Prof. Ho's research interest is in soft ionic-electronic materials and devices, focusing on two application areas: (i) sensors (mechanical, chemical, and biological) and (ii) electrochemical energy storage devices (e.g. flexible supercapacitors and batteries). Both areas are linked through his expertise in materials synthesis, surface functionalization, interfacial optimization, and device architecture. Over the years, in the sensing area, Prof Ho's group has made notable advances in multi-length-scale architectures, such as the bean-pod-inspired architecture for wide dynamic range pressure sensing. In the energy storage area, his group pioneered the micro-redoxcapacitor (MRC), the first energy storage device combining both pseudocapacitive (capacitive) and redox (battery) mechanisms in a single electrode, advancing the speed-capacity limit.