【摘要】：聲學(xué)超構(gòu)表面是當(dāng)前聲學(xué)領(lǐng)域的研究熱點(diǎn),其是一種由人工微單元構(gòu)成的超薄平面結(jié)構(gòu),由于其具備平面、超薄等獨(dú)特物理特性及對聲波的靈活調(diào)控能力,使得其在降噪隔振、隱身技術(shù)、非接觸操控物體等諸多聲學(xué)領(lǐng)域具有重要的應(yīng)用前景。文章以反射型、吸收型、透射型聲學(xué)超構(gòu)表面為框架,深入介紹超構(gòu)表面高效調(diào)控聲波的物理機(jī)制并舉例展示了其構(gòu)建復(fù)雜聲場的能力,包括任意點(diǎn)反射聚焦、低頻完美吸聲、自彎曲聲束、螺旋聲波以及聲能量非對稱傳輸。
[Abstract]:Acoustic superconstructure surface is a research hot spot in the field of acoustics. It is an ultra-thin planar structure composed of artificial micro-elements. Because of its unique physical characteristics as plane, ultra-thin surface and flexible regulation ability of sound waves, it has an important application prospect in many acoustic fields such as noise reduction and isolation, concealment technology and non-contact control objects. This paper introduces the physical mechanism of the hyperstructural surface to control the sound wave efficiently and shows its ability to construct complex sound field, including reflection focusing at any point, perfect sound absorption at any point, self-bending sound beam, spiral sound wave and asymmetric transmission of acoustic energy.
【作者單位】： 同濟(jì)大學(xué)物理科學(xué)與工程學(xué)院聲學(xué)研究所;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號(hào):11704284) 上海市浦江人才計(jì)劃(批準(zhǔn)號(hào):17PJ1409000)資助項(xiàng)目
【分類號(hào)】：O42
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本文編號(hào)：2504222