Xi X, Niyonshuti I, Yu N, Yao L, Fu Y, Chen J, Li Y*.Label-Free Quartz Crystal Microbalance Biosensor Based on Aptamer-Capped Gold Nanocages Loaded with Polyamidoamine for Thrombin Detection, ACS Appl. Nano Mater. 2021, 4, 10, 10047–10054. doi.org/10.1016/j.foodcont.2020.107612