-
公开(公告)号：US11802859B2
公开(公告)日：2023-10-31
申请号：US17120239
申请日：2020-12-13
Inventor： Yuanjie Su , Qichen Gong , Yanmeng Chen , Guangzhong Xie , Huiling Tai , Xiaosong Du , Yadong Jiang
CPC classification number: G01N33/0059 , G01N27/12 , G01N27/122 , G01N27/125 , G01N33/0027 , G01N33/0031 , G01N33/0047 , H02N1/04 , G01N27/128 , G01N33/0009
Abstract: The disclosure relates to a wireless self-powered gas sensor based on electromagnetic oscillations triggered by external forces and its fabrication method. The sensor includes a gas test chamber, a first friction layer, a second friction layer, an interdigital electrode, a gas-sensitive material, an air inlet, an air outlet and leads. The gas sensor of the disclosure is an integrated detection system of “environmental energy collection—wireless energy transmission—active spontaneous detection” that can be driven simultaneously only by external mechanical movement, and can work independently without external power supply. The first friction layer and the second friction layer are arranged outside the gas test chamber. The frictional motion will not interfere with the flow field of the test chamber and the gas molecule absorption and desorption, which ensures the stability of gas detection to the greatest extent.
-
2.发明申请公开(公告)号：US20190077056A1
公开(公告)日：2019-03-14
申请号：US16188304
申请日：2018-11-13
Inventor： Weizhi Li , Yuming Wu , Xiaosong Du , Jimeng Li , Huiling Tai , Guangzhong Xie
Abstract: A one-step solution casting method for preparing a PVDF-based pyroelectric polymer film is provided, which belongs to the technical field of functional material preparation. The method comprises steps of: treating a substrate with a hydrophilic reagent to obtain a hydrophilically-modified substrate, and then casting the organic solution of polyvinylidene fluoride (PVDF) or its copolymer on the hydrophilically-modified substrate. After cured, the as-casted PVDF-based film shows pyroelectricity without undergoing any stretching or poling post-treatment, indicates that the dipoles of the one-step prepared film are aligned. The self-polarization of the prepared film is attributed to a hydrogen bond induced layer-by-layer electrostatic self-assembly growth mechanism. The method is simple, low cost, high efficient, high capability to produce thick and large-area film with smooth morphology and ease to be scalized.
-
3.发明申请公开(公告)号：US20170086259A1
公开(公告)日：2017-03-23
申请号：US15371205
申请日：2016-12-07
Inventor： Xiaosong Du , Yaru Li , Yuming Wu , Qi Yao , Pengfei Guo , Huan Yuan , Huiling Tai
Abstract: The present invention relates to a serpentine film heater for adjusting temperature uniformity and a method of temperature adjusting, including a substrate and a serpentine film heating wire which is deposited on the substrate, wherein the serpentine film heating wire is formed by several parallel heating sections and connecting lines. In the longitudinal direction, the temperature uniformity is improved by adjusting the spacings between adjacent heating sections or line widths of the heating sections separately or in combination. In the transverse direction, the every heating section is adjusted to a shape which is wide in center and narrow at two ends. By adjusting the spacings and line widths in both transverse and longitudinal directions the present invention reduces heating power in the central part of the substrate and increases the heating power on the edges, thus compensates the heat transfer difference between center and edges and improves the temperature uniformity.
-
公开(公告)号：US10730226B2
公开(公告)日：2020-08-04
申请号：US15893678
申请日：2018-02-11
Inventor： Weizhi Li , Jimeng Li , Yuming Wu , Xiaosong Du , Huiling Tai , He Yu
IPC: B29C55/04 , C08J5/18 , B29C41/00 , B29C41/02 , B29C41/46 , B29C55/00 , B29L7/00 , B29K27/00 , B29K105/00
Abstract: A method for preparing a pyroelectric polymer film based on a combined process of solution casting and uniaxial stretching is disclosed. The pyroelectric polymer film is firstly prepared by solution casting, afterwards, the casted film is subjected to uniaxial stretching when the film is in a semi-cured state (wet film). Thus a larger stretching ratio (>10) at a lower temperature (even at room temperature) is realized. Without undergoing a further poling process, the as-stretched film does have a fairly, good pyroelectric performance. Moreover, the surface of the stretched film is smoother and has fewer surface defects.
