公开(公告)号：US08558705B2

公开(公告)日：2013-10-15

申请号：US12821993

申请日：2010-06-23

Applicant: Xun Gong ,  Linan An

Inventor： Xun Gong ,  Linan An

IPC: G08B17/00

CPC classification number: G01N22/02 ,  B33Y80/00 ,  Y10T29/49007

Abstract: A RF resonator for sensing a physical or an environmental parameter includes a substrate having a substrate surface. A polymer-derived ceramic (PDC) element is positioned on or within the substrate surface. The RF resonator has a resonant frequency that changes as a function of the physical or environmental parameter. A system for wirelessly sensing at least one physical or environmental parameter includes at least one RF resonator and a wireless RF reader located remotely from the RF resonator for transmitting a wide-band RF interrogation signal that excites the RF resonator. The wireless RF reader detects a sensing signal retransmitted by the RF resonator and includes a processor for determining the physical or environmental parameter at the location of the RF resonator from the sensing signal.

Abstract translation: 用于感测物理或环境参数的RF谐振器包括具有衬底表面的衬底。 聚合物衍生的陶瓷（PDC）元件位于基底表面上或内部。 RF谐振器具有作为物理或环境参数的函数而变化的谐振频率。 用于无线地感测至少一个物理或环境参数的系统包括至少一个RF谐振器和远离RF谐振器的无线RF读取器，用于发射激励RF谐振器的宽带RF询问信号。 无线RF读取器检测由RF谐振器重发的感测信号，并且包括用于根据感测信号确定RF谐振器的位置处的物理或环境参数的处理器。

公开(公告)号：US08119057B2

公开(公告)日：2012-02-21

申请号：US12372297

申请日：2009-02-17

Applicant: Weifeng Fei ,  Arnold Hill ,  Linan An

Inventor： Weifeng Fei ,  Arnold Hill ,  Linan An

IPC: B28B1/00 ,  B28B3/00 ,  B28B5/00 ,  C04B33/32 ,  C04B33/36 ,  C04B35/64 ,  C04B35/00 ,  C04B35/52

CPC classification number: C04B35/6269 ,  C04B35/5622 ,  C04B35/571 ,  C04B35/589 ,  C04B35/65 ,  C04B2235/404 ,  C04B2235/483 ,  C04B2235/6028 ,  C04B2235/612 ,  C04B2235/94

Abstract: A method and product made by using a polymeric ceramic precursor to synthesize dense, crack-free bulk ceramics in a technique using a sacrificial mold provides a ceramic structure for many technical, medical and industrial applications. The novel process uses an open cell material as a sacrificial mold to shape a ceramic precursor during curing. The cured ceramic green body can be machined and shaped to form the desired ceramic structure prior to final pyrolysis. The open cell material forms gas release paths to release large amount of gases generated during the pyrolysis of the cured ceramic precursor. After pyrolysis, an intact, dense, crack-free ceramic structure with high purity, strength and durability is obtained. Uses of the present invention include, but are not limited to, bulk ceramic parts, ceramic crucibles, a replacement material in some applications involving glass, silicon carbides, silicon nitrides, hafnium carbide and the like.

Abstract translation: 通过使用聚合物陶瓷前体在使用牺牲模具的技术中合成致密的无裂纹体陶瓷制成的方法和产品为许多技术，医疗和工业应用提供了陶瓷结构。 该新方法使用开孔材料作为牺牲模具，以在固化期间成型陶瓷前体。 固化的陶瓷生坯可以在最终热解之前被加工和成形以形成所需的陶瓷结构。 开孔材料形成气体释放路径以释放在固化的陶瓷前体的热解过程中产生的大量气体。 热解后，可以获得完整，致密，无裂纹的陶瓷结构，具有高纯度，强度和耐久性。 本发明的用途包括但不限于散装陶瓷部件，陶瓷坩埚，在涉及玻璃的一些应用中的替代材料，碳化硅，氮化硅，碳化铪等。

公开(公告)号：US20090209405A1

公开(公告)日：2009-08-20

申请号：US12372297

申请日：2009-02-17

Applicant: Weifeng Fei ,  Arnold Hill ,  Linan An

Inventor： Weifeng Fei ,  Arnold Hill ,  Linan An

IPC: C04B35/00 ,  B28B1/00

CPC classification number: C04B35/6269 ,  C04B35/5622 ,  C04B35/571 ,  C04B35/589 ,  C04B35/65 ,  C04B2235/404 ,  C04B2235/483 ,  C04B2235/6028 ,  C04B2235/612 ,  C04B2235/94

Abstract: A method and product made by using a polymeric ceramic precursor to synthesize dense, crack-free bulk ceramics in a technique using a sacrificial mold provides a ceramic structure for many technical, medical and industrial applications. The novel process uses an open cell material as a sacrificial mold to shape a ceramic precursor during curing. The cured ceramic green body can be machined and shaped to form the desired ceramic structure prior to final pyrolysis. The open cell material forms gas release paths to release large amount of gases generated during the pyrolysis of the cured ceramic precursor. After pyrolysis, an intact, dense, crack-free ceramic structure with high purity, strength and durability is obtained. Uses of the present invention include, but are not limited to, bulk ceramic parts, ceramic crucibles, a replacement material in some applications involving glass, silicon carbides, silicon nitrides, hafnium carbide and the like.

