A fully biocompatible poly(ethylene glycol)-gold plasmonic crystal for optical sensing

作者：Kwon Hyunsoo; Ryu Shinyoung; Lee Soonil; Kim Sunghwan^*

来源：Optical Materials, 2015, 47: 333-337.

DOI：10.1016/j.optmat.2015.05.051

• Plasmonic sensor
• Biocompatibility
• Close-packed monolayer
• Label free sensor
• Glucose sensor
• Poly(ethylene glycol)

A significant challenge in nano and biophotonics is to demonstrate fully biocompatible nano-optics devices that can perform biofunctions in vivo. Here we present a scalable, cost-effective, and large-area nanofabrication method for creating a quasi-3D plasmonic crystal using poly(ethylene glycol) (PEG) and gold (Au), both biocompatible materials. The plasmonic crystal was prepared by depositing an Au layer on the upper hemisphere of the replicated PEG nanospheres array: Additionally we demonstrated that the fabricated plasmonic crystal can behave as a label-free glucose sensor with sensitivity and figure-of-merit values comparable to other plasmonic crystal based sensors.

• 出版日期2015-9