B2
公开(公告)日：2017-09-26
申请号：US15115217
申请日：2015-12-24
Applicant: NUCTECH COMPANY LIMITED
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Yinong Liu , Yaohong Liu , Qiufeng Ma , Huishao He , Weiping Zhu , Xiang Zou , Jianping Chang , Song Liang
CPC classification number: G01N27/622 , G01N27/64 , G01N30/30 , G01N30/46 , G01N30/466 , G01N2030/3038
Abstract: The present invention discloses a gas analyzing apparatus and a sampling device. The gas analyzing apparatus includes a sampling device and an ion mobility spectrum analysis device. The sampling device includes a multi-capillary column and a temperature control system. The ion mobility spectrum analysis device is adapted for analyzing a gas leaded-in by the sampling device and includes a reaction cavity for reaction between sample molecules and reaction ions, the cavity having a sampling opening for leading-in of the gas. An outlet end of the multi-capillary column is inserted directly into the cavity of the ion mobility spectrum analysis device through the sampling opening of the ion mobility spectrum analysis device.
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公开(公告)号：US09513266B2
公开(公告)日：2016-12-06
申请号：US14577653
申请日：2014-12-19
Applicant: Nuctech Company Limited
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Qiufeng Ma , Ziran Zhao , Yinong Liu , Yaohong Liu , Xiang Zou , Yanchun Wang , Junxiao Wang , Jianping Chang
CPC classification number: G01N30/7206 , G01N27/622 , G01N27/64 , H01J49/0422
Abstract: A GC-IMS system is disclosed. The system includes a sample transfer device. The sample transfer device connects the gas chromatograph to the reaction region and, the sample from the gas chromatograph is transferred to the reaction region by the sample transfer device. With the GC-IMS system, generation of sample molecular ion fragments can be avoided so that the spectrum is easily identified; moreover, the application field of the GC-IMS system is extended to a range of analysis of organic macromolecule samples which have a high polarity, are difficult to volatilize, and are thermally instable. On the other hand, the GC-IMS system overcomes the defect of ion destruction due to neutralization reaction among positive and negative ions so as to evade the detection.
Abstract translation: 公开了一种GC-IMS系统。 该系统包括样品转移装置。 样品转移装置将气相色谱仪连接到反应区域，样品转移装置将样品从气相色谱仪转移到反应区域。 使用GC-IMS系统，可以避免样品分子离子片段的产生，从而可以容易地鉴定光谱; 此外，GC-IMS系统的应用领域扩展到具有高极性，难以挥发和热不稳定的有机大分子样品的分析范围。 另一方面，GC-IMS系统克服了由于正离子和负离子之间的中和反应引起的离子破坏的缺陷，以避免检测。
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公开(公告)号：US20200212251A1
公开(公告)日：2020-07-02
申请号：US16727573
申请日：2019-12-26
Applicant: Tsinghua University , NUCTECH COMPANY LIMITED
Inventor： Wenjian Zhang , Qingjun Zhang , Xiang Zou , Yiyan Gong
IPC: H01L31/18 , H01L27/146 , H01L31/0236
Abstract: Embodiments of the present disclosure disclose a backside processing method for a back-illuminated photoelectric device. The backside processing method includes: mechanically thinning the back-illuminated photoelectric device such that a thickness of the back-illuminated photoelectric device reaches a first desired thickness; and chemically thinning and chemically polishing the back side of the mechanically thinned back-illuminated photoelectric device by using a nitric acid solution and a hydrofluoric acid solution such that the thickness of the mechanically thinned back-illuminated photoelectric device reaches a second desired thickness and a surface roughness of the back side of the back-illuminated photoelectric device reaches a desired surface roughness.
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公开(公告)号：US10408804B2
公开(公告)日：2019-09-10
申请号：US15276595
申请日：2016-09-26
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Qingjun Zhang , Yuanjing Li , Zhiqiang Chen , Ziran Zhao , Weiping Zhu , Yaohong Liu , Qiufeng Ma , Xiang Zou , Huishao He , Jianping Chang , Song Liang
IPC: G01N30/72 , G01N23/085 , G01B15/00 , G01N30/84
Abstract: A darkroom type security inspection apparatus and a method of performing an inspection using the darkroom type security inspection apparatus. An apparatus includes a housing constituting a closed darkroom, and assemblies disposed inside the housing. The assemblies disposed inside the housing include: a sample collecting unit configured to collect a sample, a conveyor unit, and a X-ray detection unit to detect a position of the objected to be inspected, wherein the X-ray detection unit is configured to determine the position of the objected to be inspected within the sampling assembly so that the object to be inspected together with the conveyor unit is conveyed to an expected position; and a sample processing assembly, wherein the assemblies disposed inside the housing are communicated by fittings or connectors.
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