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    • 8. 发明申请
    • MATERIAL FABRICATION USING ACOUSTIC RADIATION FORCES
    • 使用声辐射力的材料制造
    • US20160184790A1
    • 2016-06-30
    • US14955482
    • 2015-12-01
    • Los Alamos National Security, LLC
    • Naveen N. SinhaDipen N. SinhaGreg R. Goddard
    • B01J19/06B29C37/00
    • B01J19/10B01J19/06B29C37/00B29C2791/008B29K2063/00B29K2995/0094G10K11/165
    • Apparatus and methods for using acoustic radiation forces to order particles suspended in a host liquid are described. The particles may range in size from nanometers to millimeters, and may have any shape. The suspension is placed in an acoustic resonator cavity, and acoustical energy is supplied thereto using acoustic transducers. The resulting pattern may be fixed by using a solidifiable host liquid, forming thereby a solid material. Patterns may be quickly generated; typical times ranging from a few seconds to a few minutes. In a one-dimensional arrangement, parallel layers of particles are formed. With two and three dimensional transducer arrangements, more complex particle configurations are possible since different standing-wave patterns may be generated in the resonator. Fabrication of periodic structures, such as metamaterials, having periods tunable by varying the frequency of the acoustic waves, on surfaces or in bulk volume using acoustic radiation forces, provides great flexibility in the creation of new materials. Periodicities may range from millimeters to sub-micron distances, covering a large portion of the range for optical and acoustical metamaterials.
    • 描述了使用声辐射力来排序悬浮在主液体中的颗粒的装置和方法。 颗粒的尺寸范围可以从纳米到毫米,并且可以具有任何形状。 将悬浮液放置在声谐振腔中,使用声换能器向其提供声能。 所得到的图案可以通过使用可固化的主体液体固化,由此形成固体材料。 模式可能很快生成; 典型的时间范围从几秒到几分钟。 在一维布置中,形成平行的颗粒层。 利用二维和三维换能器布置,由于可能在谐振器中产生不同的驻波图案,所以更复杂的粒子配置是可能的。 通过使用声辐射力来改变声波的频率,在表面上或在体积上可调节周期的诸如超材料的周期性结构的制造在新材料的创建方面提供了很大的灵活性。 周期可以从毫米到亚微米的距离范围,覆盖光学和声学超材料的大部分范围。