-
公开(公告)号：US20180340848A1
公开(公告)日：2018-11-29
申请号：US16036612
申请日：2018-07-16
Inventor： Huiling Tai , Yujin Yao , Dongsheng Wang , Zhen Yuan , Yadong Jiang , Guangzhong Xie , Xiaosong Du
IPC: G01L1/22 , C09D133/02 , C08J7/04
Abstract: A three-layer self-healing flexible strain sensor includes: a self-healing sensitive layer, wherein a self-healing encapsulating layer is respectively placed on an upper surface and a lower surface of the self-healing sensitive layer. The self-healing sensitive layer comprises a doped carbon material or a conductive composite. The three self-healing layers of the self-healing strain sensor can quickly repair the internal and external damage caused by the layered structure in a short period of time after the external damage, and does not require external stimulation. The three-layer self-healing structure strain sensor is simple in preparation without using a repair agent, which can achieve rapid self-repair at the room temperature, and can be repeatedly repair. The three-layer self-healing structure increases the strength and modulus of the strain sensor as well as increases the ability of the strain sensor to resist external damage.
-
Patent Agency Ranking
公开(公告)号：US10550240B2
公开(公告)日：2020-02-04
申请号：US15825109
申请日：2017-11-29
Inventor： Huiling Tai , Xueliang Ye , Zhen Yuan , Rui Guo , Yadong Jiang , Weizhi Li , Xiaosong Du
IPC: B29D7/01 , C08J5/18 , B32B27/12 , C08K3/04 , C08F2/20 , C08F26/10 , C08F120/56 , B32B27/30 , B32B27/28 , C08G73/02 , G01N21/35 , G01Q60/24 , H01J37/28
Abstract: A carbon material-polymer strain sensitive film and its preparation method are disclosed. The carbon material-polymer strain sensitive film includes multiple layers of carbon sensitive films and multiple layers of polymer films, wherein the multiple layers of carbon sensitive films and the multiple layers of polymer films form a multi-layer composite film in sequence through a layer-by-layer assembly process. The preparation method includes steps of: cleaning, processing a hydrophilic treatment and processing a hydrophobic treatment on a rigid substrate in sequence; preparing a carbon material in dispersion solution and a polymer dispersion solution; through a layer-by-layer self-assembly process, growing the polymer and the carbon material in a form of layer-by-layer on the rigid substrate; transferring the composite film from the rigid substrate to a flexible substrate; and pasting two electrodes at two ends of the composite film and encapsulating with a flexible film.
-
公开(公告)号：US09921194B2
公开(公告)日：2018-03-20
申请号：US15164841
申请日：2016-05-25
Inventor： Xiaosong Du , Huan Yuan , Xulan Zhao , Penglin Wu , Yadong Jiang
CPC classification number: G01N30/6086 , G01N30/6095 , G01N2030/025 , G01N2030/6056
Abstract: A wavy micro gas chromatography column includes a silicon substrate and a bonded glass cover. A micro channel having a rectangular cross section is etched on the silicon substrate and coated with a stationary phase film. A projection figure of the micro channel on the silicon substrate includes multiple regular wavy curves. Each wavy curve is formed through alternately connecting first upper arcs with first lower arcs. Because the groove has a curving structure, the carrier gas velocity is decreased as the increase of the arc angle, resulting in an improvement of the flow uniformity at the zones between two adjacent bends but also an enlarging nonsymmetric distribution at the bends. Thus, an optimal curving structure can make the overall flow more even, and in turn achieve a better separation performance compared to the straight channel columns. Meanwhile, a wavy channel realizes a longer column length on a given area.
