S2E3

Three-dimensional nanoscopy of whole cells and tissues with in situ point spread function retrieval

Mechanics of two-dimensional halide perovskites: structure-property relationship

Abstract:

Single-molecule localization microscopy is a powerful tool for visualizing subcellular structures, interactions and protein functions in biological research. However, the resolution is degraded with increasing depth due to sample-induced aberrations. In this talk, I will introduce our proposed method that enables the construction of an in situ 3D response of single emitters directly from single-molecule blinking datasets, and therefore allows their locations to be pinpointed with precision that achieves the Cramér-Rao lower bound and uncompromised fidelity.

Abstract:

Two-dimensional (2D) metal halide perovskites (MHP) are emerging members of 2D family with great promises in optoelectronics applications. Mechanical strain is ubiquitous in these materials during device operation, which could induce stability issues and/or impact the device performance. This calls for a comprehensive understanding of the mechanical performance of 2D MHPs in the first place. In this talk, I will present a series studies by scanning probe techniques to unveil the influence of each structural components on the mechanical behaviors of MHPs along both in-plane and out-of-plane. I will conclude my talk by briefly discussing new opportunities in mechanical induced phenomena in 2D MHPs and the influence of the materials’ structures.