Journal
BIOSENSORS & BIOELECTRONICS
Volume 152, Issue -, Pages -Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2020.112013
Keywords
Microdroplet; Tape; SERS; Sampling; Food contaminants
Categories
Funding
- National Natural Science Foundation of China [21804007, 21890742]
- Beijing Natural Science Foundation [2184109]
- Fundamental Research Funds for Central Universities [FRFTP-17-066A1]
- National Postdoctoral Innovative Talents Support Program of China [BX20180036]
- China Postdoctoral Science Foundation [2019M650479]
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Simple, effective, and rapid detection of chemically relevant hazards is a highly desirable research goal, which can provide early-warning information to improve the patient-care outcomes for public health. Here, we introduce a microdroplet-captured tape toward rapid SERS screening of food contaminants. The dominant sensing unit lies on functionalized microwell in conductive carbon tapes, which is simply prepared by physical punching, magnetron sputtering and electrochemical deposition of Au nanodendrites. The tape-based sensors not only possess highly branched Au nanodendrites in microwell for promoting SERS activity, but also enable anchoring the microdroplets via direct dip-pulling from pristine analytes solutions upon sticky incorporated on a glove. Early-warning SERS detection of food contaminants including Sudan-1, thiram, and thiabendazole from the real samples can be achieved by such simple sampling method. These tape-based sensors with a facile operation module and accessible signal read-out represent an innovative point-of-care testing (POCT) device for forensic, military, consumer protection, environmental monitoring, and food safety applications.
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