Multiple Roles of PEI in Synthesis of Silver Nanoshells, published online San San Maw, Satoshi Watanabe, Minoru T. Miyahara "Multiple Roles of Polyethylenimine during Synthesis of 10 nm Thick Continuous Silver Nanoshells" Langmuir, 36, 4511-4518 (2020); DOI:10.1021/acs.langmuir.9b03096