Park Chunghyun, Park Jung-Hoon, Rodriguez Christophe, Yu HyeonSeung, Kim Minkwan, Jin Kyoungsuk, Han Seungyong, Shin Jonghwa, Ko Seung Hwan, Nam Ki Tae, Lee Yong-Hee, Cho Yong-Hoon, Park YongKeun
Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea and Graduate School of Nanoscience and Technology and KI for the NanoCentury, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
Phys Rev Lett. 2014 Sep 12;113(11):113901. doi: 10.1103/PhysRevLett.113.113901. Epub 2014 Sep 9.
Light-matter interaction gives optical microscopes tremendous versatility compared with other imaging methods such as electron microscopes, scanning probe microscopes, or x-ray scattering where there are various limitations on sample preparation and where the methods are inapplicable to bioimaging with live cells. However, this comes at the expense of a limited resolution due to the diffraction limit. Here, we demonstrate a novel method utilizing elastic scattering from disordered nanoparticles to achieve subdiffraction limited imaging. The measured far-field speckle fields can be used to reconstruct the subwavelength details of the target by time reversal, which allows full-field dynamic super-resolution imaging. The fabrication of the scattering superlens is extremely simple and the method has no restrictions on the wavelength of light that is used.
与其他成像方法（如电子显微镜、扫描探针显微镜或X射线散射）相比，光与物质的相互作用赋予光学显微镜极大的通用性。在其他成像方法中，样品制备存在各种限制，并且这些方法不适用于活细胞的生物成像。然而，由于衍射极限，这是以有限的分辨率为代价的。在这里，我们展示了一种利用无序纳米粒子的弹性散射来实现亚衍射极限成像的新方法。通过时间反转，测量到的远场散斑场可用于重建目标的亚波长细节，从而实现全场动态超分辨率成像。散射超透镜的制造极其简单，并且该方法对所使用的光的波长没有限制。