Abstract translation: 通过使用聚合物陶瓷前体在使用牺牲模具的技术中合成致密的无裂纹体陶瓷制成的方法和产品为许多技术，医疗和工业应用提供了陶瓷结构。 该新方法使用开孔材料作为牺牲模具，以在固化期间成型陶瓷前体。 固化的陶瓷生坯可以在最终热解之前被加工和成形以形成所需的陶瓷结构。 开孔材料形成气体释放路径以释放在固化的陶瓷前体的热解过程中产生的大量气体。 热解后，可以获得完整，致密，无裂纹的陶瓷结构，具有高纯度，强度和耐久性。 本发明的用途包括但不限于散装陶瓷部件，陶瓷坩埚，在涉及玻璃的一些应用中的替代材料，碳化硅，氮化硅，碳化铪等。

公开(公告)号：US20100321191A1

公开(公告)日：2010-12-23

申请号：US12821993

申请日：2010-06-23

Applicant: Xun Gong ,  Linan An

Inventor： Xun Gong ,  Linan An

IPC: G08B17/00 ,  G01N27/00 ,  G03F7/20

CPC classification number: G01N22/02 ,  B33Y80/00 ,  Y10T29/49007

Abstract: A RF resonator for sensing a physical or an environmental parameter includes a substrate having a substrate surface. A polymer-derived ceramic (PDC) element is positioned on or within the substrate surface. The RF resonator has a resonant frequency that changes as a function of the physical or environmental parameter. A system for wirelessly sensing at least one physical or environmental parameter includes at least one RF resonator and a wireless RF reader located remotely from the RF resonator for transmitting a wide-band RF interrogation signal that excites the RF resonator. The wireless RF reader detects a sensing signal retransmitted by the RF resonator and includes a processor for determining the physical or environmental parameter at the location of the RF resonator from the sensing signal.

Abstract translation: 用于感测物理或环境参数的RF谐振器包括具有衬底表面的衬底。 聚合物衍生的陶瓷（PDC）元件位于基底表面上或内部。 RF谐振器具有作为物理或环境参数的函数而变化的谐振频率。 用于无线地感测至少一个物理或环境参数的系统包括至少一个RF谐振器和远离RF谐振器的无线RF读取器，用于发射激励RF谐振器的宽带RF询问信号。 无线RF读取器检测由RF谐振器重发的感测信号，并且包括用于根据感测信号确定RF谐振器的位置处的物理或环境参数的处理器。

公开(公告)号：US07338202B1

公开(公告)日：2008-03-04

申请号：US10883549

申请日：2004-07-01

Applicant: Jayanta S. Kapat ,  Linan An ,  Sanjeev Bharani

Inventor： Jayanta S. Kapat ,  Linan An ,  Sanjeev Bharani

IPC: G01N25/40 ,  G01K17/06 ,  H01L21/00

CPC classification number: G01K17/06 ,  B81B2201/0292 ,  B81C1/0069 ,  G01K7/22 ,  G01N25/40

Abstract: Novel micro electro mechanical systems (MEMS)-based sensors for use in ultra-high temperature environments are disclosed. The MEMS-based sensors are derived from a class of polymer-derived ceramics selected from the group consisting of SiCN, SiBCN and SiAlCN. The materials of construction are such that, the sensors are capable of accurate, real-time, on-line and in-situ monitoring, suppression of combustion oscillations and detailed measurements in operating structures that have temperatures of from about 1500° K to about 2000° K, extreme pressures/turbulence and harsh chemical off gases. When the novel sensors are mounted on a hot gas path wall, such as, at a combustor exit, there can be a continuous monitoring of pressure pulses/oscillations, wall shear stress, temperature and surface heat flux.

Abstract translation: 公开了用于超高温环境的基于微机电系统（MEMS）的传感器。 基于MEMS的传感器衍生自一类选自SiCN，SiBCN和SiAlCN的聚合物衍生的陶瓷。 结构材料使得传感器能够精确，实时，在线和原位监测，抑制燃烧振荡和具有约1500°K至约2000°温度的操作结构中的详细测量 °K，极压/湍流和恶劣的化学废气。 当新型传感器安装在热气路径壁上时，例如在燃烧器出口处，可以连续监测压力脉冲/振荡，壁剪切应力，温度和表面热通量。