Multiphase coatings with separated functional particles, and methods of making and using the same

    公开(公告)号:US10689542B2

    公开(公告)日:2020-06-23

    申请号:US15957638

    申请日:2018-04-19

    Abstract: Some variations provide a multiphase polymer composition comprising a first polymer material and a second polymer material that are chemically distinct, wherein the first polymer material and the second polymer material are microphase-separated on a microphase-separation length scale from about 0.1 microns to about 500 microns, wherein the multiphase polymer composition comprises first solid functional particles selectively dispersed within the first polymer material, and wherein the first solid functional particles are chemically distinct from the first polymer material and the second polymer material. Some embodiments provide an anti-corrosion composition comprising first corrosion-inhibitor particles or precursors selectively dispersed within the first polymer material, wherein the multiphase polymer composition optionally further comprises second corrosion-inhibitor particles or precursors selectively dispersed within the second polymer material. These multiphase polymer compositions may be used for other applications, such as self-cleaning, self-healing, or flame-retardant coatings. Methods of making and using these multiphase polymer compositions are disclosed.

    Semi-passive control of solidification in powdered materials

    公开(公告)号:US10682699B2

    公开(公告)日:2020-06-16

    申请号:US15209903

    申请日:2016-07-14

    Abstract: Disclosed herein are surface-functionalized powders which alter the solidification of the melted powders. Some variations provide a powdered material comprising a plurality of particles fabricated from a first material, wherein each of the particles has a particle surface area that is continuously or intermittently surface-functionalized with nanoparticles and/or microparticles selected to control solidification of the powdered material from a liquid state to a solid state. Other variations provide a method of controlling solidification of a powdered material, comprising melting at least a portion of the powdered material to a liquid state, and semi-passively controlling solidification of the powdered material from the liquid state to a solid state. Several techniques for semi-passive control are described in detail. The methods may further include creating a structure through one or more techniques selected from additive manufacturing, injection molding, pressing and sintering, capacitive discharge sintering, or spark plasma sintering.

    Porous conductive scaffolds containing battery materials

    公开(公告)号:US10673074B1

    公开(公告)日:2020-06-02

    申请号:US15802536

    申请日:2017-11-03

    Abstract: The present invention provides a battery electrode comprising an active battery material enclosed in the pores of a conductive nanoporous scaffold. The pores in the scaffold constrain the dimensions for the active battery material and inhibit sintering, which results in better cycling stability, longer battery lifetime, and greater power through less agglomeration. Additionally, the scaffold forms electrically conducting pathways to the active battery nanoparticles that are dispersed. In some variations, a battery electrode of the invention includes an electrically conductive scaffold material with pores having at least one length dimension selected from about 0.5 nm to about 100 nm, and an oxide material contained within the pores, wherein the oxide material is electrochemically active.

    Dual frequency FMCW lidar and method
    119.
    发明授权

    公开(公告)号:US10670721B2

    公开(公告)日:2020-06-02

    申请号:US15609788

    申请日:2017-05-31

    Inventor: Oleg M. Efimov

    Abstract: A lidar including a laser having a first frequency-modulated laser radiation and a second frequency-modulated laser radiation, a first waveguide coupled to the laser, wherein the first frequency-modulated laser radiation and the second frequency-modulated laser radiation are transmitted by the laser into the first waveguide, a second waveguide, a filter coupled between the first waveguide and the second waveguide, wherein the filter is configured to couple and pass the first frequency-modulated laser radiation through the filter to the second waveguide, and is configured to not couple or pass the second frequency-modulated laser radiation through the filter to the second waveguide, and a photodetector coupled to the second waveguide.

    Circuit and method for biasing transistor

    公开(公告)号:US10666248B1

    公开(公告)日:2020-05-26

    申请号:US16387532

    申请日:2019-04-18

    Inventor: Albert E. Cosand

    Abstract: A circuit biases an input transistor by using a voltage on a reference transistor having open gate connection and operating at the same current density as the input transistor to null current leakage at the gate of the input transistor. The input transistor is biased based on the voltage on the zero-gate-current reference transistor. The bias condition for the input transistor to operate at a zero gate current is determined by leaving the gate terminal of the reference transistor open-circuited, thus zero gate current, forcing a desired current through the reference transistor, and measuring a drain-source voltage of the reference transistor. When the input terminal of the input transistor has an ancillary circuitry that may contribute gate leakage current, the same ancillary circuitry can be coupled to the gate of the reference transistor.

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