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公开(公告)号：US20160051227A1
公开(公告)日：2016-02-25
申请号：US14779172
申请日：2013-03-22
申请人： Juan TU , Bin LIANG , Jianchun CHENG , Dong ZHANG , Yong LI , Xiasheng GUO , NANJING UNIVERSITY
发明人： Juan TU , Bin LIANG , Jianchun CHENG , Dong ZHANG , Yong LI , Xiasheng GUO
CPC分类号： A61B8/4494 , A61B8/14 , A61B8/4483 , A61B8/5269 , G01N29/0654 , G10K11/18 , H03H9/02
摘要： Acoustic diodes, devices incorporating such diodes; and methods of using such devices are disclosed. An acoustic diode may include a periodic acoustic grating and a uniform plate. The periodic acoustic grating may include a plurality of .gratings. The uniform plate may foe separated from-the periodic acoustic-grating by a resonant cavity. The acoustic diode may be configured to have a first transmission, efficiency for acoustic waves incident on the periodic acoustic grating that is greater than a second transmission efficiency for acoustic waves incident on the uniform plate. The acoustic waves may have a. wavelength within a range of wavelengths. Devices incorporating the acoustic diode may include medical imaging devices, such as ultrasound devices, and noise reduction devices.
摘要翻译： 声二极管，并入这种二极管的器件; 并且公开了使用这种装置的方法。 声二极管可以包括周期性声光栅和均匀的板。 周期性声光栅可以包括多个格栅。 均匀板可以通过谐振腔与周期性声光栅分离。 声二极管可以被配置为具有第一传输，入射到周期性声光栅上的声波的效率大于入射在均匀板上的声波的第二传输效率。 声波可能有一个。 波长范围内的波长。 结合声二极管的装置可以包括诸如超声装置的医疗成像装置和降噪装置。
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公开(公告)号：US20120186904A1
公开(公告)日：2012-07-26
申请号：US13190586
申请日：2011-07-26
申请人： Jian-Chun CHENG , Bin LIANG , Juan TU , Xia-Sheng GUO , Dong ZHANG
发明人： Jian-Chun CHENG , Bin LIANG , Juan TU , Xia-Sheng GUO , Dong ZHANG
IPC分类号： G10K11/04
CPC分类号： G10K11/04
摘要： An acoustic diode includes a phononic crystal medium, a nonlinear acoustic medium, a aluminum tubes contain the phononic crystal medium and the nonlinear acoustic medium. The phononic crystal medium is fabricated by alternately laminating a water layers and a glass layers in a periodic manner.
摘要翻译： 声二极管包括声子晶体介质，非线性声学介质，含有声子晶体介质和非线性声学介质的铝管。 声子晶体介质是通过周期性地交替层叠水层和玻璃层来制造的。
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公开(公告)号：US20150298042A1
公开(公告)日：2015-10-22
申请号：US14427037
申请日：2012-09-10
CPC分类号： B01D47/06 , B01D5/0033 , B01D47/066 , B01D49/006
摘要： Systems and methods are disclosed for removing nano-particulates from a gas. The systems may include a chamber to contain the particulate-containing gas, a source of the gas, a source of water vapor, a source of a supersonic gas, and at least one ultrasonic transducer in contact with the chamber. The chamber may also include one or more receptacles to receive the particulates. The methods may include introducing the particulate-containing gas and the water vapor into the chamber. A gas may be introduced into the chamber at supersonic speeds thereby cooling the water vapor to form nucleating ice crystals. The ultrasonic transducers may then introduce ultrasonic power into the chamber thereby causing the particulates to contact the ice crystals. The nucleating crystals, with their attached particulates, may then fall under gravity to be captured in the receptacles.
摘要翻译： 公开了从气体中除去纳米颗粒的系统和方法。 该系统可以包括容纳含颗粒的气体，气体源，水蒸汽源，超音速气体源和与室接触的至少一个超声换能器的腔室。 腔室还可以包括一个或多个容纳微粒的容器。 该方法可以包括将含颗粒的气体和水蒸气引入室中。 可以以超音速将气体引入室中，从而冷却水蒸气以形成成核冰晶。 然后，超声波换能器可以将超声波功率引入腔室，从而使微粒接触冰晶。 成核晶体与其附着的微粒可能随后在重力作用下被捕获到容器中。
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公开(公告)号：US20190130892A1
公开(公告)日：2019-05-02
申请号：US16091935
申请日：2017-06-15
申请人： NANJING UNIVERSITY
发明人： Bin LIANG , Yifan ZHU , Xinye ZOU , Jing YANG , Xudong FAN , Jianchun CHENG
IPC分类号： G10K11/20
摘要： An ultra-thin Schroeder diffuser comprises a backing-plate, wherein the backing-plate is provided with 7×p rows and 7×q columns of unit cells, p and q are integers greater than or equal to 1, a side length of the unit cell is 0.48λ, a depth of the square unit cell is 0.04λ, the unit cell is provided with a square neck, a side length of the square neck is less than the side length of the unit cell, a depth of the neck is 0.01λ, λ is a wavelength of the diffuser corresponding to the design at a center frequency center f0, the neck widths w of different unit cells are different, and a distribution of the widths satisfies a certain sequence.
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