-
公开(公告)号：US09726651B2
公开(公告)日：2017-08-08
申请号：US14593304
申请日：2015-01-09
Inventor： Xiaosong Du , Luhua Cheng , Penglin Wu , Huan Yuan , Yadong Jiang , Ze Wu , Yi Li , Dong Qiu
CPC classification number: G01N30/93 , B01L3/5027 , B01L3/502707 , B01L2300/069 , B01L2300/0816 , B01L2300/0864 , B01L2300/0883 , G01N1/4005 , G01N1/405 , G01N30/08 , G01N2030/085
Abstract: A double-sided diaphragm micro gas-preconcentrator has a micro-gas chamber which is formed by stacking an upper silicon substrate with a lower silicon substrate with a back-on-face configuration. One or more suspended membranes are provided on every silicon substrate. The silicon where the suspended membrane is provided is completely removed for forming a cavity. A thin-film heater is deposited on every suspended membrane. A sorptive film is coated on an inner wall of every suspended membrane. Thus, the upper and lower sides of the preconcentrator in the present invention are suspended membranes, which improve the area of the sorptive film on the diaphragm. As a result, the preconcentrating factor is improved while keeping the small heat capacity, fast heating rate, and low power consumption features of the planar diaphragm preconcentrator.
-
公开(公告)号：US20160266073A1
公开(公告)日：2016-09-15
申请号：US15164841
申请日：2016-05-25
Inventor： Xiaosong Du , Huan Yuan , Xulan Zhao , Penglin Wu , Yadong Jiang
IPC: G01N30/02
CPC classification number: G01N30/6086 , G01N30/6095 , G01N2030/025 , G01N2030/6056
Abstract: A wavy micro gas chromatography column includes a silicon substrate and a bonded glass cover. A micro channel having a rectangular cross section is etched on the silicon substrate and coated with a stationary phase film. A projection figure of the micro channel on the silicon substrate includes multiple regular wavy curves. Each wavy curve is formed through alternately connecting first upper arcs with first lower arcs. Because the groove has a curving structure, the carrier gas velocity is decreased as the increase of the arc angle, resulting in an improvement of the flow uniformity at the zones between two adjacent bends but also an enlarging nonsymmetric distribution at the bends. Thus, an optimal curving structure can make the overall flow more even, and in turn achieve a better separation performance compared to the straight channel columns. Meanwhile, a wavy channel realizes a longer column length on a given area.
Abstract translation: 波浪微气相色谱柱包括硅衬底和粘合玻璃罩。 在硅衬底上蚀刻具有矩形横截面的微通道并涂覆有固定相膜。 硅衬底上的微通道的投影图包括多个规则的波浪曲线。 每个波浪曲线通过交替地将第一上部弧线与第一个较低的弧线交替地形成。 由于凹槽具有弯曲结构，所以载气速度随着弧角的增加而减小，导致两个相邻弯头之间的区域的流动均匀性得到改善，而且在弯曲处也是扩大的非对称分布。 因此，与直通柱相比，最佳弯曲结构可以使整体流动更均匀，从而达到更好的分离性能。 同时，波浪通道在给定区域实现更长的列长度。
-
公开(公告)号：US11750116B2
公开(公告)日：2023-09-05
申请号：US17153833
申请日：2021-01-20
Inventor： Yuanjie Su , Qichen Gong , Guangzhong Xie , Mingliang Yao , Chunxu Chen , Jinyang Yi , Li Jia , Weizhi Li , Huiling Tai , Xiaosong Du , Yadong Jiang
CPC classification number: H02N1/04 , F01N11/00 , H10N30/05 , F01N2560/026
Abstract: A self-powered automobile exhaust gas sensor including a supporting frame, a ferroelectric-triboelectric coupling functional film, and two metal electrodes. The ferroelectric-triboelectric coupling functional film comprises a first end fixed on the supporting beam in middle of the supporting frame, and a second end is freestanding. The two metal electrodes are grounded and adhered on the upper and lower sides of the supporting frame, respectively. An iron block is mounted on the top of the supporting frame. The ferroelectric-triboelectric coupling functional film includes a negative triboelectric charging layer, a ferroelectric composite material layer and a positive triboelectric charging layer; the ferroelectric composite material layer is prepared via casting method by mixing the ferroelectric material and the gas-sensitive material; the negative triboelectric charging layer has stronger electron affinity ability than the positive triboelectric charging layer, and attracts electrons from the positive triboelectric charging layer.
-
-
-
-
-
-
-
-
-
Search Results
15
records
(took 0.019 seconds)
