STETHOSCOPE
    1.
    发明申请

    公开(公告)号:US20220142602A1

    公开(公告)日:2022-05-12

    申请号:US17579616

    申请日:2022-01-20

    Abstract: Provided is a stethoscope including: a support base that has an opening portion; a piezoelectric film that is supported by the support base in a state in which a surface exposed from the opening portion is convexly curved, and that detects a vibration caused by a sound which is generated from an object to be measured; and a protective layer that is disposed on a surface of the piezoelectric film on a side which comes into contact with the object to be measured, and that has an acoustic impedance between an acoustic impedance of the object to be measured and an acoustic impedance of the piezoelectric film.

    CORE SHELL PARTICLE, METHOD OF PRODUCING CORE SHELL PARTICLE, AND FILM

    公开(公告)号:US20190264104A1

    公开(公告)日:2019-08-29

    申请号:US16409883

    申请日:2019-05-13

    Abstract: An object of the present invention is to provide a core shell particle having high luminous efficacy and a narrow emission half-width; a method of producing the same; and a film formed of the core shell particle. The core shell particle of the present invention includes: a core which contains a Group III element and a Group V element; a first shell which covers at least a part of a surface of the core; a second shell which covers at least a part of the first shell; and a coordination molecule in at least a part of an outermost surface, in which at least oxygen is detected by X-ray photoelectron spectroscopy analysis, and a molar ratio of the oxygen to the Group III element contained in the core, which is acquired by X-ray photoelectron spectroscopy analysis, is 6.1 or less.

    PIEZOELECTRIC ELEMENT AND ACTUATOR

    公开(公告)号:US20250107449A1

    公开(公告)日:2025-03-27

    申请号:US18889387

    申请日:2024-09-19

    Abstract: In a piezoelectric element and an actuator, the piezoelectric element includes a substrate; and a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode provided on the substrate in this order, in which the first piezoelectric film and the second piezoelectric film each have a perovskite-type oxide as a main component, and one of the first piezoelectric film and the second piezoelectric film is an epitaxial film and the other is a uniaxial alignment film.

    STETHOSCOPE
    5.
    发明申请

    公开(公告)号:US20230071365A1

    公开(公告)日:2023-03-09

    申请号:US18055836

    申请日:2022-11-16

    Inventor: Tsutomu SASAKI

    Abstract: A stethoscope comprising: a support base having a contact surface that comes into contact with an object to be measured, a rear surface provided on a side opposite to the contact surface, and a side surface that connects the contact surface and the rear surface to each other and has a neck portion having a diameter smaller than a diameter of each of the contact surface and the rear surface; a piezoelectric film that is supported by the support base and detects a vibration caused by a sound generated from the object to be measured; a first sound absorbing material that is provided on an outer surface of the rear surface; and a second sound absorbing material that is provided on an outer surface of the side surface on a side of the contact surface with respect to the neck portion.

    PIEZOELECTRIC ELEMENT AND ACTUATOR
    6.
    发明公开

    公开(公告)号:US20240114797A1

    公开(公告)日:2024-04-04

    申请号:US18454073

    申请日:2023-08-23

    CPC classification number: H10N30/50 H10N30/206 H10N30/802 H10N30/8554

    Abstract: A piezoelectric element includes a substrate, a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode, in which both the first piezoelectric film and the second piezoelectric film have spontaneous polarizations aligned in a film thickness direction and directions of the spontaneous polarizations are the same, and in a case where in a hysteresis curve of one piezoelectric film, a coercive voltage Vcf+, a coercive voltage Vcf−, |Vcf+−Vcf−|=ΔVcf, and the larger of an absolute value of Vcf+ and an absolute value of Vcf− is denoted by Vcf, and in a hysteresis curve of the other piezoelectric film, a coercive voltage Vcr+, a coercive voltage Vcr−, |Vcr+−Vcr−|=ΔVcr, and the larger of an absolute value of Vcr+ and an absolute value Vcr− is denoted by Vcr, ΔVcr

    PIEZOELECTRIC ELEMENT AND ACTUATOR
    7.
    发明公开

    公开(公告)号:US20240114796A1

    公开(公告)日:2024-04-04

    申请号:US18454072

    申请日:2023-08-23

    CPC classification number: H10N30/50 H10N30/206 H10N30/802 H10N30/8554

    Abstract: A piezoelectric element includes a substrate; and a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode which are provided on the substrate in this order, in which both the first piezoelectric film and the second piezoelectric film contain a perovskite-type oxide containing Pb Zr, Ti, and M, as a main component, Pb composition ratios in the perovskite-type oxides contained in the first piezoelectric film and the second piezoelectric film are different from each other, and polarization-electric field hysteresis measured for the first piezoelectric film with the first electrode grounded and the second electrode as a drive electrode, and polarization-electric field hysteresis measured for the second piezoelectric film with the second electrode grounded and the third electrode as a drive electrode are shifted in the same electric field direction with respect to origins thereof.

    PIEZOELECTRIC LAMINATE AND PIEZOELECTRIC ELEMENT

    公开(公告)号:US20230070250A1

    公开(公告)日:2023-03-09

    申请号:US17891850

    申请日:2022-08-19

    Abstract: The piezoelectric laminate and the piezoelectric element have, on a substrate in the following order, a lower electrode layer and a piezoelectric film containing a perovskite-type oxide, in which the lower electrode layer includes the metal layer containing Ni and a surface layer containing a Ni oxide or a Ni oxynitride, and in the lower electrode layer, the surface layer is arranged on the side closest to the piezoelectric film.

    SEMICONDUCTOR NANOPARTICLE, SEMICONDUCTOR NANOPARTICLE-CONTAINING DISPERSION LIQUID, AND FILM

    公开(公告)号:US20200052068A1

    公开(公告)日:2020-02-13

    申请号:US16660236

    申请日:2019-10-22

    Inventor: Tsutomu SASAKI

    Abstract: An object of the present invention is to provide a semiconductor nanoparticle exhibiting excellent air durability, a semiconductor nanoparticle-containing dispersion liquid containing the semiconductor nanoparticle, and a film containing the semiconductor nanoparticle. In the semiconductor nanoparticle of the present invention, zinc, sulfur, and indium are detected by energy dispersive X-ray analysis, and a molar ratio Zn/In of zinc to indium which is acquired by the energy dispersive X-ray analysis satisfies Expression (1a). 7≤Zn/In≤15  (1a)

    SEMICONDUCTOR NANOPARTICLE, DISPERSION LIQUID, AND FILM

    公开(公告)号:US20180366674A1

    公开(公告)日:2018-12-20

    申请号:US16115052

    申请日:2018-08-28

    Inventor: Tsutomu SASAKI

    Abstract: It is an object of the present invention to provide a semiconductor nanoparticle having an excellent durability, and a dispersion liquid and a film, each of which uses the semiconductor nanoparticle. The semiconductor nanoparticle according to the present invention includes a core containing a Group III element and a Group V element, in which the nanoparticle contains carbon, oxygen, and sulfur, as detected by X-ray photoelectron spectroscopy, has peak A located at 2800 cm−1 to 3000 cm−1, peak B located at 1000 cm−1 to 1200 cm−1, and peak C located at 2450 cm−1 to 2650 cm−1, as detected by Fourier transform infrared spectroscopy, and contains a ligand having two or more mercapto groups.

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