Liu Xiaohu received his PhD in biotechnology from Nanyang Technological University in 2015, with a dissertation on peptide-based nanomaterials for biosensor development. He has extensive experience developing biosensors for toxins and biomarkers such as botulinum neurotoxin A, human cardiac troponin I, and Streptolysin O using peptide substrates and functionalized gold nanoparticles, achieving detection limits in the picomolar to nanomolar range. Liu has also worked on peptide binder development, colorimetric biosensor design, and teaching assistant roles. He is skilled in peptide synthesis, surface functionalization, nanoparticle synthesis and characterization techniques.