In-situ monitoring of nanoscale ion transport as feedbacks for nucleation and phase transitions at single entity resolutions

Electroosmotic flow in the transport through a conical nanopipette visualized by fluorescence imaging of a neutral dye

The changes in K+ concentration under the variation of applied electrical potential

In vitro photoluminescence lifetime and intensity imaging of gold nanoclusters (red spots inside nucleus)

Signal amplification of folding based aptamer sensors for microRNAs, SARS-CoV-2 or other RNA sequences.