CAJ | 학술논문

为了实现亚波长成像，我们在理论和实验上验证了倾斜型和折叠型阵列系统的声学亚波长成像调控，其亚波长像斑的分辨率小于波长的十分之一，这大大的打破了 Abbe 衍射极限。在倾斜型阵列系统中，随着倾斜角度的变化，亚波长像斑的横向位置可以发生变化；而在折叠型系统中，其像斑又可以重新调节到原来的位置，实现了亚波长成像系统中像斑位置的自由调控。并且我们将衰逝波的传播路径由单纯的垂直路径变换成垂直和水平相结合的混合路径，使得像斑在垂直方向上缩短了距离，大大减小了样品系统的厚度。该体系结构简小，形状规则，成像效果佳，更有利于在工业上规模生产与大型声学设备中的器件集成。
위료실현아파장성상，아문재이론화실험상험증료경사형화절첩형진렬계통적성학아파장성상조공，기아파장상반적분변솔소우파장적십분지일，저대대적타파료 Abbe 연사겁한。재경사형진렬계통중，수착경사각도적변화，아파장상반적횡향위치가이발생변화；이재절첩형계통중，기상반우가이중신조절도원래적위치，실현료아파장성상계통중상반위치적자유조공。병차아문장쇠서파적전파로경유단순적수직로경변환성수직화수평상결합적혼합로경，사득상반재수직방향상축단료거리，대대감소료양품계통적후도。해체계결구간소，형상규칙，성상효과가，경유리우재공업상규모생산여대형성학설비중적기건집성。
In this paper, an oblique and a buckling layered acoustic structure are experimentally and theo-retically demonstrated to manipulate acoustic subwavelength images. Imaging resolution of less than one tenth wavelength is achieved with both optimized systems and lateral image shift has been realized by ob-lique layered system. The thicknesses of both the oblique and the buckling layered acoustic systems have been largely reduced through utilizing the combination of transverse and longitudinal wave propagation path instead of single vertical path in the rectus layered planar acoustic system. With smaller size and sub-wavelength images manipulation, the acoustic systems are more favorable for practical application.