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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hoa, X. D. Jimenez, A. Beauvais, J. Charette, P. Tabrizian, M. Martin, M. Kirk, A. |
| Description | Country affiliation: Canada Author Affiliation: Hoa XD ( Department of Biomedical Engineering, McGill University, 3775 University Street, Montreal, Que., Canada.) |
| Abstract | Surfaces featuring nano-structures and biochemical patterns are increasingly developed as novel and superior substrates for biosensors and assays. Metallic periodic nano-structures have been studied for their unique optical properties and in particular their ability to support surface plasmon waves. Here we present a new nano-structuring approach based on gentle metal lift-off process coupled with self-assembled surface chemistry for the fabrication of a zeroth-order 400nm period metallic grating with differentiated surface chemistries on the mesas and troughs. The approach, using terminated self-assembled monolayers, creates versatile functionalized substrates allowing the precise deposition of complex biomolecular structures. We use this technique to perform the guided deposition of a three-dimensional polyelectrolyte multilayer structure and the patterned adsorption of quantum dots. Finally, we demonstrate that scanning near-field optical microscopy, used in conjuncture with atomic force microscopy and scanning electron microscopy, is an ideal tool for the characterization of this nano-structured surface as it provides a complete chemical, topographical and optical image of the surface. This ability to pattern and locally measure the surface properties is likely to have an important impact on the design of novel and optimized biointerfaces and transducers for biosensors. |
| ISSN | 09565663 |
| Issue Number | 4 |
| Volume Number | 24 |
| e-ISSN | 18734235 |
| Journal | Biosensors and Bioelectronics |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2008-12-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biosensing Techniques Instrumentation Nanotechnology Optical Devices Quantum Dots Refractometry Methods Equipment Design Equipment Failure Analysis Reproducibility Of Results Sensitivity And Specificity Surface Properties Journal Article Research Support, Non-u.s. Gov't Discipline Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Medicine Biophysics Biomedical Engineering Biotechnology Electrochemistry |
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