| Autor: |
Gandhiraman RP; NASA Ames Research Center, Moffett Field, California 94035, United States., Nordlund D, Jayan V, Meyyappan M, Koehne JE |
| Jazyk: |
angličtina |
| Zdroj: |
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2014 Dec 24; Vol. 6 (24), pp. 22751-60. Date of Electronic Publication: 2014 Dec 05. |
| DOI: |
10.1021/am5069003 |
| Abstrakt: |
Controlled integration of features that enhance the analytical performance of a sensor chip is a challenging task in the development of paper sensors. A critical issue in the fabrication of low-cost biosensor chips is the activation of the device surface in a reliable and controllable manner compatible with large-scale production. Here, we report stable, well-adherent, and repeatable site-selective deposition of bioreactive amine functionalities and biorepellant polyethylene glycol-like (PEG) functionalities on paper sensors by aerosol-assisted, atmospheric-pressure, plasma-enhanced chemical vapor deposition. This approach requires only 20 s of deposition time, compared to previous reports on cellulose functionalization, which takes hours. A detailed analysis of the near-edge X-ray absorption fine structure (NEXAFS) and its sensitivity to the local electronic structure of the carbon and nitrogen functionalities. σ*, π*, and Rydberg transitions in C and N K-edges are presented. Application of the plasma-processed paper sensors in DNA detection is also demonstrated. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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